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chromium/third_party/blink/web_tests/external/wpt/service-workers/service-worker/registration-basic.https.html 

<!DOCTYPE html>
<title>Service Worker: Registration (basic)</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/test-helpers.sub.js"></script>
<script>
const script = 'resources/registration-worker.js';

promise_test(async (t) => {
  const scope = 'resources/registration/normal';
  const registration = await navigator.serviceWorker.register(script, {scope});
  t.add_cleanup(() => registration.unregister());
  assert_true(
    registration instanceof ServiceWorkerRegistration,
    'Successfully registered.');
}, 'Registering normal scope');

promise_test(async (t) => {
  const scope = 'resources/registration/scope-with-fragment#ref';
  const registration = await navigator.serviceWorker.register(script, {scope});
  t.add_cleanup(() => registration.unregister());
  assert_true(
    registration instanceof ServiceWorkerRegistration,
    'Successfully registered.');
  assert_equals(
    registration.scope,
    normalizeURL('resources/registration/scope-with-fragment'),
    'A fragment should be removed from scope');
}, 'Registering scope with fragment');

promise_test(async (t) => {
  const scope = 'resources/';
  const registration = await navigator.serviceWorker.register(script, {scope})
  t.add_cleanup(() => registration.unregister());
  assert_true(
    registration instanceof ServiceWorkerRegistration,
    'Successfully registered.');
}, 'Registering same scope as the script directory');
</script>