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<!DOCTYPE html>
<meta charset="utf-8" />
<title>Test Permission garbage collection persistance.</title>
<link rel="help" href="https://github.com/w3c/permissions/pull/256" />
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<body>
<script>
async function createABunchOfGarbage() {
const promises = [];
for (let i = 0; i < 25; i++) {
const promise = new Promise((r) => {
const iframe = document.createElement("iframe");
iframe.onload = () => r(iframe);
iframe.src = "about:blank";
document.body.appendChild(iframe);
});
promises.push(promise);
}
const iframes = await Promise.all(promises);
iframes.forEach((iframe) => iframe.remove());
}
promise_test(async (t) => {
t.add_cleanup(() => {
return test_driver.set_permission({ name: "geolocation" }, "prompt");
});
const eventPromise = new Promise(
async (r) => {
// we create the status here, but it goes out of scope
// at the end of the function. Thus, we assume it will be
// garbage collected.
const status = await navigator.permissions.query({
name: "geolocation",
});
status.addEventListener("change", r);
},
{ once: true }
);
// Maybe got garbage collected.
await createABunchOfGarbage();
// Causes event to fire.
await test_driver.set_permission({ name: "geolocation" }, "granted");
await eventPromise;
}, "Events fire even if the status object is garbage collected");
</script>
</body>
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