This is a testharness.js-based test.
[FAIL] Unregister then register does not resolve to the original value even if the registration is in use.
  assert_not_equals: Unregister and register should always create a new registration got disallowed value object "[object ServiceWorkerRegistration]"
[FAIL] Unregister then register does not resurrect the registration
  assert_equals: Registration is new expected null but got object "[object ServiceWorker]"
Harness: the test ran to completion.