Tests that self.hasOwnProperty() works in workers On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". self.hasOwnProperty('DedicatedWorkerGlobalScope'): true self.hasOwnProperty('WorkerGlobalScope'): true self.hasOwnProperty('postMessage'): true self.hasOwnProperty('IDBDatabase'): true PASS successfullyParsed is true TEST COMPLETE