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Issue 209103002:
Add lifetime tests for MediaKeySession (Closed)
Base URL: https://chromium.googlesource.com/chromium/blink.git@master| OLD | NEW |
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| (Empty) | |
| 1 <!DOCTYPE html> | |
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ddorwin
2014/03/27 17:20:36
Once the Decryptor lifetimes are fixed, we'll want
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| 2 <html> | |
| 3 <head> | |
| 4 <title>Test MediaKeySession lifetime</title> | |
| 5 <script src="../w3c-media-utils.js"></script> | |
| 6 <script src="../../resources/testharness.js"></script> | |
| 7 <script src="../../resources/testharnessreport.js"></script> | |
| 8 <script src="../../resources/gc.js"></script> | |
| 9 </head> | |
| 10 <body> | |
| 11 <div id="log"></div> | |
| 12 <script> | |
| 13 setup({ timeout: 60000 }); // Timeout for all tests to run. | |
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ddorwin
2014/03/27 17:20:36
We shouldn't need these anymore:
https://src.chrom
jrummell
2014/03/27 18:42:56
Done.
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| 14 | |
| 15 // Since MediaKeySession (but not MediaKeys) are ActiveDOMObjects, | |
| 16 // we can determine when they are garbage collected. | |
| 17 // MediaKeySessions remain as long as: | |
| 18 // JavaScript has a reference to it | |
| 19 // OR (MediaKeys is around AND the session has not received a clos e() event) | |
| 20 test(function() | |
| 21 { | |
| 22 var initData = new Uint8Array([0, 1, 2, 3, 4, 5, 6, 7]); | |
| 23 var startingActiveDOMObjectCount = window.internals.activeDOMObj ectCount(document); | |
| 24 | |
| 25 function numActiveDOMObjectsCreated() | |
| 26 { | |
| 27 return window.internals.activeDOMObjectCount(document) - sta rtingActiveDOMObjectCount; | |
| 28 } | |
| 29 | |
| 30 var mediaKeys = new MediaKeys("org.w3.clearkey"); | |
| 31 assert_equals(mediaKeys.keySystem, 'org.w3.clearkey'); | |
| 32 | |
| 33 // Verify MediaKeys are not ActiveDOMObjects. | |
| 34 assert_equals(numActiveDOMObjectsCreated(), 0, "MediaKeys create d an ActiveDOMObject"); | |
| 35 | |
| 36 // Create 3 sessions. | |
| 37 var mediaKeySession1 = mediaKeys.createSession("video/webm", ini tData); | |
| 38 assert_equals(numActiveDOMObjectsCreated(), 1); | |
| 39 var mediaKeySession2 = mediaKeys.createSession("video/webm", ini tData); | |
| 40 assert_equals(numActiveDOMObjectsCreated(), 2); | |
| 41 var mediaKeySession3 = mediaKeys.createSession("video/webm", ini tData); | |
| 42 assert_equals(numActiveDOMObjectsCreated(), 3); | |
| 43 | |
| 44 // Run gc(). All sessions should remain as we have a reference | |
| 45 // to each one. | |
| 46 gc(); | |
| 47 assert_equals(numActiveDOMObjectsCreated(), 3); | |
| 48 | |
| 49 // Now drop references to 2 of the sessions. Even though we | |
| 50 // don't have a reference, MediaKeys is still around (and the | |
| 51 // sessions aren't closed), so the objects won't be collected. | |
| 52 mediaKeySession2 = null; | |
| 53 mediaKeySession3 = null; | |
| 54 gc(); | |
| 55 assert_equals(numActiveDOMObjectsCreated(), 3); | |
| 56 | |
| 57 // Now drop the reference to MediaKeys. It and the 2 | |
| 58 // unreferenced sessions should be collected. Since | |
| 59 // MediaKeySessions remain alive as long as MediaKeys is around, | |
| 60 // it is possible that gc() checks one or both MediaKeySession | |
| 61 // objects first, and doesn't collect them since MediaKeys | |
| 62 // hasn't been collected yet. Thus run gc() twice, to ensure | |
| 63 // that the unreferenced MediaKeySession objects get collected. | |
| 64 mediaKeys = null; | |
| 65 gc(); | |
| 66 gc(); | |
| 67 assert_equals(numActiveDOMObjectsCreated(), 1); | |
| 68 | |
| 69 // Drop the reference to the first session. It should get | |
| 70 // collected now since MediaKeys is gone. | |
| 71 mediaKeySession1 = null; | |
| 72 gc(); | |
| 73 assert_equals(numActiveDOMObjectsCreated(), 0); | |
| 74 }, "MediaKeySession lifetime without release()", { timeout: 60000 }) ; | |
| 75 </script> | |
| 76 </body> | |
| 77 </html> | |
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