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<!DOCTYPE html>
<!-- Copyright © 2016 Chromium authors and World Wide Web Consortium, (Massachusetts Institute of Technology, ERCIM, Keio University, Beihang). -->
<html>
<head>
<title>Test MediaKeys lifetime when adding a session</title>
<script src="encrypted-media-utils.js"></script>
<!--
Test requires Chromium specific content and is being disabled.
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
-->
</head>
<body>
<div id="log"></div>
<script>
// MediaKeySessions remain as long as:
// JavaScript has a reference to it
// OR (MediaKeys is around
// AND the session has not received a close() event)
// In the tests below, we do not close any session nor keep a
// Javascript reference to any session, so MediaKeySessions remain
// as long as the associated MediaKeys object is around.
// For this test, create a MediaKeySession and verify lifetime.
async_test(function(test)
{
var initDataType;
var initData;
var mediaKeys;
var startingActiveDOMObjectCount = window.internals.activeDOMObjectCount(document);
function numActiveDOMObjectsCreated()
{
return window.internals.activeDOMObjectCount(document) - startingActiveDOMObjectCount;
}
// Create a MediaKeys object with a session.
navigator.requestMediaKeySystemAccess('org.w3.clearkey', getSimpleConfiguration()).then(function(access) {
initDataType = access.getConfiguration().initDataTypes[0];
initData = getInitData(initDataType);
return access.createMediaKeys();
}).then(function(result) {
mediaKeys = result;
// Verify MediaKeys is an ActiveDOMObject.
// In non-Oilpan, numActiveDOMObjectsCreate() == 1.
// In Oilpan, numActiveDOMObjectsCreate() <= 4.
// (1 MediaKeys,
// 1 MediaKeysInitializer and
// 1 MediaKeySystemAccessInitializer (navigator.requestMediaKeySystemAccess() use above),
// 1 MediaKeySystemAccessInitializer (isInitDataSupported() (via getSupportedInitDataType())))
assert_between_inclusive(numActiveDOMObjectsCreated(), 1, 4, 'MediaKeys.create()');
var mediaKeySession = mediaKeys.createSession();
return mediaKeySession.generateRequest(initDataType, initData);
}).then(function() {
// Should be 1 MediaKeys + 1 MediaKeySession.
// In non-Oilpan, numActiveDOMObjectsCreate() == 2.
// In Oilpan, numActiveDOMObjectsCreate() <= 6.
// (1 MediaKeys,
// 1 MediaKeysInitializer and
// 2 MediaKeySystemAccessInitializer,
// 1 ContentDecryptionModuleResultPromise and
// 1 MediaKeySession).
assert_between_inclusive(numActiveDOMObjectsCreated(), 2, 6, 'MediaKeys.createSession()');
// Run gc(), should not affect MediaKeys object nor the
// session since we still have a reference to it.
// When enabling oilpan GC, the in-active
// ScriptPromiseResolvers will be destroyed.
return createGCPromise();
}).then(function(result) {
assert_equals(typeof mediaKeys.createSession, 'function');
// MediaKeys + MediaKeySessions should remain.
// In non-Oilpan, there is also something from createGCPromise().
assert_between_inclusive(numActiveDOMObjectsCreated(), 2, 3, 'After gc()');
// Drop reference to the MediaKeys object and run gc()
// again. Object should be collected this time. Since
// MediaKeySessions remain alive as long as MediaKeys is
// around, it is possible that gc() checks the
// MediaKeySession object first, and doesn't collect it
// since MediaKeys hasn't been collected yet. Thus run gc()
// twice, to ensure that the unreferenced MediaKeySession
// object get collected.
mediaKeys = null;
return createGCPromise();
}).then(function(result) {
return createGCPromise();
}).then(function(result) {
// No MediaKeySessions should remain.
// In non-Oilpan, there is also something from createGCPromise().
assert_between_inclusive(numActiveDOMObjectsCreated(), 0, 1, 'After final gc()');
test.done();
}).catch(function(error) {
forceTestFailureFromPromise(test, error);
});
}, 'MediaKeys lifetime with session');
</script>
</body>
</html>
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