encrypted-media/Google/encrypted-media-async-creation-with-gc.html

<!DOCTYPE html>
<!-- Copyright © 2016 Chromium authors and World Wide Web Consortium, (Massachusetts Institute of Technology, ERCIM, Keio University, Beihang). -->
<html>
    <head>
        <title>Test asynchronous creation of MediaKeys and MediaKeySession while running garbage collection</title>
        <script src="encrypted-media-utils.js"></script>
        <script src="/resources/testharness.js"></script>
        <script src="/resources/testharnessreport.js"></script>
    </head>
    <body>
        <div id="log"></div>
        <script>
            async_test(function(test)
            {
                // Run garbage collection often.
                setInterval(asyncGC, 0);

                var initDataType;
                var initData;
                var mediaKeySession;
                navigator.requestMediaKeySystemAccess('org.w3.clearkey', getSimpleConfiguration()).then(function(access) {
                    initDataType = access.getConfiguration().initDataTypes[0];
                    initData = getInitData(initDataType);
                    return access.createMediaKeys();
                }).then(function(mediaKeys) {
                    mediaKeySession = mediaKeys.createSession();
                    return mediaKeySession.generateRequest(initDataType, initData);
                }).then(function() {
                    return mediaKeySession.close();
                }).then(function(result) {
                    test.done();
                }).catch(function(error) {
                    forceTestFailureFromPromise(test, error);
                });
            }, 'Test asynchronous creation of MediaKeys and MediaKeySession while running garbage collection.');
        </script>
    </body>
</html>