diff --git a/src/dom/document.zig b/src/dom/document.zig
index 846c2f32..5157e86b 100644
--- a/src/dom/document.zig
+++ b/src/dom/document.zig
@@ -7,8 +7,10 @@ const Case = jsruntime.test_utils.Case;
 const checkCases = jsruntime.test_utils.checkCases;
 
 const Node = @import("node.zig").Node;
+const NodeList = @import("nodelist.zig").NodeList;
 const NodeUnion = @import("node.zig").Union;
 
+const Walker = @import("html_collection.zig").WalkerDepthFirst;
 const collection = @import("html_collection.zig");
 
 const Element = @import("element.zig").Element;
@@ -190,6 +192,56 @@ pub const Document = struct {
         return 1;
     }
 
+    // TODO netsurf doesn't handle query selectors. We have to implement a
+    // solution by ourselves.
+    // For now we handle only * and single id selector like `#foo`.
+    pub fn _querySelector(self: *parser.Document, selectors: []const u8) !?ElementUnion {
+        if (selectors.len == 0) return null;
+
+        // catch-all, return the firstElementChild
+        if (selectors[0] == '*') return try get_firstElementChild(self);
+
+        // support only simple id selector.
+        if (selectors[0] != '#' or std.mem.indexOf(u8, selectors, " ") != null) return null;
+
+        return try _getElementById(self, selectors[1..]);
+    }
+
+    // TODO netsurf doesn't handle query selectors. We have to implement a
+    // solution by ourselves.
+    // We handle only * and single id selector like `#foo`.
+    pub fn _querySelectorAll(self: *parser.Document, alloc: std.mem.Allocator, selectors: []const u8) !NodeList {
+        var list = try NodeList.init();
+        errdefer list.deinit(alloc);
+
+        if (selectors.len == 0) return list;
+
+        // catch-all, return all elements
+        if (selectors[0] == '*') {
+            // walk over the node tree fo find the node by id.
+            const root = parser.elementToNode(try parser.documentGetDocumentElement(self) orelse return list);
+            const walker = Walker{};
+            var next: ?*parser.Node = null;
+            while (true) {
+                next = try walker.get_next(root, next) orelse return list;
+                // ignore non-element nodes.
+                if (try parser.nodeType(next.?) != .element) {
+                    continue;
+                }
+                try list.append(alloc, next.?);
+            }
+        }
+
+        // support only simple id selector.
+        if (selectors[0] != '#' or std.mem.indexOf(u8, selectors, " ") != null) return list;
+
+        // walk over the node tree fo find the node by id.
+        const e = try parser.documentGetElementById(self, selectors[1..]) orelse return list;
+        try list.append(alloc, parser.elementToNode(e));
+
+        return list;
+    }
+
     pub fn deinit(_: *parser.Document, _: std.mem.Allocator) void {}
 };
 
@@ -325,13 +377,6 @@ pub fn testExecFn(
     };
     try checkCases(js_env, &importNode);
 
-    var adoptNode = [_]Case{
-        .{ .src = "let nadop = document.getElementById('content')", .ex = "undefined" },
-        .{ .src = "var v = document.adoptNode(nadop)", .ex = "undefined" },
-        .{ .src = "v.nodeName", .ex = "DIV" },
-    };
-    try checkCases(js_env, &adoptNode);
-
     var createAttr = [_]Case{
         .{ .src = "var v = document.createAttribute('foo')", .ex = "undefined" },
         .{ .src = "v.nodeName", .ex = "foo" },
@@ -354,6 +399,23 @@ pub fn testExecFn(
     };
     try checkCases(js_env, &parentNode);
 
+    var querySelector = [_]Case{
+        .{ .src = "document.querySelector('')", .ex = "null" },
+        .{ .src = "document.querySelector('*').nodeName", .ex = "HTML" },
+        .{ .src = "document.querySelector('#content').id", .ex = "content" },
+        .{ .src = "document.querySelector('#para').id", .ex = "para" },
+    };
+    try checkCases(js_env, &querySelector);
+
+    // this test breaks the doc structure, keep it at the end of the test
+    // suite.
+    var adoptNode = [_]Case{
+        .{ .src = "let nadop = document.getElementById('content')", .ex = "undefined" },
+        .{ .src = "var v = document.adoptNode(nadop)", .ex = "undefined" },
+        .{ .src = "v.nodeName", .ex = "DIV" },
+    };
+    try checkCases(js_env, &adoptNode);
+
     const tags = comptime parser.Tag.all();
     comptime var createElements: [(tags.len) * 2]Case = undefined;
     inline for (tags, 0..) |tag, i| {
diff --git a/src/dom/dom.zig b/src/dom/dom.zig
index 9c5c269f..25fdbb17 100644
--- a/src/dom/dom.zig
+++ b/src/dom/dom.zig
@@ -5,6 +5,7 @@ const EventTarget = @import("event_target.zig").EventTarget;
 const DOMImplementation = @import("implementation.zig").DOMImplementation;
 const NamedNodeMap = @import("namednodemap.zig").NamedNodeMap;
 const DOMTokenList = @import("token_list.zig").DOMTokenList;
+const NodeList = @import("nodelist.zig").NodeList;
 const Nod = @import("node.zig");
 
 pub const Interfaces = generate.Tuple(.{
@@ -13,6 +14,7 @@ pub const Interfaces = generate.Tuple(.{
     DOMImplementation,
     NamedNodeMap,
     DOMTokenList,
+    NodeList,
     Nod.Node,
     Nod.Interfaces,
 });
diff --git a/src/dom/element.zig b/src/dom/element.zig
index 8ab9d3c7..5827604a 100644
--- a/src/dom/element.zig
+++ b/src/dom/element.zig
@@ -9,6 +9,8 @@ const checkCases = jsruntime.test_utils.checkCases;
 const collection = @import("html_collection.zig");
 
 const Node = @import("node.zig").Node;
+const Walker = @import("html_collection.zig").WalkerDepthFirst;
+const NodeList = @import("nodelist.zig").NodeList;
 const HTMLElem = @import("../html/elements.zig");
 pub const Union = @import("../html/elements.zig").Union;
 
@@ -191,6 +193,74 @@ pub const Element = struct {
         return try HTMLElem.toInterface(HTMLElem.Union, res.?);
     }
 
+    fn getElementById(self: *parser.Element, id: []const u8) !?*parser.Node {
+        // walk over the node tree fo find the node by id.
+        const root = parser.elementToNode(self);
+        const walker = Walker{};
+        var next: ?*parser.Node = null;
+        while (true) {
+            next = try walker.get_next(root, next) orelse return null;
+            // ignore non-element nodes.
+            if (try parser.nodeType(next.?) != .element) {
+                continue;
+            }
+            const e = parser.nodeToElement(next.?);
+            if (std.mem.eql(u8, id, try get_id(e))) return next;
+        }
+    }
+
+    // TODO netsurf doesn't handle query selectors. We have to implement a
+    // solution by ourselves.
+    // We handle only * and single id selector like `#foo`.
+    pub fn _querySelector(self: *parser.Element, selectors: []const u8) !?Union {
+        if (selectors.len == 0) return null;
+
+        // catch-all, return the firstElementChild
+        if (selectors[0] == '*') return try get_firstElementChild(self);
+
+        // support only simple id selector.
+        if (selectors[0] != '#' or std.mem.indexOf(u8, selectors, " ") != null) return null;
+
+        // walk over the node tree fo find the node by id.
+        const n = try getElementById(self, selectors[1..]) orelse return null;
+        return try toInterface(parser.nodeToElement(n));
+    }
+
+    // TODO netsurf doesn't handle query selectors. We have to implement a
+    // solution by ourselves.
+    // We handle only * and single id selector like `#foo`.
+    pub fn _querySelectorAll(self: *parser.Element, alloc: std.mem.Allocator, selectors: []const u8) !NodeList {
+        var list = try NodeList.init();
+        errdefer list.deinit(alloc);
+
+        if (selectors.len == 0) return list;
+
+        // catch-all, return all elements
+        if (selectors[0] == '*') {
+            // walk over the node tree fo find the node by id.
+            const root = parser.elementToNode(self);
+            const walker = Walker{};
+            var next: ?*parser.Node = null;
+            while (true) {
+                next = try walker.get_next(root, next) orelse return list;
+                // ignore non-element nodes.
+                if (try parser.nodeType(next.?) != .element) {
+                    continue;
+                }
+                try list.append(alloc, next.?);
+            }
+        }
+
+        // support only simple id selector.
+        if (selectors[0] != '#' or std.mem.indexOf(u8, selectors, " ") != null) return list;
+
+        // walk over the node tree fo find the node by id.
+        const n = try getElementById(self, selectors[1..]) orelse return list;
+        try list.append(alloc, n);
+
+        return list;
+    }
+
     pub fn deinit(_: *parser.Element, _: std.mem.Allocator) void {}
 };
 
@@ -278,4 +348,22 @@ pub fn testExecFn(
         .{ .src = "d.nextElementSibling", .ex = "null" },
     };
     try checkCases(js_env, &elementSibling);
+
+    var querySelector = [_]Case{
+        .{ .src = "let e = document.getElementById('content')", .ex = "undefined" },
+        .{ .src = "e.querySelector('foo')", .ex = "null" },
+        .{ .src = "e.querySelector('#foo')", .ex = "null" },
+        .{ .src = "e.querySelector('#link').id", .ex = "link" },
+        .{ .src = "e.querySelector('#para').id", .ex = "para" },
+        .{ .src = "e.querySelector('*').id", .ex = "link" },
+
+        .{ .src = "e.querySelectorAll('foo').length", .ex = "0" },
+        .{ .src = "e.querySelectorAll('#foo').length", .ex = "0" },
+        .{ .src = "e.querySelectorAll('#link').length", .ex = "1" },
+        .{ .src = "e.querySelectorAll('#link').item(0).id", .ex = "link" },
+        .{ .src = "e.querySelectorAll('#para').length", .ex = "1" },
+        .{ .src = "e.querySelectorAll('#para').item(0).id", .ex = "para" },
+        .{ .src = "e.querySelectorAll('*').length", .ex = "4" },
+    };
+    try checkCases(js_env, &querySelector);
 }
diff --git a/src/dom/node.zig b/src/dom/node.zig
index 86b3dae5..5bbc8849 100644
--- a/src/dom/node.zig
+++ b/src/dom/node.zig
@@ -14,6 +14,7 @@ const EventTarget = @import("event_target.zig").EventTarget;
 const Attr = @import("attribute.zig").Attr;
 const CData = @import("character_data.zig");
 const Element = @import("element.zig").Element;
+const NodeList = @import("nodelist.zig").NodeList;
 const Document = @import("document.zig").Document;
 const DocumentType = @import("document_type.zig").DocumentType;
 const DocumentFragment = @import("document_fragment.zig").DocumentFragment;
@@ -193,6 +194,17 @@ pub const Node = struct {
         return try parser.nodeHasChildNodes(self);
     }
 
+    pub fn get_childNodes(self: *parser.Node, alloc: std.mem.Allocator) !NodeList {
+        var list = try NodeList.init();
+        errdefer list.deinit(alloc);
+
+        var n = try parser.nodeFirstChild(self) orelse return list;
+        while (true) {
+            try list.append(alloc, n);
+            n = try parser.nodeNextSibling(n) orelse return list;
+        }
+    }
+
     pub fn _insertBefore(self: *parser.Node, new_node: *parser.Node, ref_node: *parser.Node) !*parser.Node {
         return try parser.nodeInsertBefore(self, new_node, ref_node);
     }
@@ -242,6 +254,8 @@ pub const Node = struct {
         const res = try parser.nodeReplaceChild(self, new_child, old_child);
         return try Node.toInterface(res);
     }
+
+    pub fn deinit(_: *parser.Node, _: std.mem.Allocator) void {}
 };
 
 // Tests
@@ -393,6 +407,12 @@ pub fn testExecFn(
     };
     try checkCases(js_env, &node_has_child_nodes);
 
+    var node_child_nodes = [_]Case{
+        .{ .src = "link.childNodes.length", .ex = "1" },
+        .{ .src = "text.childNodes.length", .ex = "0" },
+    };
+    try checkCases(js_env, &node_child_nodes);
+
     var node_insert_before = [_]Case{
         .{ .src = "let insertBefore = document.createElement('a')", .ex = "undefined" },
         .{ .src = "link.insertBefore(insertBefore, text) !== undefined", .ex = "true" },
diff --git a/src/dom/nodelist.zig b/src/dom/nodelist.zig
new file mode 100644
index 00000000..fd3419df
--- /dev/null
+++ b/src/dom/nodelist.zig
@@ -0,0 +1,71 @@
+const std = @import("std");
+
+const parser = @import("../netsurf.zig");
+
+const jsruntime = @import("jsruntime");
+const Case = jsruntime.test_utils.Case;
+const checkCases = jsruntime.test_utils.checkCases;
+
+const NodeUnion = @import("node.zig").Union;
+const Node = @import("node.zig").Node;
+
+const DOMException = @import("exceptions.zig").DOMException;
+
+// Nodelist is implemented in pure Zig b/c libdom's NodeList doesn't allow to
+// append nodes.
+// WEB IDL https://dom.spec.whatwg.org/#nodelist
+pub const NodeList = struct {
+    pub const mem_guarantied = true;
+    pub const Exception = DOMException;
+
+    const NodesArrayList = std.ArrayListUnmanaged(*parser.Node);
+
+    nodes: NodesArrayList,
+
+    pub fn init() !NodeList {
+        return NodeList{
+            .nodes = NodesArrayList{},
+        };
+    }
+
+    pub fn deinit(self: *NodeList, alloc: std.mem.Allocator) void {
+        // TODO unref all nodes
+        self.nodes.deinit(alloc);
+    }
+
+    pub fn append(self: *NodeList, alloc: std.mem.Allocator, node: *parser.Node) !void {
+        try self.nodes.append(alloc, node);
+    }
+
+    pub fn get_length(self: *NodeList) u32 {
+        return @intCast(self.nodes.items.len);
+    }
+
+    pub fn _item(self: *NodeList, index: u32) !?NodeUnion {
+        if (index >= self.nodes.items.len) {
+            return null;
+        }
+
+        const n = self.nodes.items[index];
+        return try Node.toInterface(n);
+    }
+
+    // TODO _symbol_iterator
+
+    // TODO implement postAttach
+};
+
+// Tests
+// -----
+
+pub fn testExecFn(
+    _: std.mem.Allocator,
+    js_env: *jsruntime.Env,
+    comptime _: []jsruntime.API,
+) !void {
+    var childnodes = [_]Case{
+        .{ .src = "let list = document.getElementById('content').childNodes", .ex = "undefined" },
+        .{ .src = "list.length", .ex = "9" },
+    };
+    try checkCases(js_env, &childnodes);
+}
diff --git a/src/run_tests.zig b/src/run_tests.zig
index 681e96c0..0f541c79 100644
--- a/src/run_tests.zig
+++ b/src/run_tests.zig
@@ -17,6 +17,7 @@ const DOMExceptionTestExecFn = @import("dom/exceptions.zig").testExecFn;
 const DOMImplementationExecFn = @import("dom/implementation.zig").testExecFn;
 const NamedNodeMapExecFn = @import("dom/namednodemap.zig").testExecFn;
 const DOMTokenListExecFn = @import("dom/token_list.zig").testExecFn;
+const NodeListTestExecFn = @import("dom/nodelist.zig").testExecFn;
 
 var doc: *parser.DocumentHTML = undefined;
 
@@ -65,6 +66,7 @@ fn testsAllExecFn(
         DOMImplementationExecFn,
         NamedNodeMapExecFn,
         DOMTokenListExecFn,
+        NodeListTestExecFn,
     };
 
     inline for (testFns) |testFn| {
diff --git a/tests/wpt/dom/nodes/Element-closest.html b/tests/wpt/dom/nodes/Element-closest.html
new file mode 100644
index 00000000..386e3bd2
--- /dev/null
+++ b/tests/wpt/dom/nodes/Element-closest.html
@@ -0,0 +1,73 @@
+<!DOCTYPE HTML>
+<meta charset=utf8>
+<title>Test for Element.closest</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body id="body">
+  <div id="test8" class="div3" style="display:none">
+    <div id="test7" class="div2">
+      <div id="test6" class="div1">
+        <form id="test10" class="form2"></form>
+        <form id="test5" class="form1" name="form-a">
+          <input id="test1" class="input1" required>
+          <fieldset class="fieldset2" id="test2">
+            <select id="test3" class="select1" required>
+              <option default id="test4" value="">Test4</option>
+              <option selected id="test11">Test11</option>
+              <option id="test12">Test12</option>
+              <option id="test13">Test13</option>
+            </select>
+            <input id="test9" type="text" required>
+          </fieldset>
+        </form>
+      </div>
+    </div>
+  </div>
+  <div id=log></div>
+<script>
+  do_test("select"                     , "test12", "test3");
+  do_test("fieldset"                   , "test13", "test2");
+  do_test("div"                        , "test13", "test6");
+  do_test("body"                       , "test3" , "body");
+
+  do_test("[default]"                  , "test4" , "test4");
+  do_test("[selected]"                 , "test4" , "");
+  do_test("[selected]"                 , "test11", "test11");
+  do_test('[name="form-a"]'            , "test12", "test5");
+  do_test('form[name="form-a"]'        , "test13", "test5");
+  do_test("input[required]"            , "test9" , "test9");
+  do_test("select[required]"           , "test9" , "");
+
+  do_test("div:not(.div1)"             , "test13", "test7");
+  do_test("div.div3"                   , "test6" , "test8");
+  do_test("div#test7"                  , "test1" , "test7");
+
+  do_test(".div3 > .div2"              , "test12", "test7");
+  do_test(".div3 > .div1"              , "test12", "");
+  do_test("form > input[required]"     , "test9" , "");
+  do_test("fieldset > select[required]", "test12", "test3");
+
+  do_test("input + fieldset"           , "test6" , "");
+  do_test("form + form"                , "test3" , "test5");
+  do_test("form + form"                , "test5" , "test5");
+
+  do_test(":empty"                     , "test10", "test10");
+  do_test(":last-child"                , "test11", "test2");
+  do_test(":first-child"               , "test12", "test3");
+  do_test(":invalid"                   , "test11", "test2");
+
+  do_test(":scope"                     , "test4",  "test4");
+  do_test("select > :scope"            , "test4",  "test4");
+  do_test("div > :scope"               , "test4",  "");
+  do_test(":has(> :scope)"             , "test4",  "test3");
+function do_test(aSelector, aElementId, aTargetId) {
+  test(function() {
+    var el = document.getElementById(aElementId).closest(aSelector);
+    if (el === null) {
+      assert_equals("", aTargetId, aSelector);
+    } else {
+      assert_equals(el.id, aTargetId, aSelector);
+    }
+  }, "Element.closest with context node '" + aElementId + "' and selector '" + aSelector + "'");
+}
+</script>
diff --git a/tests/wpt/dom/nodes/Element-insertAdjacentElement.html b/tests/wpt/dom/nodes/Element-insertAdjacentElement.html
new file mode 100644
index 00000000..9eafee6a
--- /dev/null
+++ b/tests/wpt/dom/nodes/Element-insertAdjacentElement.html
@@ -0,0 +1,91 @@
+<!doctype html>
+<meta charset=utf-8>
+<title></title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+
+<div id="target"></div>
+<div id="parent"><span id=target2></span></div>
+<div id="log" style="visibility:visible"></div>
+<span id="test1"></span>
+<span id="test2"></span>
+<span id="test3"></span>
+<span id="test4"></span>
+<script>
+var target = document.getElementById("target");
+var target2 = document.getElementById("target2");
+
+test(function() {
+  assert_throws_dom("SyntaxError", function() {
+    target.insertAdjacentElement("test", document.getElementById("test1"))
+  });
+
+  assert_throws_dom("SyntaxError", function() {
+    target2.insertAdjacentElement("test", document.getElementById("test1"))
+  });
+}, "Inserting to an invalid location should cause a Syntax Error exception")
+
+test(function() {
+  var el = target.insertAdjacentElement("beforebegin", document.getElementById("test1"));
+  assert_equals(target.previousSibling.id, "test1");
+  assert_equals(el.id, "test1");
+
+  el = target2.insertAdjacentElement("beforebegin", document.getElementById("test1"));
+  assert_equals(target2.previousSibling.id, "test1");
+  assert_equals(el.id, "test1");
+}, "Inserted element should be target element's previous sibling for 'beforebegin' case")
+
+test(function() {
+  var el = target.insertAdjacentElement("afterbegin", document.getElementById("test2"));
+  assert_equals(target.firstChild.id, "test2");
+  assert_equals(el.id, "test2");
+
+  el = target2.insertAdjacentElement("afterbegin", document.getElementById("test2"));
+  assert_equals(target2.firstChild.id, "test2");
+  assert_equals(el.id, "test2");
+}, "Inserted element should be target element's first child for 'afterbegin' case")
+
+test(function() {
+  var el = target.insertAdjacentElement("beforeend", document.getElementById("test3"));
+  assert_equals(target.lastChild.id, "test3");
+  assert_equals(el.id, "test3");
+
+  el = target2.insertAdjacentElement("beforeend", document.getElementById("test3"));
+  assert_equals(target2.lastChild.id, "test3");
+  assert_equals(el.id, "test3");
+}, "Inserted element should be target element's last child for 'beforeend' case")
+
+test(function() {
+  var el = target.insertAdjacentElement("afterend", document.getElementById("test4"));
+  assert_equals(target.nextSibling.id, "test4");
+  assert_equals(el.id, "test4");
+
+  el = target2.insertAdjacentElement("afterend", document.getElementById("test4"));
+  assert_equals(target2.nextSibling.id, "test4");
+  assert_equals(el.id, "test4");
+}, "Inserted element should be target element's next sibling for 'afterend' case")
+
+test(function() {
+  var docElement = document.documentElement;
+  docElement.style.visibility="hidden";
+
+  assert_throws_dom("HierarchyRequestError", function() {
+    var el = docElement.insertAdjacentElement("beforebegin", document.getElementById("test1"));
+    assert_equals(el, null);
+  });
+
+  var el = docElement.insertAdjacentElement("afterbegin", document.getElementById("test2"));
+  assert_equals(docElement.firstChild.id, "test2");
+  assert_equals(el.id, "test2");
+
+  el = docElement.insertAdjacentElement("beforeend", document.getElementById("test3"));
+  assert_equals(docElement.lastChild.id, "test3");
+  assert_equals(el.id, "test3");
+
+  assert_throws_dom("HierarchyRequestError", function() {
+    var el = docElement.insertAdjacentElement("afterend", document.getElementById("test4"));
+    assert_equals(el, null);
+  });
+}, "Adding more than one child to document should cause a HierarchyRequestError exception")
+
+</script>
diff --git a/tests/wpt/dom/nodes/Element-insertAdjacentText.html b/tests/wpt/dom/nodes/Element-insertAdjacentText.html
new file mode 100644
index 00000000..be744fd4
--- /dev/null
+++ b/tests/wpt/dom/nodes/Element-insertAdjacentText.html
@@ -0,0 +1,76 @@
+<!doctype html>
+<meta charset=utf-8>
+<title></title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<body style="visibility:hidden">
+<div id="target"></div>
+<div id="parent"><span id=target2></span></div>
+<div id="log" style="visibility:visible"></div>
+</body>
+<script>
+var target = document.getElementById("target");
+var target2 = document.getElementById("target2");
+
+test(function() {
+  assert_throws_dom("SyntaxError", function() {
+    target.insertAdjacentText("test", "text")
+  });
+
+  assert_throws_dom("SyntaxError", function() {
+    target2.insertAdjacentText("test", "test")
+  });
+}, "Inserting to an invalid location should cause a Syntax Error exception")
+
+test(function() {
+  target.insertAdjacentText("beforebegin", "test1");
+  assert_equals(target.previousSibling.nodeValue, "test1");
+
+  target2.insertAdjacentText("beforebegin", "test1");
+  assert_equals(target2.previousSibling.nodeValue, "test1");
+}, "Inserted text node should be target element's previous sibling for 'beforebegin' case")
+
+test(function() {
+  target.insertAdjacentText("afterbegin", "test2");
+  assert_equals(target.firstChild.nodeValue, "test2");
+
+  target2.insertAdjacentText("afterbegin", "test2");
+  assert_equals(target2.firstChild.nodeValue, "test2");
+}, "Inserted text node should be target element's first child for 'afterbegin' case")
+
+test(function() {
+  target.insertAdjacentText("beforeend", "test3");
+  assert_equals(target.lastChild.nodeValue, "test3");
+
+  target2.insertAdjacentText("beforeend", "test3");
+  assert_equals(target2.lastChild.nodeValue, "test3");
+}, "Inserted text node should be target element's last child for 'beforeend' case")
+
+test(function() {
+  target.insertAdjacentText("afterend", "test4");
+  assert_equals(target.nextSibling.nodeValue, "test4");
+
+  target2.insertAdjacentText("afterend", "test4");
+  assert_equals(target.nextSibling.nodeValue, "test4");
+}, "Inserted text node should be target element's next sibling for 'afterend' case")
+
+test(function() {
+  var docElement = document.documentElement;
+  docElement.style.visibility="hidden";
+
+  assert_throws_dom("HierarchyRequestError", function() {
+    docElement.insertAdjacentText("beforebegin", "text1")
+  });
+
+  docElement.insertAdjacentText("afterbegin", "test2");
+  assert_equals(docElement.firstChild.nodeValue, "test2");
+
+  docElement.insertAdjacentText("beforeend", "test3");
+  assert_equals(docElement.lastChild.nodeValue, "test3");
+
+  assert_throws_dom("HierarchyRequestError", function() {
+    docElement.insertAdjacentText("afterend", "test4")
+  });
+}, "Adding more than one child to document should cause a HierarchyRequestError exception")
+
+</script>
diff --git a/tests/wpt/dom/nodes/Element-matches-init.js b/tests/wpt/dom/nodes/Element-matches-init.js
new file mode 100644
index 00000000..254af615
--- /dev/null
+++ b/tests/wpt/dom/nodes/Element-matches-init.js
@@ -0,0 +1,65 @@
+function init(e, method) {
+  /*
+   * This test suite tests Selectors API methods in 4 different contexts:
+   * 1. Document node
+   * 2. In-document Element node
+   * 3. Detached Element node (an element with no parent, not in the document)
+   * 4. Document Fragment node
+   *
+   * For each context, the following tests are run:
+   *
+   * The interface check tests ensure that each type of node exposes the Selectors API methods.
+   *
+   * The matches() tests are run
+   * All the selectors tested for both the valid and invalid selector tests are found in selectors.js.
+   * See comments in that file for documentation of the format used.
+   *
+   * The level2-lib.js file contains all the common test functions for running each of the aforementioned tests
+   */
+
+  var docType  = "html"; // Only run tests suitable for HTML
+
+  // Prepare the nodes for testing
+  var doc = e.target.contentDocument;                 // Document Node tests
+
+  var element = doc.getElementById("root");   // In-document Element Node tests
+
+  //Setup the namespace tests
+  setupSpecialElements(doc, element);
+
+  var outOfScope = element.cloneNode(true);   // Append this to the body before running the in-document
+                                               // Element tests, but after running the Document tests. This
+                                               // tests that no elements that are not descendants of element
+                                               // are selected.
+
+  traverse(outOfScope, function(elem) {        // Annotate each element as being a clone; used for verifying
+    elem.setAttribute("data-clone", "");     // that none of these elements ever match.
+  });
+
+
+  var detached = element.cloneNode(true);     // Detached Element Node tests
+
+  var fragment = doc.createDocumentFragment(); // Fragment Node tests
+  fragment.appendChild(element.cloneNode(true));
+
+  // Setup Tests
+  interfaceCheckMatches(method, "Document", doc);
+  interfaceCheckMatches(method, "Detached Element", detached);
+  interfaceCheckMatches(method, "Fragment", fragment);
+  interfaceCheckMatches(method, "In-document Element", element);
+
+  runSpecialMatchesTests(method, "DIV Element", element);
+  runSpecialMatchesTests(method, "NULL Element", document.createElement("null"));
+  runSpecialMatchesTests(method, "UNDEFINED Element", document.createElement("undefined"));
+
+  runInvalidSelectorTestMatches(method, "Document", doc, invalidSelectors);
+  runInvalidSelectorTestMatches(method, "Detached Element", detached, invalidSelectors);
+  runInvalidSelectorTestMatches(method, "Fragment", fragment, invalidSelectors);
+  runInvalidSelectorTestMatches(method, "In-document Element", element, invalidSelectors);
+
+  runMatchesTest(method, "In-document", doc, validSelectors, "html");
+  runMatchesTest(method, "Detached", detached, validSelectors, "html");
+  runMatchesTest(method, "Fragment", fragment, validSelectors, "html");
+
+  runMatchesTest(method, "In-document", doc, scopedSelectors, "html");
+}
diff --git a/tests/wpt/dom/nodes/Element-matches-namespaced-elements.html b/tests/wpt/dom/nodes/Element-matches-namespaced-elements.html
new file mode 100644
index 00000000..e61b11ca
--- /dev/null
+++ b/tests/wpt/dom/nodes/Element-matches-namespaced-elements.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>matches/webkitMatchesSelector must work when an element has a namespace</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<!-- Regression tests for https://github.com/jsdom/jsdom/issues/1846, https://github.com/jsdom/jsdom/issues/2247 -->
+
+<script>
+"use strict";
+
+for (const method of ["matches", "webkitMatchesSelector"]) {
+  test(() => {
+    assert_true(document.createElementNS("", "element")[method]("element"));
+  }, `empty string namespace, ${method}`);
+
+  test(() => {
+    assert_true(document.createElementNS("urn:ns", "h")[method]("h"));
+  }, `has a namespace, ${method}`);
+
+  test(() => {
+    assert_true(document.createElementNS("urn:ns", "h")[method]("*|h"));
+  }, `has a namespace, *|, ${method}`);
+}
+</script>
diff --git a/tests/wpt/dom/nodes/Element-matches.html b/tests/wpt/dom/nodes/Element-matches.html
new file mode 100644
index 00000000..de234b66
--- /dev/null
+++ b/tests/wpt/dom/nodes/Element-matches.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<title>Selectors-API Level 2 Test Suite: HTML with Selectors Level 3</title>
+<!-- Selectors API Test Suite Version 3 -->
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/dom/nodes/selectors.js"></script>
+<script src="/dom/nodes/ParentNode-querySelector-All.js"></script>
+<script src="Element-matches.js"></script>
+<script src="Element-matches-init.js"></script>
+<style>iframe { visibility: hidden; position: absolute; }</style>
+
+<div id="log">This test requires JavaScript.</div>
+
+<script>
+  async_test(function() {
+    var frame = document.createElement("iframe");
+    frame.onload = this.step_func_done(e => init(e, "matches" ));
+    frame.src = "/dom/nodes/ParentNode-querySelector-All-content.html#target";
+    document.body.appendChild(frame);
+  });
+</script>
diff --git a/tests/wpt/dom/nodes/Element-matches.js b/tests/wpt/dom/nodes/Element-matches.js
new file mode 100644
index 00000000..a1455c67
--- /dev/null
+++ b/tests/wpt/dom/nodes/Element-matches.js
@@ -0,0 +1,135 @@
+/*
+ * Check that the matches() method exists on the given Node
+ */
+function interfaceCheckMatches(method, type, obj) {
+  if (obj.nodeType === obj.ELEMENT_NODE) {
+    test(function() {
+      assert_idl_attribute(obj, method, type + " supports " + method);
+    }, type + " supports " + method)
+  } else {
+    test(function() {
+      assert_false(method in obj, type + " supports " + method);
+    }, type + " should not support " + method)
+  }
+}
+
+function runSpecialMatchesTests(method, type, element) {
+  test(function() { // 1
+    if (element.tagName.toLowerCase() === "null") {
+      assert_true(element[method](null), "An element with the tag name '" + element.tagName.toLowerCase() + "' should match.");
+    } else {
+      assert_false(element[method](null), "An element with the tag name '" + element.tagName.toLowerCase() + "' should not match.");
+    }
+  }, type + "." + method + "(null)")
+
+  test(function() { // 2
+    if (element.tagName.toLowerCase() === "undefined") {
+      assert_true(element[method](undefined), "An element with the tag name '" + element.tagName.toLowerCase() + "' should match.");
+    } else {
+      assert_false(element[method](undefined), "An element with the tag name '" + element.tagName.toLowerCase() + "' should not match.");
+    }
+  }, type + "." + method + "(undefined)")
+
+  test(function() { // 3
+    assert_throws_js(element.ownerDocument.defaultView.TypeError, function() {
+      element[method]();
+    }, "This should throw a TypeError.")
+  }, type + "." + method + " no parameter")
+}
+
+/*
+ * Execute queries with the specified invalid selectors for matches()
+ * Only run these tests when errors are expected. Don't run for valid selector tests.
+ */
+function runInvalidSelectorTestMatches(method, type, root, selectors) {
+  if (root.nodeType === root.ELEMENT_NODE) {
+    for (var i = 0; i < selectors.length; i++) {
+      var s = selectors[i];
+      var n = s["name"];
+      var q = s["selector"];
+
+      test(function() {
+        assert_throws_dom(
+          "SyntaxError",
+          root.ownerDocument.defaultView.DOMException,
+          function() {
+            root[method](q)
+          }
+        );
+      }, type + "." + method + ": " + n + ": " + q);
+    }
+  }
+}
+
+function runMatchesTest(method, type, root, selectors, docType) {
+  var nodeType = getNodeType(root);
+
+  for (var i = 0; i < selectors.length; i++) {
+    var s = selectors[i];
+    var n = s["name"];
+    var q = s["selector"];
+    var e = s["expect"];
+    var u = s["unexpected"];
+
+    var ctx = s["ctx"];
+    var ref = s["ref"];
+
+    if ((!s["exclude"] || (s["exclude"].indexOf(nodeType) === -1 && s["exclude"].indexOf(docType) === -1))
+     && (s["testType"] & TEST_MATCH) ) {
+
+      if (ctx && !ref) {
+        test(function() {
+          var j, element, refNode;
+          for (j = 0; j < e.length; j++) {
+            element = root.querySelector("#" + e[j]);
+            refNode = root.querySelector(ctx);
+            assert_true(element[method](q, refNode), "The element #" + e[j] + " should match the selector.")
+          }
+
+          if (u) {
+            for (j = 0; j < u.length; j++) {
+              element = root.querySelector("#" + u[j]);
+              refNode = root.querySelector(ctx);
+              assert_false(element[method](q, refNode), "The element #" + u[j] + " should not match the selector.")
+            }
+          }
+        }, type + " Element." + method + ": " + n + " (with refNode Element): " + q);
+      }
+
+      if (ref) {
+        test(function() {
+          var j, element, refNodes;
+          for (j = 0; j < e.length; j++) {
+            element = root.querySelector("#" + e[j]);
+            refNodes = root.querySelectorAll(ref);
+            assert_true(element[method](q, refNodes), "The element #" + e[j] + " should match the selector.")
+          }
+
+          if (u) {
+            for (j = 0; j < u.length; j++) {
+              element = root.querySelector("#" + u[j]);
+              refNodes = root.querySelectorAll(ref);
+              assert_false(element[method](q, refNodes), "The element #" + u[j] + " should not match the selector.")
+            }
+          }
+        }, type + " Element." + method + ": " + n + " (with refNodes NodeList): " + q);
+      }
+
+      if (!ctx && !ref) {
+        test(function() {
+          for (var j = 0; j < e.length; j++) {
+            var element = root.querySelector("#" + e[j]);
+            assert_true(element[method](q), "The element #" + e[j] + " should match the selector.")
+          }
+
+          if (u) {
+            for (j = 0; j < u.length; j++) {
+              element = root.querySelector("#" + u[j]);
+              assert_false(element[method](q), "The element #" + u[j] + " should not match the selector.")
+            }
+          }
+        }, type + " Element." + method + ": " + n + " (with no refNodes): " + q);
+      }
+    }
+  }
+}
diff --git a/tests/wpt/dom/nodes/Element-remove.html b/tests/wpt/dom/nodes/Element-remove.html
new file mode 100644
index 00000000..ab642d66
--- /dev/null
+++ b/tests/wpt/dom/nodes/Element-remove.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Element.remove</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-childnode-remove">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="ChildNode-remove.js"></script>
+<div id=log></div>
+<script>
+var node, parentNode;
+setup(function() {
+  node = document.createElement("div");
+  parentNode = document.createElement("div");
+});
+testRemove(node, parentNode, "element");
+</script>
diff --git a/tests/wpt/dom/nodes/Element-siblingElement-null-svg.svg b/tests/wpt/dom/nodes/Element-siblingElement-null-svg.svg
new file mode 100644
index 00000000..48c981b8
--- /dev/null
+++ b/tests/wpt/dom/nodes/Element-siblingElement-null-svg.svg
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg"
+     xmlns:h="http://www.w3.org/1999/xhtml"
+     version="1.1"
+     width="100%" height="100%" viewBox="0 0 400 400">
+<title>Null test</title>
+<h:script src="/resources/testharness.js"/>
+<h:script src="/resources/testharnessreport.js"/>
+
+<text x="200" y="40" font-size="25" fill="black" text-anchor="middle">Test of previousElementSibling and nextElementSibling returning null</text>
+<text id="parentEl" x="200" y="70" font-size="20" fill="black" text-anchor="middle">The result of this test is <tspan id="first_element_child" font-weight="bold">unknown.</tspan></text>
+
+<h:script><![CDATA[
+test(function() {
+  var fec = document.getElementById("first_element_child");
+  assert_equals(fec.previousElementSibling, null)
+  assert_equals(fec.nextElementSibling, null)
+})
+]]></h:script>
+</svg>
diff --git a/tests/wpt/dom/nodes/Element-siblingElement-null-xhtml.xhtml b/tests/wpt/dom/nodes/Element-siblingElement-null-xhtml.xhtml
new file mode 100644
index 00000000..fcf4d54f
--- /dev/null
+++ b/tests/wpt/dom/nodes/Element-siblingElement-null-xhtml.xhtml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>Null Test</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<h1>Test of previousElementSibling and nextElementSibling returning null</h1>
+<div id="log"></div>
+<p id="parentEl">The result of this test is <span id="first_element_child" style="font-weight:bold;">unknown.</span></p>
+<script><![CDATA[
+test(function() {
+  var fec = document.getElementById("first_element_child");
+  assert_equals(fec.previousElementSibling, null)
+  assert_equals(fec.nextElementSibling, null)
+})
+]]></script>
+</body>
+</html>
diff --git a/tests/wpt/dom/nodes/Element-siblingElement-null.html b/tests/wpt/dom/nodes/Element-siblingElement-null.html
new file mode 100644
index 00000000..a7920b4f
--- /dev/null
+++ b/tests/wpt/dom/nodes/Element-siblingElement-null.html
@@ -0,0 +1,16 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>Null test</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<h1>Test of previousElementSibling and nextElementSibling returning null</h1>
+<div id="log"></div>
+<p id="parentEl">The result of this test is <span id="first_element_child" style="font-weight:bold;">unknown.</span></p>
+<script>
+test(function() {
+  var fec = document.getElementById("first_element_child");
+  assert_equals(fec.previousElementSibling, null)
+  assert_equals(fec.nextElementSibling, null)
+})
+</script>
+
diff --git a/tests/wpt/dom/nodes/Element-tagName.html b/tests/wpt/dom/nodes/Element-tagName.html
new file mode 100644
index 00000000..43e7a2d2
--- /dev/null
+++ b/tests/wpt/dom/nodes/Element-tagName.html
@@ -0,0 +1,57 @@
+<!DOCTYPE html>
+<title>Element.tagName</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+test(function() {
+  var HTMLNS = "http://www.w3.org/1999/xhtml"
+  assert_equals(document.createElementNS(HTMLNS, "I").tagName, "I")
+  assert_equals(document.createElementNS(HTMLNS, "i").tagName, "I")
+  assert_equals(document.createElementNS(HTMLNS, "x:b").tagName, "X:B")
+}, "tagName should upper-case for HTML elements in HTML documents.")
+
+test(function() {
+  var SVGNS = "http://www.w3.org/2000/svg"
+  assert_equals(document.createElementNS(SVGNS, "svg").tagName, "svg")
+  assert_equals(document.createElementNS(SVGNS, "SVG").tagName, "SVG")
+  assert_equals(document.createElementNS(SVGNS, "s:svg").tagName, "s:svg")
+  assert_equals(document.createElementNS(SVGNS, "s:SVG").tagName, "s:SVG")
+
+  assert_equals(document.createElementNS(SVGNS, "textPath").tagName, "textPath");
+}, "tagName should not upper-case for SVG elements in HTML documents.")
+
+test(() => {
+  const el2 = document.createElementNS("http://example.com/", "mixedCase");
+  assert_equals(el2.tagName, "mixedCase");
+}, "tagName should not upper-case for other non-HTML namespaces");
+
+test(function() {
+  if ("DOMParser" in window) {
+    var xmlel = new DOMParser()
+      .parseFromString('<div xmlns="http://www.w3.org/1999/xhtml">Test</div>', 'text/xml')
+      .documentElement;
+    assert_equals(xmlel.tagName, "div", "tagName should be lowercase in XML")
+    var htmlel = document.importNode(xmlel, true)
+    assert_equals(htmlel.tagName, "DIV", "tagName should be uppercase in HTML")
+  }
+}, "tagName should be updated when changing ownerDocument")
+
+test(function() {
+  var xmlel = document.implementation
+    .createDocument("http://www.w3.org/1999/xhtml", "div", null)
+    .documentElement;
+  assert_equals(xmlel.tagName, "div", "tagName should be lowercase in XML")
+  var htmlel = document.importNode(xmlel, true)
+  assert_equals(htmlel.tagName, "DIV", "tagName should be uppercase in HTML")
+}, "tagName should be updated when changing ownerDocument (createDocument without prefix)")
+
+test(function() {
+  var xmlel = document.implementation
+    .createDocument("http://www.w3.org/1999/xhtml", "foo:div", null)
+    .documentElement;
+  assert_equals(xmlel.tagName, "foo:div", "tagName should be lowercase in XML")
+  var htmlel = document.importNode(xmlel, true)
+  assert_equals(htmlel.tagName, "FOO:DIV", "tagName should be uppercase in HTML")
+}, "tagName should be updated when changing ownerDocument (createDocument with prefix)")
+</script>
diff --git a/tests/wpt/dom/nodes/Element-webkitMatchesSelector.html b/tests/wpt/dom/nodes/Element-webkitMatchesSelector.html
new file mode 100644
index 00000000..107f8102
--- /dev/null
+++ b/tests/wpt/dom/nodes/Element-webkitMatchesSelector.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<title>Selectors-API Level 2 Test Suite: HTML with Selectors Level 3</title>
+<!-- Selectors API Test Suite Version 3 -->
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/dom/nodes/selectors.js"></script>
+<script src="/dom/nodes/ParentNode-querySelector-All.js"></script>
+<script src="Element-matches.js"></script>
+<script src="Element-matches-init.js"></script>
+<style>iframe { visibility: hidden; position: absolute; }</style>
+
+<div id="log">This test requires JavaScript.</div>
+
+<script>
+  async_test(function() {
+    var frame = document.createElement("iframe");
+    frame.onload = this.step_func_done(e => init(e, "webkitMatchesSelector" ));
+    frame.src = "/dom/nodes/ParentNode-querySelector-All-content.html#target";
+    document.body.appendChild(frame);
+  });
+</script>
diff --git a/tests/wpt/dom/nodes/NodeList-Iterable.html b/tests/wpt/dom/nodes/NodeList-Iterable.html
new file mode 100644
index 00000000..fcbee175
--- /dev/null
+++ b/tests/wpt/dom/nodes/NodeList-Iterable.html
@@ -0,0 +1,61 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>NodeList Iterable Test</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+    <p id="1"></p>
+    <p id="2"></p>
+    <p id="3"></p>
+    <p id="4"></p>
+    <p id="5"></p>
+
+    <div id="live"><b id="b1">1</b><b id="b2">2</b><b id="b3">3</b></div>
+<script>
+    var paragraphs;
+    setup(function() {
+        paragraphs = document.querySelectorAll('p');
+    })
+    test(function() {
+        assert_true('length' in paragraphs);
+    }, 'NodeList has length method.');
+    test(function() {
+        assert_true('values' in paragraphs);
+    }, 'NodeList has values method.');
+    test(function() {
+        assert_true('entries' in paragraphs);
+    }, 'NodeList has entries method.');
+    test(function() {
+        assert_true('forEach' in paragraphs);
+    }, 'NodeList has forEach method.');
+    test(function() {
+        assert_true(Symbol.iterator in paragraphs);
+    }, 'NodeList has Symbol.iterator.');
+    test(function() {
+        var ids = "12345", idx=0;
+        for(var node of paragraphs){
+            assert_equals(node.getAttribute('id'), ids[idx++]);
+        }
+    }, 'NodeList is iterable via for-of loop.');
+
+    test(function() {
+        assert_array_equals(Object.keys(paragraphs), ['0', '1', '2', '3', '4']);
+    }, 'NodeList responds to Object.keys correctly');
+
+    test(function() {
+        var container = document.getElementById('live');
+        var nodeList = container.childNodes;
+
+        var ids = [];
+        for (var el of nodeList) {
+            ids.push(el.id);
+            assert_equals(el.localName, 'b');
+            if (ids.length < 3) {
+                var newEl = document.createElement('b');
+                newEl.id = 'after' + el.id;
+                container.appendChild(newEl);
+            }
+        }
+
+        assert_array_equals(ids, ['b1', 'b2', 'b3', 'afterb1', 'afterb2']);
+    }, 'live NodeLists are for-of iterable and update appropriately');
+</script>
diff --git a/tests/wpt/dom/nodes/NodeList-live-mutations.window.js b/tests/wpt/dom/nodes/NodeList-live-mutations.window.js
new file mode 100644
index 00000000..a11fed1e
--- /dev/null
+++ b/tests/wpt/dom/nodes/NodeList-live-mutations.window.js
@@ -0,0 +1,79 @@
+function testNodeList(name, hooks) {
+  test(() => {
+    const nodes = {
+      root: document.createElement("div"),
+      div1: document.createElement("div"),
+      div2: document.createElement("div"),
+      p: document.createElement("p")
+    };
+
+    const list = nodes.root.childNodes;
+
+    hooks.initial(list, nodes);
+
+    nodes.root.appendChild(nodes.div1);
+    nodes.root.appendChild(nodes.p);
+    nodes.root.appendChild(nodes.div2);
+
+    hooks.afterInsertion(list, nodes);
+
+    nodes.root.removeChild(nodes.div1);
+
+    hooks.afterRemoval(list, nodes);
+  }, `NodeList live mutations: ${name}`);
+}
+
+testNodeList("NodeList.length", {
+  initial(list) {
+    assert_equals(list.length, 0);
+  },
+  afterInsertion(list) {
+    assert_equals(list.length, 3);
+  },
+  afterRemoval(list) {
+    assert_equals(list.length, 2);
+  }
+});
+
+testNodeList("NodeList.item(index)", {
+  initial(list) {
+    assert_equals(list.item(0), null);
+  },
+  afterInsertion(list, nodes) {
+    assert_equals(list.item(0), nodes.div1);
+    assert_equals(list.item(1), nodes.p);
+    assert_equals(list.item(2), nodes.div2);
+  },
+  afterRemoval(list, nodes) {
+    assert_equals(list.item(0), nodes.p);
+    assert_equals(list.item(1), nodes.div2);
+  }
+});
+
+testNodeList("NodeList[index]", {
+  initial(list) {
+    assert_equals(list[0], undefined);
+  },
+  afterInsertion(list, nodes) {
+    assert_equals(list[0], nodes.div1);
+    assert_equals(list[1], nodes.p);
+    assert_equals(list[2], nodes.div2);
+  },
+  afterRemoval(list, nodes) {
+    assert_equals(list[0], nodes.p);
+    assert_equals(list[1], nodes.div2);
+  }
+});
+
+testNodeList("NodeList ownPropertyNames", {
+  initial(list) {
+    assert_object_equals(Object.getOwnPropertyNames(list), []);
+  },
+  afterInsertion(list) {
+    assert_object_equals(Object.getOwnPropertyNames(list), ["0", "1", "2"]);
+  },
+  afterRemoval(list) {
+    assert_object_equals(Object.getOwnPropertyNames(list), ["0", "1"]);
+  }
+});
+
diff --git a/tests/wpt/dom/nodes/NodeList-static-length-getter-tampered-1.html b/tests/wpt/dom/nodes/NodeList-static-length-getter-tampered-1.html
new file mode 100644
index 00000000..c5c58f9d
--- /dev/null
+++ b/tests/wpt/dom/nodes/NodeList-static-length-getter-tampered-1.html
@@ -0,0 +1,22 @@
+<!doctype html>
+<meta charset="utf-8">
+<meta name=timeout content=long>
+<title>NodeList (static collection) "length" getter tampered</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<body>
+
+<script src="support/NodeList-static-length-tampered.js"></script>
+<script>
+test(() => {
+    const nodeList = makeStaticNodeList(100);
+
+    for (var i = 0; i < 50; i++) {
+        if (i === 25)
+            Object.defineProperty(nodeList, "length", { get() { return 10; } });
+
+        assert_equals(indexOfNodeList(nodeList), i >= 25 ? -1 : 50);
+    }
+});
+</script>
diff --git a/tests/wpt/dom/nodes/NodeList-static-length-getter-tampered-2.html b/tests/wpt/dom/nodes/NodeList-static-length-getter-tampered-2.html
new file mode 100644
index 00000000..bac05112
--- /dev/null
+++ b/tests/wpt/dom/nodes/NodeList-static-length-getter-tampered-2.html
@@ -0,0 +1,22 @@
+<!doctype html>
+<meta charset="utf-8">
+<meta name=timeout content=long>
+<title>NodeList (static collection) "length" getter tampered</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<body>
+
+<script src="support/NodeList-static-length-tampered.js"></script>
+<script>
+test(() => {
+    const nodeList = makeStaticNodeList(100);
+
+    for (var i = 0; i < 50; i++) {
+        if (i === 25)
+            Object.setPrototypeOf(nodeList, { get length() { return 10; } });
+
+        assert_equals(indexOfNodeList(nodeList), i >= 25 ? -1 : 50);
+    }
+});
+</script>
diff --git a/tests/wpt/dom/nodes/NodeList-static-length-getter-tampered-3.html b/tests/wpt/dom/nodes/NodeList-static-length-getter-tampered-3.html
new file mode 100644
index 00000000..9690aab3
--- /dev/null
+++ b/tests/wpt/dom/nodes/NodeList-static-length-getter-tampered-3.html
@@ -0,0 +1,22 @@
+<!doctype html>
+<meta charset="utf-8">
+<meta name=timeout content=long>
+<title>NodeList (static collection) "length" getter tampered</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<body>
+
+<script src="support/NodeList-static-length-tampered.js"></script>
+<script>
+test(() => {
+    const nodeList = makeStaticNodeList(100);
+
+    for (var i = 0; i < 50; i++) {
+        if (i === 25)
+            Object.defineProperty(NodeList.prototype, "length", { get() { return 10; } });
+
+        assert_equals(indexOfNodeList(nodeList), i >= 25 ? -1 : 50);
+    }
+});
+</script>
diff --git a/tests/wpt/dom/nodes/NodeList-static-length-getter-tampered-indexOf-1.html b/tests/wpt/dom/nodes/NodeList-static-length-getter-tampered-indexOf-1.html
new file mode 100644
index 00000000..5ce41467
--- /dev/null
+++ b/tests/wpt/dom/nodes/NodeList-static-length-getter-tampered-indexOf-1.html
@@ -0,0 +1,22 @@
+<!doctype html>
+<meta charset="utf-8">
+<meta name=timeout content=long>
+<title>NodeList (static collection) "length" getter tampered (Array.prototype.indexOf)</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<body>
+
+<script src="support/NodeList-static-length-tampered.js"></script>
+<script>
+test(() => {
+    const nodeList = makeStaticNodeList(100);
+
+    for (var i = 0; i < 50; i++) {
+        if (i === 25)
+            Object.defineProperty(nodeList, "length", { get() { return 10; } });
+
+        assert_equals(arrayIndexOfNodeList(nodeList), i >= 25 ? -1 : 50);
+    }
+});
+</script>
diff --git a/tests/wpt/dom/nodes/NodeList-static-length-getter-tampered-indexOf-2.html b/tests/wpt/dom/nodes/NodeList-static-length-getter-tampered-indexOf-2.html
new file mode 100644
index 00000000..57814ed5
--- /dev/null
+++ b/tests/wpt/dom/nodes/NodeList-static-length-getter-tampered-indexOf-2.html
@@ -0,0 +1,22 @@
+<!doctype html>
+<meta charset="utf-8">
+<meta name=timeout content=long>
+<title>NodeList (static collection) "length" getter tampered (Array.prototype.indexOf)</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<body>
+
+<script src="support/NodeList-static-length-tampered.js"></script>
+<script>
+test(() => {
+    const nodeList = makeStaticNodeList(100);
+
+    for (var i = 0; i < 50; i++) {
+        if (i === 25)
+            Object.setPrototypeOf(nodeList, { get length() { return 10; } });
+
+        assert_equals(arrayIndexOfNodeList(nodeList), i >= 25 ? -1 : 50);
+    }
+});
+</script>
diff --git a/tests/wpt/dom/nodes/NodeList-static-length-getter-tampered-indexOf-3.html b/tests/wpt/dom/nodes/NodeList-static-length-getter-tampered-indexOf-3.html
new file mode 100644
index 00000000..838f376d
--- /dev/null
+++ b/tests/wpt/dom/nodes/NodeList-static-length-getter-tampered-indexOf-3.html
@@ -0,0 +1,22 @@
+<!doctype html>
+<meta charset="utf-8">
+<meta name=timeout content=long>
+<title>NodeList (static collection) "length" getter tampered (Array.prototype.indexOf)</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<body>
+
+<script src="support/NodeList-static-length-tampered.js"></script>
+<script>
+test(() => {
+    const nodeList = makeStaticNodeList(100);
+
+    for (var i = 0; i < 50; i++) {
+        if (i === 25)
+            Object.defineProperty(NodeList.prototype, "length", { get() { return 10; } });
+
+        assert_equals(arrayIndexOfNodeList(nodeList), i >= 25 ? -1 : 50);
+    }
+});
+</script>
diff --git a/tests/wpt/dom/nodes/ParentNode-querySelector-All-content.html b/tests/wpt/dom/nodes/ParentNode-querySelector-All-content.html
new file mode 100644
index 00000000..8dc13545
--- /dev/null
+++ b/tests/wpt/dom/nodes/ParentNode-querySelector-All-content.html
@@ -0,0 +1,377 @@
+<!DOCTYPE html>
+<html id="html" lang="en">
+<head id="head">
+  <meta id="meta" charset="UTF-8">
+  <title id="title">Selectors-API Test Suite: HTML with Selectors Level 2 using TestHarness: Test Document</title>
+
+  <!-- Links for :link and :visited pseudo-class test -->
+  <link id="pseudo-link-link1" href="">
+  <link id="pseudo-link-link2" href="http://example.org/">
+  <link id="pseudo-link-link3">
+  <style>
+  @namespace ns "http://www.w3.org/1999/xhtml";
+   /* Declare the namespace prefix used in tests. This declaration should not be used by the API. */
+  </style>
+</head>
+<body id="body">
+<div id="root">
+  <div id="target"></div>
+
+  <div id="universal">
+    <p id="universal-p1">Universal selector tests inside element with <code id="universal-code1">id="universal"</code>.</p>
+    <hr id="universal-hr1">
+    <pre id="universal-pre1">Some preformatted text with some <span id="universal-span1">embedded code</span></pre>
+    <p id="universal-p2">This is a normal link: <a id="universal-a1" href="http://www.w3.org/">W3C</a></p>
+    <address id="universal-address1">Some more nested elements <code id="universal-code2"><a href="#" id="universal-a2">code hyperlink</a></code></address>
+  </div>
+
+  <div id="attr-presence">
+    <div class="attr-presence-div1" id="attr-presence-div1" align="center"></div>
+    <div class="attr-presence-div2" id="attr-presence-div2" align=""></div>
+    <div class="attr-presence-div3" id="attr-presence-div3" valign="center"></div>
+    <div class="attr-presence-div4" id="attr-presence-div4" alignv="center"></div>
+    <p id="attr-presence-p1"><a  id="attr-presence-a1" tItLe=""></a><span id="attr-presence-span1" TITLE="attr-presence-span1"></span><i id="attr-presence-i1"></i></p>
+    <pre id="attr-presence-pre1" data-attr-presence="pre1"></pre>
+    <blockquote id="attr-presence-blockquote1" data-attr-presence="blockquote1"></blockquote>
+    <ul id="attr-presence-ul1" data-中文=""></ul>
+
+    <select id="attr-presence-select1">
+      <option id="attr-presence-select1-option1">A</option>
+      <option id="attr-presence-select1-option2">B</option>
+      <option id="attr-presence-select1-option3">C</option>
+      <option id="attr-presence-select1-option4">D</option>
+    </select>
+    <select id="attr-presence-select2">
+      <option id="attr-presence-select2-option1">A</option>
+      <option id="attr-presence-select2-option2">B</option>
+      <option id="attr-presence-select2-option3">C</option>
+      <option id="attr-presence-select2-option4" selected="selected">D</option>
+    </select>
+    <select id="attr-presence-select3" multiple="multiple">
+      <option id="attr-presence-select3-option1">A</option>
+      <option id="attr-presence-select3-option2" selected="">B</option>
+      <option id="attr-presence-select3-option3" selected="selected">C</option>
+      <option id="attr-presence-select3-option4">D</option>
+    </select>
+  </div>
+
+  <div id="attr-value">
+    <div id="attr-value-div1" align="center"></div>
+      <div id="attr-value-div2" align=""></div>
+      <div id="attr-value-div3" data-attr-value="&#xE9;"></div>
+      <div id="attr-value-div4" data-attr-value_foo="&#xE9;"></div>
+
+    <form id="attr-value-form1">
+      <input id="attr-value-input1" type="text">
+      <input id="attr-value-input2" type="password">
+      <input id="attr-value-input3" type="hidden">
+      <input id="attr-value-input4" type="radio">
+      <input id="attr-value-input5" type="checkbox">
+      <input id="attr-value-input6" type="radio">
+      <input id="attr-value-input7" type="text">
+      <input id="attr-value-input8" type="hidden">
+      <input id="attr-value-input9" type="radio">
+    </form>
+
+    <div id="attr-value-div5" data-attr-value="中文"></div>
+  </div>
+
+  <div id="attr-whitespace">
+    <div id="attr-whitespace-div1" class="foo div1 bar"></div>
+      <div id="attr-whitespace-div2" class=""></div>
+      <div id="attr-whitespace-div3" class="foo div3 bar"></div>
+
+      <div id="attr-whitespace-div4" data-attr-whitespace="foo &#xE9; bar"></div>
+      <div id="attr-whitespace-div5" data-attr-whitespace_foo="&#xE9; foo"></div>
+
+    <a id="attr-whitespace-a1" rel="next bookmark"></a>
+    <a id="attr-whitespace-a2" rel="tag nofollow"></a>
+    <a id="attr-whitespace-a3" rel="tag bookmark"></a>
+    <a id="attr-whitespace-a4" rel="book mark"></a> <!-- Intentional space in "book mark" -->
+    <a id="attr-whitespace-a5" rel="nofollow"></a>
+    <a id="attr-whitespace-a6" rev="bookmark nofollow"></a>
+    <a id="attr-whitespace-a7" rel="prev next tag alternate nofollow author help icon noreferrer prefetch search stylesheet tag"></a>
+
+    <p id="attr-whitespace-p1" title="Chinese 中文 characters"></p>
+  </div>
+
+  <div id="attr-hyphen">
+    <div id="attr-hyphen-div1"></div>
+      <div id="attr-hyphen-div2" lang="fr"></div>
+      <div id="attr-hyphen-div3" lang="en-AU"></div>
+      <div id="attr-hyphen-div4" lang="es"></div>
+  </div>
+
+  <div id="attr-begins">
+    <a id="attr-begins-a1" href="http://www.example.org"></a>
+    <a id="attr-begins-a2" href="http://example.org/"></a>
+    <a id="attr-begins-a3" href="http://www.example.com/"></a>
+
+      <div id="attr-begins-div1" lang="fr"></div>
+      <div id="attr-begins-div2" lang="en-AU"></div>
+      <div id="attr-begins-div3" lang="es"></div>
+      <div id="attr-begins-div4" lang="en-US"></div>
+      <div id="attr-begins-div5" lang="en"></div>
+
+    <p id="attr-begins-p1" class=" apple"></p> <!-- Intentional space in class value " apple". -->
+  </div>
+
+  <div id="attr-ends">
+    <a id="attr-ends-a1" href="http://www.example.org"></a>
+    <a id="attr-ends-a2" href="http://example.org/"></a>
+    <a id="attr-ends-a3" href="http://www.example.org"></a>
+
+      <div id="attr-ends-div1" lang="fr"></div>
+      <div id="attr-ends-div2" lang="de-CH"></div>
+      <div id="attr-ends-div3" lang="es"></div>
+      <div id="attr-ends-div4" lang="fr-CH"></div>
+
+    <p id="attr-ends-p1" class="apple "></p> <!-- Intentional space in class value "apple ". -->
+  </div>
+
+  <div id="attr-contains">
+    <a id="attr-contains-a1" href="http://www.example.org"></a>
+    <a id="attr-contains-a2" href="http://example.org/"></a>
+    <a id="attr-contains-a3" href="http://www.example.com/"></a>
+
+      <div id="attr-contains-div1" lang="fr"></div>
+      <div id="attr-contains-div2" lang="en-AU"></div>
+      <div id="attr-contains-div3" lang="de-CH"></div>
+      <div id="attr-contains-div4" lang="es"></div>
+      <div id="attr-contains-div5" lang="fr-CH"></div>
+      <div id="attr-contains-div6" lang="en-US"></div>
+
+    <p id="attr-contains-p1" class=" apple banana orange "></p>
+  </div>
+
+  <div id="pseudo-nth">
+    <table id="pseudo-nth-table1">
+      <tr id="pseudo-nth-tr1"><td id="pseudo-nth-td1"></td><td id="pseudo-nth-td2"></td><td id="pseudo-nth-td3"></td><td id="pseudo-nth-td4"></td><td id="pseudo-nth--td5"></td><td id="pseudo-nth-td6"></td></tr>
+      <tr id="pseudo-nth-tr2"><td id="pseudo-nth-td7"></td><td id="pseudo-nth-td8"></td><td id="pseudo-nth-td9"></td><td id="pseudo-nth-td10"></td><td id="pseudo-nth-td11"></td><td id="pseudo-nth-td12"></td></tr>
+      <tr id="pseudo-nth-tr3"><td id="pseudo-nth-td13"></td><td id="pseudo-nth-td14"></td><td id="pseudo-nth-td15"></td><td id="pseudo-nth-td16"></td><td id="pseudo-nth-td17"></td><td id="pseudo-nth-td18"></td></tr>
+    </table>
+
+    <ol id="pseudo-nth-ol1">
+      <li id="pseudo-nth-li1"></li>
+      <li id="pseudo-nth-li2"></li>
+      <li id="pseudo-nth-li3"></li>
+      <li id="pseudo-nth-li4"></li>
+      <li id="pseudo-nth-li5"></li>
+      <li id="pseudo-nth-li6"></li>
+      <li id="pseudo-nth-li7"></li>
+      <li id="pseudo-nth-li8"></li>
+      <li id="pseudo-nth-li9"></li>
+      <li id="pseudo-nth-li10"></li>
+      <li id="pseudo-nth-li11"></li>
+      <li id="pseudo-nth-li12"></li>
+    </ol>
+
+    <p id="pseudo-nth-p1">
+      <span id="pseudo-nth-span1">span1</span>
+      <em id="pseudo-nth-em1">em1</em>
+      <!-- comment node-->
+      <em id="pseudo-nth-em2">em2</em>
+      <span id="pseudo-nth-span2">span2</span>
+      <strong id="pseudo-nth-strong1">strong1</strong>
+      <em id="pseudo-nth-em3">em3</em>
+      <span id="pseudo-nth-span3">span3</span>
+      <span id="pseudo-nth-span4">span4</span>
+      <strong id="pseudo-nth-strong2">strong2</strong>
+      <em id="pseudo-nth-em4">em4</em>
+    </p>
+  </div>
+
+  <div id="pseudo-first-child">
+    <div id="pseudo-first-child-div1"></div>
+    <div id="pseudo-first-child-div2"></div>
+    <div id="pseudo-first-child-div3"></div>
+
+    <p id="pseudo-first-child-p1"><span id="pseudo-first-child-span1"></span><span id="pseudo-first-child-span2"></span></p>
+    <p id="pseudo-first-child-p2"><span id="pseudo-first-child-span3"></span><span id="pseudo-first-child-span4"></span></p>
+    <p id="pseudo-first-child-p3"><span id="pseudo-first-child-span5"></span><span id="pseudo-first-child-span6"></span></p>
+  </div>
+
+  <div id="pseudo-last-child">
+    <p id="pseudo-last-child-p1"><span id="pseudo-last-child-span1"></span><span id="pseudo-last-child-span2"></span></p>
+    <p id="pseudo-last-child-p2"><span id="pseudo-last-child-span3"></span><span id="pseudo-last-child-span4"></span></p>
+    <p id="pseudo-last-child-p3"><span id="pseudo-last-child-span5"></span><span id="pseudo-last-child-span6"></span></p>
+
+    <div id="pseudo-last-child-div1"></div>
+    <div id="pseudo-last-child-div2"></div>
+    <div id="pseudo-last-child-div3"></div>
+  </div>
+
+  <div id="pseudo-only">
+    <p id="pseudo-only-p1">
+      <span id="pseudo-only-span1"></span>
+    </p>
+    <p id="pseudo-only-p2">
+      <span id="pseudo-only-span2"></span>
+      <span id="pseudo-only-span3"></span>
+    </p>
+    <p id="pseudo-only-p3">
+      <span id="pseudo-only-span4"></span>
+      <em id="pseudo-only-em1"></em>
+      <span id="pseudo-only-span5"></span>
+    </p>
+  </div>>
+
+  <div id="pseudo-empty">
+    <p id="pseudo-empty-p1"></p>
+    <p id="pseudo-empty-p2"><!-- comment node --></p>
+    <p id="pseudo-empty-p3"> </p>
+    <p id="pseudo-empty-p4">Text node</p>
+    <p id="pseudo-empty-p5"><span id="pseudo-empty-span1"></span></p>
+  </div>
+
+  <div id="pseudo-link">
+    <a id="pseudo-link-a1" href="">with href</a>
+    <a id="pseudo-link-a2" href="http://example.org/">with href</a>
+    <a id="pseudo-link-a3">without href</a>
+    <map name="pseudo-link-map1" id="pseudo-link-map1">
+      <area id="pseudo-link-area1" href="">
+      <area id="pseudo-link-area2">
+    </map>
+  </div>
+
+  <div id="pseudo-lang">
+    <div id="pseudo-lang-div1"></div>
+      <div id="pseudo-lang-div2" lang="fr"></div>
+      <div id="pseudo-lang-div3" lang="en-AU"></div>
+      <div id="pseudo-lang-div4" lang="es"></div>
+  </div>
+
+  <div id="pseudo-ui">
+    <input id="pseudo-ui-input1" type="text">
+    <input id="pseudo-ui-input2" type="password">
+    <input id="pseudo-ui-input3" type="radio">
+    <input id="pseudo-ui-input4" type="radio" checked="checked">
+    <input id="pseudo-ui-input5" type="checkbox">
+    <input id="pseudo-ui-input6" type="checkbox" checked="checked">
+    <input id="pseudo-ui-input7" type="submit">
+    <input id="pseudo-ui-input8" type="button">
+    <input id="pseudo-ui-input9" type="hidden">
+    <textarea id="pseudo-ui-textarea1"></textarea>
+    <button id="pseudo-ui-button1">Enabled</button>
+
+    <input id="pseudo-ui-input10" disabled="disabled" type="text">
+    <input id="pseudo-ui-input11" disabled="disabled" type="password">
+    <input id="pseudo-ui-input12" disabled="disabled" type="radio">
+    <input id="pseudo-ui-input13" disabled="disabled" type="radio" checked="checked">
+    <input id="pseudo-ui-input14" disabled="disabled" type="checkbox">
+    <input id="pseudo-ui-input15" disabled="disabled" type="checkbox" checked="checked">
+    <input id="pseudo-ui-input16" disabled="disabled" type="submit">
+    <input id="pseudo-ui-input17" disabled="disabled" type="button">
+    <input id="pseudo-ui-input18" disabled="disabled" type="hidden">
+    <textarea id="pseudo-ui-textarea2" disabled="disabled"></textarea>
+    <button id="pseudo-ui-button2" disabled="disabled">Disabled</button>
+  </div>
+
+  <div id="not">
+    <div id="not-div1"></div>
+    <div id="not-div2"></div>
+    <div id="not-div3"></div>
+
+    <p id="not-p1"><span id="not-span1"></span><em id="not-em1"></em></p>
+    <p id="not-p2"><span id="not-span2"></span><em id="not-em2"></em></p>
+    <p id="not-p3"><span id="not-span3"></span><em id="not-em3"></em></p>
+  </div>
+
+  <div id="pseudo-element">All pseudo-element tests</div>
+
+  <div id="class">
+    <p id="class-p1" class="foo class-p bar"></p>
+    <p id="class-p2" class="class-p foo bar"></p>
+    <p id="class-p3" class="foo bar class-p"></p>
+
+    <!-- All permutations of the classes should match -->
+    <div id="class-div1" class="apple orange banana"></div>
+    <div id="class-div2" class="apple banana orange"></div>
+    <p id="class-p4" class="orange apple banana"></p>
+    <div id="class-div3" class="orange banana apple"></div>
+    <p id="class-p6" class="banana apple orange"></p>
+    <div id="class-div4" class="banana orange apple"></div>
+    <div id="class-div5" class="apple orange"></div>
+    <div id="class-div6" class="apple banana"></div>
+    <div id="class-div7" class="orange banana"></div>
+
+    <span id="class-span1" class="台北Táiběi 台北"></span>
+    <span id="class-span2" class="台北"></span>
+
+    <span id="class-span3" class="foo:bar"></span>
+    <span id="class-span4" class="test.foo[5]bar"></span>
+  </div>
+
+  <div id="id">
+    <div id="id-div1"></div>
+    <div id="id-div2"></div>
+
+    <ul id="id-ul1">
+      <li id="id-li-duplicate"></li>
+      <li id="id-li-duplicate"></li>
+      <li id="id-li-duplicate"></li>
+      <li id="id-li-duplicate"></li>
+    </ul>
+
+    <span id="台北Táiběi"></span>
+    <span id="台北"></span>
+
+    <span id="#foo:bar"></span>
+    <span id="test.foo[5]bar"></span>
+  </div>
+
+  <div id="descendant">
+    <div id="descendant-div1" class="descendant-div1">
+      <div id="descendant-div2" class="descendant-div2">
+        <div id="descendant-div3" class="descendant-div3">
+        </div>
+      </div>
+    </div>
+    <div id="descendant-div4" class="descendant-div4"></div>
+  </div>
+
+  <div id="child">
+    <div id="child-div1" class="child-div1">
+      <div id="child-div2" class="child-div2">
+        <div id="child-div3" class="child-div3">
+        </div>
+      </div>
+    </div>
+    <div id="child-div4" class="child-div4"></div>
+  </div>
+
+  <div id="adjacent">
+    <div id="adjacent-div1" class="adjacent-div1"></div>
+    <div id="adjacent-div2" class="adjacent-div2">
+      <div id="adjacent-div3" class="adjacent-div3"></div>
+    </div>
+    <div id="adjacent-div4" class="adjacent-div4">
+      <p id="adjacent-p1" class="adjacent-p1"></p>
+      <div id="adjacent-div5" class="adjacent-div5"></div>
+    </div>
+    <div id="adjacent-div6" class="adjacent-div6"></div>
+    <p id="adjacent-p2" class="adjacent-p2"></p>
+    <p id="adjacent-p3" class="adjacent-p3"></p>
+  </div>
+
+  <div id="sibling">
+    <div id="sibling-div1" class="sibling-div"></div>
+    <div id="sibling-div2" class="sibling-div">
+      <div id="sibling-div3" class="sibling-div"></div>
+    </div>
+    <div id="sibling-div4" class="sibling-div">
+      <p id="sibling-p1" class="sibling-p"></p>
+      <div id="sibling-div5" class="sibling-div"></div>
+    </div>
+    <div id="sibling-div6" class="sibling-div"></div>
+    <p id="sibling-p2" class="sibling-p"></p>
+    <p id="sibling-p3" class="sibling-p"></p>
+  </div>
+
+  <div id="group">
+    <em id="group-em1"></em>
+    <strong id="group-strong1"></strong>
+  </div>
+</div>
+</body>
+</html>
diff --git a/tests/wpt/dom/nodes/ParentNode-querySelector-All-content.xht b/tests/wpt/dom/nodes/ParentNode-querySelector-All-content.xht
new file mode 100644
index 00000000..0e9b925f
--- /dev/null
+++ b/tests/wpt/dom/nodes/ParentNode-querySelector-All-content.xht
@@ -0,0 +1,372 @@
+<!DOCTYPE html>
+<html id="html" lang="en" xmlns="http://www.w3.org/1999/xhtml">
+<head id="head">
+  <title id="title">Selectors-API Test Suite: HTML with Selectors Level 2 using TestHarness: Test Document</title>
+
+  <!-- Links for :link and :visited pseudo-class test -->
+  <link id="pseudo-link-link1" href=""/>
+  <link id="pseudo-link-link2" href="http://example.org/"/>
+  <link id="pseudo-link-link3"/>
+</head>
+<body id="body">
+<div id="root">
+  <div id="target"></div>
+
+  <div id="universal">
+    <p id="universal-p1">Universal selector tests inside element with <code id="universal-code1">id="universal"</code>.</p>
+    <hr id="universal-hr1"/>
+    <pre id="universal-pre1">Some preformatted text with some <span id="universal-span1">embedded code</span></pre>
+    <p id="universal-p2">This is a normal link: <a id="universal-a1" href="http://www.w3.org/">W3C</a></p>
+    <address id="universal-address1">Some more nested elements <code id="universal-code2"><a href="#" id="universal-a2">code hyperlink</a></code></address>
+  </div>
+
+  <div id="attr-presence">
+    <div class="attr-presence-div1" id="attr-presence-div1" align="center"></div>
+    <div class="attr-presence-div2" id="attr-presence-div2" align=""></div>
+    <div class="attr-presence-div3" id="attr-presence-div3" valign="center"></div>
+    <div class="attr-presence-div4" id="attr-presence-div4" alignv="center"></div>
+    <p id="attr-presence-p1"><a  id="attr-presence-a1" tItLe=""></a><span id="attr-presence-span1" TITLE="attr-presence-span1"></span><i id="attr-presence-i1"></i></p>
+    <pre id="attr-presence-pre1" data-attr-presence="pre1"></pre>
+    <blockquote id="attr-presence-blockquote1" data-attr-presence="blockquote1"></blockquote>
+    <ul id="attr-presence-ul1" data-中文=""></ul>
+
+    <select id="attr-presence-select1">
+      <option id="attr-presence-select1-option1">A</option>
+      <option id="attr-presence-select1-option2">B</option>
+      <option id="attr-presence-select1-option3">C</option>
+      <option id="attr-presence-select1-option4">D</option>
+    </select>
+    <select id="attr-presence-select2">
+      <option id="attr-presence-select2-option1">A</option>
+      <option id="attr-presence-select2-option2">B</option>
+      <option id="attr-presence-select2-option3">C</option>
+      <option id="attr-presence-select2-option4" selected="selected">D</option>
+    </select>
+    <select id="attr-presence-select3" multiple="multiple">
+      <option id="attr-presence-select3-option1">A</option>
+      <option id="attr-presence-select3-option2" selected="">B</option>
+      <option id="attr-presence-select3-option3" selected="selected">C</option>
+      <option id="attr-presence-select3-option4">D</option>
+    </select>
+  </div>
+
+  <div id="attr-value">
+    <div id="attr-value-div1" align="center"></div>
+      <div id="attr-value-div2" align=""></div>
+      <div id="attr-value-div3" data-attr-value="&#xE9;"></div>
+      <div id="attr-value-div4" data-attr-value_foo="&#xE9;"></div>
+
+    <form id="attr-value-form1">
+      <input id="attr-value-input1" type="text"/>
+      <input id="attr-value-input2" type="password"/>
+      <input id="attr-value-input3" type="hidden"/>
+      <input id="attr-value-input4" type="radio"/>
+      <input id="attr-value-input5" type="checkbox"/>
+      <input id="attr-value-input6" type="radio"/>
+      <input id="attr-value-input7" type="text"/>
+      <input id="attr-value-input8" type="hidden"/>
+      <input id="attr-value-input9" type="radio"/>
+    </form>
+
+    <div id="attr-value-div5" data-attr-value="中文"></div>
+  </div>
+
+  <div id="attr-whitespace">
+    <div id="attr-whitespace-div1" class="foo div1 bar"></div>
+      <div id="attr-whitespace-div2" class=""></div>
+      <div id="attr-whitespace-div3" class="foo div3 bar"></div>
+
+      <div id="attr-whitespace-div4" data-attr-whitespace="foo &#xE9; bar"></div>
+      <div id="attr-whitespace-div5" data-attr-whitespace_foo="&#xE9; foo"></div>
+
+    <a id="attr-whitespace-a1" rel="next bookmark"></a>
+    <a id="attr-whitespace-a2" rel="tag nofollow"></a>
+    <a id="attr-whitespace-a3" rel="tag bookmark"></a>
+    <a id="attr-whitespace-a4" rel="book mark"></a> <!-- Intentional space in "book mark" -->
+    <a id="attr-whitespace-a5" rel="nofollow"></a>
+    <a id="attr-whitespace-a6" rev="bookmark nofollow"></a>
+    <a id="attr-whitespace-a7" rel="prev next tag alternate nofollow author help icon noreferrer prefetch search stylesheet tag"></a>
+
+    <p id="attr-whitespace-p1" title="Chinese 中文 characters"></p>
+  </div>
+
+  <div id="attr-hyphen">
+    <div id="attr-hyphen-div1"></div>
+      <div id="attr-hyphen-div2" lang="fr"></div>
+      <div id="attr-hyphen-div3" lang="en-AU"></div>
+      <div id="attr-hyphen-div4" lang="es"></div>
+  </div>
+
+  <div id="attr-begins">
+    <a id="attr-begins-a1" href="http://www.example.org"></a>
+    <a id="attr-begins-a2" href="http://example.org/"></a>
+    <a id="attr-begins-a3" href="http://www.example.com/"></a>
+
+      <div id="attr-begins-div1" lang="fr"></div>
+      <div id="attr-begins-div2" lang="en-AU"></div>
+      <div id="attr-begins-div3" lang="es"></div>
+      <div id="attr-begins-div4" lang="en-US"></div>
+      <div id="attr-begins-div5" lang="en"></div>
+
+    <p id="attr-begins-p1" class=" apple"></p> <!-- Intentional space in class value " apple". -->
+  </div>
+
+  <div id="attr-ends">
+    <a id="attr-ends-a1" href="http://www.example.org"></a>
+    <a id="attr-ends-a2" href="http://example.org/"></a>
+    <a id="attr-ends-a3" href="http://www.example.org"></a>
+
+      <div id="attr-ends-div1" lang="fr"></div>
+      <div id="attr-ends-div2" lang="de-CH"></div>
+      <div id="attr-ends-div3" lang="es"></div>
+      <div id="attr-ends-div4" lang="fr-CH"></div>
+
+    <p id="attr-ends-p1" class="apple "></p> <!-- Intentional space in class value "apple ". -->
+  </div>
+
+  <div id="attr-contains">
+    <a id="attr-contains-a1" href="http://www.example.org"></a>
+    <a id="attr-contains-a2" href="http://example.org/"></a>
+    <a id="attr-contains-a3" href="http://www.example.com/"></a>
+
+      <div id="attr-contains-div1" lang="fr"></div>
+      <div id="attr-contains-div2" lang="en-AU"></div>
+      <div id="attr-contains-div3" lang="de-CH"></div>
+      <div id="attr-contains-div4" lang="es"></div>
+      <div id="attr-contains-div5" lang="fr-CH"></div>
+      <div id="attr-contains-div6" lang="en-US"></div>
+
+    <p id="attr-contains-p1" class=" apple banana orange "></p>
+  </div>
+
+  <div id="pseudo-nth">
+    <table id="pseudo-nth-table1">
+      <tr id="pseudo-nth-tr1"><td id="pseudo-nth-td1"></td><td id="pseudo-nth-td2"></td><td id="pseudo-nth-td3"></td><td id="pseudo-nth-td4"></td><td id="pseudo-nth--td5"></td><td id="pseudo-nth-td6"></td></tr>
+      <tr id="pseudo-nth-tr2"><td id="pseudo-nth-td7"></td><td id="pseudo-nth-td8"></td><td id="pseudo-nth-td9"></td><td id="pseudo-nth-td10"></td><td id="pseudo-nth-td11"></td><td id="pseudo-nth-td12"></td></tr>
+      <tr id="pseudo-nth-tr3"><td id="pseudo-nth-td13"></td><td id="pseudo-nth-td14"></td><td id="pseudo-nth-td15"></td><td id="pseudo-nth-td16"></td><td id="pseudo-nth-td17"></td><td id="pseudo-nth-td18"></td></tr>
+    </table>
+
+    <ol id="pseudo-nth-ol1">
+      <li id="pseudo-nth-li1"></li>
+      <li id="pseudo-nth-li2"></li>
+      <li id="pseudo-nth-li3"></li>
+      <li id="pseudo-nth-li4"></li>
+      <li id="pseudo-nth-li5"></li>
+      <li id="pseudo-nth-li6"></li>
+      <li id="pseudo-nth-li7"></li>
+      <li id="pseudo-nth-li8"></li>
+      <li id="pseudo-nth-li9"></li>
+      <li id="pseudo-nth-li10"></li>
+      <li id="pseudo-nth-li11"></li>
+      <li id="pseudo-nth-li12"></li>
+    </ol>
+
+    <p id="pseudo-nth-p1">
+      <span id="pseudo-nth-span1">span1</span>
+      <em id="pseudo-nth-em1">em1</em>
+      <!-- comment node-->
+      <em id="pseudo-nth-em2">em2</em>
+      <span id="pseudo-nth-span2">span2</span>
+      <strong id="pseudo-nth-strong1">strong1</strong>
+      <em id="pseudo-nth-em3">em3</em>
+      <span id="pseudo-nth-span3">span3</span>
+      <span id="pseudo-nth-span4">span4</span>
+      <strong id="pseudo-nth-strong2">strong2</strong>
+      <em id="pseudo-nth-em4">em4</em>
+    </p>
+  </div>
+
+  <div id="pseudo-first-child">
+    <div id="pseudo-first-child-div1"></div>
+    <div id="pseudo-first-child-div2"></div>
+    <div id="pseudo-first-child-div3"></div>
+
+    <p id="pseudo-first-child-p1"><span id="pseudo-first-child-span1"></span><span id="pseudo-first-child-span2"></span></p>
+    <p id="pseudo-first-child-p2"><span id="pseudo-first-child-span3"></span><span id="pseudo-first-child-span4"></span></p>
+    <p id="pseudo-first-child-p3"><span id="pseudo-first-child-span5"></span><span id="pseudo-first-child-span6"></span></p>
+  </div>
+
+  <div id="pseudo-last-child">
+    <p id="pseudo-last-child-p1"><span id="pseudo-last-child-span1"></span><span id="pseudo-last-child-span2"></span></p>
+    <p id="pseudo-last-child-p2"><span id="pseudo-last-child-span3"></span><span id="pseudo-last-child-span4"></span></p>
+    <p id="pseudo-last-child-p3"><span id="pseudo-last-child-span5"></span><span id="pseudo-last-child-span6"></span></p>
+
+    <div id="pseudo-last-child-div1"></div>
+    <div id="pseudo-last-child-div2"></div>
+    <div id="pseudo-last-child-div3"></div>
+  </div>
+
+  <div id="pseudo-only">
+    <p id="pseudo-only-p1">
+      <span id="pseudo-only-span1"></span>
+    </p>
+    <p id="pseudo-only-p2">
+      <span id="pseudo-only-span2"></span>
+      <span id="pseudo-only-span3"></span>
+    </p>
+    <p id="pseudo-only-p3">
+      <span id="pseudo-only-span4"></span>
+      <em id="pseudo-only-em1"></em>
+      <span id="pseudo-only-span5"></span>
+    </p>
+  </div>>
+
+  <div id="pseudo-empty">
+    <p id="pseudo-empty-p1"></p>
+    <p id="pseudo-empty-p2"><!-- comment node --></p>
+    <p id="pseudo-empty-p3"> </p>
+    <p id="pseudo-empty-p4">Text node</p>
+    <p id="pseudo-empty-p5"><span id="pseudo-empty-span1"></span></p>
+  </div>
+
+  <div id="pseudo-link">
+    <a id="pseudo-link-a1" href="">with href</a>
+    <a id="pseudo-link-a2" href="http://example.org/">with href</a>
+    <a id="pseudo-link-a3">without href</a>
+    <map name="pseudo-link-map1" id="pseudo-link-map1">
+      <area id="pseudo-link-area1" href=""/>
+      <area id="pseudo-link-area2"/>
+    </map>
+  </div>
+
+  <div id="pseudo-lang">
+    <div id="pseudo-lang-div1"></div>
+      <div id="pseudo-lang-div2" lang="fr"></div>
+      <div id="pseudo-lang-div3" lang="en-AU"></div>
+      <div id="pseudo-lang-div4" lang="es"></div>
+  </div>
+
+  <div id="pseudo-ui">
+    <input id="pseudo-ui-input1" type="text"/>
+    <input id="pseudo-ui-input2" type="password"/>
+    <input id="pseudo-ui-input3" type="radio"/>
+    <input id="pseudo-ui-input4" type="radio" checked="checked"/>
+    <input id="pseudo-ui-input5" type="checkbox"/>
+    <input id="pseudo-ui-input6" type="checkbox" checked="checked"/>
+    <input id="pseudo-ui-input7" type="submit"/>
+    <input id="pseudo-ui-input8" type="button"/>
+    <input id="pseudo-ui-input9" type="hidden"/>
+    <textarea id="pseudo-ui-textarea1"></textarea>
+    <button id="pseudo-ui-button1">Enabled</button>
+
+    <input id="pseudo-ui-input10" disabled="disabled" type="text"/>
+    <input id="pseudo-ui-input11" disabled="disabled" type="password"/>
+    <input id="pseudo-ui-input12" disabled="disabled" type="radio"/>
+    <input id="pseudo-ui-input13" disabled="disabled" type="radio" checked="checked"/>
+    <input id="pseudo-ui-input14" disabled="disabled" type="checkbox"/>
+    <input id="pseudo-ui-input15" disabled="disabled" type="checkbox" checked="checked"/>
+    <input id="pseudo-ui-input16" disabled="disabled" type="submit"/>
+    <input id="pseudo-ui-input17" disabled="disabled" type="button"/>
+    <input id="pseudo-ui-input18" disabled="disabled" type="hidden"/>
+    <textarea id="pseudo-ui-textarea2" disabled="disabled"></textarea>
+    <button id="pseudo-ui-button2" disabled="disabled">Disabled</button>
+  </div>
+
+  <div id="not">
+    <div id="not-div1"></div>
+    <div id="not-div2"></div>
+    <div id="not-div3"></div>
+
+    <p id="not-p1"><span id="not-span1"></span><em id="not-em1"></em></p>
+    <p id="not-p2"><span id="not-span2"></span><em id="not-em2"></em></p>
+    <p id="not-p3"><span id="not-span3"></span><em id="not-em3"></em></p>
+  </div>
+
+  <div id="pseudo-element">All pseudo-element tests</div>
+
+  <div id="class">
+    <p id="class-p1" class="foo class-p bar"></p>
+    <p id="class-p2" class="class-p foo bar"></p>
+    <p id="class-p3" class="foo bar class-p"></p>
+
+    <!-- All permutations of the classes should match -->
+    <div id="class-div1" class="apple orange banana"></div>
+    <div id="class-div2" class="apple banana orange"></div>
+    <p id="class-p4" class="orange apple banana"></p>
+    <div id="class-div3" class="orange banana apple"></div>
+    <p id="class-p6" class="banana apple orange"></p>
+    <div id="class-div4" class="banana orange apple"></div>
+    <div id="class-div5" class="apple orange"></div>
+    <div id="class-div6" class="apple banana"></div>
+    <div id="class-div7" class="orange banana"></div>
+
+    <span id="class-span1" class="台北Táiběi 台北"></span>
+    <span id="class-span2" class="台北"></span>
+
+    <span id="class-span3" class="foo:bar"></span>
+    <span id="class-span4" class="test.foo[5]bar"></span>
+  </div>
+
+  <div id="id">
+    <div id="id-div1"></div>
+    <div id="id-div2"></div>
+
+    <ul id="id-ul1">
+      <li id="id-li-duplicate"></li>
+      <li id="id-li-duplicate"></li>
+      <li id="id-li-duplicate"></li>
+      <li id="id-li-duplicate"></li>
+    </ul>
+
+    <span id="台北Táiběi"></span>
+    <span id="台北"></span>
+
+    <span id="#foo:bar"></span>
+    <span id="test.foo[5]bar"></span>
+  </div>
+
+  <div id="descendant">
+    <div id="descendant-div1" class="descendant-div1">
+      <div id="descendant-div2" class="descendant-div2">
+        <div id="descendant-div3" class="descendant-div3">
+        </div>
+      </div>
+    </div>
+    <div id="descendant-div4" class="descendant-div4"></div>
+  </div>
+
+  <div id="child">
+    <div id="child-div1" class="child-div1">
+      <div id="child-div2" class="child-div2">
+        <div id="child-div3" class="child-div3">
+        </div>
+      </div>
+    </div>
+    <div id="child-div4" class="child-div4"></div>
+  </div>
+
+  <div id="adjacent">
+    <div id="adjacent-div1" class="adjacent-div1"></div>
+    <div id="adjacent-div2" class="adjacent-div2">
+      <div id="adjacent-div3" class="adjacent-div3"></div>
+    </div>
+    <div id="adjacent-div4" class="adjacent-div4">
+      <p id="adjacent-p1" class="adjacent-p1"></p>
+      <div id="adjacent-div5" class="adjacent-div5"></div>
+    </div>
+    <div id="adjacent-div6" class="adjacent-div6"></div>
+    <p id="adjacent-p2" class="adjacent-p2"></p>
+    <p id="adjacent-p3" class="adjacent-p3"></p>
+  </div>
+
+  <div id="sibling">
+    <div id="sibling-div1" class="sibling-div"></div>
+    <div id="sibling-div2" class="sibling-div">
+      <div id="sibling-div3" class="sibling-div"></div>
+    </div>
+    <div id="sibling-div4" class="sibling-div">
+      <p id="sibling-p1" class="sibling-p"></p>
+      <div id="sibling-div5" class="sibling-div"></div>
+    </div>
+    <div id="sibling-div6" class="sibling-div"></div>
+    <p id="sibling-p2" class="sibling-p"></p>
+    <p id="sibling-p3" class="sibling-p"></p>
+  </div>
+
+  <div id="group">
+    <em id="group-em1"></em>
+    <strong id="group-strong1"></strong>
+  </div>
+</div>
+</body>
+</html>
diff --git a/tests/wpt/dom/nodes/ParentNode-querySelector-All-xht.xht b/tests/wpt/dom/nodes/ParentNode-querySelector-All-xht.xht
new file mode 100644
index 00000000..f2d94da1
--- /dev/null
+++ b/tests/wpt/dom/nodes/ParentNode-querySelector-All-xht.xht
@@ -0,0 +1,124 @@
+<!DOCTYPE html>
+<html id="html" lang="en" xmlns="http://www.w3.org/1999/xhtml">
+<head id="head">
+<meta name="timeout" content="long" />
+<title>Selectors-API Test Suite: XHTML</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="selectors.js"></script>
+<script src="ParentNode-querySelector-All.js"></script>
+<style>iframe { visibility: hidden; position: absolute; }</style>
+</head>
+<body>
+<div id="log">This test requires JavaScript.</div>
+
+<script><![CDATA[
+async_test(function() {
+  var frame = document.createElement("iframe");
+  var self = this;
+  frame.onload = function() {
+    // :target doesn't work before a page rendering on some browsers.  We run
+    // tests after an animation frame because it may be later than the first
+    // page rendering.
+    requestAnimationFrame(self.step_func_done(init.bind(self, frame)));
+  };
+  frame.src = "ParentNode-querySelector-All-content.xht#target";
+  document.body.appendChild(frame);
+})
+
+function init(target) {
+  /*
+   * This test suite tests Selectors API methods in 4 different contexts:
+   * 1. Document node
+   * 2. In-document Element node
+   * 3. Detached Element node (an element with no parent, not in the document)
+   * 4. Document Fragment node
+   *
+   * For each context, the following tests are run:
+   *
+   * The interface check tests ensure that each type of node exposes the Selectors API methods
+   *
+   * The special selector tests verify the result of passing special values for the selector parameter,
+   * to ensure that the correct WebIDL processing is performed, such as stringification of null and
+   * undefined and missing parameter. The universal selector is also tested here, rather than with the
+   * rest of ordinary selectors for practical reasons.
+   *
+   * The static list verification tests ensure that the node lists returned by the method remain unchanged
+   * due to subsequent document modication, and that a new list is generated each time the method is
+   * invoked based on the current state of the document.
+   *
+   * The invalid selector tests ensure that SyntaxError is thrown for invalid forms of selectors
+   *
+   * The valid selector tests check the result from querying many different types of selectors, with a
+   * list of expected elements. This checks that querySelector() always returns the first result from
+   * querySelectorAll(), and that all matching elements are correctly returned in tree-order. The tests
+   * can be limited by specifying the test types to run, using the testType variable. The constants for this
+   * can be found in selectors.js.
+   *
+   * All the selectors tested for both the valid and invalid selector tests are found in selectors.js.
+   * See comments in that file for documentation of the format used.
+   *
+   * The ParentNode-querySelector-All.js file contains all the common test functions for running each of the aforementioned tests
+   */
+
+  var testType = TEST_QSA;
+  var docType  = "xhtml"; // Only run tests suitable for XHTML
+
+  // Prepare the nodes for testing
+  var doc = target.contentDocument;                 // Document Node tests
+
+  var element = doc.getElementById("root");   // In-document Element Node tests
+
+  //Setup the namespace tests
+  setupSpecialElements(doc, element);
+
+  var outOfScope = element.cloneNode(true);   // Append this to the body before running the in-document
+                                               // Element tests, but after running the Document tests. This
+                                               // tests that no elements that are not descendants of element
+                                               // are selected.
+
+  traverse(outOfScope, function(elem) {        // Annotate each element as being a clone; used for verifying
+    elem.setAttribute("data-clone", "");     // that none of these elements ever match.
+  });
+
+
+  var detached = element.cloneNode(true);     // Detached Element Node tests
+
+  var fragment = doc.createDocumentFragment(); // Fragment Node tests
+  fragment.appendChild(element.cloneNode(true));
+
+  var empty = document.createElement("div"); // Empty Node tests
+
+  // Setup Tests
+  interfaceCheck("Document", doc);
+  interfaceCheck("Detached Element", detached);
+  interfaceCheck("Fragment", fragment);
+  interfaceCheck("In-document Element", element);
+
+  runSpecialSelectorTests("Document", doc);
+  runSpecialSelectorTests("Detached Element", detached);
+  runSpecialSelectorTests("Fragment", fragment);
+  runSpecialSelectorTests("In-document Element", element);
+
+  verifyStaticList("Document", doc, doc);
+  verifyStaticList("Detached Element", doc, detached);
+  verifyStaticList("Fragment", doc, fragment);
+  verifyStaticList("In-document Element", doc, element);
+
+  runInvalidSelectorTest("Document", doc, invalidSelectors);
+  runInvalidSelectorTest("Detached Element", detached, invalidSelectors);
+  runInvalidSelectorTest("Fragment", fragment, invalidSelectors);
+  runInvalidSelectorTest("In-document Element", element, invalidSelectors);
+  runInvalidSelectorTest("Empty Element", empty, invalidSelectors);
+
+  runValidSelectorTest("Document", doc, validSelectors, testType, docType);
+  runValidSelectorTest("Detached Element", detached, validSelectors, testType, docType);
+  runValidSelectorTest("Fragment", fragment, validSelectors, testType, docType);
+
+  doc.body.appendChild(outOfScope); // Append before in-document Element tests.
+                                    // None of these elements should match
+  runValidSelectorTest("In-document Element", element, validSelectors, testType, docType);
+}
+]]></script>
+</body>
+</html>
diff --git a/tests/wpt/dom/nodes/ParentNode-querySelector-All.html b/tests/wpt/dom/nodes/ParentNode-querySelector-All.html
new file mode 100644
index 00000000..7d68e7f2
--- /dev/null
+++ b/tests/wpt/dom/nodes/ParentNode-querySelector-All.html
@@ -0,0 +1,120 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<meta name=timeout content=long>
+<title>Selectors-API Test Suite: HTML</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="selectors.js"></script>
+<script src="ParentNode-querySelector-All.js"></script>
+<style>iframe { visibility: hidden; position: absolute; }</style>
+
+<div id="log">This test requires JavaScript.</div>
+
+<script>
+async_test(function() {
+  var frame = document.createElement("iframe");
+  var self = this;
+  frame.onload = function() {
+    // :target doesn't work before a page rendering on some browsers.  We run
+    // tests after an animation frame because it may be later than the first
+    // page rendering.
+    requestAnimationFrame(self.step_func_done(init.bind(self, frame)));
+  };
+  frame.src = "ParentNode-querySelector-All-content.html#target";
+  document.body.appendChild(frame);
+});
+
+function init(target) {
+  /*
+   * This test suite tests Selectors API methods in 4 different contexts:
+   * 1. Document node
+   * 2. In-document Element node
+   * 3. Detached Element node (an element with no parent, not in the document)
+   * 4. Document Fragment node
+   *
+   * For each context, the following tests are run:
+   *
+   * The interface check tests ensure that each type of node exposes the Selectors API methods
+   *
+   * The special selector tests verify the result of passing special values for the selector parameter,
+   * to ensure that the correct WebIDL processing is performed, such as stringification of null and
+   * undefined and missing parameter. The universal selector is also tested here, rather than with the
+   * rest of ordinary selectors for practical reasons.
+   *
+   * The static list verification tests ensure that the node lists returned by the method remain unchanged
+   * due to subsequent document modication, and that a new list is generated each time the method is
+   * invoked based on the current state of the document.
+   *
+   * The invalid selector tests ensure that SyntaxError is thrown for invalid forms of selectors
+   *
+   * The valid selector tests check the result from querying many different types of selectors, with a
+   * list of expected elements. This checks that querySelector() always returns the first result from
+   * querySelectorAll(), and that all matching elements are correctly returned in tree-order. The tests
+   * can be limited by specifying the test types to run, using the testType variable. The constants for this
+   * can be found in selectors.js.
+   *
+   * All the selectors tested for both the valid and invalid selector tests are found in selectors.js.
+   * See comments in that file for documentation of the format used.
+   *
+   * The ParentNode-querySelector-All.js file contains all the common test functions for running each of the aforementioned tests
+   */
+
+  var testType = TEST_QSA;
+  var docType  = "html"; // Only run tests suitable for HTML
+
+  // Prepare the nodes for testing
+  var doc = target.contentDocument;                 // Document Node tests
+
+  var element = doc.getElementById("root");   // In-document Element Node tests
+
+  //Setup the namespace tests
+  setupSpecialElements(doc, element);
+
+  var outOfScope = element.cloneNode(true);   // Append this to the body before running the in-document
+                                               // Element tests, but after running the Document tests. This
+                                               // tests that no elements that are not descendants of element
+                                               // are selected.
+
+  traverse(outOfScope, function(elem) {        // Annotate each element as being a clone; used for verifying
+    elem.setAttribute("data-clone", "");     // that none of these elements ever match.
+  });
+
+
+  var detached = element.cloneNode(true);     // Detached Element Node tests
+
+  var fragment = doc.createDocumentFragment(); // Fragment Node tests
+  fragment.appendChild(element.cloneNode(true));
+
+  var empty = document.createElement("div"); // Empty Node tests
+
+  // Setup Tests
+  interfaceCheck("Document", doc);
+  interfaceCheck("Detached Element", detached);
+  interfaceCheck("Fragment", fragment);
+  interfaceCheck("In-document Element", element);
+
+  runSpecialSelectorTests("Document", doc);
+  runSpecialSelectorTests("Detached Element", detached);
+  runSpecialSelectorTests("Fragment", fragment);
+  runSpecialSelectorTests("In-document Element", element);
+
+  verifyStaticList("Document", doc, doc);
+  verifyStaticList("Detached Element", doc, detached);
+  verifyStaticList("Fragment", doc, fragment);
+  verifyStaticList("In-document Element", doc, element);
+
+  runInvalidSelectorTest("Document", doc, invalidSelectors);
+  runInvalidSelectorTest("Detached Element", detached, invalidSelectors);
+  runInvalidSelectorTest("Fragment", fragment, invalidSelectors);
+  runInvalidSelectorTest("In-document Element", element, invalidSelectors);
+  runInvalidSelectorTest("Empty Element", empty, invalidSelectors);
+
+  runValidSelectorTest("Document", doc, validSelectors, testType, docType);
+  runValidSelectorTest("Detached Element", detached, validSelectors, testType, docType);
+  runValidSelectorTest("Fragment", fragment, validSelectors, testType, docType);
+
+  doc.body.appendChild(outOfScope); // Append before in-document Element tests.
+                                    // None of these elements should match
+  runValidSelectorTest("In-document Element", element, validSelectors, testType, docType);
+}
+</script>
diff --git a/tests/wpt/dom/nodes/ParentNode-querySelector-All.js b/tests/wpt/dom/nodes/ParentNode-querySelector-All.js
new file mode 100644
index 00000000..3c6c5031
--- /dev/null
+++ b/tests/wpt/dom/nodes/ParentNode-querySelector-All.js
@@ -0,0 +1,261 @@
+// Require selectors.js to be included before this.
+
+/*
+ * Create and append special elements that cannot be created correctly with HTML markup alone.
+ */
+function setupSpecialElements(doc, parent) {
+  // Setup null and undefined tests
+  parent.appendChild(doc.createElement("null"));
+  parent.appendChild(doc.createElement("undefined"));
+
+  // Setup namespace tests
+  var anyNS = doc.createElement("div");
+  var noNS = doc.createElement("div");
+  anyNS.id = "any-namespace";
+  noNS.id = "no-namespace";
+
+  var divs;
+  div = [doc.createElement("div"),
+         doc.createElementNS("http://www.w3.org/1999/xhtml", "div"),
+         doc.createElementNS("", "div"),
+         doc.createElementNS("http://www.example.org/ns", "div")];
+
+  div[0].id = "any-namespace-div1";
+  div[1].id = "any-namespace-div2";
+  div[2].setAttribute("id", "any-namespace-div3"); // Non-HTML elements can't use .id property
+  div[3].setAttribute("id", "any-namespace-div4");
+
+  for (var i = 0; i < div.length; i++) {
+    anyNS.appendChild(div[i])
+  }
+
+  div = [doc.createElement("div"),
+         doc.createElementNS("http://www.w3.org/1999/xhtml", "div"),
+         doc.createElementNS("", "div"),
+         doc.createElementNS("http://www.example.org/ns", "div")];
+
+  div[0].id = "no-namespace-div1";
+  div[1].id = "no-namespace-div2";
+  div[2].setAttribute("id", "no-namespace-div3"); // Non-HTML elements can't use .id property
+  div[3].setAttribute("id", "no-namespace-div4");
+
+  for (i = 0; i < div.length; i++) {
+    noNS.appendChild(div[i])
+  }
+
+  parent.appendChild(anyNS);
+  parent.appendChild(noNS);
+
+  var span = doc.getElementById("attr-presence-i1");
+  span.setAttributeNS("http://www.example.org/ns", "title", "");
+}
+
+/*
+ * Check that the querySelector and querySelectorAll methods exist on the given Node
+ */
+function interfaceCheck(type, obj) {
+  test(function() {
+    var q = typeof obj.querySelector === "function";
+    assert_true(q, type + " supports querySelector.");
+  }, type + " supports querySelector")
+
+  test(function() {
+    var qa = typeof obj.querySelectorAll === "function";
+    assert_true( qa, type + " supports querySelectorAll.");
+  }, type + " supports querySelectorAll")
+
+  test(function() {
+    var list = obj.querySelectorAll("div");
+    if (obj.ownerDocument) { // The object is not a Document
+      assert_true(list instanceof obj.ownerDocument.defaultView.NodeList, "The result should be an instance of a NodeList")
+    } else { // The object is a Document
+      assert_true(list instanceof obj.defaultView.NodeList, "The result should be an instance of a NodeList")
+    }
+  }, type + ".querySelectorAll returns NodeList instance")
+}
+
+/*
+ * Verify that the NodeList returned by querySelectorAll is static and and that a new list is created after
+ * each call. A static list should not be affected by subsequent changes to the DOM.
+ */
+function verifyStaticList(type, doc, root) {
+  var pre, post, preLength;
+
+  test(function() {
+    pre = root.querySelectorAll("div");
+    preLength = pre.length;
+
+    var div = doc.createElement("div");
+    (root.body || root).appendChild(div);
+
+    assert_equals(pre.length, preLength, "The length of the NodeList should not change.")
+  }, type + ": static NodeList")
+
+  test(function() {
+    post = root.querySelectorAll("div"),
+    assert_equals(post.length, preLength + 1, "The length of the new NodeList should be 1 more than the previous list.")
+  }, type + ": new NodeList")
+}
+
+/*
+ * Verify handling of special values for the selector parameter, including stringification of
+ * null and undefined, and the handling of the empty string.
+ */
+function runSpecialSelectorTests(type, root) {
+  let global = (root.ownerDocument || root).defaultView;
+
+  test(function() { // 1
+    assert_equals(root.querySelectorAll(null).length, 1, "This should find one element with the tag name 'NULL'.");
+  }, type + ".querySelectorAll null")
+
+  test(function() { // 2
+    assert_equals(root.querySelectorAll(undefined).length, 1, "This should find one element with the tag name 'UNDEFINED'.");
+  }, type + ".querySelectorAll undefined")
+
+  test(function() { // 3
+    assert_throws_js(global.TypeError, function() {
+      root.querySelectorAll();
+    }, "This should throw a TypeError.")
+  }, type + ".querySelectorAll no parameter")
+
+  test(function() { // 4
+    var elm = root.querySelector(null)
+    assert_not_equals(elm, null, "This should find an element.");
+    assert_equals(elm.tagName.toUpperCase(), "NULL", "The tag name should be 'NULL'.")
+  }, type + ".querySelector null")
+
+  test(function() { // 5
+    var elm = root.querySelector(undefined)
+    assert_not_equals(elm, undefined, "This should find an element.");
+    assert_equals(elm.tagName.toUpperCase(), "UNDEFINED", "The tag name should be 'UNDEFINED'.")
+  }, type + ".querySelector undefined")
+
+  test(function() { // 6
+    assert_throws_js(global.TypeError, function() {
+      root.querySelector();
+    }, "This should throw a TypeError.")
+  }, type + ".querySelector no parameter")
+
+  test(function() { // 7
+    result = root.querySelectorAll("*");
+    var i = 0;
+    traverse(root, function(elem) {
+      if (elem !== root) {
+        assert_equals(elem, result[i], "The result in index " + i + " should be in tree order.");
+        i++;
+      }
+    })
+  }, type + ".querySelectorAll tree order");
+}
+
+/*
+ * Execute queries with the specified valid selectors for both querySelector() and querySelectorAll()
+ * Only run these tests when results are expected. Don't run for syntax error tests.
+ */
+function runValidSelectorTest(type, root, selectors, testType, docType) {
+  var nodeType = "";
+  switch (root.nodeType) {
+    case Node.DOCUMENT_NODE:
+      nodeType = "document";
+      break;
+    case Node.ELEMENT_NODE:
+      nodeType = root.parentNode ? "element" : "detached";
+      break;
+    case Node.DOCUMENT_FRAGMENT_NODE:
+      nodeType = "fragment";
+      break;
+    default:
+      assert_unreached();
+      nodeType = "unknown"; // This should never happen.
+  }
+
+  for (var i = 0; i < selectors.length; i++) {
+    var s = selectors[i];
+    var n = s["name"];
+    var q = s["selector"];
+    var e = s["expect"];
+
+    if ((!s["exclude"] || (s["exclude"].indexOf(nodeType) === -1 && s["exclude"].indexOf(docType) === -1))
+     && (s["testType"] & testType) ) {
+      var foundall, found;
+
+      test(function() {
+        foundall = root.querySelectorAll(q);
+        assert_not_equals(foundall, null, "The method should not return null.")
+        assert_equals(foundall.length, e.length, "The method should return the expected number of matches.")
+
+        for (var i = 0; i < e.length; i++) {
+          assert_not_equals(foundall[i], null, "The item in index " + i + " should not be null.")
+          assert_equals(foundall[i].getAttribute("id"), e[i], "The item in index " + i + " should have the expected ID.");
+          assert_false(foundall[i].hasAttribute("data-clone"), "This should not be a cloned element.");
+        }
+      }, type + ".querySelectorAll: " + n + ": " + q);
+
+      test(function() {
+        found = root.querySelector(q);
+
+        if (e.length > 0) {
+          assert_not_equals(found, null, "The method should return a match.")
+          assert_equals(found.getAttribute("id"), e[0], "The method should return the first match.");
+          assert_equals(found, foundall[0], "The result should match the first item from querySelectorAll.");
+          assert_false(found.hasAttribute("data-clone"), "This should not be annotated as a cloned element.");
+        } else {
+          assert_equals(found, null, "The method should not match anything.");
+        }
+      }, type + ".querySelector: " + n + ": " + q);
+    }
+  }
+}
+
+function windowFor(root) {
+  return root.defaultView || root.ownerDocument.defaultView;
+}
+
+/*
+ * Execute queries with the specified invalid selectors for both querySelector() and querySelectorAll()
+ * Only run these tests when errors are expected. Don't run for valid selector tests.
+ */
+function runInvalidSelectorTest(type, root, selectors) {
+  for (var i = 0; i < selectors.length; i++) {
+    var s = selectors[i];
+    var n = s["name"];
+    var q = s["selector"];
+
+    test(function() {
+      assert_throws_dom("SyntaxError", windowFor(root).DOMException, function() {
+        root.querySelector(q)
+      });
+    }, type + ".querySelector: " + n + ": " + q);
+
+    test(function() {
+      assert_throws_dom("SyntaxError", windowFor(root).DOMException, function() {
+        root.querySelectorAll(q)
+      });
+    }, type + ".querySelectorAll: " + n + ": " + q);
+  }
+}
+
+function traverse(elem, fn) {
+  if (elem.nodeType === elem.ELEMENT_NODE) {
+    fn(elem);
+  }
+  elem = elem.firstChild;
+  while (elem) {
+    traverse(elem, fn);
+    elem = elem.nextSibling;
+  }
+}
+
+function getNodeType(node) {
+  switch (node.nodeType) {
+    case Node.DOCUMENT_NODE:
+      return "document";
+    case Node.ELEMENT_NODE:
+      return node.parentNode ? "element" : "detached";
+    case Node.DOCUMENT_FRAGMENT_NODE:
+      return "fragment";
+    default:
+      assert_unreached();
+      return "unknown"; // This should never happen.
+  }
+}
diff --git a/tests/wpt/dom/nodes/ParentNode-querySelector-case-insensitive.html b/tests/wpt/dom/nodes/ParentNode-querySelector-case-insensitive.html
new file mode 100644
index 00000000..e461ee50
--- /dev/null
+++ b/tests/wpt/dom/nodes/ParentNode-querySelector-case-insensitive.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>querySelector(All) must work with the i and *= selectors</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<!-- Regression test for https://github.com/jsdom/jsdom/issues/2551 -->
+
+<input name="User" id="testInput"></input>
+
+<script>
+"use strict";
+const input = document.getElementById("testInput");
+
+test(() => {
+  assert_equals(document.querySelector("input[name*=user i]"), input);
+}, "querySelector");
+
+test(() => {
+  assert_array_equals(document.querySelectorAll("input[name*=user i]"), [input]);
+}, "querySelectorAll");
+</script>
diff --git a/tests/wpt/dom/nodes/ParentNode-querySelector-escapes.html b/tests/wpt/dom/nodes/ParentNode-querySelector-escapes.html
new file mode 100644
index 00000000..65a75e5c
--- /dev/null
+++ b/tests/wpt/dom/nodes/ParentNode-querySelector-escapes.html
@@ -0,0 +1,123 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>querySelector() with CSS escapes</title>
+<link rel="help" href="https://dom.spec.whatwg.org/#dom-parentnode-queryselector">
+<link rel="help" href="https://drafts.csswg.org/css-syntax/#consume-escaped-code-point">
+<link rel="author" title="Domenic Denicola" href="mailto:d@domenic.me">
+<link rel="author" title="bellbind" href="mailto:bellbind@gmail.com">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<script>
+"use strict";
+
+function testMatched(id, selector) {
+  test(() => {
+    const container = document.createElement("div");
+    const child = document.createElement("span");
+    child.id = id;
+
+    container.appendChild(child);
+
+    assert_equals(container.querySelector(selector), child);
+  }, `${JSON.stringify(id)} should match with ${JSON.stringify(selector)}`);
+}
+
+function testNeverMatched(id, selector) {
+  test(() => {
+    const container = document.createElement("div");
+    const child = document.createElement("span");
+    child.id = id;
+
+    container.appendChild(child);
+
+    assert_equals(container.querySelector(selector), null);
+  }, `${JSON.stringify(id)} should never match with ${JSON.stringify(selector)}`);
+}
+
+// 4.3.7 from https://drafts.csswg.org/css-syntax/#consume-escaped-code-point
+testMatched("nonescaped", "#nonescaped");
+
+// - escape hex digit
+testMatched("0nextIsWhiteSpace", "#\\30 nextIsWhiteSpace");
+testMatched("0nextIsNotHexLetters", "#\\30nextIsNotHexLetters");
+testMatched("0connectHexMoreThan6Hex", "#\\000030connectHexMoreThan6Hex");
+testMatched("0spaceMoreThan6Hex", "#\\000030 spaceMoreThan6Hex");
+
+// - hex digit special replacement
+// 1. zero points
+testMatched("zero\u{fffd}", "#zero\\0");
+testNeverMatched("zero\u{0}", "#zero\\0");
+testMatched("zero\u{fffd}", "#zero\\000000");
+testNeverMatched("zero\u{0}", "#zero\\000000");
+// 2. surrogate points
+testMatched("\u{fffd}surrogateFirst", "#\\d83d surrogateFirst");
+testNeverMatched("\ud83dsurrogateFirst", "#\\d83d surrogateFirst");
+testMatched("surrogateSecond\u{fffd}", "#surrogateSecond\\dd11");
+testNeverMatched("surrogateSecond\udd11", "#surrogateSecond\\dd11");
+testMatched("surrogatePair\u{fffd}\u{fffd}", "#surrogatePair\\d83d\\dd11");
+testNeverMatched("surrogatePair\u{1f511}", "#surrogatePair\\d83d\\dd11");
+// 3. out of range points
+testMatched("outOfRange\u{fffd}", "#outOfRange\\110000");
+testMatched("outOfRange\u{fffd}", "#outOfRange\\110030");
+testNeverMatched("outOfRange\u{30}", "#outOfRange\\110030");
+testMatched("outOfRange\u{fffd}", "#outOfRange\\555555");
+testMatched("outOfRange\u{fffd}", "#outOfRange\\ffffff");
+
+// - escape EOF
+testNeverMatched("eof\\", "#eof\\");
+
+// - escape anythong else
+testMatched(".comma", "#\\.comma");
+testMatched("-minus", "#\\-minus");
+testMatched("g", "#\\g");
+
+// non edge cases
+testMatched("aBMPRegular", "#\\61 BMPRegular");
+testMatched("\u{1f511}nonBMP", "#\\1f511 nonBMP");
+testMatched("00continueEscapes", "#\\30\\30 continueEscapes");
+testMatched("00continueEscapes", "#\\30 \\30 continueEscapes");
+testMatched("continueEscapes00", "#continueEscapes\\30 \\30 ");
+testMatched("continueEscapes00", "#continueEscapes\\30 \\30");
+testMatched("continueEscapes00", "#continueEscapes\\30\\30 ");
+testMatched("continueEscapes00", "#continueEscapes\\30\\30");
+
+// ident tests case from CSS tests of chromium source: https://goo.gl/3Cxdov
+testMatched("hello", "#hel\\6Co");
+testMatched("&B", "#\\26 B");
+testMatched("hello", "#hel\\6C o");
+testMatched("spaces", "#spac\\65\r\ns");
+testMatched("spaces", "#sp\\61\tc\\65\fs");
+testMatched("test\u{D799}", "#test\\D799");
+testMatched("\u{E000}", "#\\E000");
+testMatched("test", "#te\\s\\t");
+testMatched("spaces in\tident", "#spaces\\ in\\\tident");
+testMatched(".,:!", "#\\.\\,\\:\\!");
+testMatched("null\u{fffd}", "#null\\0");
+testMatched("null\u{fffd}", "#null\\0000");
+testMatched("large\u{fffd}", "#large\\110000");
+testMatched("large\u{fffd}", "#large\\23456a");
+testMatched("surrogate\u{fffd}", "#surrogate\\D800");
+testMatched("surrogate\u{fffd}", "#surrogate\\0DBAC");
+testMatched("\u{fffd}surrogate", "#\\00DFFFsurrogate");
+testMatched("\u{10ffff}", "#\\10fFfF");
+testMatched("\u{10ffff}0", "#\\10fFfF0");
+testMatched("\u{100000}00", "#\\10000000");
+testMatched("eof\u{fffd}", "#eof\\");
+
+testMatched("simple-ident", "#simple-ident");
+testMatched("testing123", "#testing123");
+testMatched("_underscore", "#_underscore");
+testMatched("-text", "#-text");
+testMatched("-m", "#-\\6d");
+testMatched("--abc", "#--abc");
+testMatched("--", "#--");
+testMatched("--11", "#--11");
+testMatched("---", "#---");
+testMatched("\u{2003}", "#\u{2003}");
+testMatched("\u{A0}", "#\u{A0}");
+testMatched("\u{1234}", "#\u{1234}");
+testMatched("\u{12345}", "#\u{12345}");
+testMatched("\u{fffd}", "#\u{0}");
+testMatched("ab\u{fffd}c", "#ab\u{0}c");
+</script>
diff --git a/tests/wpt/dom/nodes/ParentNode-querySelector-scope.html b/tests/wpt/dom/nodes/ParentNode-querySelector-scope.html
new file mode 100644
index 00000000..d984956d
--- /dev/null
+++ b/tests/wpt/dom/nodes/ParentNode-querySelector-scope.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>querySelector(All) scoped to a root element</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<div><h1 id="test"></h1><p><span>hello</span></p></div>
+
+<script>
+"use strict";
+const div = document.querySelector("div");
+const p = document.querySelector("p");
+
+test(() => {
+  assert_equals(div.querySelector(":scope > p"), p);
+  assert_equals(div.querySelector(":scope > span"), null);
+}, "querySelector with :scope");
+
+test(() => {
+  assert_equals(div.querySelector("#test + p"), p);
+  assert_equals(p.querySelector("#test + p"), null);
+}, "querySelector with id and sibling");
+
+test(() => {
+  assert_array_equals(div.querySelectorAll(":scope > p"), [p]);
+  assert_array_equals(div.querySelectorAll(":scope > span"), []);
+}, "querySelectorAll with :scope");
+
+test(() => {
+  assert_array_equals(div.querySelectorAll("#test + p"), [p]);
+  assert_array_equals(p.querySelectorAll("#test + p"), []);
+}, "querySelectorAll with id and sibling");
+</script>
diff --git a/tests/wpt/dom/nodes/ParentNode-querySelectorAll-removed-elements.html b/tests/wpt/dom/nodes/ParentNode-querySelectorAll-removed-elements.html
new file mode 100644
index 00000000..3cefc809
--- /dev/null
+++ b/tests/wpt/dom/nodes/ParentNode-querySelectorAll-removed-elements.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>querySelectorAll must not return removed elements</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<!-- Regression test for https://github.com/jsdom/jsdom/issues/2519 -->
+
+<div id="container"></div>
+
+<script>
+"use strict";
+
+setup({ single_test: true });
+
+const container = document.querySelector("#container");
+function getIDs() {
+  return [...container.querySelectorAll("a.test")].map(el => el.id);
+}
+
+container.innerHTML = `<a id="link-a" class="test">a link</a>`;
+assert_array_equals(getIDs(), ["link-a"], "Sanity check: initial setup");
+
+container.innerHTML = `<a id="link-b" class="test"><img src="foo.jpg"></a>`;
+assert_array_equals(getIDs(), ["link-b"], "After replacement");
+
+container.innerHTML = `<a id="link-a" class="test">a link</a>`;
+assert_array_equals(getIDs(), ["link-a"], "After changing back to the original HTML");
+
+done();
+</script>
diff --git a/tests/wpt/dom/nodes/ParentNode-querySelectors-exclusive.html b/tests/wpt/dom/nodes/ParentNode-querySelectors-exclusive.html
new file mode 100644
index 00000000..5cff9367
--- /dev/null
+++ b/tests/wpt/dom/nodes/ParentNode-querySelectors-exclusive.html
@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>querySelector/querySelectorAll should not include their thisArg</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<!-- Regression test for https://github.com/jsdom/jsdom/issues/2296 -->
+
+<script>
+"use strict";
+
+setup({ single_test: true });
+
+const button = document.createElement("button");
+
+assert_equals(button.querySelector("*"), null, "querySelector, '*', before modification");
+assert_equals(button.querySelector("button"), null, "querySelector, 'button', before modification");
+assert_equals(button.querySelector("button, span"), null, "querySelector, 'button, span', before modification");
+assert_array_equals(button.querySelectorAll("*"), [], "querySelectorAll, '*', before modification");
+assert_array_equals(button.querySelectorAll("button"), [], "querySelectorAll, 'button', before modification");
+assert_array_equals(
+  button.querySelectorAll("button, span"), [],
+  "querySelectorAll, 'button, span', before modification"
+);
+
+
+button.innerHTML = "text";
+
+assert_equals(button.querySelector("*"), null, "querySelector, '*', after modification");
+assert_equals(button.querySelector("button"), null, "querySelector, 'button', after modification");
+assert_equals(button.querySelector("button, span"), null, "querySelector, 'button, span', after modification");
+assert_array_equals(button.querySelectorAll("*"), [], "querySelectorAll, '*', after modification");
+assert_array_equals(button.querySelectorAll("button"), [], "querySelectorAll, 'button', after modification");
+assert_array_equals(
+  button.querySelectorAll("button, span"), [],
+  "querySelectorAll, 'button, span', after modification"
+);
+
+done();
+</script>
diff --git a/tests/wpt/dom/nodes/ParentNode-querySelectors-namespaces.html b/tests/wpt/dom/nodes/ParentNode-querySelectors-namespaces.html
new file mode 100644
index 00000000..714999b3
--- /dev/null
+++ b/tests/wpt/dom/nodes/ParentNode-querySelectors-namespaces.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>querySelectorAll must work with namespace attribute selectors on SVG</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<!-- Regression test for https://github.com/jsdom/jsdom/issues/2028 -->
+
+<svg id="thesvg" xlink:href="foo"></svg>
+
+<script>
+"use strict";
+
+setup({ single_test: true });
+
+const el = document.getElementById("thesvg");
+
+assert_equals(document.querySelector("[*|href]"), el);
+assert_array_equals(document.querySelectorAll("[*|href]"), [el]);
+
+done();
+</script>
diff --git a/tests/wpt/dom/nodes/ParentNode-querySelectors-space-and-dash-attribute-value.html b/tests/wpt/dom/nodes/ParentNode-querySelectors-space-and-dash-attribute-value.html
new file mode 100644
index 00000000..e08c6e6d
--- /dev/null
+++ b/tests/wpt/dom/nodes/ParentNode-querySelectors-space-and-dash-attribute-value.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>querySelector(All) must work for attribute values that contain spaces and dashes</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<!-- Regression test for https://github.com/jsdom/jsdom/issues/2542 -->
+
+<a title="test with - dash and space" id="testme">Test One</a>
+
+<script>
+"use strict";
+const el = document.getElementById("testme");
+
+test(() => {
+  assert_equals(document.querySelector("a[title='test with - dash and space']"), el);
+}, "querySelector");
+
+test(() => {
+  assert_equals(document.querySelector("a[title='test with - dash and space']"), el);
+}, "querySelectorAll");
+</script>
diff --git a/tests/wpt/dom/nodes/selectors.js b/tests/wpt/dom/nodes/selectors.js
new file mode 100644
index 00000000..5e05547c
--- /dev/null
+++ b/tests/wpt/dom/nodes/selectors.js
@@ -0,0 +1,755 @@
+// Bit-mapped flags to indicate which tests the selector is suitable for
+var TEST_QSA              = 0x01; // querySelector() and querySelectorAll() tests
+var TEST_FIND             = 0x04; // find() and findAll() tests, may be unsuitable for querySelector[All]
+var TEST_MATCH            = 0x10; // matches() tests
+
+/*
+ * All of these invalid selectors should result in a SyntaxError being thrown by the APIs.
+ *
+ *   name:     A descriptive name of the selector being tested
+ *   selector: The selector to test
+ */
+var invalidSelectors = [
+  {name: "Empty String",                 selector: ""},
+  {name: "Invalid character",            selector: "["},
+  {name: "Invalid character",            selector: "]"},
+  {name: "Invalid character",            selector: "("},
+  {name: "Invalid character",            selector: ")"},
+  {name: "Invalid character",            selector: "{"},
+  {name: "Invalid character",            selector: "}"},
+  {name: "Invalid character",            selector: "<"},
+  {name: "Invalid character",            selector: ">"},
+  {name: "Invalid ID",                   selector: "#"},
+  {name: "Invalid group of selectors",   selector: "div,"},
+  {name: "Invalid class",                selector: "."},
+  {name: "Invalid class",                selector: ".5cm"},
+  {name: "Invalid class",                selector: "..test"},
+  {name: "Invalid class",                selector: ".foo..quux"},
+  {name: "Invalid class",                selector: ".bar."},
+  {name: "Invalid combinator",           selector: "div % address, p"},
+  {name: "Invalid combinator",           selector: "div ++ address, p"},
+  {name: "Invalid combinator",           selector: "div ~~ address, p"},
+  {name: "Invalid [att=value] selector", selector: "[*=test]"},
+  {name: "Invalid [att=value] selector", selector: "[*|*=test]"},
+  {name: "Invalid [att=value] selector", selector: "[class= space unquoted ]"},
+  {name: "Unknown pseudo-class",         selector: "div:example"},
+  {name: "Unknown pseudo-class",         selector: ":example"},
+  {name: "Unknown pseudo-class",         selector: "div:linkexample"},
+  {name: "Unknown pseudo-element",       selector: "div::example"},
+  {name: "Unknown pseudo-element",       selector: "::example"},
+  {name: "Invalid pseudo-element",       selector: ":::before"},
+  {name: "Invalid pseudo-element",       selector: ":: before"},
+  {name: "Undeclared namespace",         selector: "ns|div"},
+  {name: "Undeclared namespace",         selector: ":not(ns|div)"},
+  {name: "Invalid namespace",            selector: "^|div"},
+  {name: "Invalid namespace",            selector: "$|div"},
+  {name: "Relative selector",            selector: ">*"},
+];
+
+/*
+ * All of these should be valid selectors, expected to match zero or more elements in the document.
+ * None should throw any errors.
+ *
+ *   name:     A descriptive name of the selector being tested
+ *   selector: The selector to test
+ *   expect:   A list of IDs of the elements expected to be matched. List must be given in tree order.
+ *   exclude:  An array of contexts to exclude from testing. The valid values are:
+ *             ["document", "element", "fragment", "detached", "html", "xhtml"]
+ *             The "html" and "xhtml" values represent the type of document being queried. These are useful
+ *             for tests that are affected by differences between HTML and XML, such as case sensitivity.
+ *   level:    An integer indicating the CSS or Selectors level in which the selector being tested was introduced.
+ *   testType: A bit-mapped flag indicating the type of test.
+ *
+ * Note: Interactive pseudo-classes (:active :hover and :focus) have not been tested in this test suite.
+ */
+var validSelectors = [
+  // Type Selector
+  {name: "Type selector, matching html element", selector: "html", expect: ["html"],          exclude: ["element", "fragment", "detached"], level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Type selector, matching html element", selector: "html", expect: [] /*no matches*/, exclude: ["document"],                        level: 1, testType: TEST_QSA},
+  {name: "Type selector, matching body element", selector: "body", expect: ["body"],          exclude: ["element", "fragment", "detached"], level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Type selector, matching body element", selector: "body", expect: [] /*no matches*/, exclude: ["document"],                        level: 1, testType: TEST_QSA},
+
+  // Universal Selector
+  {name: "Universal selector, matching all elements",                                    selector: "*",              expect: ["universal", "universal-p1", "universal-code1", "universal-hr1", "universal-pre1", "universal-span1", "universal-p2", "universal-a1", "universal-address1", "universal-code2", "universal-a2"], level: 2, testType: TEST_MATCH},
+  {name: "Universal selector, matching all children of element with specified ID",       selector: "#universal>*",   expect: ["universal-p1", "universal-hr1", "universal-pre1", "universal-p2", "universal-address1"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Universal selector, matching all grandchildren of element with specified ID",  selector: "#universal>*>*", expect: ["universal-code1", "universal-span1", "universal-a1", "universal-code2"],                 level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Universal selector, matching all children of empty element with specified ID", selector: "#empty>*",       expect: [] /*no matches*/,                                                                         level: 2, testType: TEST_QSA},
+  {name: "Universal selector, matching all descendants of element with specified ID",    selector: "#universal *",   expect: ["universal-p1", "universal-code1", "universal-hr1", "universal-pre1", "universal-span1", "universal-p2", "universal-a1", "universal-address1", "universal-code2", "universal-a2"], level: 2, testType: TEST_QSA | TEST_MATCH},
+
+  // Attribute Selectors
+  // - presence                  [att]
+  {name: "Attribute presence selector, matching align attribute with value",                    selector: ".attr-presence-div1[align]",                             expect: ["attr-presence-div1"],                                                                   level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute presence selector, matching align attribute with empty value",              selector: ".attr-presence-div2[align]",                             expect: ["attr-presence-div2"],                                                                   level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute presence selector, matching title attribute, case insensitivity",           selector: "#attr-presence [*|TiTlE]",                                 expect: ["attr-presence-a1", "attr-presence-span1", "attr-presence-i1"], exclude: ["xhtml"],    level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute presence selector, not matching title attribute, case sensitivity",         selector: "#attr-presence [*|TiTlE]",                                 expect: [],                                                              exclude: ["html"],     level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute presence selector, matching custom data-* attribute",                       selector: "[data-attr-presence]",                                   expect: ["attr-presence-pre1", "attr-presence-blockquote1"],                                      level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute presence selector, not matching attribute with similar name",               selector: ".attr-presence-div3[align], .attr-presence-div4[align]", expect: [] /*no matches*/,                                                                        level: 2, testType: TEST_QSA},
+  {name: "Attribute presence selector, matching attribute with non-ASCII characters",           selector: "ul[data-中文]",                                            expect: ["attr-presence-ul1"],                                                                    level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute presence selector, not matching default option without selected attribute", selector: "#attr-presence-select1 option[selected]",                expect: [] /* no matches */,                                                                      level: 2, testType: TEST_QSA},
+  {name: "Attribute presence selector, matching option with selected attribute",                selector: "#attr-presence-select2 option[selected]",                expect: ["attr-presence-select2-option4"],                                                        level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute presence selector, matching multiple options with selected attributes",     selector: "#attr-presence-select3 option[selected]",                expect: ["attr-presence-select3-option2", "attr-presence-select3-option3"],                       level: 2, testType: TEST_QSA | TEST_MATCH},
+
+  // - value                     [att=val]
+  {name: "Attribute value selector, matching align attribute with value",                                    selector: "#attr-value [align=\"center\"]",                                     expect: ["attr-value-div1"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute value selector, matching align attribute with value, unclosed bracket",                  selector: "#attr-value [align=\"center\"",                                      expect: ["attr-value-div1"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute value selector, matching align attribute with empty value",                              selector: "#attr-value [align=\"\"]",                                           expect: ["attr-value-div2"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute value selector, not matching align attribute with partial value",                        selector: "#attr-value [align=\"c\"]",                                          expect: [] /*no matches*/,   level: 2, testType: TEST_QSA},
+  {name: "Attribute value selector, not matching align attribute with incorrect value",                      selector: "#attr-value [align=\"centera\"]",                                    expect: [] /*no matches*/,   level: 2, testType: TEST_QSA},
+  {name: "Attribute value selector, matching custom data-* attribute with unicode escaped value",            selector: "[data-attr-value=\"\\e9\"]",                                         expect: ["attr-value-div3"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute value selector, matching custom data-* attribute with escaped character",                selector: "[data-attr-value\_foo=\"\\e9\"]",                                    expect: ["attr-value-div4"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute value selector with single-quoted value, matching multiple inputs with type attributes", selector: "#attr-value input[type='hidden'],#attr-value input[type='radio']",   expect: ["attr-value-input3", "attr-value-input4", "attr-value-input6", "attr-value-input8", "attr-value-input9"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute value selector with double-quoted value, matching multiple inputs with type attributes", selector: "#attr-value input[type=\"hidden\"],#attr-value input[type='radio']", expect: ["attr-value-input3", "attr-value-input4", "attr-value-input6", "attr-value-input8", "attr-value-input9"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute value selector with unquoted value, matching multiple inputs with type attributes",      selector: "#attr-value input[type=hidden],#attr-value input[type=radio]",       expect: ["attr-value-input3", "attr-value-input4", "attr-value-input6", "attr-value-input8", "attr-value-input9"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute value selector, matching attribute with value using non-ASCII characters",               selector: "[data-attr-value=中文]",                                               expect: ["attr-value-div5"], level: 2, testType: TEST_QSA | TEST_MATCH},
+
+  // - whitespace-separated list [att~=val]
+  {name: "Attribute whitespace-separated list selector, matching class attribute with value",                                  selector: "#attr-whitespace [class~=\"div1\"]",                                        expect: ["attr-whitespace-div1"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute whitespace-separated list selector, not matching class attribute with empty value",                        selector: "#attr-whitespace [class~=\"\"]",                                            expect: [] /*no matches*/ ,       level: 2, testType: TEST_QSA},
+  {name: "Attribute whitespace-separated list selector, not matching class attribute with partial value",                      selector: "[data-attr-whitespace~=\"div\"]",                                           expect: [] /*no matches*/ ,       level: 2, testType: TEST_QSA},
+  {name: "Attribute whitespace-separated list selector, matching custom data-* attribute with unicode escaped value",          selector: "[data-attr-whitespace~=\"\\0000e9\"]",                                      expect: ["attr-whitespace-div4"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute whitespace-separated list selector, matching custom data-* attribute with escaped character",              selector: "[data-attr-whitespace\_foo~=\"\\e9\"]",                                     expect: ["attr-whitespace-div5"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute whitespace-separated list selector with single-quoted value, matching multiple links with rel attributes", selector: "#attr-whitespace a[rel~='bookmark'],  #attr-whitespace a[rel~='nofollow']", expect: ["attr-whitespace-a1", "attr-whitespace-a2", "attr-whitespace-a3", "attr-whitespace-a5", "attr-whitespace-a7"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute whitespace-separated list selector with double-quoted value, matching multiple links with rel attributes", selector: "#attr-whitespace a[rel~=\"bookmark\"],#attr-whitespace a[rel~='nofollow']", expect: ["attr-whitespace-a1", "attr-whitespace-a2", "attr-whitespace-a3", "attr-whitespace-a5", "attr-whitespace-a7"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute whitespace-separated list selector with unquoted value, matching multiple links with rel attributes",      selector: "#attr-whitespace a[rel~=bookmark],    #attr-whitespace a[rel~=nofollow]",   expect: ["attr-whitespace-a1", "attr-whitespace-a2", "attr-whitespace-a3", "attr-whitespace-a5", "attr-whitespace-a7"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute whitespace-separated list selector with double-quoted value, not matching value with space",               selector: "#attr-whitespace a[rel~=\"book mark\"]",                                    expect: [] /* no matches */,      level: 2, testType: TEST_QSA},
+  {name: "Attribute whitespace-separated list selector, matching title attribute with value using non-ASCII characters",       selector: "#attr-whitespace [title~=中文]",                                              expect: ["attr-whitespace-p1"],   level: 2, testType: TEST_QSA | TEST_MATCH},
+
+  // - hyphen-separated list     [att|=val]
+  {name: "Attribute hyphen-separated list selector, not matching unspecified lang attribute",    selector: "#attr-hyphen-div1[lang|=\"en\"]",    expect: [] /*no matches*/,    level: 2, testType: TEST_QSA},
+  {name: "Attribute hyphen-separated list selector, matching lang attribute with exact value",   selector: "#attr-hyphen-div2[lang|=\"fr\"]",    expect: ["attr-hyphen-div2"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute hyphen-separated list selector, matching lang attribute with partial value", selector: "#attr-hyphen-div3[lang|=\"en\"]",    expect: ["attr-hyphen-div3"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute hyphen-separated list selector, not matching incorrect value",               selector: "#attr-hyphen-div4[lang|=\"es-AR\"]", expect: [] /*no matches*/,    level: 2, testType: TEST_QSA},
+
+  // - substring begins-with     [att^=val] (Level 3)
+  {name: "Attribute begins with selector, matching href attributes beginning with specified substring",                             selector: "#attr-begins a[href^=\"http://www\"]", expect: ["attr-begins-a1", "attr-begins-a3"],     level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute begins with selector, matching lang attributes beginning with specified substring, ",                           selector: "#attr-begins [lang^=\"en-\"]",         expect: ["attr-begins-div2", "attr-begins-div4"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute begins with selector, not matching class attribute with empty value",                                           selector: "#attr-begins [class^=\"\"]",          expect: [] /*no matches*/,                        level: 3, testType: TEST_QSA},
+  {name: "Attribute begins with selector, not matching class attribute not beginning with specified substring",                     selector: "#attr-begins [class^=apple]",          expect: [] /*no matches*/,                        level: 3, testType: TEST_QSA},
+  {name: "Attribute begins with selector with single-quoted value, matching class attribute beginning with specified substring",    selector: "#attr-begins [class^=' apple']",       expect: ["attr-begins-p1"],                       level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute begins with selector with double-quoted value, matching class attribute beginning with specified substring",    selector: "#attr-begins [class^=\" apple\"]",     expect: ["attr-begins-p1"],                       level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute begins with selector with unquoted value, not matching class attribute not beginning with specified substring", selector: "#attr-begins [class^= apple]",         expect: [] /*no matches*/,                        level: 3, testType: TEST_QSA},
+
+  // - substring ends-with       [att$=val] (Level 3)
+  {name: "Attribute ends with selector, matching href attributes ending with specified substring",                             selector: "#attr-ends a[href$=\".org\"]",   expect: ["attr-ends-a1", "attr-ends-a3"],     level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute ends with selector, matching lang attributes ending with specified substring, ",                           selector: "#attr-ends [lang$=\"-CH\"]",     expect: ["attr-ends-div2", "attr-ends-div4"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute ends with selector, not matching class attribute with empty value",                                        selector: "#attr-ends [class$=\"\"]",       expect: [] /*no matches*/,                    level: 3, testType: TEST_QSA},
+  {name: "Attribute ends with selector, not matching class attribute not ending with specified substring",                     selector: "#attr-ends [class$=apple]",      expect: [] /*no matches*/,                    level: 3, testType: TEST_QSA},
+  {name: "Attribute ends with selector with single-quoted value, matching class attribute ending with specified substring",    selector: "#attr-ends [class$='apple ']",   expect: ["attr-ends-p1"],                     level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute ends with selector with double-quoted value, matching class attribute ending with specified substring",    selector: "#attr-ends [class$=\"apple \"]", expect: ["attr-ends-p1"],                     level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute ends with selector with unquoted value, not matching class attribute not ending with specified substring", selector: "#attr-ends [class$=apple ]",     expect: [] /*no matches*/,                    level: 3, testType: TEST_QSA},
+
+  // - substring contains        [att*=val] (Level 3)
+  {name: "Attribute contains selector, matching href attributes beginning with specified substring",                          selector: "#attr-contains a[href*=\"http://www\"]",     expect: ["attr-contains-a1", "attr-contains-a3"],     level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute contains selector, matching href attributes ending with specified substring",                             selector: "#attr-contains a[href*=\".org\"]",           expect: ["attr-contains-a1", "attr-contains-a2"],     level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute contains selector, matching href attributes containing specified substring",                              selector: "#attr-contains a[href*=\".example.\"]",      expect: ["attr-contains-a1", "attr-contains-a3"],     level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute contains selector, matching lang attributes beginning with specified substring, ",                        selector: "#attr-contains [lang*=\"en-\"]",             expect: ["attr-contains-div2", "attr-contains-div6"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute contains selector, matching lang attributes ending with specified substring, ",                           selector: "#attr-contains [lang*=\"-CH\"]",             expect: ["attr-contains-div3", "attr-contains-div5"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute contains selector, not matching class attribute with empty value",                                        selector: "#attr-contains [class*=\"\"]",               expect: [] /*no matches*/,                            level: 3, testType: TEST_QSA},
+  {name: "Attribute contains selector with single-quoted value, matching class attribute beginning with specified substring", selector: "#attr-contains [class*=' apple']",           expect: ["attr-contains-p1"],                         level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute contains selector with single-quoted value, matching class attribute ending with specified substring",    selector: "#attr-contains [class*='orange ']",          expect: ["attr-contains-p1"],                         level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute contains selector with single-quoted value, matching class attribute containing specified substring",     selector: "#attr-contains [class*='ple banana ora']",   expect: ["attr-contains-p1"],                         level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute contains selector with double-quoted value, matching class attribute beginning with specified substring", selector: "#attr-contains [class*=\" apple\"]",         expect: ["attr-contains-p1"],                         level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute contains selector with double-quoted value, matching class attribute ending with specified substring",    selector: "#attr-contains [class*=\"orange \"]",        expect: ["attr-contains-p1"],                         level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute contains selector with double-quoted value, matching class attribute containing specified substring",     selector: "#attr-contains [class*=\"ple banana ora\"]", expect: ["attr-contains-p1"],                         level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute contains selector with unquoted value, matching class attribute beginning with specified substring",      selector: "#attr-contains [class*= apple]",             expect: ["attr-contains-p1"],                         level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute contains selector with unquoted value, matching class attribute ending with specified substring",         selector: "#attr-contains [class*=orange ]",            expect: ["attr-contains-p1"],                         level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "Attribute contains selector with unquoted value, matching class attribute containing specified substring",          selector: "#attr-contains [class*= banana ]",           expect: ["attr-contains-p1"],                         level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // Pseudo-classes
+  // - :root                 (Level 3)
+  {name: ":root pseudo-class selector, matching document root element",      selector: ":root", expect: ["html"],          exclude: ["element", "fragment", "detached"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":root pseudo-class selector, not matching document root element",  selector: ":root", expect: [] /*no matches*/, exclude: ["document"],                        level: 3, testType: TEST_QSA},
+
+  // - :nth-child(n)         (Level 3)
+  // XXX write descriptions
+  {name: ":nth-child selector, matching the third child element",                              selector: "#pseudo-nth-table1 :nth-child(3)", expect: ["pseudo-nth-td3", "pseudo-nth-td9", "pseudo-nth-tr3", "pseudo-nth-td15"],                    level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":nth-child selector, matching every third child element",                            selector: "#pseudo-nth li:nth-child(3n)",     expect: ["pseudo-nth-li3", "pseudo-nth-li6", "pseudo-nth-li9", "pseudo-nth-li12"],                    level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":nth-child selector, matching every second child element, starting from the fourth", selector: "#pseudo-nth li:nth-child(2n+4)",   expect: ["pseudo-nth-li4", "pseudo-nth-li6", "pseudo-nth-li8", "pseudo-nth-li10", "pseudo-nth-li12"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":nth-child selector, matching every fourth child element, starting from the third",  selector: "#pseudo-nth-p1 :nth-child(4n-1)",  expect: ["pseudo-nth-em2", "pseudo-nth-span3"],                                                       level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // - :nth-last-child       (Level 3)
+  {name: ":nth-last-child selector, matching the third last child element",                                           selector: "#pseudo-nth-table1 :nth-last-child(3)", expect: ["pseudo-nth-tr1", "pseudo-nth-td4", "pseudo-nth-td10", "pseudo-nth-td16"],                 level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":nth-last-child selector, matching every third child element from the end",                                 selector: "#pseudo-nth li:nth-last-child(3n)",     expect: ["pseudo-nth-li1", "pseudo-nth-li4", "pseudo-nth-li7", "pseudo-nth-li10"],                  level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":nth-last-child selector, matching every second child element from the end, starting from the fourth last", selector: "#pseudo-nth li:nth-last-child(2n+4)",   expect: ["pseudo-nth-li1", "pseudo-nth-li3", "pseudo-nth-li5", "pseudo-nth-li7", "pseudo-nth-li9"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":nth-last-child selector, matching every fourth element from the end, starting from the third last",        selector: "#pseudo-nth-p1 :nth-last-child(4n-1)",  expect: ["pseudo-nth-span2", "pseudo-nth-span4"],                                                   level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // - :nth-of-type(n)       (Level 3)
+  {name: ":nth-of-type selector, matching the third em element",                                        selector: "#pseudo-nth-p1 em:nth-of-type(3)",      expect: ["pseudo-nth-em3"],                                                                                 level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":nth-of-type selector, matching every second element of their type",                          selector: "#pseudo-nth-p1 :nth-of-type(2n)",       expect: ["pseudo-nth-em2", "pseudo-nth-span2", "pseudo-nth-span4", "pseudo-nth-strong2", "pseudo-nth-em4"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":nth-of-type selector, matching every second elemetn of their type, starting from the first", selector: "#pseudo-nth-p1 span:nth-of-type(2n-1)", expect: ["pseudo-nth-span1", "pseudo-nth-span3"],                                                           level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // - :nth-last-of-type(n)  (Level 3)
+  {name: ":nth-last-of-type selector, matching the third last em element", selector: "#pseudo-nth-p1 em:nth-last-of-type(3)",      expect: ["pseudo-nth-em2"],                                                                                 level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":nth-last-of-type selector, matching every second last element of their type", selector: "#pseudo-nth-p1 :nth-last-of-type(2n)",       expect: ["pseudo-nth-span1", "pseudo-nth-em1", "pseudo-nth-strong1", "pseudo-nth-em3", "pseudo-nth-span3"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":nth-last-of-type selector, matching every second last element of their type, starting from the last", selector: "#pseudo-nth-p1 span:nth-last-of-type(2n-1)", expect: ["pseudo-nth-span2", "pseudo-nth-span4"],                                                           level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // - :first-of-type        (Level 3)
+  {name: ":first-of-type selector, matching the first em element", selector: "#pseudo-nth-p1 em:first-of-type",      expect: ["pseudo-nth-em1"],                                           level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":first-of-type selector, matching the first of every type of element", selector: "#pseudo-nth-p1 :first-of-type",        expect: ["pseudo-nth-span1", "pseudo-nth-em1", "pseudo-nth-strong1"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":first-of-type selector, matching the first td element in each table row", selector: "#pseudo-nth-table1 tr :first-of-type", expect: ["pseudo-nth-td1", "pseudo-nth-td7", "pseudo-nth-td13"],      level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // - :last-of-type         (Level 3)
+  {name: ":last-of-type selector, matching the last em elemnet", selector: "#pseudo-nth-p1 em:last-of-type",      expect: ["pseudo-nth-em4"],                                           level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":last-of-type selector, matching the last of every type of element", selector: "#pseudo-nth-p1 :last-of-type",        expect: ["pseudo-nth-span4", "pseudo-nth-strong2", "pseudo-nth-em4"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":last-of-type selector, matching the last td element in each table row", selector: "#pseudo-nth-table1 tr :last-of-type", expect: ["pseudo-nth-td6", "pseudo-nth-td12", "pseudo-nth-td18"],     level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // - :first-child
+  {name: ":first-child pseudo-class selector, matching first child div element",          selector: "#pseudo-first-child div:first-child",                                        expect: ["pseudo-first-child-div1"],                                                          level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: ":first-child pseudo-class selector, doesn't match non-first-child elements",    selector: ".pseudo-first-child-div2:first-child, .pseudo-first-child-div3:first-child", expect: [] /*no matches*/,                                                                    level: 2, testType: TEST_QSA},
+  {name: ":first-child pseudo-class selector, matching first-child of multiple elements", selector: "#pseudo-first-child span:first-child",                                       expect: ["pseudo-first-child-span1", "pseudo-first-child-span3", "pseudo-first-child-span5"], level: 2, testType: TEST_QSA | TEST_MATCH},
+
+  // - :last-child           (Level 3)
+  {name: ":last-child pseudo-class selector, matching last child div element",           selector: "#pseudo-last-child div:last-child",                                       expect: ["pseudo-last-child-div3"],                                                        level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":last-child pseudo-class selector, doesn't match non-last-child elements",     selector: ".pseudo-last-child-div1:last-child, .pseudo-last-child-div2:first-child", expect: [] /*no matches*/,                                                                 level: 3, testType: TEST_QSA},
+  {name: ":last-child pseudo-class selector, matching first-child of multiple elements", selector: "#pseudo-last-child span:last-child",                                      expect: ["pseudo-last-child-span2", "pseudo-last-child-span4", "pseudo-last-child-span6"], level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // - :only-child           (Level 3)
+  {name: ":pseudo-only-child pseudo-class selector, matching all only-child elements", selector: "#pseudo-only :only-child", expect: ["pseudo-only-span1"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":pseudo-only-child pseudo-class selector, matching only-child em elements",  selector: "#pseudo-only em:only-child", expect: [] /*no matches*/,   level: 3, testType: TEST_QSA},
+
+  // - :only-of-type         (Level 3)
+  {name: ":pseudo-only-of-type pseudo-class selector, matching all elements with no siblings of the same type", selector: "#pseudo-only :only-of-type", expect: ["pseudo-only-span1", "pseudo-only-em1"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":pseudo-only-of-type pseudo-class selector, matching em elements with no siblings of the same type",  selector: "#pseudo-only em:only-of-type", expect: ["pseudo-only-em1"],                    level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // - :empty                (Level 3)
+  {name: ":empty pseudo-class selector, matching empty p elements",   selector: "#pseudo-empty p:empty", expect: ["pseudo-empty-p1", "pseudo-empty-p2"],                       level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":empty pseudo-class selector, matching all empty elements", selector: "#pseudo-empty :empty",  expect: ["pseudo-empty-p1", "pseudo-empty-p2", "pseudo-empty-span1"], level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // - :link and :visited
+  // Implementations may treat all visited links as unvisited, so these cannot be tested separately.
+  // The only guarantee is that ":link,:visited" matches the set of all visited and unvisited links and that they are individually mutually exclusive sets.
+  {name: ":link and :visited pseudo-class selectors, matching a and area elements with href attributes",        selector: "#pseudo-link :link, #pseudo-link :visited", expect: ["pseudo-link-a1", "pseudo-link-a2", "pseudo-link-area1"],                                level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: ":link and :visited pseudo-class selectors, matching no elements",                                     selector: "#head :link, #head :visited",               expect: [] /*no matches*/,                          exclude: ["element", "fragment", "detached"], level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: ":link and :visited pseudo-class selectors, not matching link elements with href attributes",          selector: "#head :link, #head :visited",               expect: [] /*no matches*/,                          exclude: ["document"],                        level: 1, testType: TEST_QSA},
+  {name: ":link and :visited pseudo-class selectors, chained, mutually exclusive pseudo-classes match nothing", selector: ":link:visited",                             expect: [] /*no matches*/,                          exclude: ["document"],                        level: 1, testType: TEST_QSA},
+
+  // - :target               (Level 3)
+  {name: ":target pseudo-class selector, matching the element referenced by the URL fragment identifier", selector: ":target", expect: [] /*no matches*/, exclude: ["document", "element"],  level: 3, testType: TEST_QSA},
+  {name: ":target pseudo-class selector, matching the element referenced by the URL fragment identifier", selector: ":target", expect: ["target"],        exclude: ["fragment", "detached"], level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // - :lang()
+  {name: ":lang pseudo-class selector, matching inherited language",                     selector: "#pseudo-lang-div1:lang(en)",    expect: ["pseudo-lang-div1"], exclude: ["detached", "fragment"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: ":lang pseudo-class selector, not matching element with no inherited language", selector: "#pseudo-lang-div1:lang(en)",    expect: [] /*no matches*/,    exclude: ["document", "element"],  level: 2, testType: TEST_QSA},
+  {name: ":lang pseudo-class selector, matching specified language with exact value",    selector: "#pseudo-lang-div2:lang(fr)",    expect: ["pseudo-lang-div2"],                                    level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: ":lang pseudo-class selector, matching specified language with partial value",  selector: "#pseudo-lang-div3:lang(en)",    expect: ["pseudo-lang-div3"],                                    level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: ":lang pseudo-class selector, not matching incorrect language",                 selector: "#pseudo-lang-div4:lang(es-AR)", expect: [] /*no matches*/,                                       level: 2, testType: TEST_QSA},
+
+  // - :enabled              (Level 3)
+  {name: ":enabled pseudo-class selector, matching all enabled form controls",  selector: "#pseudo-ui :enabled",  expect: ["pseudo-ui-input1", "pseudo-ui-input2", "pseudo-ui-input3", "pseudo-ui-input4", "pseudo-ui-input5", "pseudo-ui-input6",
+                                                                                                                           "pseudo-ui-input7", "pseudo-ui-input8", "pseudo-ui-input9", "pseudo-ui-textarea1", "pseudo-ui-button1"],    level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":enabled pseudo-class selector, not matching link elements",  selector: "#pseudo-link :enabled",  expect: [] /*no matches*/, unexpected: ["pseudo-link-a1","pseudo-link-a2","pseudo-link-a3","pseudo-link-map1","pseudo-link-area1","pseudo-link-area2"],   level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // - :disabled             (Level 3)
+  {name: ":disabled pseudo-class selector, matching all disabled form controls", selector: "#pseudo-ui :disabled", expect: ["pseudo-ui-input10", "pseudo-ui-input11", "pseudo-ui-input12", "pseudo-ui-input13", "pseudo-ui-input14", "pseudo-ui-input15",
+                                                                                                                           "pseudo-ui-input16", "pseudo-ui-input17", "pseudo-ui-input18", "pseudo-ui-textarea2", "pseudo-ui-button2"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":disabled pseudo-class selector, not matching link elements", selector: "#pseudo-link :disabled", expect: [] /*no matches*/, unexpected: ["pseudo-link-a1","pseudo-link-a2","pseudo-link-a3","pseudo-link-map1","pseudo-link-area1","pseudo-link-area2"], level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // - :checked              (Level 3)
+  {name: ":checked pseudo-class selector, matching checked radio buttons and checkboxes", selector: "#pseudo-ui :checked", expect: ["pseudo-ui-input4", "pseudo-ui-input6", "pseudo-ui-input13", "pseudo-ui-input15"],  level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // - :not(s)               (Level 3)
+  {name: ":not pseudo-class selector, matching ", selector: "#not>:not(div)",   expect: ["not-p1", "not-p2", "not-p3"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":not pseudo-class selector, matching ", selector: "#not * :not(:first-child)",   expect: ["not-em1", "not-em2", "not-em3"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: ":not pseudo-class selector, matching nothing", selector: ":not(*)",   expect: [] /* no matches */, level: 3, testType: TEST_QSA},
+  {name: ":not pseudo-class selector, matching nothing", selector: ":not(*|*)", expect: [] /* no matches */, level: 3, testType: TEST_QSA},
+  {name: ":not pseudo-class selector argument surrounded by spaces, matching ", selector: "#not>:not( div )",   expect: ["not-p1", "not-p2", "not-p3"], level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // Pseudo-elements
+  // - ::first-line
+  {name: ":first-line pseudo-element (one-colon syntax) selector, not matching any elements",    selector: "#pseudo-element:first-line",    expect: [] /*no matches*/, level: 2, testType: TEST_QSA},
+  {name: "::first-line pseudo-element (two-colon syntax) selector, not matching any elements",   selector: "#pseudo-element::first-line",   expect: [] /*no matches*/, level: 3, testType: TEST_QSA},
+
+  // - ::first-letter
+  {name: ":first-letter pseudo-element (one-colon syntax) selector, not matching any elements",  selector: "#pseudo-element:first-letter",  expect: [] /*no matches*/, level: 2, testType: TEST_QSA},
+  {name: "::first-letter pseudo-element (two-colon syntax) selector, not matching any elements", selector: "#pseudo-element::first-letter", expect: [] /*no matches*/, level: 3, testType: TEST_QSA},
+
+  // - ::before
+  {name: ":before pseudo-element (one-colon syntax) selector, not matching any elements",        selector: "#pseudo-element:before",        expect: [] /*no matches*/, level: 2, testType: TEST_QSA},
+  {name: "::before pseudo-element (two-colon syntax) selector, not matching any elements",       selector: "#pseudo-element::before",       expect: [] /*no matches*/, level: 3, testType: TEST_QSA},
+
+  // - ::after
+  {name: ":after pseudo-element (one-colon syntax) selector, not matching any elements",         selector: "#pseudo-element:after",         expect: [] /*no matches*/, level: 2, testType: TEST_QSA},
+  {name: "::after pseudo-element (two-colon syntax) selector, not matching any elements",        selector: "#pseudo-element::after",        expect: [] /*no matches*/, level: 3, testType: TEST_QSA},
+
+  // Class Selectors
+  {name: "Class selector, matching element with specified class",                                           selector: ".class-p",                expect: ["class-p1","class-p2", "class-p3"],                                              level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Class selector, chained, matching only elements with all specified classes",                      selector: "#class .apple.orange.banana",    expect: ["class-div1", "class-div2", "class-p4", "class-div3", "class-p6", "class-div4"], level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Class Selector, chained, with type selector",                                                     selector: "div.apple.banana.orange", expect: ["class-div1", "class-div2", "class-div3", "class-div4"],                         level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Class selector, matching element with class value using non-ASCII characters (1)",                selector: ".\u53F0\u5317Ta\u0301ibe\u030Ci",             expect: ["class-span1"],               level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Class selector, matching multiple elements with class value using non-ASCII characters",          selector: ".\u53F0\u5317",                     expect: ["class-span1","class-span2"], level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Class selector, chained, matching element with multiple class values using non-ASCII characters (1)", selector: ".\u53F0\u5317Ta\u0301ibe\u030Ci.\u53F0\u5317",          expect: ["class-span1"],               level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Class selector, matching element with class with escaped character",                              selector: ".foo\\:bar",              expect: ["class-span3"],               level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Class selector, matching element with class with escaped character",                              selector: ".test\\.foo\\[5\\]bar",   expect: ["class-span4"],               level: 1, testType: TEST_QSA | TEST_MATCH},
+
+  // ID Selectors
+  {name: "ID selector, matching element with specified id",           selector: "#id #id-div1",              expect: ["id-div1"],            level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "ID selector, chained, matching element with specified id",  selector: "#id-div1, #id-div1",        expect: ["id-div1"],            level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "ID selector, chained, matching element with specified id",  selector: "#id-div1, #id-div2",        expect: ["id-div1", "id-div2"], level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "ID Selector, chained, with type selector",                  selector: "div#id-div1, div#id-div2",  expect: ["id-div1", "id-div2"], level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "ID selector, not matching non-existent descendant",         selector: "#id #none",                 expect: [] /*no matches*/,      level: 1, testType: TEST_QSA},
+  {name: "ID selector, not matching non-existent ancestor",           selector: "#none #id-div1",            expect: [] /*no matches*/,      level: 1, testType: TEST_QSA},
+  {name: "ID selector, matching multiple elements with duplicate id", selector: "#id-li-duplicate",          expect: ["id-li-duplicate", "id-li-duplicate", "id-li-duplicate", "id-li-duplicate"], level: 1, testType: TEST_QSA | TEST_MATCH},
+
+  {name: "ID selector, matching id value using non-ASCII characters (1)",    selector: "#\u53F0\u5317Ta\u0301ibe\u030Ci",           expect: ["\u53F0\u5317Ta\u0301ibe\u030Ci"],       level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "ID selector, matching id value using non-ASCII characters (2)",    selector: "#\u53F0\u5317",                   expect: ["\u53F0\u5317"],               level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "ID selector, matching id values using non-ASCII characters (1)", selector: "#\u53F0\u5317Ta\u0301ibe\u030Ci, #\u53F0\u5317",      expect: ["\u53F0\u5317Ta\u0301ibe\u030Ci", "\u53F0\u5317"], level: 1, testType: TEST_QSA | TEST_MATCH},
+
+  // XXX runMatchesTest() in level2-lib.js can't handle this because obtaining the expected nodes requires escaping characters when generating the selector from 'expect' values
+  {name: "ID selector, matching element with id with escaped character", selector: "#\\#foo\\:bar",         expect: ["#foo:bar"],         level: 1, testType: TEST_QSA},
+  {name: "ID selector, matching element with id with escaped character", selector: "#test\\.foo\\[5\\]bar", expect: ["test.foo[5]bar"],   level: 1, testType: TEST_QSA},
+
+  // Namespaces
+  // XXX runMatchesTest() in level2-lib.js can't handle these because non-HTML elements don't have a recognised id
+  {name: "Namespace selector, matching element with any namespace",        selector: "#any-namespace *|div", expect: ["any-namespace-div1", "any-namespace-div2", "any-namespace-div3", "any-namespace-div4"], level: 3, testType: TEST_QSA},
+  {name: "Namespace selector, matching div elements in no namespace only", selector: "#no-namespace |div",   expect: ["no-namespace-div3"], level: 3, testType: TEST_QSA},
+  {name: "Namespace selector, matching any elements in no namespace only", selector: "#no-namespace |*",     expect: ["no-namespace-div3"], level: 3, testType: TEST_QSA},
+
+  // Combinators
+  // - Descendant combinator ' '
+  {name: "Descendant combinator, matching element that is a descendant of an element with id",                 selector: "#descendant div",                   expect: ["descendant-div1", "descendant-div2", "descendant-div3", "descendant-div4"], level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Descendant combinator, matching element with id that is a descendant of an element",                 selector: "body #descendant-div1",             expect: ["descendant-div1"], exclude: ["detached", "fragment"], level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Descendant combinator, matching element with id that is a descendant of an element",                 selector: "div #descendant-div1",              expect: ["descendant-div1"],                                    level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Descendant combinator, matching element with id that is a descendant of an element with id",         selector: "#descendant #descendant-div2",      expect: ["descendant-div2"],                                    level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Descendant combinator, matching element with class that is a descendant of an element with id",      selector: "#descendant .descendant-div2",      expect: ["descendant-div2"],                                    level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Descendant combinator, matching element with class that is a descendant of an element with class",   selector: ".descendant-div1 .descendant-div3", expect: ["descendant-div3"],                                    level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Descendant combinator, not matching element with id that is not a descendant of an element with id", selector: "#descendant-div1 #descendant-div4", expect: [] /*no matches*/,                                      level: 1, testType: TEST_QSA},
+  {name: "Descendant combinator, whitespace characters",                                                       selector: "#descendant\t\r\n#descendant-div2", expect: ["descendant-div2"],                                    level: 1, testType: TEST_QSA | TEST_MATCH},
+
+  /* The future of this combinator is uncertain, see
+   * https://github.com/w3c/csswg-drafts/issues/641
+   * These tests are commented out until a final decision is made on whether to
+   * keep the feature in the spec.
+   */
+
+  // // - Descendant combinator '>>'
+  // {name: "Descendant combinator '>>', matching element that is a descendant of an element with id",                 selector: "#descendant>>div",                   expect: ["descendant-div1", "descendant-div2", "descendant-div3", "descendant-div4"], level: 1, testType: TEST_QSA | TEST_MATCH},
+  // {name: "Descendant combinator '>>', matching element with id that is a descendant of an element",                 selector: "body>>#descendant-div1",             expect: ["descendant-div1"], exclude: ["detached", "fragment"], level: 1, testType: TEST_QSA | TEST_MATCH},
+  // {name: "Descendant combinator '>>', matching element with id that is a descendant of an element",                 selector: "div>>#descendant-div1",              expect: ["descendant-div1"],                                    level: 1, testType: TEST_QSA | TEST_MATCH},
+  // {name: "Descendant combinator '>>', matching element with id that is a descendant of an element with id",         selector: "#descendant>>#descendant-div2",      expect: ["descendant-div2"],                                    level: 1, testType: TEST_QSA | TEST_MATCH},
+  // {name: "Descendant combinator '>>', matching element with class that is a descendant of an element with id",      selector: "#descendant>>.descendant-div2",      expect: ["descendant-div2"],                                    level: 1, testType: TEST_QSA | TEST_MATCH},
+  // {name: "Descendant combinator '>>', matching element with class that is a descendant of an element with class",   selector: ".descendant-div1>>.descendant-div3", expect: ["descendant-div3"],                                    level: 1, testType: TEST_QSA | TEST_MATCH},
+  // {name: "Descendant combinator '>>', not matching element with id that is not a descendant of an element with id", selector: "#descendant-div1>>#descendant-div4", expect: [] /*no matches*/,                                      level: 1, testType: TEST_QSA},
+
+  // - Child combinator '>'
+  {name: "Child combinator, matching element that is a child of an element with id",                       selector: "#child>div",                          expect: ["child-div1", "child-div4"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Child combinator, matching element with id that is a child of an element",                       selector: "div>#child-div1",                     expect: ["child-div1"],               level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Child combinator, matching element with id that is a child of an element with id",               selector: "#child>#child-div1",                  expect: ["child-div1"],               level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Child combinator, matching element with id that is a child of an element with class",            selector: "#child-div1>.child-div2",             expect: ["child-div2"],               level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Child combinator, matching element with class that is a child of an element with class",         selector: ".child-div1>.child-div2",             expect: ["child-div2"],               level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Child combinator, not matching element with id that is not a child of an element with id",       selector: "#child>#child-div3",                  expect: [] /*no matches*/,            level: 2, testType: TEST_QSA},
+  {name: "Child combinator, not matching element with id that is not a child of an element with class",    selector: "#child-div1>.child-div3",             expect: [] /*no matches*/,            level: 2, testType: TEST_QSA},
+  {name: "Child combinator, not matching element with class that is not a child of an element with class", selector: ".child-div1>.child-div3",             expect: [] /*no matches*/,            level: 2, testType: TEST_QSA},
+  {name: "Child combinator, surrounded by whitespace",                                                     selector: "#child-div1\t\r\n>\t\r\n#child-div2", expect: ["child-div2"],               level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Child combinator, whitespace after",                                                             selector: "#child-div1>\t\r\n#child-div2",       expect: ["child-div2"],               level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Child combinator, whitespace before",                                                            selector: "#child-div1\t\r\n>#child-div2",       expect: ["child-div2"],               level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Child combinator, no whitespace",                                                                selector: "#child-div1>#child-div2",             expect: ["child-div2"],               level: 2, testType: TEST_QSA | TEST_MATCH},
+
+  // - Adjacent sibling combinator '+'
+  {name: "Adjacent sibling combinator, matching element that is an adjacent sibling of an element with id",                 selector: "#adjacent-div2+div",                                         expect: ["adjacent-div4"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Adjacent sibling combinator, matching element with id that is an adjacent sibling of an element",                 selector: "div+#adjacent-div4",                                         expect: ["adjacent-div4"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Adjacent sibling combinator, matching element with id that is an adjacent sibling of an element with id",         selector: "#adjacent-div2+#adjacent-div4",                              expect: ["adjacent-div4"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Adjacent sibling combinator, matching element with class that is an adjacent sibling of an element with id",      selector: "#adjacent-div2+.adjacent-div4",                              expect: ["adjacent-div4"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Adjacent sibling combinator, matching element with class that is an adjacent sibling of an element with class",   selector: ".adjacent-div2+.adjacent-div4",                              expect: ["adjacent-div4"], level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Adjacent sibling combinator, matching p element that is an adjacent sibling of a div element",                    selector: "#adjacent div+p",                                            expect: ["adjacent-p2"],   level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Adjacent sibling combinator, not matching element with id that is not an adjacent sibling of an element with id", selector: "#adjacent-div2+#adjacent-p2, #adjacent-div2+#adjacent-div1", expect: [] /*no matches*/, level: 2, testType: TEST_QSA},
+  {name: "Adjacent sibling combinator, surrounded by whitespace",                                                           selector: "#adjacent-p2\t\r\n+\t\r\n#adjacent-p3",                      expect: ["adjacent-p3"],   level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Adjacent sibling combinator, whitespace after",                                                                   selector: "#adjacent-p2+\t\r\n#adjacent-p3",                            expect: ["adjacent-p3"],   level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Adjacent sibling combinator, whitespace before",                                                                  selector: "#adjacent-p2\t\r\n+#adjacent-p3",                            expect: ["adjacent-p3"],   level: 2, testType: TEST_QSA | TEST_MATCH},
+  {name: "Adjacent sibling combinator, no whitespace",                                                                      selector: "#adjacent-p2+#adjacent-p3",                                  expect: ["adjacent-p3"],   level: 2, testType: TEST_QSA | TEST_MATCH},
+
+  // - General sibling combinator ~ (Level 3)
+  {name: "General sibling combinator, matching element that is a sibling of an element with id",                    selector: "#sibling-div2~div",                                        expect: ["sibling-div4", "sibling-div6"], level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "General sibling combinator, matching element with id that is a sibling of an element",                    selector: "div~#sibling-div4",                                        expect: ["sibling-div4"],                 level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "General sibling combinator, matching element with id that is a sibling of an element with id",            selector: "#sibling-div2~#sibling-div4",                              expect: ["sibling-div4"],                 level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "General sibling combinator, matching element with class that is a sibling of an element with id",         selector: "#sibling-div2~.sibling-div",                               expect: ["sibling-div4", "sibling-div6"],                 level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "General sibling combinator, matching p element that is a sibling of a div element",                       selector: "#sibling div~p",                                           expect: ["sibling-p2", "sibling-p3"],                   level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "General sibling combinator, not matching element with id that is not a sibling after a p element",        selector: "#sibling>p~div",                                           expect: [] /*no matches*/,                level: 3, testType: TEST_QSA},
+  {name: "General sibling combinator, not matching element with id that is not a sibling after an element with id", selector: "#sibling-div2~#sibling-div3, #sibling-div2~#sibling-div1", expect: [] /*no matches*/,                level: 3, testType: TEST_QSA},
+  {name: "General sibling combinator, surrounded by whitespace",                                                    selector: "#sibling-p2\t\r\n~\t\r\n#sibling-p3",                      expect: ["sibling-p3"],                   level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "General sibling combinator, whitespace after",                                                            selector: "#sibling-p2~\t\r\n#sibling-p3",                            expect: ["sibling-p3"],                   level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "General sibling combinator, whitespace before",                                                           selector: "#sibling-p2\t\r\n~#sibling-p3",                            expect: ["sibling-p3"],                   level: 3, testType: TEST_QSA | TEST_MATCH},
+  {name: "General sibling combinator, no whitespace",                                                               selector: "#sibling-p2~#sibling-p3",                                  expect: ["sibling-p3"],                   level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // Group of selectors (comma)
+  {name: "Syntax, group of selectors separator, surrounded by whitespace", selector: "#group em\t\r \n,\t\r \n#group strong", expect: ["group-em1", "group-strong1"], level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Syntax, group of selectors separator, whitespace after",         selector: "#group em,\t\r\n#group strong",         expect: ["group-em1", "group-strong1"], level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Syntax, group of selectors separator, whitespace before",        selector: "#group em\t\r\n,#group strong",         expect: ["group-em1", "group-strong1"], level: 1, testType: TEST_QSA | TEST_MATCH},
+  {name: "Syntax, group of selectors separator, no whitespace",            selector: "#group em,#group strong",               expect: ["group-em1", "group-strong1"], level: 1, testType: TEST_QSA | TEST_MATCH},
+
+  // ::slotted (shouldn't match anything, but is a valid selector)
+  {name: "Slotted selector", selector: "::slotted(foo)", expect: [], level: 3, testType: TEST_QSA},
+  {name: "Slotted selector (no matching closing paren)", selector: "::slotted(foo", expect: [], level: 3, testType: TEST_QSA},
+];
+
+
+/*
+ * These selectors are intended to be used with the find(), findAll() and matches() methods.  Expected results
+ * should be determined under the assumption that :scope will be prepended to the selector where appropriate,
+ * in accordance with the specification.
+ *
+ * All of these should be valid relative selectors, expected to match zero or more elements in the document.
+ * None should throw any errors.
+ *
+ *   name:      A descriptive name of the selector being tested
+ *
+ *   selector:  The selector to test
+ *
+ *   ctx:       A selector to obtain the context object to use for tests invoking context.find(),
+ *              and to use as a single reference node for tests invoking document.find().
+ *              Note: context = root.querySelector(ctx);
+ *
+ *   ref:       A selector to obtain the reference nodes to be used for the selector.
+ *              Note: If root is the document or an in-document element:
+ *                      refNodes = document.querySelectorAll(ref);
+ *                    Otherwise, if root is a fragment or detached element:
+ *                      refNodes = root.querySelectorAll(ref);
+ *
+ *   expect:    A list of IDs of the elements expected to be matched. List must be given in tree order.
+ *
+ *   unexpected: A list of IDs of some elements that are not expected to match the given selector.
+ *               This is used to verify that unexpected.matches(selector, refNode) does not match.
+ *
+ *   exclude:   An array of contexts to exclude from testing. The valid values are:
+ *              ["document", "element", "fragment", "detached", "html", "xhtml"]
+ *              The "html" and "xhtml" values represent the type of document being queried. These are useful
+ *              for tests that are affected by differences between HTML and XML, such as case sensitivity.
+ *
+ *   level:     An integer indicating the CSS or Selectors level in which the selector being tested was introduced.
+ *
+ *   testType:  A bit-mapped flag indicating the type of test.
+ *
+ * The test function for these tests accepts a specified root node, on which the methods will be invoked during the tests.
+ *
+ * Based on whether either 'context' or 'refNodes', or both, are specified the tests will execute the following methods:
+ *
+ * Where testType is TEST_FIND:
+ *
+ * context.findAll(selector, refNodes)
+ * context.findAll(selector)        // Only if refNodes is not specified
+ * root.findAll(selector, context)  // Only if refNodes is not specified
+ * root.findAll(selector, refNodes) // Only if context is not specified
+ * root.findAll(selector)           // Only if neither context nor refNodes is specified
+ *
+ * Where testType is TEST_QSA
+ *
+ * context.querySelectorAll(selector)
+ * root.querySelectorAll(selector)  // Only if neither context nor refNodes is specified
+ *
+ * Equivalent tests will be run for .find() as well.
+ * Note: Do not specify a testType of TEST_QSA where either implied :scope or explicit refNodes
+ * are required.
+ *
+ * Where testType is TEST_MATCH:
+ * For each expected result given, within the specified root:
+ *
+ * expect.matches(selector, context)    // Only where refNodes is not specified
+ * expect.matches(selector, refNodes)
+ * expect.matches(selector)             // Only if neither context nor refNodes is specified
+ *
+ * The tests involving refNodes for both find(), findAll() and matches() will each be run by passing the
+ * collection as a NodeList, an Array and, if there is only a single element, an Element node.
+ *
+ * Note: Interactive pseudo-classes (:active :hover and :focus) have not been tested in this test suite.
+ */
+
+var scopedSelectors = [
+  //{name: "", selector: "", ctx: "", ref: "", expect: [], level: 1, testType: TEST_FIND | TEST_MATCH},
+
+  // Attribute Selectors
+  // - presence                  [att]
+  {name: "Attribute presence selector, matching align attribute with value",                    selector: ".attr-presence-div1[align]",                             ctx: "#attr-presence", expect: ["attr-presence-div1"],                                             level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute presence selector, matching align attribute with empty value",              selector: ".attr-presence-div2[align]",                             ctx: "#attr-presence", expect: ["attr-presence-div2"],                                             level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute presence selector, matching title attribute, case insensitivity",           selector: "[TiTlE]",                                                ctx: "#attr-presence", expect: ["attr-presence-a1", "attr-presence-span1"], exclude: ["xhtml"],    level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute presence selector, not matching title attribute, case sensitivity",         selector: "[TiTlE]",                                                ctx: "#attr-presence", expect: [],                                          exclude: ["html"],     level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute presence selector, matching custom data-* attribute",                       selector: "[data-attr-presence]",                                   ctx: "#attr-presence", expect: ["attr-presence-pre1", "attr-presence-blockquote1"],                level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute presence selector, not matching attribute with similar name",               selector: ".attr-presence-div3[align], .attr-presence-div4[align]", ctx: "#attr-presence", expect: [] /*no matches*/,                                                  level: 2, testType: TEST_FIND},
+  {name: "Attribute presence selector, matching attribute with non-ASCII characters",           selector: "ul[data-中文]",                                            ctx: "#attr-presence", expect: ["attr-presence-ul1"],                                              level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute presence selector, not matching default option without selected attribute", selector: "#attr-presence-select1 option[selected]",                ctx: "#attr-presence", expect: [] /* no matches */,                                                level: 2, testType: TEST_FIND},
+  {name: "Attribute presence selector, matching option with selected attribute",                selector: "#attr-presence-select2 option[selected]",                ctx: "#attr-presence", expect: ["attr-presence-select2-option4"],                                  level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute presence selector, matching multiple options with selected attributes",     selector: "#attr-presence-select3 option[selected]",                ctx: "#attr-presence", expect: ["attr-presence-select3-option2", "attr-presence-select3-option3"], level: 2, testType: TEST_FIND | TEST_MATCH},
+
+  // - value                     [att=val]
+  {name: "Attribute value selector, matching align attribute with value",                                    selector: "[align=\"center\"]",                                     ctx: "#attr-value", expect: ["attr-value-div1"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute value selector, matching align attribute with empty value",                              selector: "[align=\"\"]",                                           ctx: "#attr-value", expect: ["attr-value-div2"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute value selector, not matching align attribute with partial value",                        selector: "[align=\"c\"]",                                          ctx: "#attr-value", expect: [] /*no matches*/,   level: 2, testType: TEST_FIND},
+  {name: "Attribute value selector, not matching align attribute with incorrect value",                      selector: "[align=\"centera\"]",                                    ctx: "#attr-value", expect: [] /*no matches*/,   level: 2, testType: TEST_FIND},
+  {name: "Attribute value selector, matching custom data-* attribute with unicode escaped value",            selector: "[data-attr-value=\"\\e9\"]",                             ctx: "#attr-value", expect: ["attr-value-div3"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute value selector, matching custom data-* attribute with escaped character",                selector: "[data-attr-value\_foo=\"\\e9\"]",                        ctx: "#attr-value", expect: ["attr-value-div4"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute value selector with single-quoted value, matching multiple inputs with type attributes", selector: "input[type='hidden'],#attr-value input[type='radio']",   ctx: "#attr-value", expect: ["attr-value-input3", "attr-value-input4", "attr-value-input6", "attr-value-input8", "attr-value-input9"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute value selector with double-quoted value, matching multiple inputs with type attributes", selector: "input[type=\"hidden\"],#attr-value input[type='radio']", ctx: "#attr-value", expect: ["attr-value-input3", "attr-value-input4", "attr-value-input6", "attr-value-input8", "attr-value-input9"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute value selector with unquoted value, matching multiple inputs with type attributes",      selector: "input[type=hidden],#attr-value input[type=radio]",       ctx: "#attr-value", expect: ["attr-value-input3", "attr-value-input4", "attr-value-input6", "attr-value-input8", "attr-value-input9"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute value selector, matching attribute with value using non-ASCII characters",               selector: "[data-attr-value=中文]",                                   ctx: "#attr-value", expect: ["attr-value-div5"], level: 2, testType: TEST_FIND | TEST_MATCH},
+
+  // - whitespace-separated list [att~=val]
+  {name: "Attribute whitespace-separated list selector, matching class attribute with value",                                  selector: "[class~=\"div1\"]",                                        ctx: "#attr-whitespace", expect: ["attr-whitespace-div1"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute whitespace-separated list selector, not matching class attribute with empty value",                        selector: "[class~=\"\"]",                                            ctx: "#attr-whitespace", expect: [] /*no matches*/ ,       level: 2, testType: TEST_FIND},
+  {name: "Attribute whitespace-separated list selector, not matching class attribute with partial value",                      selector: "[data-attr-whitespace~=\"div\"]",                                           ctx: "#attr-whitespace", expect: [] /*no matches*/ ,       level: 2, testType: TEST_FIND},
+  {name: "Attribute whitespace-separated list selector, matching custom data-* attribute with unicode escaped value",          selector: "[data-attr-whitespace~=\"\\0000e9\"]",                                      ctx: "#attr-whitespace", expect: ["attr-whitespace-div4"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute whitespace-separated list selector, matching custom data-* attribute with escaped character",              selector: "[data-attr-whitespace\_foo~=\"\\e9\"]",                                     ctx: "#attr-whitespace", expect: ["attr-whitespace-div5"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute whitespace-separated list selector with single-quoted value, matching multiple links with rel attributes", selector: "a[rel~='bookmark'],  #attr-whitespace a[rel~='nofollow']", ctx: "#attr-whitespace", expect: ["attr-whitespace-a1", "attr-whitespace-a2", "attr-whitespace-a3", "attr-whitespace-a5", "attr-whitespace-a7"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute whitespace-separated list selector with double-quoted value, matching multiple links with rel attributes", selector: "a[rel~=\"bookmark\"],#attr-whitespace a[rel~='nofollow']", ctx: "#attr-whitespace", expect: ["attr-whitespace-a1", "attr-whitespace-a2", "attr-whitespace-a3", "attr-whitespace-a5", "attr-whitespace-a7"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute whitespace-separated list selector with unquoted value, matching multiple links with rel attributes",      selector: "a[rel~=bookmark],    #attr-whitespace a[rel~=nofollow]",   ctx: "#attr-whitespace", expect: ["attr-whitespace-a1", "attr-whitespace-a2", "attr-whitespace-a3", "attr-whitespace-a5", "attr-whitespace-a7"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute whitespace-separated list selector with double-quoted value, not matching value with space",               selector: "a[rel~=\"book mark\"]",                                    ctx: "#attr-whitespace", expect: [] /* no matches */,      level: 2, testType: TEST_FIND},
+  {name: "Attribute whitespace-separated list selector, matching title attribute with value using non-ASCII characters",       selector: "[title~=中文]",                                              ctx: "#attr-whitespace", expect: ["attr-whitespace-p1"],   level: 2, testType: TEST_FIND | TEST_MATCH},
+
+  // - hyphen-separated list     [att|=val]
+  {name: "Attribute hyphen-separated list selector, not matching unspecified lang attribute",    selector: "#attr-hyphen-div1[lang|=\"en\"]",    ctx: "#attr-hyphen", expect: [] /*no matches*/,    level: 2, testType: TEST_FIND},
+  {name: "Attribute hyphen-separated list selector, matching lang attribute with exact value",   selector: "#attr-hyphen-div2[lang|=\"fr\"]",    ctx: "#attr-hyphen", expect: ["attr-hyphen-div2"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute hyphen-separated list selector, matching lang attribute with partial value", selector: "#attr-hyphen-div3[lang|=\"en\"]",    ctx: "#attr-hyphen", expect: ["attr-hyphen-div3"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute hyphen-separated list selector, not matching incorrect value",               selector: "#attr-hyphen-div4[lang|=\"es-AR\"]", ctx: "#attr-hyphen", expect: [] /*no matches*/,    level: 2, testType: TEST_FIND},
+
+  // - substring begins-with     [att^=val] (Level 3)
+  {name: "Attribute begins with selector, matching href attributes beginning with specified substring",                             selector: "a[href^=\"http://www\"]", ctx: "#attr-begins", expect: ["attr-begins-a1", "attr-begins-a3"],     level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute begins with selector, matching lang attributes beginning with specified substring, ",                           selector: "[lang^=\"en-\"]",         ctx: "#attr-begins", expect: ["attr-begins-div2", "attr-begins-div4"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute begins with selector, not matching class attribute with empty value",                                           selector: "[class^=\"\"]",          ctx: "#attr-begins", expect: [] /*no matches*/,                        level: 3, testType: TEST_FIND},
+  {name: "Attribute begins with selector, not matching class attribute not beginning with specified substring",                     selector: "[class^=apple]",          ctx: "#attr-begins", expect: [] /*no matches*/,                        level: 3, testType: TEST_FIND},
+  {name: "Attribute begins with selector with single-quoted value, matching class attribute beginning with specified substring",    selector: "[class^=' apple']",       ctx: "#attr-begins", expect: ["attr-begins-p1"],                       level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute begins with selector with double-quoted value, matching class attribute beginning with specified substring",    selector: "[class^=\" apple\"]",     ctx: "#attr-begins", expect: ["attr-begins-p1"],                       level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute begins with selector with unquoted value, not matching class attribute not beginning with specified substring", selector: "[class^= apple]",         ctx: "#attr-begins", expect: [] /*no matches*/,                        level: 3, testType: TEST_FIND},
+
+  // - substring ends-with       [att$=val] (Level 3)
+  {name: "Attribute ends with selector, matching href attributes ending with specified substring",                             selector: "a[href$=\".org\"]",   ctx: "#attr-ends", expect: ["attr-ends-a1", "attr-ends-a3"],     level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute ends with selector, matching lang attributes ending with specified substring, ",                           selector: "[lang$=\"-CH\"]",     ctx: "#attr-ends", expect: ["attr-ends-div2", "attr-ends-div4"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute ends with selector, not matching class attribute with empty value",                                        selector: "[class$=\"\"]",       ctx: "#attr-ends", expect: [] /*no matches*/,                    level: 3, testType: TEST_FIND},
+  {name: "Attribute ends with selector, not matching class attribute not ending with specified substring",                     selector: "[class$=apple]",      ctx: "#attr-ends", expect: [] /*no matches*/,                    level: 3, testType: TEST_FIND},
+  {name: "Attribute ends with selector with single-quoted value, matching class attribute ending with specified substring",    selector: "[class$='apple ']",   ctx: "#attr-ends", expect: ["attr-ends-p1"],                     level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute ends with selector with double-quoted value, matching class attribute ending with specified substring",    selector: "[class$=\"apple \"]", ctx: "#attr-ends", expect: ["attr-ends-p1"],                     level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute ends with selector with unquoted value, not matching class attribute not ending with specified substring", selector: "[class$=apple ]",     ctx: "#attr-ends", expect: [] /*no matches*/,                    level: 3, testType: TEST_FIND},
+
+  // - substring contains        [att*=val] (Level 3)
+  {name: "Attribute contains selector, matching href attributes beginning with specified substring",                          selector: "a[href*=\"http://www\"]",     ctx: "#attr-contains", expect: ["attr-contains-a1", "attr-contains-a3"],     level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute contains selector, matching href attributes ending with specified substring",                             selector: "a[href*=\".org\"]",           ctx: "#attr-contains", expect: ["attr-contains-a1", "attr-contains-a2"],     level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute contains selector, matching href attributes containing specified substring",                              selector: "a[href*=\".example.\"]",      ctx: "#attr-contains", expect: ["attr-contains-a1", "attr-contains-a3"],     level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute contains selector, matching lang attributes beginning with specified substring, ",                        selector: "[lang*=\"en-\"]",             ctx: "#attr-contains", expect: ["attr-contains-div2", "attr-contains-div6"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute contains selector, matching lang attributes ending with specified substring, ",                           selector: "[lang*=\"-CH\"]",             ctx: "#attr-contains", expect: ["attr-contains-div3", "attr-contains-div5"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute contains selector, not matching class attribute with empty value",                                        selector: "[class*=\"\"]",               ctx: "#attr-contains", expect: [] /*no matches*/,                            level: 3, testType: TEST_FIND},
+  {name: "Attribute contains selector with single-quoted value, matching class attribute beginning with specified substring", selector: "[class*=' apple']",           ctx: "#attr-contains", expect: ["attr-contains-p1"],                         level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute contains selector with single-quoted value, matching class attribute ending with specified substring",    selector: "[class*='orange ']",          ctx: "#attr-contains", expect: ["attr-contains-p1"],                         level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute contains selector with single-quoted value, matching class attribute containing specified substring",     selector: "[class*='ple banana ora']",   ctx: "#attr-contains", expect: ["attr-contains-p1"],                         level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute contains selector with double-quoted value, matching class attribute beginning with specified substring", selector: "[class*=\" apple\"]",         ctx: "#attr-contains", expect: ["attr-contains-p1"],                         level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute contains selector with double-quoted value, matching class attribute ending with specified substring",    selector: "[class*=\"orange \"]",        ctx: "#attr-contains", expect: ["attr-contains-p1"],                         level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute contains selector with double-quoted value, matching class attribute containing specified substring",     selector: "[class*=\"ple banana ora\"]", ctx: "#attr-contains", expect: ["attr-contains-p1"],                         level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute contains selector with unquoted value, matching class attribute beginning with specified substring",      selector: "[class*= apple]",             ctx: "#attr-contains", expect: ["attr-contains-p1"],                         level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute contains selector with unquoted value, matching class attribute ending with specified substring",         selector: "[class*=orange ]",            ctx: "#attr-contains", expect: ["attr-contains-p1"],                         level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "Attribute contains selector with unquoted value, matching class attribute containing specified substring",          selector: "[class*= banana ]",           ctx: "#attr-contains", expect: ["attr-contains-p1"],                         level: 3, testType: TEST_FIND | TEST_MATCH},
+
+  // Pseudo-classes
+  // - :root                 (Level 3)
+  {name: ":root pseudo-class selector, matching document root element",      selector: ":root",               expect: ["html"],          exclude: ["element", "fragment", "detached"], level: 3, testType: TEST_FIND},
+  {name: ":root pseudo-class selector, not matching document root element",  selector: ":root",               expect: [] /*no matches*/, exclude: ["document"],                        level: 3, testType: TEST_FIND},
+  {name: ":root pseudo-class selector, not matching document root element",  selector: ":root", ctx: "#html", expect: [] /*no matches*/, exclude: ["fragment", "detached"],            level: 3, testType: TEST_FIND},
+
+  // - :nth-child(n)         (Level 3)
+  {name: ":nth-child selector, matching the third child element",                                               selector: ":nth-child(3)",                    ctx: "#pseudo-nth-table1", expect: ["pseudo-nth-td3", "pseudo-nth-td9", "pseudo-nth-tr3", "pseudo-nth-td15"],             level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":nth-child selector, matching every third child element",                                             selector: "li:nth-child(3n)",                 ctx: "#pseudo-nth", expect: ["pseudo-nth-li3", "pseudo-nth-li6", "pseudo-nth-li9", "pseudo-nth-li12"],                    level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":nth-child selector, matching every second child element, starting from the fourth",                  selector: "li:nth-child(2n+4)",               ctx: "#pseudo-nth", expect: ["pseudo-nth-li4", "pseudo-nth-li6", "pseudo-nth-li8", "pseudo-nth-li10", "pseudo-nth-li12"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":nth-child selector, matching every second child element, starting from the fourth, with whitespace", selector: "li:nth-child(2n \t\r\n+ \t\r\n4)", ctx: "#pseudo-nth", expect: ["pseudo-nth-li4", "pseudo-nth-li6", "pseudo-nth-li8", "pseudo-nth-li10", "pseudo-nth-li12"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":nth-child selector, matching every fourth child element, starting from the third",                   selector: ":nth-child(4n-1)",                 ctx: "#pseudo-nth-p1", expect: ["pseudo-nth-em2", "pseudo-nth-span3"],                                                    level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":nth-child selector, matching every fourth child element, starting from the third, with whitespace",  selector: ":nth-child(4n \t\r\n- \t\r\n1)",   ctx: "#pseudo-nth-p1", expect: ["pseudo-nth-em2", "pseudo-nth-span3"],                                                    level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":nth-child selector used twice, matching ",                                                           selector: ":nth-child(1) :nth-child(1)",      ctx: "#pseudo-nth", expect: ["pseudo-nth-table1", "pseudo-nth-tr1"],                                                      level: 3, testType: TEST_FIND | TEST_MATCH},
+
+  // - :nth-last-child       (Level 3)
+  {name: ":nth-last-child selector, matching the third last child element",                                           selector: ":nth-last-child(3)",      ctx: "#pseudo-nth-table1", expect: ["pseudo-nth-tr1", "pseudo-nth-td4", "pseudo-nth-td10", "pseudo-nth-td16"],         level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":nth-last-child selector, matching every third child element from the end",                                 selector: "li:nth-last-child(3n)",   ctx: "pseudo-nth", expect: ["pseudo-nth-li1", "pseudo-nth-li4", "pseudo-nth-li7", "pseudo-nth-li10"],                  level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":nth-last-child selector, matching every second child element from the end, starting from the fourth last", selector: "li:nth-last-child(2n+4)", ctx: "pseudo-nth", expect: ["pseudo-nth-li1", "pseudo-nth-li3", "pseudo-nth-li5", "pseudo-nth-li7", "pseudo-nth-li9"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":nth-last-child selector, matching every fourth element from the end, starting from the third last",        selector: ":nth-last-child(4n-1)",   ctx: "#pseudo-nth-p1", expect: ["pseudo-nth-span2", "pseudo-nth-span4"],                                               level: 3, testType: TEST_FIND | TEST_MATCH},
+
+  // - :nth-of-type(n)       (Level 3)
+  {name: ":nth-of-type selector, matching the third em element",                                        selector: "em:nth-of-type(3)",      ctx: "#pseudo-nth-p1", expect: ["pseudo-nth-em3"],                                                                                 level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":nth-of-type selector, matching every second element of their type",                          selector: ":nth-of-type(2n)",       ctx: "#pseudo-nth-p1", expect: ["pseudo-nth-em2", "pseudo-nth-span2", "pseudo-nth-span4", "pseudo-nth-strong2", "pseudo-nth-em4"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":nth-of-type selector, matching every second elemetn of their type, starting from the first", selector: "span:nth-of-type(2n-1)", ctx: "#pseudo-nth-p1", expect: ["pseudo-nth-span1", "pseudo-nth-span3"],                                                           level: 3, testType: TEST_FIND | TEST_MATCH},
+
+  // - :nth-last-of-type(n)  (Level 3)
+  {name: ":nth-last-of-type selector, matching the third last em element",                                       selector: "em:nth-last-of-type(3)",      ctx: "#pseudo-nth-p1", expect: ["pseudo-nth-em2"],                                                                                 level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":nth-last-of-type selector, matching every second last element of their type",                         selector: ":nth-last-of-type(2n)",       ctx: "#pseudo-nth-p1", expect: ["pseudo-nth-span1", "pseudo-nth-em1", "pseudo-nth-strong1", "pseudo-nth-em3", "pseudo-nth-span3"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":nth-last-of-type selector, matching every second last element of their type, starting from the last", selector: "span:nth-last-of-type(2n-1)", ctx: "#pseudo-nth-p1", expect: ["pseudo-nth-span2", "pseudo-nth-span4"],                                                           level: 3, testType: TEST_FIND | TEST_MATCH},
+
+  // - :first-of-type        (Level 3)
+  {name: ":first-of-type selector, matching the first em element",                   selector: "em:first-of-type",  ctx: "#pseudo-nth-p1",     expect: ["pseudo-nth-em1"],                                           level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":first-of-type selector, matching the first of every type of element",     selector: ":first-of-type",    ctx: "#pseudo-nth-p1",     expect: ["pseudo-nth-span1", "pseudo-nth-em1", "pseudo-nth-strong1"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":first-of-type selector, matching the first td element in each table row", selector: "tr :first-of-type", ctx: "#pseudo-nth-table1", expect: ["pseudo-nth-td1", "pseudo-nth-td7", "pseudo-nth-td13"],      level: 3, testType: TEST_FIND | TEST_MATCH},
+
+  // - :last-of-type         (Level 3)
+  {name: ":last-of-type selector, matching the last em elemnet",                     selector: "em:last-of-type",   ctx: "#pseudo-nth-p1",     expect: ["pseudo-nth-em4"],                                           level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":last-of-type selector, matching the last of every type of element",       selector: ":last-of-type",     ctx: "#pseudo-nth-p1",     expect: ["pseudo-nth-span4", "pseudo-nth-strong2", "pseudo-nth-em4"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":last-of-type selector, matching the last td element in each table row",   selector: "tr :last-of-type",  ctx: "#pseudo-nth-table1", expect: ["pseudo-nth-td6", "pseudo-nth-td12", "pseudo-nth-td18"],     level: 3, testType: TEST_FIND | TEST_MATCH},
+
+  // - :first-child
+  {name: ":first-child pseudo-class selector, matching first child div element",          selector: "div:first-child",                                                            ctx: "#pseudo-first-child", expect: ["pseudo-first-child-div1"],                                                          level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: ":first-child pseudo-class selector, doesn't match non-first-child elements",    selector: ".pseudo-first-child-div2:first-child, .pseudo-first-child-div3:first-child", ctx: "#pseudo-first-child", expect: [] /*no matches*/,                                                                    level: 2, testType: TEST_FIND},
+  {name: ":first-child pseudo-class selector, matching first-child of multiple elements", selector: "span:first-child",                                                           ctx: "#pseudo-first-child", expect: ["pseudo-first-child-span1", "pseudo-first-child-span3", "pseudo-first-child-span5"], level: 2, testType: TEST_FIND | TEST_MATCH},
+
+  // - :last-child           (Level 3)
+  {name: ":last-child pseudo-class selector, matching last child div element",           selector: "div:last-child",                                                          ctx: "#pseudo-last-child", expect: ["pseudo-last-child-div3"],                                                        level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":last-child pseudo-class selector, doesn't match non-last-child elements",     selector: ".pseudo-last-child-div1:last-child, .pseudo-last-child-div2:first-child", ctx: "#pseudo-last-child", expect: [] /*no matches*/,                                                                 level: 3, testType: TEST_FIND},
+  {name: ":last-child pseudo-class selector, matching first-child of multiple elements", selector: "span:last-child",                                                         ctx: "#pseudo-last-child", expect: ["pseudo-last-child-span2", "pseudo-last-child-span4", "pseudo-last-child-span6"], level: 3, testType: TEST_FIND | TEST_MATCH},
+
+  // - :only-child           (Level 3)
+  {name: ":pseudo-only-child pseudo-class selector, matching all only-child elements", selector: ":only-child",   ctx: "#pseudo-only", expect: ["pseudo-only-span1"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":pseudo-only-child pseudo-class selector, matching only-child em elements",  selector: "em:only-child", ctx: "#pseudo-only", expect: [] /*no matches*/,     level: 3, testType: TEST_FIND},
+
+  // - :only-of-type         (Level 3)
+  {name: ":pseudo-only-of-type pseudo-class selector, matching all elements with no siblings of the same type", selector: " :only-of-type",   ctx: "#pseudo-only", expect: ["pseudo-only-span1", "pseudo-only-em1"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":pseudo-only-of-type pseudo-class selector, matching em elements with no siblings of the same type",  selector: " em:only-of-type", ctx: "#pseudo-only", expect: ["pseudo-only-em1"],                    level: 3, testType: TEST_FIND | TEST_MATCH},
+
+  // - :empty                (Level 3)
+  {name: ":empty pseudo-class selector, matching empty p elements",   selector: "p:empty", ctx: "#pseudo-empty", expect: ["pseudo-empty-p1", "pseudo-empty-p2"],                       level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":empty pseudo-class selector, matching all empty elements", selector: ":empty",  ctx: "#pseudo-empty", expect: ["pseudo-empty-p1", "pseudo-empty-p2", "pseudo-empty-span1"], level: 3, testType: TEST_FIND | TEST_MATCH},
+
+  // - :link and :visited
+  // Implementations may treat all visited links as unvisited, so these cannot be tested separately.
+  // The only guarantee is that ":link,:visited" matches the set of all visited and unvisited links and that they are individually mutually exclusive sets.
+  {name: ":link and :visited pseudo-class selectors, matching a and area elements with href attributes",        selector: " :link, #pseudo-link :visited", ctx: "#pseudo-link", expect: ["pseudo-link-a1", "pseudo-link-a2", "pseudo-link-area1"],                                level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: ":link and :visited pseudo-class selectors, matching no elements",                                     selector: " :link, #head :visited",        ctx: "#head",        expect: [] /*no matches*/,                          exclude: ["element", "fragment", "detached"], level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: ":link and :visited pseudo-class selectors, not matching link elements with href attributes",          selector: " :link, #head :visited",        ctx: "#head",        expect: [] /*no matches*/,                          exclude: ["document"],                        level: 1, testType: TEST_FIND},
+  {name: ":link and :visited pseudo-class selectors, chained, mutually exclusive pseudo-classes match nothing", selector: ":link:visited",                 ctx: "#html",        expect: [] /*no matches*/,                          exclude: ["document"],                        level: 1, testType: TEST_FIND},
+
+// XXX Figure out context or refNodes for this
+  // - :target               (Level 3)
+  {name: ":target pseudo-class selector, matching the element referenced by the URL fragment identifier", selector: ":target", ctx: "", expect: [] /*no matches*/, exclude: ["document", "element"],  level: 3, testType: TEST_FIND},
+  {name: ":target pseudo-class selector, matching the element referenced by the URL fragment identifier", selector: ":target", ctx: "", expect: ["target"],        exclude: ["fragment", "detached"], level: 3, testType: TEST_FIND},
+
+// XXX Fix ctx in tests below
+
+  // - :lang()
+  {name: ":lang pseudo-class selector, matching inherited language (1)",                     selector: "#pseudo-lang-div1:lang(en)",    ctx: "", expect: ["pseudo-lang-div1"], exclude: ["detached", "fragment"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: ":lang pseudo-class selector, not matching element with no inherited language", selector: "#pseudo-lang-div1:lang(en)",    ctx: "", expect: [] /*no matches*/,    exclude: ["document", "element"],  level: 2, testType: TEST_FIND},
+  {name: ":lang pseudo-class selector, matching specified language with exact value (1)",    selector: "#pseudo-lang-div2:lang(fr)",    ctx: "", expect: ["pseudo-lang-div2"],                                    level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: ":lang pseudo-class selector, matching specified language with partial value (1)",  selector: "#pseudo-lang-div3:lang(en)",    ctx: "", expect: ["pseudo-lang-div3"],                                    level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: ":lang pseudo-class selector, not matching incorrect language",                 selector: "#pseudo-lang-div4:lang(es-AR)", ctx: "", expect: [] /*no matches*/,                                       level: 2, testType: TEST_FIND},
+
+  // - :enabled              (Level 3)
+  {name: ":enabled pseudo-class selector, matching all enabled form controls (1)",  selector: "#pseudo-ui :enabled",  ctx: "", expect: ["pseudo-ui-input1", "pseudo-ui-input2", "pseudo-ui-input3", "pseudo-ui-input4", "pseudo-ui-input5", "pseudo-ui-input6",
+                                                                                                                           "pseudo-ui-input7", "pseudo-ui-input8", "pseudo-ui-input9", "pseudo-ui-textarea1", "pseudo-ui-button1"],    level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":enabled pseudo-class selector, not matching link elements (1)",  selector: "#pseudo-link :enabled",  ctx: "", expect: [] /*no matches*/, unexpected: ["pseudo-link-a1","pseudo-link-a2","pseudo-link-a3","pseudo-link-map1","pseudo-link-area1","pseudo-link-area2"],   level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // - :disabled             (Level 3)
+  {name: ":disabled pseudo-class selector, matching all disabled form controls (1)", selector: "#pseudo-ui :disabled", ctx: "", expect: ["pseudo-ui-input10", "pseudo-ui-input11", "pseudo-ui-input12", "pseudo-ui-input13", "pseudo-ui-input14", "pseudo-ui-input15",
+                                                                                                                           "pseudo-ui-input16", "pseudo-ui-input17", "pseudo-ui-input18", "pseudo-ui-textarea2", "pseudo-ui-button2"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":disabled pseudo-class selector, not matching link elements (1)", selector: "#pseudo-link :disabled", ctx: "", expect: [] /*no matches*/, unexpected: ["pseudo-link-a1","pseudo-link-a2","pseudo-link-a3","pseudo-link-map1","pseudo-link-area1","pseudo-link-area2"], level: 3, testType: TEST_QSA | TEST_MATCH},
+
+  // - :checked              (Level 3)
+  {name: ":checked pseudo-class selector, matching checked radio buttons and checkboxes (1)", selector: "#pseudo-ui :checked", ctx: "", expect: ["pseudo-ui-input4", "pseudo-ui-input6", "pseudo-ui-input13", "pseudo-ui-input15"],  level: 3, testType: TEST_FIND | TEST_MATCH},
+
+  // - :not(s)               (Level 3)
+  {name: ":not pseudo-class selector, matching (1)", selector: "#not>:not(div)",   ctx: "", expect: ["not-p1", "not-p2", "not-p3"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":not pseudo-class selector, matching (1)", selector: "#not * :not(:first-child)",   ctx: "", expect: ["not-em1", "not-em2", "not-em3"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: ":not pseudo-class selector, matching nothing", selector: ":not(*)",   ctx: "", expect: [] /* no matches */, level: 3, testType: TEST_FIND},
+  {name: ":not pseudo-class selector, matching nothing", selector: ":not(*|*)", ctx: "", expect: [] /* no matches */, level: 3, testType: TEST_FIND},
+
+  // Pseudo-elements
+  // - ::first-line
+  {name: ":first-line pseudo-element (one-colon syntax) selector, not matching any elements",    selector: "#pseudo-element:first-line",    ctx: "", expect: [] /*no matches*/, level: 2, testType: TEST_FIND},
+  {name: "::first-line pseudo-element (two-colon syntax) selector, not matching any elements",   selector: "#pseudo-element::first-line",   ctx: "", expect: [] /*no matches*/, level: 3, testType: TEST_FIND},
+
+  // - ::first-letter
+  {name: ":first-letter pseudo-element (one-colon syntax) selector, not matching any elements",  selector: "#pseudo-element:first-letter",  ctx: "", expect: [] /*no matches*/, level: 2, testType: TEST_FIND},
+  {name: "::first-letter pseudo-element (two-colon syntax) selector, not matching any elements", selector: "#pseudo-element::first-letter", ctx: "", expect: [] /*no matches*/, level: 3, testType: TEST_FIND},
+
+  // - ::before
+  {name: ":before pseudo-element (one-colon syntax) selector, not matching any elements",        selector: "#pseudo-element:before",        ctx: "", expect: [] /*no matches*/, level: 2, testType: TEST_FIND},
+  {name: "::before pseudo-element (two-colon syntax) selector, not matching any elements",       selector: "#pseudo-element::before",       ctx: "", expect: [] /*no matches*/, level: 3, testType: TEST_FIND},
+
+  // - ::after
+  {name: ":after pseudo-element (one-colon syntax) selector, not matching any elements",         selector: "#pseudo-element:after",         ctx: "", expect: [] /*no matches*/, level: 2, testType: TEST_FIND},
+  {name: "::after pseudo-element (two-colon syntax) selector, not matching any elements",        selector: "#pseudo-element::after",        ctx: "", expect: [] /*no matches*/, level: 3, testType: TEST_FIND},
+
+  // Class Selectors
+  {name: "Class selector, matching element with specified class (1)",                                           selector: ".class-p",                ctx: "", expect: ["class-p1","class-p2", "class-p3"],                                              level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Class selector, chained, matching only elements with all specified classes (1)",                      selector: "#class .apple.orange.banana",    ctx: "", expect: ["class-div1", "class-div2", "class-p4", "class-div3", "class-p6", "class-div4"], level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Class Selector, chained, with type selector (1)",                                                     selector: "div.apple.banana.orange", ctx: "", expect: ["class-div1", "class-div2", "class-div3", "class-div4"],                         level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Class selector, matching element with class value using non-ASCII characters (2)",                    selector: ".\u53F0\u5317Ta\u0301ibe\u030Ci",             ctx: "", expect: ["class-span1"],               level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Class selector, matching multiple elements with class value using non-ASCII characters (1)",          selector: ".\u53F0\u5317",                     ctx: "", expect: ["class-span1","class-span2"], level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Class selector, chained, matching element with multiple class values using non-ASCII characters (2)", selector: ".\u53F0\u5317Ta\u0301ibe\u030Ci.\u53F0\u5317",          ctx: "", expect: ["class-span1"],               level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Class selector, matching element with class with escaped character (1)",                              selector: ".foo\\:bar",              ctx: "", expect: ["class-span3"],               level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Class selector, matching element with class with escaped character (1)",                              selector: ".test\\.foo\\[5\\]bar",   ctx: "", expect: ["class-span4"],               level: 1, testType: TEST_FIND | TEST_MATCH},
+
+  // ID Selectors
+  {name: "ID selector, matching element with specified id (1)",           selector: "#id #id-div1",              ctx: "", expect: ["id-div1"],            level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "ID selector, chained, matching element with specified id (1)",  selector: "#id-div1, #id-div1",        ctx: "", expect: ["id-div1"],            level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "ID selector, chained, matching element with specified id (1)",  selector: "#id-div1, #id-div2",        ctx: "", expect: ["id-div1", "id-div2"], level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "ID Selector, chained, with type selector (1)",                  selector: "div#id-div1, div#id-div2",  ctx: "", expect: ["id-div1", "id-div2"], level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "ID selector, not matching non-existent descendant",         selector: "#id #none",                 ctx: "", expect: [] /*no matches*/,      level: 1, testType: TEST_FIND},
+  {name: "ID selector, not matching non-existent ancestor",           selector: "#none #id-div1",            ctx: "", expect: [] /*no matches*/,      level: 1, testType: TEST_FIND},
+  {name: "ID selector, matching multiple elements with duplicate id (1)", selector: "#id-li-duplicate",          ctx: "", expect: ["id-li-duplicate", "id-li-duplicate", "id-li-duplicate", "id-li-duplicate"], level: 1, testType: TEST_FIND | TEST_MATCH},
+
+  {name: "ID selector, matching id value using non-ASCII characters (3)",    selector: "#\u53F0\u5317Ta\u0301ibe\u030Ci",           ctx: "", expect: ["\u53F0\u5317Ta\u0301ibe\u030Ci"],       level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "ID selector, matching id value using non-ASCII characters (4)",    selector: "#\u53F0\u5317",                   ctx: "", expect: ["\u53F0\u5317"],               level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "ID selector, matching id values using non-ASCII characters (2)",   selector: "#\u53F0\u5317Ta\u0301ibe\u030Ci, #\u53F0\u5317",      ctx: "", expect: ["\u53F0\u5317Ta\u0301ibe\u030Ci", "\u53F0\u5317"], level: 1, testType: TEST_FIND | TEST_MATCH},
+
+  // XXX runMatchesTest() in level2-lib.js can't handle this because obtaining the expected nodes requires escaping characters when generating the selector from 'expect' values
+  {name: "ID selector, matching element with id with escaped character", selector: "#\\#foo\\:bar",         ctx: "", expect: ["#foo:bar"],         level: 1, testType: TEST_FIND},
+  {name: "ID selector, matching element with id with escaped character", selector: "#test\\.foo\\[5\\]bar", ctx: "", expect: ["test.foo[5]bar"],   level: 1, testType: TEST_FIND},
+
+  // Namespaces
+  // XXX runMatchesTest() in level2-lib.js can't handle these because non-HTML elements don't have a recognised id
+  {name: "Namespace selector, matching element with any namespace",        selector: "#any-namespace *|div", ctx: "", expect: ["any-namespace-div1", "any-namespace-div2", "any-namespace-div3", "any-namespace-div4"], level: 3, testType: TEST_FIND},
+  {name: "Namespace selector, matching div elements in no namespace only", selector: "#no-namespace |div",   ctx: "", expect: ["no-namespace-div3"], level: 3, testType: TEST_FIND},
+  {name: "Namespace selector, matching any elements in no namespace only", selector: "#no-namespace |*",     ctx: "", expect: ["no-namespace-div3"], level: 3, testType: TEST_FIND},
+
+  // Combinators
+  // - Descendant combinator ' '
+  {name: "Descendant combinator, matching element that is a descendant of an element with id (1)",                 selector: "#descendant div",                   ctx: "", expect: ["descendant-div1", "descendant-div2", "descendant-div3", "descendant-div4"], level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Descendant combinator, matching element with id that is a descendant of an element (1)",                 selector: "body #descendant-div1",             ctx: "", expect: ["descendant-div1"], exclude: ["detached", "fragment"], level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Descendant combinator, matching element with id that is a descendant of an element (1)",                 selector: "div #descendant-div1",              ctx: "", expect: ["descendant-div1"],                                    level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Descendant combinator, matching element with id that is a descendant of an element with id (1)",         selector: "#descendant #descendant-div2",      ctx: "", expect: ["descendant-div2"],                                    level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Descendant combinator, matching element with class that is a descendant of an element with id (1)",      selector: "#descendant .descendant-div2",      ctx: "", expect: ["descendant-div2"],                                    level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Descendant combinator, matching element with class that is a descendant of an element with class (1)",   selector: ".descendant-div1 .descendant-div3", ctx: "", expect: ["descendant-div3"],                                    level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Descendant combinator, not matching element with id that is not a descendant of an element with id", selector: "#descendant-div1 #descendant-div4", ctx: "", expect: [] /*no matches*/,                                      level: 1, testType: TEST_FIND},
+  {name: "Descendant combinator, whitespace characters (1)",                                                       selector: "#descendant\t\r\n#descendant-div2", ctx: "", expect: ["descendant-div2"],                                    level: 1, testType: TEST_FIND | TEST_MATCH},
+
+  // // - Descendant combinator '>>'
+  // {name: "Descendant combinator '>>', matching element that is a descendant of an element with id (1)",                 selector: "#descendant>>div",                   ctx: "", expect: ["descendant-div1", "descendant-div2", "descendant-div3", "descendant-div4"], level: 1, testType: TEST_FIND | TEST_MATCH},
+  // {name: "Descendant combinator '>>', matching element with id that is a descendant of an element (1)",                 selector: "body>>#descendant-div1",             ctx: "", expect: ["descendant-div1"], exclude: ["detached", "fragment"], level: 1, testType: TEST_FIND | TEST_MATCH},
+  // {name: "Descendant combinator '>>', matching element with id that is a descendant of an element (1)",                 selector: "div>>#descendant-div1",              ctx: "", expect: ["descendant-div1"],                                    level: 1, testType: TEST_FIND | TEST_MATCH},
+  // {name: "Descendant combinator '>>', matching element with id that is a descendant of an element with id (1)",         selector: "#descendant>>#descendant-div2",      ctx: "", expect: ["descendant-div2"],                                    level: 1, testType: TEST_FIND | TEST_MATCH},
+  // {name: "Descendant combinator '>>', matching element with class that is a descendant of an element with id (1)",      selector: "#descendant>>.descendant-div2",      ctx: "", expect: ["descendant-div2"],                                    level: 1, testType: TEST_FIND | TEST_MATCH},
+  // {name: "Descendant combinator, '>>', matching element with class that is a descendant of an element with class (1)",   selector: ".descendant-div1>>.descendant-div3", ctx: "", expect: ["descendant-div3"],                                    level: 1, testType: TEST_FIND | TEST_MATCH},
+  // {name: "Descendant combinator '>>', not matching element with id that is not a descendant of an element with id", selector: "#descendant-div1>>#descendant-div4", ctx: "", expect: [] /*no matches*/,                                      level: 1, testType: TEST_FIND},
+
+  // - Child combinator '>'
+  {name: "Child combinator, matching element that is a child of an element with id (1)",                       selector: "#child>div",                          ctx: "", expect: ["child-div1", "child-div4"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Child combinator, matching element with id that is a child of an element (1)",                       selector: "div>#child-div1",                     ctx: "", expect: ["child-div1"],               level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Child combinator, matching element with id that is a child of an element with id (1)",               selector: "#child>#child-div1",                  ctx: "", expect: ["child-div1"],               level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Child combinator, matching element with id that is a child of an element with class (1)",            selector: "#child-div1>.child-div2",             ctx: "", expect: ["child-div2"],               level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Child combinator, matching element with class that is a child of an element with class (1)",         selector: ".child-div1>.child-div2",             ctx: "", expect: ["child-div2"],               level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Child combinator, not matching element with id that is not a child of an element with id",       selector: "#child>#child-div3",                  ctx: "", expect: [] /*no matches*/,            level: 2, testType: TEST_FIND},
+  {name: "Child combinator, not matching element with id that is not a child of an element with class",    selector: "#child-div1>.child-div3",             ctx: "", expect: [] /*no matches*/,            level: 2, testType: TEST_FIND},
+  {name: "Child combinator, not matching element with class that is not a child of an element with class", selector: ".child-div1>.child-div3",             ctx: "", expect: [] /*no matches*/,            level: 2, testType: TEST_FIND},
+  {name: "Child combinator, surrounded by whitespace (1)",                                                     selector: "#child-div1\t\r\n>\t\r\n#child-div2", ctx: "", expect: ["child-div2"],               level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Child combinator, whitespace after (1)",                                                             selector: "#child-div1>\t\r\n#child-div2",       ctx: "", expect: ["child-div2"],               level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Child combinator, whitespace before (1)",                                                            selector: "#child-div1\t\r\n>#child-div2",       ctx: "", expect: ["child-div2"],               level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Child combinator, no whitespace (1)",                                                                selector: "#child-div1>#child-div2",             ctx: "", expect: ["child-div2"],               level: 2, testType: TEST_FIND | TEST_MATCH},
+
+  // - Adjacent sibling combinator '+'
+  {name: "Adjacent sibling combinator, matching element that is an adjacent sibling of an element with id (1)",                 selector: "#adjacent-div2+div",                                         ctx: "", expect: ["adjacent-div4"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Adjacent sibling combinator, matching element with id that is an adjacent sibling of an element (1)",                 selector: "div+#adjacent-div4",                                         ctx: "", expect: ["adjacent-div4"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Adjacent sibling combinator, matching element with id that is an adjacent sibling of an element with id (1)",         selector: "#adjacent-div2+#adjacent-div4",                              ctx: "", expect: ["adjacent-div4"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Adjacent sibling combinator, matching element with class that is an adjacent sibling of an element with id (1)",      selector: "#adjacent-div2+.adjacent-div4",                              ctx: "", expect: ["adjacent-div4"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Adjacent sibling combinator, matching element with class that is an adjacent sibling of an element with class (1)",   selector: ".adjacent-div2+.adjacent-div4",                              ctx: "", expect: ["adjacent-div4"], level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Adjacent sibling combinator, matching p element that is an adjacent sibling of a div element (1)",                    selector: "#adjacent div+p",                                            ctx: "", expect: ["adjacent-p2"],   level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Adjacent sibling combinator, not matching element with id that is not an adjacent sibling of an element with id", selector: "#adjacent-div2+#adjacent-p2, #adjacent-div2+#adjacent-div1", ctx: "", expect: [] /*no matches*/, level: 2, testType: TEST_FIND},
+  {name: "Adjacent sibling combinator, surrounded by whitespace (1)",                                                           selector: "#adjacent-p2\t\r\n+\t\r\n#adjacent-p3",                      ctx: "", expect: ["adjacent-p3"],   level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Adjacent sibling combinator, whitespace after (1)",                                                                   selector: "#adjacent-p2+\t\r\n#adjacent-p3",                            ctx: "", expect: ["adjacent-p3"],   level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Adjacent sibling combinator, whitespace before (1)",                                                                  selector: "#adjacent-p2\t\r\n+#adjacent-p3",                            ctx: "", expect: ["adjacent-p3"],   level: 2, testType: TEST_FIND | TEST_MATCH},
+  {name: "Adjacent sibling combinator, no whitespace (1)",                                                                      selector: "#adjacent-p2+#adjacent-p3",                                  ctx: "", expect: ["adjacent-p3"],   level: 2, testType: TEST_FIND | TEST_MATCH},
+
+  // - General sibling combinator ~ (Level 3)
+  {name: "General sibling combinator, matching element that is a sibling of an element with id (1)",                    selector: "#sibling-div2~div",                                        ctx: "", expect: ["sibling-div4", "sibling-div6"], level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "General sibling combinator, matching element with id that is a sibling of an element (1)",                    selector: "div~#sibling-div4",                                        ctx: "", expect: ["sibling-div4"],                 level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "General sibling combinator, matching element with id that is a sibling of an element with id (1)",            selector: "#sibling-div2~#sibling-div4",                              ctx: "", expect: ["sibling-div4"],                 level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "General sibling combinator, matching element with class that is a sibling of an element with id (1)",         selector: "#sibling-div2~.sibling-div",                               ctx: "", expect: ["sibling-div4", "sibling-div6"],                 level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "General sibling combinator, matching p element that is a sibling of a div element (1)",                       selector: "#sibling div~p",                                           ctx: "", expect: ["sibling-p2", "sibling-p3"],                   level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "General sibling combinator, not matching element with id that is not a sibling after a p element (1)",        selector: "#sibling>p~div",                                           ctx: "", expect: [] /*no matches*/,                level: 3, testType: TEST_FIND},
+  {name: "General sibling combinator, not matching element with id that is not a sibling after an element with id", selector: "#sibling-div2~#sibling-div3, #sibling-div2~#sibling-div1", ctx: "", expect: [] /*no matches*/,                level: 3, testType: TEST_FIND},
+  {name: "General sibling combinator, surrounded by whitespace (1)",                                                    selector: "#sibling-p2\t\r\n~\t\r\n#sibling-p3",                      ctx: "", expect: ["sibling-p3"],                   level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "General sibling combinator, whitespace after (1)",                                                            selector: "#sibling-p2~\t\r\n#sibling-p3",                            ctx: "", expect: ["sibling-p3"],                   level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "General sibling combinator, whitespace before (1)",                                                           selector: "#sibling-p2\t\r\n~#sibling-p3",                            ctx: "", expect: ["sibling-p3"],                   level: 3, testType: TEST_FIND | TEST_MATCH},
+  {name: "General sibling combinator, no whitespace (1)",                                                               selector: "#sibling-p2~#sibling-p3",                                  ctx: "", expect: ["sibling-p3"],                   level: 3, testType: TEST_FIND | TEST_MATCH},
+
+  // Group of selectors (comma)
+  {name: "Syntax, group of selectors separator, surrounded by whitespace (1)", selector: "#group em\t\r \n,\t\r \n#group strong", ctx: "", expect: ["group-em1", "group-strong1"], level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Syntax, group of selectors separator, whitespace after (1)",         selector: "#group em,\t\r\n#group strong",         ctx: "", expect: ["group-em1", "group-strong1"], level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Syntax, group of selectors separator, whitespace before (1)",        selector: "#group em\t\r\n,#group strong",         ctx: "", expect: ["group-em1", "group-strong1"], level: 1, testType: TEST_FIND | TEST_MATCH},
+  {name: "Syntax, group of selectors separator, no whitespace (1)",            selector: "#group em,#group strong",               ctx: "", expect: ["group-em1", "group-strong1"], level: 1, testType: TEST_FIND | TEST_MATCH},
+];
diff --git a/tests/wpt/dom/nodes/support/NodeList-static-length-tampered.js b/tests/wpt/dom/nodes/support/NodeList-static-length-tampered.js
new file mode 100644
index 00000000..51167e2d
--- /dev/null
+++ b/tests/wpt/dom/nodes/support/NodeList-static-length-tampered.js
@@ -0,0 +1,46 @@
+"use strict";
+
+function makeStaticNodeList(length) {
+    const fooRoot = document.createElement("div");
+
+    for (var i = 0; i < length; i++) {
+        const el = document.createElement("span");
+        el.className = "foo";
+        fooRoot.append(el);
+    }
+
+    document.body.append(fooRoot);
+    return fooRoot.querySelectorAll(".foo");
+}
+
+const indexOfNodeList = new Function("nodeList", `
+    const __cacheBust = ${Math.random()};
+
+    const el = nodeList[50];
+
+    let index = -1;
+
+    for (var i = 0; i < 1e5 / 2; i++) {
+        for (var j = 0; j < nodeList.length; j++) {
+            if (nodeList[j] === el) {
+                index = j;
+                break;
+            }
+        }
+    }
+
+    return index;
+`);
+
+const arrayIndexOfNodeList = new Function("nodeList", `
+    const __cacheBust = ${Math.random()};
+
+    const el = nodeList[50];
+    const {indexOf} = Array.prototype;
+
+    for (var i = 0; i < 1e5; i++) {
+        var index = indexOf.call(nodeList, el);
+    }
+
+    return index;
+`);