add wpt tests

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;
+`);