Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 214 insertions, 0 deletions

diff --git a/dom/media/webrtc/tests/mochitests/mediaStreamPlayback.js b/dom/media/webrtc/tests/mochitests/mediaStreamPlayback.js
new file mode 100644
index 0000000000..5bf39cb2f6
--- /dev/null
+++ b/dom/media/webrtc/tests/mochitests/mediaStreamPlayback.js
@@ -0,0 +1,214 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+const ENDED_TIMEOUT_LENGTH = 30000;
+
+/* The time we wait depends primarily on the canplaythrough event firing
+ * Note: this needs to be at least 30s because the
+ *       B2G emulator in VMs is really slow. */
+const VERIFYPLAYING_TIMEOUT_LENGTH = 60000;
+
+/**
+ * This class manages playback of a HTMLMediaElement with a MediaStream.
+ * When constructed by a caller, an object instance is created with
+ * a media element and a media stream object.
+ *
+ * @param {HTMLMediaElement} mediaElement the media element for playback
+ * @param {MediaStream} mediaStream the media stream used in
+ *                                  the mediaElement for playback
+ */
+function MediaStreamPlayback(mediaElement, mediaStream) {
+  this.mediaElement = mediaElement;
+  this.mediaStream = mediaStream;
+}
+
+MediaStreamPlayback.prototype = {
+  /**
+   * Starts media element with a media stream, runs it until a canplaythrough
+   * and timeupdate event fires, and calls stop() on all its tracks.
+   *
+   * @param {Boolean} isResume specifies if this media element is being resumed
+   *                           from a previous run
+   */
+  playMedia(isResume) {
+    this.startMedia(isResume);
+    return this.verifyPlaying()
+      .then(() => this.stopTracksForStreamInMediaPlayback())
+      .then(() => this.detachFromMediaElement());
+  },
+
+  /**
+   * Stops the local media stream's tracks while it's currently in playback in
+   * a media element.
+   *
+   * Precondition: The media stream and element should both be actively
+   *               being played. All the stream's tracks must be local.
+   */
+  stopTracksForStreamInMediaPlayback() {
+    var elem = this.mediaElement;
+    return Promise.all([
+      haveEvent(
+        elem,
+        "ended",
+        wait(ENDED_TIMEOUT_LENGTH, new Error("Timeout"))
+      ),
+      ...this.mediaStream
+        .getTracks()
+        .map(t => (t.stop(), haveNoEvent(t, "ended"))),
+    ]);
+  },
+
+  /**
+   * Starts media with a media stream, runs it until a canplaythrough and
+   * timeupdate event fires, and detaches from the element without stopping media.
+   *
+   * @param {Boolean} isResume specifies if this media element is being resumed
+   *                           from a previous run
+   */
+  playMediaWithoutStoppingTracks(isResume) {
+    this.startMedia(isResume);
+    return this.verifyPlaying().then(() => this.detachFromMediaElement());
+  },
+
+  /**
+   * Starts the media with the associated stream.
+   *
+   * @param {Boolean} isResume specifies if the media element playback
+   *                           is being resumed from a previous run
+   */
+  startMedia(isResume) {
+    // If we're playing media element for the first time, check that time is zero.
+    if (!isResume) {
+      is(
+        this.mediaElement.currentTime,
+        0,
+        "Before starting the media element, currentTime = 0"
+      );
+    }
+    this.canPlayThroughFired = listenUntil(
+      this.mediaElement,
+      "canplaythrough",
+      () => true
+    );
+
+    // Hooks up the media stream to the media element and starts playing it
+    this.mediaElement.srcObject = this.mediaStream;
+    this.mediaElement.play();
+  },
+
+  /**
+   * Verifies that media is playing.
+   */
+  verifyPlaying() {
+    var lastElementTime = this.mediaElement.currentTime;
+
+    var mediaTimeProgressed = listenUntil(
+      this.mediaElement,
+      "timeupdate",
+      () => this.mediaElement.currentTime > lastElementTime
+    );
+
+    return timeout(
+      Promise.all([this.canPlayThroughFired, mediaTimeProgressed]),
+      VERIFYPLAYING_TIMEOUT_LENGTH,
+      "verifyPlaying timed out"
+    ).then(() => {
+      is(this.mediaElement.paused, false, "Media element should be playing");
+      is(
+        this.mediaElement.duration,
+        Number.POSITIVE_INFINITY,
+        "Duration should be infinity"
+      );
+
+      // When the media element is playing with a real-time stream, we
+      // constantly switch between having data to play vs. queuing up data,
+      // so we can only check that the ready state is one of those two values
+      ok(
+        this.mediaElement.readyState === HTMLMediaElement.HAVE_ENOUGH_DATA ||
+          this.mediaElement.readyState === HTMLMediaElement.HAVE_CURRENT_DATA,
+        "Ready state shall be HAVE_ENOUGH_DATA or HAVE_CURRENT_DATA"
+      );
+
+      is(this.mediaElement.seekable.length, 0, "Seekable length shall be zero");
+      is(this.mediaElement.buffered.length, 0, "Buffered length shall be zero");
+
+      is(
+        this.mediaElement.seeking,
+        false,
+        "MediaElement is not seekable with MediaStream"
+      );
+      ok(
+        isNaN(this.mediaElement.startOffsetTime),
+        "Start offset time shall not be a number"
+      );
+      is(
+        this.mediaElement.defaultPlaybackRate,
+        1,
+        "DefaultPlaybackRate should be 1"
+      );
+      is(this.mediaElement.playbackRate, 1, "PlaybackRate should be 1");
+      is(this.mediaElement.preload, "none", 'Preload should be "none"');
+      is(this.mediaElement.src, "", "No src should be defined");
+      is(
+        this.mediaElement.currentSrc,
+        "",
+        "Current src should still be an empty string"
+      );
+    });
+  },
+
+  /**
+   * Detaches from the element without stopping the media.
+   *
+   * Precondition: The media stream and element should both be actively
+   *               being played.
+   */
+  detachFromMediaElement() {
+    this.mediaElement.pause();
+    this.mediaElement.srcObject = null;
+  },
+};
+
+// haxx to prevent SimpleTest from failing at window.onload
+function addLoadEvent() {}
+
+var scriptsReady = Promise.all(
+  ["/tests/SimpleTest/SimpleTest.js", "head.js"].map(script => {
+    var el = document.createElement("script");
+    el.src = script;
+    document.head.appendChild(el);
+    return new Promise(r => (el.onload = r));
+  })
+);
+
+function createHTML(options) {
+  return scriptsReady.then(() => realCreateHTML(options));
+}
+
+// noGum - Helper to detect whether active guM tracks still exist.
+//
+// It relies on the fact that, by spec, device labels from enumerateDevices are
+// only visible during active gum calls. They're also visible when persistent
+// permissions are granted, so turn off media.navigator.permission.disabled
+// (which is normally on otherwise in our tests). Lastly, we must turn on
+// media.navigator.permission.fake otherwise fake devices don't count as active.
+
+var noGum = () =>
+  pushPrefs(
+    ["media.navigator.permission.disabled", false],
+    ["media.navigator.permission.fake", true],
+    ["media.devices.insecure.enabled", true]
+  )
+    .then(() => navigator.mediaDevices.enumerateDevices())
+    .then(
+      ([device]) =>
+        device &&
+        is(device.label, "", "Test must leave no active gUM streams behind.")
+    );
+
+var runTest = testFunction =>
+  scriptsReady
+    .then(() => runTestWhenReady(testFunction))
+    .then(() => noGum())
+    .then(() => finish());