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<!DOCTYPE HTML>
<html>
<!--
Mozilla Bug:
https://bugzilla.mozilla.org/show_bug.cgi?id=1369309
Tor Ticket:
https://trac.torproject.org/projects/tor/ticket/15757
-->
<head>
<meta charset="utf-8">
<title>Test for Bug 1369309</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script type="application/javascript" src="manifest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</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;
const MS_PER_TIME_ATOM = 100; // Not the default anymore, but what we test here.
// Push the setting of 'privacy.resistFingerprinting' into gTestPrefs, which
// will be set during MediaTestManager.runTests().
gTestPrefs.push(
["privacy.resistFingerprinting", true],
["privacy.resistFingerprinting.reduceTimerPrecision.microseconds", MS_PER_TIME_ATOM * 1000],
["privacy.resistFingerprinting.reduceTimerPrecision.jitter", false],
// We use 240p as the target resolution 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, 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, shouldDrop) {
// Rounding the current time to 100ms.
const secondsPerAtom = MS_PER_TIME_ATOM / 1000;
const currentTimeAtoms = Math.floor(v.currentTime / secondsPerAtom);
const currentTime = currentTimeAtoms * secondsPerAtom;
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.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");
}
function startTest(test, token) {
let v = document.createElement("video");
v.token = token;
v.src = test.name;
manager.started(token);
once(v, "ended", () => {
checkStats(v, test.drop);
removeNodeAndSource(v);
manager.finished(v.token);
});
v.play();
}
manager.runTests(testCases, startTest);
</script>
</body>
</html>
|
