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<!DOCTYPE html>
<title>Service Worker: Workers should have their own unique client Id</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/test-helpers.sub.js"></script>
<body>
<script>
// Get the iframe client ID by calling postMessage() on its controlling
// worker. This will cause the service worker to post back the
// MessageEvent.source.id value.
function getFrameClientId(frame) {
return new Promise(resolve => {
let mc = new MessageChannel();
frame.contentWindow.navigator.serviceWorker.controller.postMessage(
'echo-client-id', [mc.port2]);
mc.port1.onmessage = evt => {
resolve(evt.data);
};
});
}
// Get the worker client ID by creating a worker that performs an intercepted
// fetch(). The synthetic fetch() response will contain the FetchEvent.clientId
// value. This is then posted back to here.
function getWorkerClientId(frame) {
return new Promise(resolve => {
let w = new frame.contentWindow.Worker('worker-echo-client-id.js');
w.onmessage = evt => {
resolve(evt.data);
};
});
}
promise_test(async function(t) {
const script = './resources/worker-client-id-worker.js';
const scope = './resources/worker-client-id';
const frame = scope + '/frame.html';
let reg = await navigator.serviceWorker.register(script, { scope });
t.add_cleanup(async _ => await reg.unregister());
await wait_for_state(t, reg.installing, 'activated');
let f = await with_iframe(frame);
t.add_cleanup(_ => f.remove());
let frameClientId = await getFrameClientId(f);
assert_not_equals(frameClientId, null, 'frame client id should exist');
let workerClientId = await getWorkerClientId(f);
assert_not_equals(workerClientId, null, 'worker client id should exist');
assert_not_equals(frameClientId, workerClientId,
'frame and worker client ids should be different');
}, 'Verify workers have a unique client id separate from their owning documents window');
</script>
</body>
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