<!
DOCTYPE HTML>
<
html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=907503
-->
<
head>
<
title>Test for Bug 907503</
title>
<
script src=
"/tests/SimpleTest/SimpleTest.js"></
script>
<
script src=
"/tests/SimpleTest/WindowSnapshot.js"></
script>
<
script type=
"application/javascript" src=
"imgutils.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=907503">Mozill
a Bug 907503</a>
<p id="display"></p>
<div id="content">
<div id="referenceDiv" style="height: 100px; width: 100px;
display: none; background: lime">
<
img>
</
div>
<
pre id=
"test">
<
script type=
"application/javascript">
/** Test for Bug 907503**/
SimpleTest.requestFlakyTimeout(
"Early failure timeout");
SimpleTest.waitForExplicitFinish();
const FAILURE_TIMEOUT = 120000; // Fail early after 120 seconds (2 minutes)
const Cc = SpecialPowers.Cc;
const Ci = SpecialPowers.Ci;
const gImg = document.getElementsByTagName(
"img")[0];
var gMyDecoderObserver; // value will be set in main()
var gReferenceSnapshot; // value will be set in takeReferenceSnapshot()
var gOnFrameUpdateCounter = 0;
var gIsTestFinished = false;
function takeReferenceSnapshot() {
// Take a snapshot of the initial (essentially blank) page
let blankSnapshot = snapshotWindow(window, false);
// Show reference
div, & take a snapshot
let referenceDiv = document.getElementById(
"referenceDiv");
referenceDiv.
style.display =
"block";
gReferenceSnapshot = snapshotWindow(window, false);
ok(compareSnapshots(blankSnapshot, gReferenceSnapshot, false)[0],
"reference snapshot shouldn't match blank page snapshot");
// Re-hide reference
div, and take another snapshot to be sure it
's gone
referenceDiv.
style.display =
"none";
let blankSnapshot2 = snapshotWindow(window, false);
ok(compareSnapshots(blankSnapshot, blankSnapshot2, true)[0],
"reference div should disappear when it becomes display:none");
}
function myOnFrameUpdate() {
if (gIsTestFinished) {
return;
}
gOnFrameUpdateCounter++;
ok(true,
"myOnFrameUpdate called");
let currentSnapshot = snapshotWindow(window, false);
if (compareSnapshots(currentSnapshot, gReferenceSnapshot, true)[0]) {
// SUCCESS!
ok(true,
"Animated image looks correct, " +
"at call #" + gOnFrameUpdateCounter +
" to myOnFrameUpdate");
cleanUpAndFinish();
}
}
function failTest() {
if (gIsTestFinished) {
return;
}
ok(false,
"timing out after " + FAILURE_TIMEOUT +
"ms. " +
"Animated image still doesn't look correct, " +
"after call #" + gOnFrameUpdateCounter +
" to myOnFrameUpdate");
cleanUpAndFinish();
}
function cleanUpAndFinish() {
// On the off chance that failTest and myOnFrameUpdate are triggered
// back-to-back, use a flag to prevent multiple calls to SimpleTest.finish.
if (gIsTestFinished) {
return;
}
let imgLoadingContent = SpecialPowers.wrap(gImg);
imgLoadingContent.removeObserver(gMyDecoderObserver);
SimpleTest.finish();
gIsTestFinished = true;
}
function main() {
takeReferenceSnapshot();
// Create, customize & attach decoder observer
var observer = new ImageDecoderObserverStub();
observer.frameUpdate = myOnFrameUpdate;
gMyDecoderObserver =
Cc[
"@mozilla.org/image/tools;1"].getService(Ci.imgITools)
.createScriptedObserver(SpecialPowers.wrapCallbackObject(observer));
let imgLoadingContent = SpecialPowers.wrap(gImg);
imgLoadingContent.addObserver(gMyDecoderObserver);
// We want to test the cold loading behavior, so clear cache in case an
// earlier test got our image in there already.
clearAllImageCaches();
// kick off image-loading! myOnFrameUpdate handles the rest.
gImg.setAttribute(
"src",
"lime-anim-100x100-2.svg");
// In case something goes wrong, fail earlier than mochitest timeout,
// and with more information.
setTimeout(failTest, FAILURE_TIMEOUT);
}
window.onload = main;
</
script>
</
pre>
</
body>
</
html>
