resize-observer/callback-cross-realm-report-exception.html - external/github.com/web-platform-tests/wpt - Git at Google

 <!doctype html>
 <meta charset=utf-8>
 <title>ResizeObserver reports the exception from its callback in the callback's global object</title>
 <script src=/resources/testharness.js></script>
 <script src=/resources/testharnessreport.js></script>
 <iframe srcdoc='<div style="height: 100px;">foo</div>'></iframe>
 <iframe></iframe>
 <iframe></iframe>
 <script>
 setup({ allow_uncaught_exception: true });

 const onerrorCalls = [];
 window.onerror = () => { onerrorCalls.push("top"); };
 frames[0].onerror = () => { onerrorCalls.push("frame0"); };
 frames[1].onerror = () => { onerrorCalls.push("frame1"); };
 frames[2].onerror = () => { onerrorCalls.push("frame2"); };

 async_test(t => {
   window.onload = t.step_func(() => {
     const target = frames[0].document.querySelector("div");
     const io = new frames[0].ResizeObserver(new frames[1].Function(`throw new parent.frames[2].Error("PASS");`));
     io.observe(target);

     t.step_timeout(() => {
       assert_array_equals(onerrorCalls, ["frame1"]);
       t.done();
     }, 25);
   });
 });
 </script>
	<!doctype html>
	<meta charset=utf-8>
	<title>ResizeObserver reports the exception from its callback in the callback's global object</title>
	<script src=/resources/testharness.js></script>
	<script src=/resources/testharnessreport.js></script>
	<iframe srcdoc='<div style="height: 100px;">foo</div>'></iframe>
	<iframe></iframe>
	<iframe></iframe>
	<script>
	setup({ allow_uncaught_exception: true });

	const onerrorCalls = [];
	window.onerror = () => { onerrorCalls.push("top"); };
	frames[0].onerror = () => { onerrorCalls.push("frame0"); };
	frames[1].onerror = () => { onerrorCalls.push("frame1"); };
	frames[2].onerror = () => { onerrorCalls.push("frame2"); };

	async_test(t => {
	window.onload = t.step_func(() => {
	const target = frames[0].document.querySelector("div");
	const io = new frames[0].ResizeObserver(new frames[1].Function(`throw new parent.frames[2].Error("PASS");`));
	io.observe(target);

	t.step_timeout(() => {
	assert_array_equals(onerrorCalls, ["frame1"]);
	t.done();
	}, 25);
	});
	});
	</script>