setSinkId-with-MediaElementAudioSourceNode.https.html

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This WPT test may be referenced by the following Test IDs:
- /webaudio/the-audio-api/the-mediaelementaudiosourcenode-interface/setSinkId-with-MediaElementAudioSourceNode.https.html - WPT Dashboard Interop Dashboard

<!doctype html>

<head>

<title>Test HTMLMediaElement.setSinkId() with MediaElementAudioSourceNode</title>

<link rel="help" href="https://webaudio.github.io/web-audio-api/#MediaElementAudioSourceNode">

</head>

<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>

"use strict";

/*

MediaElementAudioSourceNode silences HTMLMediaElement output to underlying

devices but setSinkId() should still function as if there were no

MediaElementAudioSourceNode according to

"The HTMLMediaElement MUST behave in an identical fashion after the

MediaElementAudioSourceNode has been created, except that the rendered audio

will no longer be heard directly, but instead will be heard as a consequence

of the MediaElementAudioSourceNode being connected through the routing graph."

*/

let audio;

promise_setup(async () => {

  audio = new Audio();

  audio.src = "/media/sound_5.oga";

  audio.autoplay = true;

  audio.loop = true;

  new AudioContext().createMediaElementSource(audio);

  await new Promise(r => audio.onplay = r);

});

promise_test(t => audio.setSinkId(""), "setSinkId on default audio output should always work");

promise_test(t => promise_rejects_dom(t, "NotFoundError", audio.setSinkId("nonexistent_device_id")),

  "setSinkId fails with NotFoundError on made up deviceid");

promise_test(async t => {

  await test_driver.bless('transient activation for selectAudioOutput()');

  const {deviceId} = await navigator.mediaDevices.selectAudioOutput();

  assert_greater_than(deviceId.length, 0, "deviceId.length");

  const p1 = audio.setSinkId(deviceId);

  assert_equals(audio.sinkId, "", "before it resolves, setSinkId is unchanged");

  await p1;

  assert_equals(audio.sinkId, deviceId, "setSinkId updates sinkId to the requested deviceId");

  await audio.setSinkId("");

  assert_equals(audio.sinkId, "", "resetting sink ID to default audio output should always work");

}, "setSinkId() with output device ID exposed by selectAudioOutput() should resolve");

</script>