The Tor Browser: image/test/mochitest/test

     1 <!DOCTYPE HTML>

     2 <html>

     3 <!--

     4 https://bugzilla.mozilla.org/show_bug.cgi?id=399925

     5 -->

     6 <head>

     7   <title>Test for Bug 399925</title>

     8   <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>

     9   <script type="text/javascript" src="imgutils.js"></script>

    10   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />

    11 </head>

    12 <body>

    13 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=399925">Mozilla Bug 399925</a>

    14 <p id="display"></p>

    15 <div id="content" style="display: none">

    16 <img src="bug399925.gif" id="gif" />

    17 <canvas id="canvas" width="100" height="100"> </canvas>

    18 </div>

    19 <pre id="test">

    20 <script class="testbody" type="text/javascript">

    22 /** Test for Bug 399925. **/

    23 var pngResults = new Array();

    24 var oldTimeoutPref;

    25 var oldDiscardPref;

    26 SimpleTest.waitForExplicitFinish();

    27 window.onload = runTest;

    29 function runTest()

    30 {

    31   // Get the old discard timeout

    32   oldTimeoutPref = getImagePref(DISCARD_TIMEOUT_PREF);

    34   // We're testing discarding here, so we should make sure it's flipped on

    35   oldDiscardPref = getImagePref(DISCARD_ENABLED_PREF);

    37   // Enable Discarding

    38   setImagePref(DISCARD_ENABLED_PREF, true);

    40   // Sets the discard timer to 500ms so we don't have to wait so long. The

    41   // actual time is nondeterministic, but is bounded by 2 * timer = 1 second.

    42   setImagePref(DISCARD_TIMEOUT_PREF, 1000);

    44   // Create the image _after_ setting the discard timer pref

    45   var image = new Image();

    46   image.setAttribute("id", "gif");

    47   image.src = "bug399925.gif";

    48   document.getElementById("content").appendChild(image);

    50   // draw the canvas once

    51   drawCanvas();

    53   // Set the timeout to draw it after discard

    54   setTimeout('drawCanvas(); allDone();', 3000);

    55 }

    57 function drawCanvas()

    58 {

    59     var canvas = document.getElementById('canvas');

    60     var context = canvas.getContext('2d');

    61     var gif = document.getElementById('gif');

    63     context.drawImage(gif, 0, 0);

    64     ok(true, "we got through the drawImage call without an exception being thrown");

    65     pngResults.push(canvas.toDataURL);

    66 }

    68 function allDone()

    69 {

    70     is(pngResults[0], pngResults[1], "got different rendered results");

    71     setImagePref(DISCARD_TIMEOUT_PREF, oldTimeoutPref);

    72     setImagePref(DISCARD_ENABLED_PREF, oldDiscardPref);

    73     SimpleTest.finish();

    74 }

    76 </script>

    77 </pre>

    78 </body>

    79 </html>

The Tor Browser / file revision