2008-03-29 06:53:25 +00:00
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<!DOCTYPE HTML>
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<html>
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<!--
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https://bugzilla.mozilla.org/show_bug.cgi?id=399925
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-->
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<head>
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<title>Test for Bug 399925</title>
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<script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
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2010-07-13 17:30:39 +00:00
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<script type="text/javascript" src="imgutils.js"></script>
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2008-03-29 06:53:25 +00:00
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<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
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</head>
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2010-07-13 17:30:39 +00:00
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<body>
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2008-03-29 06:53:25 +00:00
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<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=399925">Mozilla Bug 399925</a>
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<p id="display"></p>
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<div id="content" style="display: none">
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<img src="bug399925.gif" id="gif" />
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<canvas id="canvas" width="100" height="100"> </canvas>
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</div>
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<pre id="test">
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<script class="testbody" type="text/javascript">
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2010-07-13 17:30:39 +00:00
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/** Test for Bug 399925. **/
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var pngResults = new Array();
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var oldTimeoutPref;
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var oldDiscardPref;
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2008-03-29 06:53:25 +00:00
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SimpleTest.waitForExplicitFinish();
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2010-07-13 17:30:39 +00:00
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window.onload = runTest;
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2008-03-29 06:53:25 +00:00
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2010-07-13 17:30:39 +00:00
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function runTest()
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{
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// Get the old discard timeout
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oldTimeoutPref = getImagePref(DISCARD_TIMEOUT_PREF);
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// We're testing discarding here, so we should make sure it's flipped on
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oldDiscardPref = getImagePref(DISCARD_ENABLED_PREF);
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// Enable Discarding
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setImagePref(DISCARD_ENABLED_PREF, true);
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// Sets the discard timer to 500ms so we don't have to wait so long. The
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// actual time is nondeterministic, but is bounded by 2 * timer = 1 second.
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setImagePref(DISCARD_TIMEOUT_PREF, 1000);
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// Create the image _after_ setting the discard timer pref
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var image = new Image();
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image.setAttribute("id", "gif");
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image.src = "bug399925.gif";
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document.getElementById("content").appendChild(image);
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// draw the canvas once
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drawCanvas();
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// Set the timeout to draw it after discard
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setTimeout('drawCanvas(); allDone();', 3000);
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}
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2008-03-29 06:53:25 +00:00
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function drawCanvas()
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{
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var canvas = document.getElementById('canvas');
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var context = canvas.getContext('2d');
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var gif = document.getElementById('gif');
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context.drawImage(gif, 0, 0);
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ok(true, "we got through the drawImage call without an exception being thrown");
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pngResults.push(canvas.toDataURL);
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}
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function allDone()
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{
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is(pngResults[0], pngResults[1], "got different rendered results");
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2010-07-13 17:30:39 +00:00
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setImagePref(DISCARD_TIMEOUT_PREF, oldTimeoutPref);
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setImagePref(DISCARD_ENABLED_PREF, oldDiscardPref);
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2008-03-29 06:53:25 +00:00
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SimpleTest.finish();
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}
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</script>
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</pre>
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</body>
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</html>
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