gecko-dev/layout/base/tests/test_bug607529.html
Daniel Holbert 76f667e72e Bug 1462983: Check for redundant "loaded" messages from opened window, in test_bug607529.html. r=bz
Such messages happen intermittently on Android, presumably from bfcache being
purged due to memory pressure (which would then cause the back() operation
behave like a fresh load).  So on Android, we'll now treat these redundant
messages as a "todo()" failure, to indicate that something went wrong but avoid
turning the testsuite orange.

MozReview-Commit-ID: GkaxB06vL7q

--HG--
extra : rebase_source : 64c0c0a41452d573062774b2300a26aad179b309
2018-07-13 08:38:52 -07:00

90 lines
2.6 KiB
HTML

<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=607529
-->
<head>
<title>Test for Bug 607529</title>
<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.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=607529">Mozilla Bug 607529</a>
<p id="display"></p>
<div id="content" style="display: none">
</div>
<pre id="test">
<script type="application/javascript">
SimpleTest.waitForExplicitFinish();
/* General idea: Open a new window (needed because we don't bfcache
subframes) that uses requestAnimationFrame, navigate it, navigate it
back, and verify that the animations are still running. */
var doneOneLoad = false;
var done = false;
/** Test for Bug 607529 **/
function closeWindowAndFinish() {
w.close();
window.onmessage = null;
SimpleTest.finish();
}
window.onmessage = function(e) {
isnot(e.data, "notcached", "Should never end up not being cached");
if (e.data == "loaded") {
if (!doneOneLoad) {
doneOneLoad = true;
w.location = "file_bug607529-1.html";
} else {
// This is unexpected, but it can happen on Android, probably when
// bfcache gets purged due to memory pressure. Hence, "soft fail" there.
var message = "onload handler shouldn't fire on restore from bfcache";
if (navigator.appVersion.includes("Android")) {
todo(false, message);
} else {
ok(false, message);
}
// In any case, more messages aren't coming, so finish up.
closeWindowAndFinish();
}
}
else if (e.data == "goback") {
w.history.back();
}
else if (e.data == "revived") {
w.postMessage("report", "*");
}
else if (e.data == "callbackHappened") {
// We might get this message more than once, if the other page queues up
// more than one callbackHappened message before we manage to close it.
// Protect against calling SimpleTest.finish() more than once.
if (!done) {
closeWindowAndFinish();
done = true;
}
} else {
try {
var msg = JSON.parse(e.data);
} catch (ex) {
// In case JSON.parse throws, we pause to print the string that it
// choked on, and then resume throwing the exception.
ok(false, "JSON.parse threw, when passed string '" + e.data + "'");
throw ex;
}
if (msg.error) {
window.onerror(msg.msg, msg.url, msg.line);
}
}
};
var w = window.open("file_bug607529.html");
</script>
</pre>
</body>
</html>