third_party/web_platform_tests/webmessaging/with-ports/026.html - cobalt - Git at Google

 <!doctype html>
 <title>object with length as transferable</title>
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <div id=log></div>
 <script>
 test(function() {
    assert_throws(new TypeError(), function() {
       postMessage('', '*', {length:1});
    });
 });
 </script>
	<!doctype html>
	<title>object with length as transferable</title>
	<script src="/resources/testharness.js"></script>
	<script src="/resources/testharnessreport.js"></script>
	<div id=log></div>
	<script>
	test(function() {
	assert_throws(new TypeError(), function() {
	postMessage('', '*', {length:1});
	});
	});
	</script>