| Index: LayoutTests/media/encrypted-media/encrypted-media-lifetime-mediakeys.html
|
| diff --git a/LayoutTests/media/encrypted-media/encrypted-media-lifetime-mediakeys.html b/LayoutTests/media/encrypted-media/encrypted-media-lifetime-mediakeys.html
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..f6548eeca753c24586df8f2afbd40955da6c90cb
|
| --- /dev/null
|
| +++ b/LayoutTests/media/encrypted-media/encrypted-media-lifetime-mediakeys.html
|
| @@ -0,0 +1,121 @@
|
| +<!DOCTYPE html>
|
| +<html>
|
| + <head>
|
| + <title>Test MediaKeys lifetime</title>
|
| + <script src="../../resources/testharness.js"></script>
|
| + <script src="../../resources/testharnessreport.js"></script>
|
| + <script src="../../resources/gc.js"></script>
|
| + </head>
|
| + <body>
|
| + <div id="log"></div>
|
| + <script>
|
| + // Since MediaKeys are not ActiveDOMObjects, it is hard to
|
| + // determine when they are garbage collected. For some tests below
|
| + // a MediaKeySession (which is an ActiveDOMObject) is added so
|
| + // there is something to count.
|
| +
|
| + // 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, simply verify that creating and destroying
|
| + // MediaKeys doesn't crash.
|
| + test(function()
|
| + {
|
| + // Create a MediaKeys object and free immediately.
|
| + var mediaKeys = new MediaKeys("org.w3.clearkey");
|
| + mediaKeys = null;
|
| + gc();
|
| +
|
| + // Create a MediaKeys object and make sure gc doesn't free it
|
| + // as long as we have a reference.
|
| + mediaKeys = new MediaKeys("org.w3.clearkey");
|
| + gc();
|
| + assert_equals(mediaKeys.keySystem, 'org.w3.clearkey');
|
| + mediaKeys = null;
|
| + gc();
|
| +
|
| + }, "MediaKeys lifetime");
|
| +
|
| + // For this test, create a MediaKeySession (which is an
|
| + // ActiveDOMObject) and verify lifetime.
|
| + test(function()
|
| + {
|
| + var mediaKeys;
|
| + var initData = new Uint8Array([0, 1, 2, 3, 4, 5, 6, 7]);
|
| + var startingActiveDOMObjectCount = window.internals.activeDOMObjectCount(document);
|
| +
|
| + function numActiveDOMObjectsCreated()
|
| + {
|
| + return window.internals.activeDOMObjectCount(document) - startingActiveDOMObjectCount;
|
| + }
|
| +
|
| + // Create a MediaKeys object with a session.
|
| + mediaKeys = new MediaKeys("org.w3.clearkey");
|
| + mediaKeys.createSession("video/webm", initData);
|
| + assert_equals(numActiveDOMObjectsCreated(), 1);
|
| +
|
| + // Run gc(), should not affect MediaKeys object nor the session
|
| + // since we still have a reference to it.
|
| + gc();
|
| + assert_equals(mediaKeys.keySystem, 'org.w3.clearkey');
|
| + assert_equals(numActiveDOMObjectsCreated(), 1);
|
| +
|
| + // 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;
|
| + gc();
|
| + gc();
|
| + assert_equals(numActiveDOMObjectsCreated(), 0);
|
| +
|
| + }, "MediaKeys lifetime with session");
|
| +
|
| + // For this test, create several MediaKeys (with MediaKeySessions so
|
| + // they can be counted) and verify lifetime.
|
| + test(function()
|
| + {
|
| + var mediaKeys;
|
| + var initData = new Uint8Array([0, 1, 2, 3, 4, 5, 6, 7]);
|
| + var startingActiveDOMObjectCount = window.internals.activeDOMObjectCount(document);
|
| +
|
| + function numActiveDOMObjectsCreated()
|
| + {
|
| + return window.internals.activeDOMObjectCount(document) - startingActiveDOMObjectCount;
|
| + }
|
| +
|
| + // Create a few MediaKeys objects. Only keep a reference to the
|
| + // last one created.
|
| + for (var i = 0; i < 5; ++i) {
|
| + mediaKeys = new MediaKeys("org.w3.clearkey");
|
| + mediaKeys.createSession("video/webm", initData);
|
| + }
|
| + assert_equals(numActiveDOMObjectsCreated(), 5);
|
| +
|
| + // All but the last one created should be garbage collected.
|
| + // 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 objects get collected.
|
| + gc();
|
| + gc();
|
| + assert_equals(numActiveDOMObjectsCreated(), 1);
|
| + assert_equals(mediaKeys.keySystem, 'org.w3.clearkey');
|
| +
|
| + // Release the last MediaKeys object created.
|
| + mediaKeys = null;
|
| + gc();
|
| + gc();
|
| + assert_equals(numActiveDOMObjectsCreated(), 0);
|
| + }, "Multiple MediaKeys lifetime");
|
| + </script>
|
| + </body>
|
| +</html>
|
|
|
Chromium Code Reviews
Issue 180203002:
Add EME content test that forces garbage collection (Closed)
Base URL: https://chromium.googlesource.com/chromium/blink.git@master