This is a testharness.js-based test.
[FAIL] The same request cannot be shown multiple times.
  promise_test: Unhandled rejection with value: object "InvalidStateError: Failed to execute 'abort' on 'PaymentRequest': No show() or retry() in progress, so nothing to abort"
[FAIL] Aborting a request before it is shown doesn't prevent it from being shown later.
  promise_test: Unhandled rejection with value: object "InvalidStateError: Failed to execute 'abort' on 'PaymentRequest': No show() or retry() in progress, so nothing to abort"
Harness: the test ran to completion.