mozilla-central/docshell/test/navigation/test_bug1699721.html (file symbol)

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Test Info: Warnings

<!DOCTYPE html>
<html>
<head>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<pre id="test">
<script type="text/javascript">
add_task(async function() {
// Induce a process switching behavior for example.com
// with isolateHighValue isolation strategy
// (because we test specifically process switching behavior here)
await SpecialPowers.pushPermissions([
{
type: "highValueCOOP",
allow: SpecialPowers.Ci.nsIPermissionManager.ALLOW_ACTION,
context: "https://example.com",
}
]);
let popup = window.open("blank.html");
info("opened popup");
await new Promise(resolve => {
popup.addEventListener("load", resolve, { once: true });
});
info("popup blank.html loaded");
let tell_opener = new URL("file_tell_opener.html", location.href);
// eslint-disable-next-line @microsoft/sdl/no-insecure-url
let xorigin_url = new URL(tell_opener.pathname, "https://example.com");
let resolveStartedUnload;
let startedUnload = new Promise(resolve => {
resolveStartedUnload = resolve;
});
let didFinishUnload = false;
let finishUnload = false;
popup.addEventListener("unload", function() {
resolveStartedUnload();
try {
// Spin a nested event loop in unload until we set `finishUnload`.
SpecialPowers.Services.tm.spinEventLoopUntil(
"Test(test_switch_back_nested.html)", () => finishUnload);
} finally {
info("exiting from unload nested event loop...");
didFinishUnload = true;
}
});
info("wait for message from popup");
let messagePromise = new Promise(resolve => {
addEventListener("message", () => {
resolve();
}, { once: true });
});
popup.location = xorigin_url.href;
await messagePromise;
info("popup loaded, ensuring we're in unload");
await startedUnload;
is(didFinishUnload, false, "unload shouldn't have finished");
let switchStarted = SpecialPowers.spawnChrome([], async () => {
await new Promise(resolve => {
async function observer(subject, topic) {
is(topic, "http-on-examine-response");
let uri = subject.QueryInterface(Ci.nsIChannel).URI;
if (!uri.filePath.endsWith("file_tell_opener.html")) {
return;
}
Services.obs.removeObserver(observer, "http-on-examine-response");
// spin the event loop a few times to ensure we resolve after the process switch
for (let i = 0; i < 10; ++i) {
await new Promise(res => Services.tm.dispatchToMainThread(res));
}
info("resolving!");
resolve();
}
Services.obs.addObserver(observer, "http-on-examine-response");
});
});
info("Navigating back to the current process");
await SpecialPowers.spawn(popup, [tell_opener.href], (href) => {
content.location.href = href;
});
let messagePromise2 = new Promise(resolve => {
addEventListener("message", () => {
resolve();
}, { once: true });
});
info("Waiting for the process switch to start");
await switchStarted;
// Finish unloading, and wait for the unload to complete
is(didFinishUnload, false, "unload shouldn't be finished");
finishUnload = true;
await new Promise(resolve => setTimeout(resolve, 0));
is(didFinishUnload, true, "unload should be finished");
info("waiting for navigation to complete");
await messagePromise2;
info("closing popup");
popup.close();
ok(true, "Didn't crash");
});
</script>
</pre>
</body>
</html>