LayoutTests/performance-api/performance-observer-exception.html - WebKit - Git at Google

 <!DOCTYPE HTML>
 <html>
 <head>
 <script src="../resources/js-test-pre.js"></script>
 </head>
 <body>
 <script>
 description("Ensure PerformanceObserver Exceptions are propogated.");
 window.jsTestIsAsync = true;

 let seenExceptions = 0;

 window.onerror = function(message) {
     testPassed("onerror: " + message);

     seenExceptions++;
     if (seenExceptions === 2)
         finishJSTest();
 }

 let observer1 = new PerformanceObserver((list) => {
     debug("PerformanceObserver callback fired");
     throw "EXCEPTION MESSAGE IN CALLBACK";
 });

 class MyObserver {};
 let observer2 = new PerformanceObserver(MyObserver);

 observer1.observe({entryTypes: ["mark"]});
 observer2.observe({entryTypes: ["mark"]});
 performance.mark("mark1");
 </script>
 <script src="../resources/js-test-post.js"></script>
 </body>
 </html>
	<!DOCTYPE HTML>
	<html>
	<head>
	<script src="../resources/js-test-pre.js"></script>
	</head>
	<body>
	<script>
	description("Ensure PerformanceObserver Exceptions are propogated.");
	window.jsTestIsAsync = true;

	let seenExceptions = 0;

	window.onerror = function(message) {
	testPassed("onerror: " + message);

	seenExceptions++;
	if (seenExceptions === 2)
	finishJSTest();
	}

	let observer1 = new PerformanceObserver((list) => {
	debug("PerformanceObserver callback fired");
	throw "EXCEPTION MESSAGE IN CALLBACK";
	});

	class MyObserver {};
	let observer2 = new PerformanceObserver(MyObserver);

	observer1.observe({entryTypes: ["mark"]});
	observer2.observe({entryTypes: ["mark"]});
	performance.mark("mark1");
	</script>
	<script src="../resources/js-test-post.js"></script>
	</body>
	</html>