1235583 - TestVideoPlayback.test_playback_starts fails if playback has reached end of video

Status: RESOLVED WONTFIX

(Testing Graveyard :: external-media-tests, defect)

Description

[Maja Frydrychowicz :impossibus (was :maja_zf) (needinfo me)]

In most recent failures, logs show that current_time is equal to expected_duration. I think what happens is that the video takes a long time to initialize in VideoPuppeteer, so that it's already done playing by the time _start_time is set to current_time [1]. The definition of playback_started should account for that. The test should also pause playback after the VideoPuppeteer init is done.

[1] https://github.com/mjzffr/firefox-media-tests/blob/cdd155c1823a1a669246d3b093996fa3eb09dbc8/media_utils/video_puppeteer.py#L94

Comment 1

[Maja Frydrychowicz :impossibus (was :maja_zf) (needinfo me)]

Moving discussion over from Bug 1211959:

(In reply to Bryce Van Dyk (:SingingTree) from comment #69)
> Sure thing, I'm fairly new to these tests still, so any guidance would be
> appreciated.
> 
> I'm seeing this fail regularly at the moment on our Windows 8 test machine,
> but am uncertain as to what exactly is going on thus far.

I haven't looked at debugging this issue in a long time. Does Comment 0 make sense with what you're seeing on Windows 8 lately?

Comment 2

[Maja Frydrychowicz :impossibus (was :maja_zf) (needinfo me)]

Up-to-date reference for Comment 0 and playback_started: 
* https://dxr.mozilla.org/mozilla-central/source/dom/media/test/external/external_media_tests/media_utils/video_puppeteer.py#288

Comment 3

[Bryce Seager van Dyk [:bryce] (he/him) - Not reading bugmail]

I'm seeing some conflicting results when I watch the tests run, but I do understand comment 0, and am going to investigate further. I also haven't looked at the linux servers in any detail, and it seems like we have fails happening on them currently too, so I'll do some digging there.

Comment 4

[Maja Frydrychowicz :impossibus (was :maja_zf) (needinfo me)]

The media tests have been refactored such that this work is not needed any more.