MediaRecorder-disabled-tracks.https.html

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This WPT test may be referenced by the following Test IDs:
- /mediacapture-record/MediaRecorder-disabled-tracks.https.html - WPT Dashboard Interop Dashboard

<!doctype html>

<html>

<head>

  <title>MediaRecorder Disabled Tracks</title>

  <link rel="help" href="https://w3c.github.io/mediacapture-record/MediaRecorder.html#mediarecorder">

<script src="/resources/testharness.js"></script>

  <script src="/resources/testharnessreport.js"></script>

  <script src=/resources/testdriver.js></script>

<script src=/resources/testdriver-vendor.js></script>

<script src='../mediacapture-streams/permission-helper.js'></script>

</head>

<script>

  // This test verifies that MediaStream with disabled tracks can be correctly

  // recorded. See crbug.com/878255 for more context.

  [ ["video-only",  {video: true,  audio: false}],

    ["audio-only",  {video: false, audio: true}],

    ["audio-video", {video: true,  audio: true}]]

  .forEach( function(args) {

    async_test(function(test) {

      let recorder;

      const recorderOnDataAvailable = test.step_func(function(event) {

        if (recorder.state != "recording")

          return;

        recorder.onstop = recorderOnStopExpected;

        recorder.stop();

});

      const recorderOnStopExpected = test.step_func_done();

      const recorderOnStopUnexpected = test.unreached_func('Recording stopped.');

      const recorderOnError = test.unreached_func('Recording error.');

      const gotStream = test.step_func(function(stream) {

        for (track of stream.getTracks())

          track.enabled = false;

        recorder = new MediaRecorder(stream);

        assert_equals(recorder.state, "inactive");

        recorder.ondataavailable = recorderOnDataAvailable;

        recorder.onstop = recorderOnStopUnexpected;

        recorder.onerror = recorderOnError;

        recorder.start();

        assert_equals(recorder.state, "recording");

        recorder.requestData();

});

      const onError = test.unreached_func('Error creating MediaStream.');

      setMediaPermission().then(() => navigator.mediaDevices.getUserMedia(args[1])).then(gotStream, onError);

    }, args[0]);

});

</script>