test_animation_api.html

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<!DOCTYPE HTML>

<html>

<!--

https://bugzilla.mozilla.org/show_bug.cgi?id=1382545

-->

<head>

  <meta charset="utf-8">

  <title>Test for Bug 1382545</title>

  <script 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();

  // Used by file_animation_api.html

  var prefName = "";

  var expectedPrecision = 0;

  var resistFingerprinting = false;

  var reduceTimerPrecision = false;

  function runTest() {

    // No matter what we set the precision to, if we're in ResistFingerprinting mode

    // we use the larger of the precision pref and the constant RFP time-atom

    if (resistFingerprinting) {

      const RFP_TIME_ATOM_MS = 16.667;

      expectedPrecision = Math.max(1000*RFP_TIME_ATOM_MS, expectedPrecision);

    window.open("file_animation_api.html");

  function setupTest(rfp, rtp, ep) {

    // Set globals

    expectedPrecision = ep;

    resistFingerprinting = rfp;

    reduceTimerPrecision = rtp;

    prefName = "";

    prefName += resistFingerprinting ? "privacy.resistFingerprinting " : "";

    prefName += reduceTimerPrecision ? "privacy.reduceTimerPrecision " : "";

    SpecialPowers.pushPrefEnv({"set":

        ["privacy.resistFingerprinting", resistFingerprinting],

        ["privacy.reduceTimerPrecision", reduceTimerPrecision],

        ["privacy.resistFingerprinting.reduceTimerPrecision.microseconds", expectedPrecision],

],

    }, runTest);

  var testIndx = 0;

  var testSequence = [

    [true, false, 100000],

    [false, true, 100000],

    [true, false, 50000],

    [false, true, 50000],

    [true, false, 100],

    [false, true, 100],

    [true, true, 13],

    [false, true, 13],

];

  window.onload = () => {

    setupTest(testSequence[testIndx][0], testSequence[testIndx][1], testSequence[testIndx][2]);

};

  function done() {

    testIndx++;

    if (testIndx == testSequence.length) {

      SimpleTest.finish();

    } else {

      setupTest(testSequence[testIndx][0], testSequence[testIndx][1], testSequence[testIndx][2]);

  </script>

</head>

<body>

</body>

</html>