LayoutTests/webaudio/resume-context-while-running.html - WebKit - Git at Google

 <!DOCTYPE html>
 <html>
 <body>
 <script src="../resources/js-test.js"></script>
 <script>
 description("Tests that calling AudioContext.resume() while already running resolves the promise.");
 jsTestIsAsync = true;

 function didStartRendering()
 {
     context.onstatechange = null;
     testPassed("Did start rendering");
     shouldBeEqualToString("context.state", "running");
     context.resume().then(() => {
         testPassed("Calling resume() while running resolved the promise");
         shouldBeEqualToString("context.state", "running");
         context.resume().then(() => {
             testPassed("Calling resume() while running resolved the promise");
             shouldBeEqualToString("context.state", "running");
             finishJSTest();
         }, (e) => {
             testFailed("Second call to context.resume() unexpectedly threw an exception: " + e);
             finishJSTest();
         });
     }, (e) => {
         testFailed("First call to context.resume() unexpectedly threw an exception: " + e);
         finishJSTest();
     });
 }

 let context = new AudioContext;
 var source = context.createConstantSource();
 source.connect(context.destination);

 context.onstatechange = didStartRendering;
 source.start();
 </script>
 </html>
	<!DOCTYPE html>
	<html>
	<body>
	<script src="../resources/js-test.js"></script>
	<script>
	description("Tests that calling AudioContext.resume() while already running resolves the promise.");
	jsTestIsAsync = true;

	function didStartRendering()
	{
	context.onstatechange = null;
	testPassed("Did start rendering");
	shouldBeEqualToString("context.state", "running");
	context.resume().then(() => {
	testPassed("Calling resume() while running resolved the promise");
	shouldBeEqualToString("context.state", "running");
	context.resume().then(() => {
	testPassed("Calling resume() while running resolved the promise");
	shouldBeEqualToString("context.state", "running");
	finishJSTest();
	}, (e) => {
	testFailed("Second call to context.resume() unexpectedly threw an exception: " + e);
	finishJSTest();
	});
	}, (e) => {
	testFailed("First call to context.resume() unexpectedly threw an exception: " + e);
	finishJSTest();
	});
	}

	let context = new AudioContext;
	var source = context.createConstantSource();
	source.connect(context.destination);

	context.onstatechange = didStartRendering;
	source.start();
	</script>
	</html>