This is a testharness.js-based test. [FAIL] Test various invalid input cases for setAppBadge() promise_test: Unhandled rejection with value: object "TypeError: navigator.setAppBadge is not a function" [FAIL] Sequential badge operations work correctly promise_test: Unhandled rejection with value: object "TypeError: navigator.setAppBadge is not a function" Harness: the test ran to completion.