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Test Info:
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>Test for bfcache and BroadcastChannel</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<script type="application/javascript">
/*
* The test opens a new window. Then a message 'load' is sent there to load
* another page. If expectedPersisted is false, a dummy message is sent
* through a BroadcastChannel which the first has registered to use.
* That should evict the page from bfcache.
* 'back' message is sent to call history.back().
* The page which is loaded from session history should be persisted if
* expectedPersisted is true.
*/
SimpleTest.waitForExplicitFinish();
var testUrl1 = "testUrl1_bfcache.html";
function executeTest() {
var bc1 = new BroadcastChannel("testUrl1_bfcache");
var bc2 = new BroadcastChannel("testUrl2_bfcache");
bc1.onmessage = function(event) {
if (event.data == "closed") {
info("Closed");
runTest();
return;
}
page1Shown(event.data);
};
bc2.onmessage = function(event) { page2Shown(event.data); };
var counter = 0;
var expectedPersisted = false;
var bc = new BroadcastChannel("a");
function page1Shown(e) {
if (counter == 0) {
ok(!e.persisted, "test page should have been persisted initially");
bc1.postMessage("load");
} else {
is(e.persisted, expectedPersisted, "test page should have been persisted in pageshow");
bc1.postMessage("close");
}
counter++;
}
function page2Shown() {
if (!expectedPersisted) {
SimpleTest.executeSoon(function() {
info("Posting a message.");
bc.postMessage(42);
});
}
SimpleTest.executeSoon(function() {
info("Going back");
bc2.postMessage("back");
});
}
var tests = [
{ expectedPersisted: true },
{ expectedPersisted: false },
];
function runTest() {
if (!tests.length) {
bc.close();
bc1.close();
bc2.close();
SimpleTest.finish();
return;
}
var test = tests.shift();
counter = 0;
expectedPersisted = test.expectedPersisted;
window.open(testUrl1, "", "noopener");
}
// If Fission is disabled, the pref is no-op.
SpecialPowers.pushPrefEnv({set: [["fission.bfcacheInParent", true]]}, () => {
runTest();
});
}
if (isXOrigin) {
// Acquire storage access permission here so that the BroadcastChannel used to
// communicate with the opened windows works in xorigin tests. Otherwise,
// the iframe containing this page is isolated from first-party storage access,
// which isolates BroadcastChannel communication.
SpecialPowers.wrap(document).notifyUserGestureActivation();
SpecialPowers.addPermission("storageAccessAPI", true, window.location.href).then(() => {
SpecialPowers.wrap(document).requestStorageAccess().then(() => {
SpecialPowers.pushPrefEnv({
set: [["privacy.partition.always_partition_third_party_non_cookie_storage", false]]
}).then(() => {
executeTest();
});
});
});
} else {
executeTest();
}
</script>
</body>
</html>