{"action":"created","comment":{"url":"https://api.github.com/repos/w3c/web-platform-tests/pulls/comments/77723181","id":77723181,"diff_hunk":"@@ -76,6 +82,17 @@\n               'video/mp4;codecs=\"mp4a.40.2 , avc1.4d001e \"',\n               'video/mp4;codecs=\"avc1.4d001e,mp4a.40.5\"',\n           ], true, 'Test valid MP4 type');\n+\n+          mediasource_test(function(test, mediaElement, mediaSource)","path":"media-source/mediasource-is-type-supported.html","position":34,"original_position":34,"commit_id":"21b3020d4b607431cd34e268b4eaa69da9672e73","original_commit_id":"21b3020d4b607431cd34e268b4eaa69da9672e73","user":{"login":"wolenetz","id":11578819,"avatar_url":"https://avatars.githubusercontent.com/u/11578819?v=3","gravatar_id":"","url":"https://api.github.com/users/wolenetz","html_url":"https://github.com/wolenetz","followers_url":"https://api.github.com/users/wolenetz/followers","following_url":"https://api.github.com/users/wolenetz/following{/other_user}","gists_url":"https://api.github.com/users/wolenetz/gists{/gist_id}","starred_url":"https://api.github.com/users/wolenetz/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/wolenetz/subscriptions","organizations_url":"https://api.github.com/users/wolenetz/orgs","repos_url":"https://api.github.com/users/wolenetz/repos","events_url":"https://api.github.com/users/wolenetz/events{/privacy}","received_events_url":"https://api.github.com/users/wolenetz/received_events","type":"User","site_admin":false},"body":"I understand, and that is an interesting datapoint. I assume that making Edge return \"maybe\" for canPlayType(... vorbis) might also not be a good idea, since apps may take that as a signal to attempt progressive playback of media including vorbis. I'll remove this MSE suite test, regardless, though in general, that non-normative note should be adhered to.","created_at":"2016-09-06T21:36:29Z","updated_at":"2016-09-06T21:36:29Z","html_url":"https://github.com/w3c/web-platform-tests/pull/3635#discussion_r77723181","pull_request_url":"https://api.github.com/repos/w3c/web-platform-tests/pulls/3635","_links":{"self":{"href":"https://api.github.com/repos/w3c/web-platform-tests/pulls/comments/77723181"},"html":{"href":"https://github.com/w3c/web-platform-tests/pull/3635#discussion_r77723181"},"pull_request":{"href":"https://api.github.com/repos/w3c/web-platform-tests/pulls/3635"}}},"pull_request":{"url":"https://api.github.com/repos/w3c/web-platform-tests/pulls/3635","id":83864253,"html_url":"https://github.com/w3c/web-platform-tests/pull/3635","diff_url":"https://github.com/w3c/web-platform-tests/pull/3635.diff","patch_url":"https://github.com/w3c/web-platform-tests/pull/3635.patch","issue_url":"https://api.github.com/repos/w3c/web-platform-tests/issues/3635","number":3635,"state":"open","locked":false,"title":"Close coverage gaps identified in review of PR #823","user":{"login":"wolenetz","id":11578819,"avatar_url":"https://avatars.githubusercontent.com/u/11578819?v=3","gravatar_id":"","url":"https://api.github.com/users/wolenetz","html_url":"https://github.com/wolenetz","followers_url":"https://api.github.com/users/wolenetz/followers","following_url":"https://api.github.com/users/wolenetz/following{/other_user}","gists_url":"https://api.github.com/users/wolenetz/gists{/gist_id}","starred_url":"https://api.github.com/users/wolenetz/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/wolenetz/subscriptions","organizations_url":"https://api.github.com/users/wolenetz/orgs","repos_url":"https://api.github.com/users/wolenetz/repos","events_url":"https://api.github.com/users/wolenetz/events{/privacy}","received_events_url":"https://api.github.com/users/wolenetz/received_events","type":"User","site_admin":false},"body":"1. addSourceBuffer(null) should result in TypeError (not\r\n   NotSupportedError as currently expected by\r\n   mediasource-addsourcebuffer.html)\r\n   Note, https://crbug.com/623781 tracks fixing the Chrome M54\r\n   compliance issue behind at least the failure of 2 TypeError subtests\r\n   in mediasource-addsourcebuffer.html.\r\n2. isTypeSupported(mime) returning true should mean that\r\n   canPlayType(mime) is either \"maybe\" or \"probably\".\r\n3. Explicitly test isTypeSupported for each of: \"xxx\", \"text/html\",\r\n   \"image/jpeg\" result in false.\r\n4. Explicitly test sourceBuffers added to distinct MediaSource objects\r\n   give error when they are used in removeSourceBuffer to the wrong\r\n   MediaSource. This can be added to mediasource-removesourcebuffer.html\r\n\r\nThis commit also removes a duplicated invalid type test 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