diff --git a/src/cdp/domains/page.zig b/src/cdp/domains/page.zig
index a76fb716..1dd7f75b 100644
--- a/src/cdp/domains/page.zig
+++ b/src/cdp/domains/page.zig
@@ -159,6 +159,10 @@ fn addScriptToEvaluateOnNewDocument(cmd: anytype) !void {
 
     const bc = cmd.browser_context orelse return error.BrowserContextNotLoaded;
 
+    if (params.runImmediately) {
+        log.warn(.not_implemented, "addScriptOnNewDocument", .{ .param = "runImmediately" });
+    }
+
     const script_id = bc.next_script_id;
     bc.next_script_id += 1;
 
@@ -191,7 +195,6 @@ fn removeScriptToEvaluateOnNewDocument(cmd: anytype) !void {
             break;
         }
     }
-
     return cmd.sendResult(null, .{});
 }
 
@@ -524,8 +527,13 @@ pub fn pageNavigated(arena: Allocator, bc: anytype, event: *const Notification.P
         defer ls.deinit();
 
         for (bc.scripts_on_new_document.items) |script| {
+            var try_catch: lp.js.TryCatch = undefined;
+            try_catch.init(&ls.local);
+            defer try_catch.deinit();
+
             ls.local.eval(script.source, null) catch |err| {
-                log.warn(.cdp, "script on new doc failed", .{ .err = err });
+                const caught = try_catch.caughtOrError(arena, err);
+                log.warn(.cdp, "script on new doc", .{ .caught = caught });
             };
         }
     }
@@ -893,7 +901,7 @@ test "cdp.page: addScriptToEvaluateOnNewDocument" {
     var ctx = try testing.context();
     defer ctx.deinit();
 
-    _ = try ctx.loadBrowserContext(.{ .id = "BID-9", .url = "hi.html", .target_id = "FID-000000000X".* });
+    var bc = try ctx.loadBrowserContext(.{ .id = "BID-9", .url = "hi.html", .target_id = "FID-000000000X".* });
 
     {
         // Register a script — should return unique identifier "1"
@@ -922,4 +930,22 @@ test "cdp.page: addScriptToEvaluateOnNewDocument" {
         try ctx.processMessage(.{ .id = 23, .method = "Page.removeScriptToEvaluateOnNewDocument", .params = .{ .identifier = "999" } });
         try ctx.expectSentResult(null, .{ .id = 23 });
     }
+
+    {
+        try ctx.processMessage(.{ .id = 34, .method = "Page.reload" });
+        // wait for this event, which is sent after we've run the registered scripts
+        try ctx.expectSentEvent("Page.frameNavigated", .{
+            .frame = .{.loaderId = "LID-0000000002"},
+        }, .{});
+
+        const page = bc.session.currentPage() orelse unreachable;
+
+        var ls: js.Local.Scope = undefined;
+        page.js.localScope(&ls);
+        defer ls.deinit();
+
+        const test_val = try ls.local.exec("window.__test2", null);
+        try testing.expectEqual(2, try test_val.toI32());
+    }
+
 }
diff --git a/src/cdp/testing.zig b/src/cdp/testing.zig
index 87639a6c..9d420bca 100644
--- a/src/cdp/testing.zig
+++ b/src/cdp/testing.zig
@@ -172,13 +172,26 @@ const TestContext = struct {
         index: ?usize = null,
     };
     pub fn expectSent(self: *TestContext, expected: anytype, opts: SentOpts) !void {
-        const serialized = try json.Stringify.valueAlloc(base.arena_allocator, expected, .{
-            .whitespace = .indent_2,
-            .emit_null_optional_fields = false,
-        });
+        const expected_json = blk: {
+            // Zig makes this hard. When sendJSON is called, we're sending an anytype.
+            // We can't record that in an ArrayList(???), so we serialize it to JSON.
+            // Now, ideally, we could just take our expected structure, serialize it to
+            // json and check if the two are equal.
+            // Except serializing to JSON isn't deterministic.
+            // So we serialize the JSON then we deserialize to json.Value. And then we can
+            // compare our anytype expectation with the json.Value that we captured
+
+            const serialized = try json.Stringify.valueAlloc(base.arena_allocator, expected, .{
+                .whitespace = .indent_2,
+                .emit_null_optional_fields = false,
+            });
+
+            break :blk try std.json.parseFromSliceLeaky(json.Value, base.arena_allocator, serialized, .{});
+        };
+
         for (0..5) |_| {
             for (self.received.items, 0..) |received, i| {
-                if (try compareExpectedToSent(serialized, received) == false) {
+                if (try base.isEqualJson(expected_json, received) == false) {
                     continue;
                 }
 
@@ -191,6 +204,15 @@ const TestContext = struct {
                 }
                 return;
             }
+
+            if (self.cdp_) |*cdp__| {
+                if (cdp__.browser_context) |*bc| {
+                    if (bc.session.page != null) {
+                        var runner = try bc.session.runner(.{});
+                        _ = try runner.tick(.{.ms = 1000});
+                    }
+                }
+            }
             std.Thread.sleep(5 * std.time.ns_per_ms);
             try self.read();
         }
@@ -303,17 +325,3 @@ pub fn context() !TestContext {
         .socket = pair[0],
     };
 }
-
-// Zig makes this hard. When sendJSON is called, we're sending an anytype.
-// We can't record that in an ArrayList(???), so we serialize it to JSON.
-// Now, ideally, we could just take our expected structure, serialize it to
-// json and check if the two are equal.
-// Except serializing to JSON isn't deterministic.
-// So we serialize the JSON then we deserialize to json.Value. And then we can
-// compare our anytype expectation with the json.Value that we captured
-
-fn compareExpectedToSent(expected: []const u8, actual: json.Value) !bool {
-    const expected_value = try std.json.parseFromSlice(json.Value, std.testing.allocator, expected, .{});
-    defer expected_value.deinit();
-    return base.isEqualJson(expected_value.value, actual);
-}