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1 <!DOCTYPE html> | 1 <!DOCTYPE html> |
2 <html> | 2 <html> |
3 <head> | 3 <head> |
4 <title>MediaKeySession lifetime after release()</title> | 4 <title>MediaKeySession lifetime after release()</title> |
5 <script src="encrypted-media-utils.js"></script> | 5 <script src="encrypted-media-utils.js"></script> |
6 <script src="../../resources/testharness.js"></script> | 6 <script src="../../resources/testharness.js"></script> |
7 <script src="../../resources/testharnessreport.js"></script> | 7 <script src="../../resources/testharnessreport.js"></script> |
8 </head> | 8 </head> |
9 <body> | 9 <body> |
10 <div id="log"></div> | 10 <div id="log"></div> |
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26 | 26 |
27 function numActiveDOMObjectsCreated() | 27 function numActiveDOMObjectsCreated() |
28 { | 28 { |
29 return window.internals.activeDOMObjectCount(document) - sta
rtingActiveDOMObjectCount; | 29 return window.internals.activeDOMObjectCount(document) - sta
rtingActiveDOMObjectCount; |
30 } | 30 } |
31 | 31 |
32 // Create 2 sessions. | 32 // Create 2 sessions. |
33 MediaKeys.create('org.w3.clearkey').then(function(result) { | 33 MediaKeys.create('org.w3.clearkey').then(function(result) { |
34 mediaKeys = result; | 34 mediaKeys = result; |
35 | 35 |
36 // Verify MediaKeys are not an ActiveDOMObject. However, the | 36 // Verify MediaKeys are not an ActiveDOMObject. |
37 // PromiseResolver objects used by MediaKeys/MediaKeySession | 37 assert_equals(numActiveDOMObjectsCreated(), 0, 'MediaKeys.cr
eate()'); |
38 // are ActiveDOMObjects, and they stay active until the end | |
39 // of the promise. | |
40 // Should be 1 PromiseResolver from create(). | |
41 assert_equals(numActiveDOMObjectsCreated(), 1, 'MediaKeys.cr
eate()'); | |
42 | 38 |
43 return mediaKeys.createSession(initDataType, initData); | 39 return mediaKeys.createSession(initDataType, initData); |
44 }).then(function(result) { | 40 }).then(function(result) { |
45 mediaKeySession1 = result; | 41 mediaKeySession1 = result; |
46 // Should be 1 MediaKeySession + 1 PromiseResolver from | 42 // Should be 1 MediaKeySession. |
47 // createSession(). | 43 assert_equals(numActiveDOMObjectsCreated(), 1, 'mediaKeys.cr
eateSession(1)'); |
48 assert_equals(numActiveDOMObjectsCreated(), 2, 'mediaKeys.cr
eateSession(1)'); | |
49 return mediaKeys.createSession(initDataType, initData); | 44 return mediaKeys.createSession(initDataType, initData); |
50 }).then(function(result) { | 45 }).then(function(result) { |
51 mediaKeySession2 = result; | 46 mediaKeySession2 = result; |
52 // Should be 2 MediaKeySessions + 1 PromiseResolver from the | 47 // Should be 2 MediaKeySessions. |
53 // last createSession(). | 48 assert_equals(numActiveDOMObjectsCreated(), 2, 'mediaKeys.cr
eateSession(2)'); |
54 assert_equals(numActiveDOMObjectsCreated(), 3, 'mediaKeys.cr
eateSession(2)'); | |
55 | 49 |
56 // Release the sessions. Once completed, only the JS | 50 // Release the sessions. Once completed, only the JS |
57 // reference to them keeps them around. | 51 // reference to them keeps them around. |
58 return mediaKeySession1.release(); | 52 return mediaKeySession1.release(); |
59 }).then(function(result) { | 53 }).then(function(result) { |
60 return mediaKeySession2.release(); | 54 return mediaKeySession2.release(); |
61 }).then(function(result) { | 55 }).then(function(result) { |
62 // Since both sessions have been closed, dropping the | 56 // Since both sessions have been closed, dropping the |
63 // reference to them from JS will result in the session | 57 // reference to them from JS will result in the session |
64 // being garbage-collected. | 58 // being garbage-collected. |
65 // Should be 2 MediaKeySessions + 1 PromiseResolver from the | 59 // Should be 2 MediaKeySessions. |
66 // last release(). | 60 assert_equals(numActiveDOMObjectsCreated(), 2); |
67 assert_equals(numActiveDOMObjectsCreated(), 3); | |
68 | 61 |
69 mediaKeySession1 = null; | 62 mediaKeySession1 = null; |
70 return createGCPromise(); | 63 return createGCPromise(); |
71 }).then(function(result) { | 64 }).then(function(result) { |
72 // Only mediaKeySession2 should remain. | 65 // Only mediaKeySession2 should remain. |
73 assert_equals(numActiveDOMObjectsCreated(), 1, 'mediaKeySess
ion1 not collected'); | 66 assert_equals(numActiveDOMObjectsCreated(), 1, 'mediaKeySess
ion1 not collected'); |
74 | 67 |
75 mediaKeySession2 = null; | 68 mediaKeySession2 = null; |
76 return createGCPromise(); | 69 return createGCPromise(); |
77 }).then(function(result) { | 70 }).then(function(result) { |
78 assert_equals(numActiveDOMObjectsCreated(), 0, 'mediaKeySess
ion2 not collected'); | 71 assert_equals(numActiveDOMObjectsCreated(), 0, 'mediaKeySess
ion2 not collected'); |
79 test.done(); | 72 test.done(); |
80 }).catch(function(error) { | 73 }).catch(function(error) { |
81 forceTestFailureFromPromise(test, error); | 74 forceTestFailureFromPromise(test, error); |
82 }); | 75 }); |
83 }, 'MediaKeySession lifetime after release()'); | 76 }, 'MediaKeySession lifetime after release()'); |
84 </script> | 77 </script> |
85 </body> | 78 </body> |
86 </html> | 79 </html> |
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