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<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>Test for Navigator.hardwareConcurrency</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
<script type="application/javascript">
"use strict";
SimpleTest.waitForExplicitFinish();
function getWorkerHardwareConcurrency(onmessage) {
var script = "postMessage(navigator.hardwareConcurrency)";
var url = URL.createObjectURL(new Blob([script]));
var w = new Worker(url);
w.onmessage = onmessage;
}
function resistFingerprinting(value) {
return SpecialPowers.pushPrefEnv({"set": [["privacy.resistFingerprinting", value]]});
}
getWorkerHardwareConcurrency(e => {
var x = e.data;
is(typeof x, "number", "hardwareConcurrency should be a number.");
ok(x > 0, "hardwareConcurrency should be greater than 0.");
resistFingerprinting(true).then(() => {
getWorkerHardwareConcurrency(msg => {
const y = msg.data;
ok(y === 2, "hardwareConcurrency should always be 2 when we're resisting fingerprinting.");
resistFingerprinting(false).then(() => {
getWorkerHardwareConcurrency(msg1 => {
const z = msg1.data;
ok(z === x, "hardwareConcurrency should be the same as before we were resisting fingerprinting.");
SimpleTest.finish();
});
});
});
});
});
</script>
</head>
<body>
<p id="display"></p>
<div id="content" style="display: none">
</div>
<pre id="test">
</pre>
</body>
</html>
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