mozilla-release/testing/web-platform/tests/payment-handler/same-object-attributes.https.html

<!DOCTYPE html>
<meta charset=utf-8>
<link rel="help" href="https://w3c.github.io/payment-handler/">
<title>Test for [SameObject] attributes</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/service-workers/service-worker/resources/test-helpers.sub.js"></script>
<script>

promise_test(async t => {
  const registration = await service_worker_unregister_and_register(
      t, 'basic-card.js', 'payment-app/');
  await wait_for_state(t, registration.installing, 'activated');

  assert_equals(registration.paymentManager, registration.paymentManager);
  assert_equals(registration.paymentManager.instruments, registration.paymentManager.instruments);
});

</script>