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<!DOCTYPE html>
<meta charset="utf-8" />
<title>Permissions API in Worker</title>
<link rel="help" href="https://www.w3.org/TR/permissions/" />
<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>
<script>
const workerScript = `
async function setup() {
const status = await self.navigator.permissions.query({
name: "geolocation",
});
status.addEventListener("change", () => {
postMessage({ event: "change", state: status.state });
});
self.postMessage({ event: "ready", state: status.state });
}
setup();
`;
function messageFrom(worker, message) {
const abortController = new AbortController();
return new Promise((resolve) => {
worker.addEventListener(
"message",
(event) => {
if (event.data.event == message) {
abortController.abort();
resolve(event.data);
}
},
{ signal: abortController.signal }
);
});
}
promise_test(async (t) => {
await test_driver.set_permission({ name: "geolocation" }, "prompt");
const blobUrl = URL.createObjectURL(
new Blob([workerScript], { type: "text/javascript" })
);
const worker = new Worker(blobUrl);
const { state:initialState } = await messageFrom(worker, "ready");
assert_equals(initialState, "prompt", "Worker sees the initial permission state as 'prompt'");
const setPermissionPromise = test_driver.set_permission({ name: "geolocation" }, "granted");
const changePromise = messageFrom(worker, "change");
const [{state:changedState}] = await Promise.all([messagePromise, setPermissionPromise]);
assert_equals(
changedState,
"granted",
"Worker detects the permission state change to 'granted'"
);
}, "Worker can query the 'geolocation' permission and detect a transition to 'granted'");
</script>
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