Bug 1424341 Add tests for privacy.reduceTimerPrecision that confirm the default timer resolution works
MozReview-Commit-ID: 1tGb0kedqSP
--- a/browser/components/resistfingerprinting/test/mochitest/file_animation_api.html
+++ b/browser/components/resistfingerprinting/test/mochitest/file_animation_api.html
@@ -32,24 +32,24 @@
const testDiv = document.getElementById("testDiv");
const animation = testDiv.animate({ opacity: [0, 1] }, 100000);
animation.play();
waitForCondition(
() => animation.currentTime > 100,
() => {
opener.ok(isRounded(animation.startTime),
- "animation.startTime is rounded");
+ "pref: " + opener.currentPref + " - animation.startTime is not rounded");
opener.ok(isRounded(animation.currentTime),
- "animation.currentTime is rounded");
+ "pref: " + opener.currentPref + " - animation.currentTime is not rounded");
opener.ok(isRounded(animation.timeline.currentTime),
- "animation.timeline.currentTime is rounded");
+ "pref: " + opener.currentPref + " - animation.timeline.currentTime is not rounded");
if (document.timeline) {
opener.ok(isRounded(document.timeline.currentTime),
- "document.timeline.currentTime is rounded");
+ "pref: " + opener.currentPref + " - document.timeline.currentTime is not rounded");
}
opener.done();
window.close();
},
"animation failed to start");
}
</script>
</head>--- a/browser/components/resistfingerprinting/test/mochitest/test_animation_api.html
+++ b/browser/components/resistfingerprinting/test/mochitest/test_animation_api.html
@@ -8,30 +8,56 @@ https://bugzilla.mozilla.org/show_bug.cg
<title>Test for Bug 1382545</title>
<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
<script type="application/javascript">
/** Test for Bug 1382545 **/
SimpleTest.waitForExplicitFinish();
+ var currentPref = "";
window.onload = () => {
+ currentPref = "privacy.resistFingerprinting";
SpecialPowers.pushPrefEnv({"set":
[
["privacy.resistFingerprinting", true],
- ["dom.animations-api.core.enabled", true]
+ ["dom.animations-api.core.enabled", true],
+ ["privacy.reduceTimerPrecision", false]
]
}, runTest);
};
function runTest() {
window.open("file_animation_api.html");
}
+ let completed = 0;
+ const numTests = 2;
function done() {
- SimpleTest.finish();
+ completed++;
+ if (completed == numTests) {
+ SimpleTest.finish();
+ } else {
+ nextTest();
+ }
}
+ function nextTest() {
+ if (completed == 1) {
+ currentPref = "privacy.reduceTimerPrecision";
+ SpecialPowers.pushPrefEnv({"set":
+ [
+ ["privacy.resistFingerprinting", false],
+ ["dom.animations-api.core.enabled", true],
+ ["privacy.reduceTimerPrecision", true]
+ ]
+ }, runTest);
+ } else {
+ ok(false, "I seem to have asked for " + numTests +
+ " tests, but don't know how to run them all.");
+ SimpleTest.finish();
+ }
+ }
</script>
</head>
<body>
</body>
</html>--- a/browser/components/resistfingerprinting/test/mochitest/test_reduce_time_precision.html
+++ b/browser/components/resistfingerprinting/test/mochitest/test_reduce_time_precision.html
@@ -1,23 +1,24 @@
<!DOCTYPE HTML>
<html>
<!--
Tor bug
https://trac.torproject.org/projects/tor/ticket/1517
-->
<head>
<meta charset="utf-8">
- <title>Test for Tor Bug 1517</title>
+ <title>Test for Tor Bug 1517 and Mozilla Bug 1424341</title>
<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<script type="application/javascript" src="/tests/SimpleTest/SpawnTask.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<a target="_blank" href="https://trac.torproject.org/projects/tor/ticket/1517">Tor Bug 1517</a>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1424341">Mozilla Bug 1424341</a>
<!-- Canvas for testing 'currentTime' -->
<canvas id="test-canvas" width="100" height="100"></canvas>
<!-- The main testing script -->
<script type="application/javascript">
SimpleTest.requestFlakyTimeout("testing JS time-based fingerprinting");
@@ -35,26 +36,27 @@ https://trac.torproject.org/projects/tor
"new Date().getTime()",
"new Event(\"\").timeStamp",
"new File([], \"\").lastModified",
"new File([], \"\").lastModifiedDate.getTime()",
];
const kExpectedResolution = 100;
- function* checkWorker(worker) {
+ function* checkWorker(worker, prefname) {
// The child worker will send the results back.
let checkTimeStamps = () => new Promise(function(resolve) {
let onMessage = function(event) {
worker.removeEventListener("message", onMessage);
let timeStamps = event.data;
for (let i = 0; i < timeStampCodes.length; i++) {
let timeStamp = timeStamps[i];
is(timeStamp % kExpectedResolution, 0,
+ "pref: " + prefname + " - '" +
"'" + timeStampCodes[i] +
"' should be rounded to nearest 100 ms in workers; saw " +
timeStamp);
}
resolve();
};
worker.addEventListener("message", onMessage);
});
@@ -65,44 +67,85 @@ https://trac.torproject.org/projects/tor
// First, check the child's results.
yield checkTimeStamps();
// Then, check the grandchild's results.
yield checkTimeStamps();
worker.terminate();
}
- add_task(async function testWorker() {
+ add_task(async function testWorkerRFP() {
// Create one worker before setting the pref, and one after, in order to
// check that the resolution is updated whether or not the worker was
// already started
let worker1 = new Worker("worker_child.js");
await SpecialPowers.pushPrefEnv({
- "set": [["privacy.resistFingerprinting", true]]});
+ "set": [["privacy.resistFingerprinting", true],
+ ["privacy.reduceTimerPrecision", false]]});
let worker2 = new Worker("worker_child.js");
// Allow ~550 ms to elapse, so we can get non-zero
// time values for all elements.
await new Promise(resolve => window.setTimeout(resolve, 550));
- await checkWorker(worker1);
- await checkWorker(worker2);
+ await checkWorker(worker1, "privacy.resistFingerprinting");
+ await checkWorker(worker2, "privacy.resistFingerprinting");
});
- add_task(async function testDOM() {
+ add_task(async function testWorkerRTP() {
+ // Create one worker before setting the pref, and one after, in order to
+ // check that the resolution is updated whether or not the worker was
+ // already started
+ let worker1 = new Worker("worker_child.js");
+ await SpecialPowers.pushPrefEnv({
+ "set": [["privacy.resistFingerprinting", false],
+ ["privacy.reduceTimerPrecision", true]]});
+ let worker2 = new Worker("worker_child.js");
+ // Allow ~550 ms to elapse, so we can get non-zero
+ // time values for all elements.
+ await new Promise(resolve => window.setTimeout(resolve, 550));
+ await checkWorker(worker1, "privacy.reduceTimerPrecision");
+ await checkWorker(worker2, "privacy.reduceTimerPrecision");
+ });
+
+ add_task(async function testDOMRFP() {
+ await SpecialPowers.pushPrefEnv({
+ "set": [["privacy.resistFingerprinting", true],
+ ["privacy.reduceTimerPrecision", false]]});
let timeStampCodesDOM = timeStampCodes.concat([
"audioContext.currentTime * 1000",
"canvasStream.currentTime * 1000",
]);
// Loop through each timeStampCode, evaluate it,
// and check if it is rounded to the nearest 100 ms.
for (let timeStampCode of timeStampCodesDOM) {
let timeStamp = eval(timeStampCode);
is(timeStamp % kExpectedResolution, 0,
+ "pref: privacy.resistFingerprinting - '" +
"'" + timeStampCode +
"' should be rounded to nearest 100 ms; saw " +
timeStamp);
}
});
+ add_task(async function testDOMRTP() {
+ await SpecialPowers.pushPrefEnv({
+ "set": [["privacy.resistFingerprinting", false],
+ ["privacy.reduceTimerPrecision", true]]});
+ let timeStampCodesDOM = timeStampCodes.concat([
+ "audioContext.currentTime * 1000",
+ "canvasStream.currentTime * 1000",
+ ]);
+ // Loop through each timeStampCode, evaluate it,
+ // and check if it is rounded to the nearest 100 ms.
+ for (let timeStampCode of timeStampCodesDOM) {
+ let timeStamp = eval(timeStampCode);
+ is(timeStamp % kExpectedResolution, 0,
+ "pref: privacy.reduceTimerPrecision - '" +
+ timeStampCode +
+ "' should be rounded to nearest 100 ms; saw " +
+ timeStamp);
+ }
+ });
+
</script>
</body>
</html>