| This is a testharness.js-based test. | |
| [FAIL] Optionally, at the user agent's discretion, return a promise rejected with a "NotAllowedError" DOMException. | |
| assert_equals: If it throws, then it must be a NotAllowedError. expected "NotAllowedError" but got "UnknownError" | |
| Harness: the test ran to completion. | |