This test should trigger 'window.onerror', and successfully handle the error. On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". window.onerror: "Uncaught ReferenceError: hahaha_good_luck_finding_me is not defined" at window-onerror-01.html (Line: 14, Column: 9) Stack Trace: ReferenceError: hahaha_good_luck_finding_me is not defined at window-onerror-01.html:14:9 Returning 'true': the error should not be reported in the console as an unhandled exception. PASS successfullyParsed is true TEST COMPLETE