The Tor Browser: image/test/mochitest/test_animation_operators.html@ac0c01689b40 (annotated)

image/test/mochitest/test_animation_operators.html@ac0c01689b40 (annotated)

image/test/mochitest/test_animation_operators.html

Thu, 15 Jan 2015 15:59:08 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 15 Jan 2015 15:59:08 +0100
branch: TOR_BUG_9701
changeset 10: ac0c01689b40
permissions: -rw-r--r--

Implement a real Private Browsing Mode condition by changing the API/ABI;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

 <!DOCTYPE HTML>
 <html>
 <!--
 https://bugzilla.mozilla.org/show_bug.cgi?id=936720
 -->
 <head>
   <title>Test for Bug 936720</title>
   <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
   <script type="application/javascript" src="/tests/SimpleTest/WindowSnapshot.js"></script>
   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
 </head>
 <body>
 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=936720">Mozilla Bug 936720</a>
 <pre id="test">
 <script type="application/javascript">
 /** Test for Bug 936720 **/
 // Because there is no event telling us when an animated image finishes
 // animating, tests for the operators used by animated GIFs and PNGs
 // require that we poll until we get the correct result. A fixed timeout
 // can easily result in intermittent failures on tests running in VMs.
 // (Note that we do _not_ poll the reference, so it must not be animated.)
 var gTests = [
   // IMPORTANT NOTE: For these tests, the test and reference are not
   // snapshotted in the same way.  The REFERENCE (second file) is
   // assumed to be complete when loaded, but we poll the TEST
   // (first file) until the test passes.
   // Tests of the allowed disposal operators for both GIF and APNG: keep, clear,
   // and restore previous.
   "== green-background.html?clear.gif green.png",
   "== green-background.html?clear.png green.png",
   "== keep.gif green.png",
   "== keep.png green.png",
   "== restore-previous.gif green.png",
   "== restore-previous.png green.png",
   // Tests of the blending/compositing operators that only APNG supports.
   "== over.png grey.png",
   "!= source.png grey.png",
   "== bug900200.png bug900200-ref.png",
   // Test of subframe updates.
   "== clear2.gif clear2-results.gif",
 ];
 // Maintain a reference count of how many things we're waiting for until
 // we can say the tests are done.
 var gDelayCount = 0;
 function AddFinishDependency()
   { ++gDelayCount; }
 function RemoveFinishDependency()
   { if (--gDelayCount == 0) SimpleTest.finish(); }
 // We record the maximum number of times we had to look at a test before
 // it switched to the passing state (though we assume it's 10 to start
 // rather than 0 so that we have a reasonable default).  Then we make a
 // test "time out" if it takes more than gTimeoutFactor times that
 // amount of time.  This allows us to report a test failure rather than
 // making a test failure just show up as a timeout.
 var gMaxPassingTries = 10;
 var gTimeoutFactor = 10;
 function takeSnapshot(iframe_element)
 {
   return snapshotWindow(iframe_element.contentWindow, false);
 }
 function passes(op, shot1, shot2)
 {
   var [correct, s1, s2] = compareSnapshots(shot1, shot2, op == "==");
   return correct;
 }
 function startTest(i)
 {
   var testLine = gTests[i];
   var splitData = testLine.split(" ");
   var testData =
     { op: splitData[0], test: splitData[1], reference: splitData[2] };
   var tries = 0;
   // Maintain state specific to this test in the closure exposed to all
   // the functions nested inside this one.
   function startIframe(url)
   {
     var element = document.createElement("iframe");
     element.addEventListener("load", handleLoad, false);
     // Smaller than normal reftests, but enough for these.
     element.setAttribute("style", "width: 100px; height: 100px");
     element.setAttribute("frameborder", "0");
     element.setAttribute("scrolling", "no");
     element.src = url;
     document.body.appendChild(element);
     function handleLoad(event)
     {
       iframe.loaded = true;
       if (iframe == reference) {
         reference.snapshot = takeSnapshot(element);
       }
       var other = (iframe == test) ? reference : test;
       if (other.loaded) {
         setTimeout(checkTest, 100);
       }
     }
     function checkTest()
     {
       var test_snapshot = takeSnapshot(test.element);
       if (passes(testData.op, test_snapshot, reference.snapshot)) {
         if (tries > gMaxPassingTries) {
           gMaxPassingTries = tries;
         }
         report(true);
       } else {
         ++tries;
         if (tries > gMaxPassingTries * gTimeoutFactor) {
           info("Giving up after " + tries + " tries, " +
                "maxp=" + gMaxPassingTries +
                "fact=" + gTimeoutFactor);
           report(false);
         } else {
           // The animation might not have finished.  Try again in 100ms.
           setTimeout(checkTest, 100);
         }
       }
     }
     function report(result)
     {
       ok(result, "(" + i + ") " +
                  testData.op + " " + testData.test + " " + testData.reference);
       RemoveFinishDependency();
     }
     var iframe = { element: element, loaded: false };
     return iframe;
   }
   AddFinishDependency();
   var test = startIframe(testData.test);
   var reference = startIframe(testData.reference);
 }
 SimpleTest.waitForExplicitFinish();
 // Run the tests.
 for (var i = 0; i < gTests.length; ++i) {
   startTest(i);
 }
 </script>
 </pre>
 </body>
 </html>

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image/test/mochitest/test_animation_operators.html@ac0c01689b40 (annotated)

image/test/mochitest/test_animation_operators.html