Source code
Revision control
Copy as Markdown
Other Tools
<!DOCTYPE html>
<html>
<title>Child context test(s)</title>
<head>
<script src="/resources/testharness.js"></script>
<script src="testHelpers.js"></script>
</head>
<body>
<div id="log"></div>
<script>
const channel = new BroadcastChannel("Coordinate writables");
let triggered = false;
channel.onmessage = e => {
if ("Create writable in the second window" === e.data) {
triggered = true;
}
};
channel.postMessage("Second window ready!");
promise_test(async t => {
try {
const maxWaitMs = 2000;
await waitUntil(() => { return triggered; }, maxWaitMs);
assert_true(triggered, "Did we receive a trigger?");
const dir = await navigator.storage.getDirectory();
const opts = { create: true };
const file = await dir.getFileHandle('funky-file-handle', opts);
let writable = await file.createWritable({});
t.add_cleanup(async () => { await writable.close(); });
assert_true(!!writable, "Did we receive a writable?");
channel.postMessage("Success");
} catch(err) {
channel.postMessage(err.message);
throw err;
}
});
</script>
</body>
</html>