--- a/dom/media/test/test_video_stats_resistfingerprinting.html
+++ b/dom/media/test/test_video_stats_resistfingerprinting.html
@@ -15,55 +15,70 @@ https://trac.torproject.org/projects/tor
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=682299">Mozilla Bug 1369309</a>
<a target="_blank" href="https://trac.torproject.org/projects/tor/ticket/15757">Tor Ticket 15757</a>
<!-- The main testing script -->
<script class="testbody" type="text/javascript">
var manager = new MediaTestManager;
+ const SPOOFED_FRAMES_PER_SECOND = 30;
+ const SPOOFED_DROPPED_RATIO = 0.05;
// Push the setting of 'privacy.resistFingerprinting' into gTestPrefs, which
// will be set during MediaTestManager.runTests().
gTestPrefs.push(
- ["privacy.resistFingerprinting", true]
+ ["privacy.resistFingerprinting", true],
+ // We use 240p as the target resoultion since 480p is greater than every video
+ // source in our test suite, so we need to use 240p here for allowing us to
+ // test dropped rate here.
+ ["privacy.resistFingerprinting.target_video_res", 240]
);
var testCases = [
- { name:"320x240.ogv", type:"video/ogg", width:320, height:240, duration:0.266 },
- { name:"seek-short.webm", type:"video/webm", width:320, height:240, duration:0.23 },
+ { name:"320x240.ogv", type:"video/ogg", width:320, height:240, duration:0.266, drop: false },
+ { name:"seek.webm", type:"video/webm", width:320, height:240, duration:3.966, drop: false },
+ { name:"gizmo.mp4", type:"video/mp4", width:560, height:320, duration:5.56, drop: true }
];
- function checkStats(v) {
- is(v.mozParsedFrames, 0,
- "mozParsedFrames should be 0 if fingerprinting resistance is enabled");
- is(v.mozDecodedFrames, 0,
- "mozDecodedFrames should be 0 if fingerprinting resistance is enabled");
- is(v.mozPresentedFrames, 0,
- "mozPresentedFrames should be 0 if fingerprinting resistance is enabled");
- is(v.mozPaintedFrames, 0,
- "mozPaintedFrames should be 0 if fingerprinting resistance is enabled");
+ function checkStats(v, shouldDrop) {
+ // Rounding the current time to 100ms.
+ let currentTime = Math.floor(v.currentTime * 10) / 10;
+ let dropRate = 0;
+
+ if (shouldDrop) {
+ dropRate = SPOOFED_DROPPED_RATIO;
+ }
+
+ is(v.mozParsedFrames, parseInt(currentTime * SPOOFED_FRAMES_PER_SECOND, 10),
+ "mozParsedFrames should be spoofed if fingerprinting resistance is enabled");
+ is(v.mozDecodedFrames, parseInt(currentTime * SPOOFED_FRAMES_PER_SECOND, 10),
+ "mozDecodedFrames should be spoofed if fingerprinting resistance is enabled");
+ is(v.mozPresentedFrames,
+ parseInt(currentTime * SPOOFED_FRAMES_PER_SECOND * (1 - dropRate), 10),
+ "mozPresentedFrames should be spoofed if fingerprinting resistance is enabled");
+ is(v.mozPaintedFrames,
+ parseInt(currentTime * SPOOFED_FRAMES_PER_SECOND * (1 - dropRate), 10),
+ "mozPaintedFrames should be spoofed if fingerprinting resistance is enabled");
is(v.mozFrameDelay, 0.0,
"mozFrameDelay should be 0.0 if fingerprinting resistance is enabled");
let playbackQuality = v.getVideoPlaybackQuality();
- is(playbackQuality.creationTime, 0,
- "VideoPlaybackQuality.creationTime should be 0 if fingerprinting resistance is enabled");
- is(playbackQuality.totalVideoFrames, 0,
- "VideoPlaybackQuality.totalVideoFrames should be 0 if fingerprinting resistance is enabled");
- is(playbackQuality.droppedVideoFrames, 0,
- "VideoPlaybackQuality.droppedVideoFrames should be 0 if fingerprinting resistance is enabled");
+ is(playbackQuality.totalVideoFrames, parseInt(currentTime * SPOOFED_FRAMES_PER_SECOND, 10),
+ "VideoPlaybackQuality.totalVideoFrames should be spoofed if fingerprinting resistance is enabled");
+ is(playbackQuality.droppedVideoFrames, parseInt(currentTime * SPOOFED_FRAMES_PER_SECOND * dropRate, 10),
+ "VideoPlaybackQuality.droppedVideoFrames should be spoofed if fingerprinting resistance is enabled");
is(playbackQuality.corruptedVideoFrames, 0,
"VideoPlaybackQuality.corruptedVideoFrames should be 0 if fingerprinting resistance is enabled");
}
function startTest(test, token) {
let v = document.createElement("video");
v.token = token;
v.src = test.name;
manager.started(token);
once(v, "ended", () => {
- checkStats(v);
+ checkStats(v, test.drop);
removeNodeAndSource(v);
manager.finished(v.token);
});
v.play();
}
manager.runTests(testCases, startTest);
