This tests that passing in the wrong type of data won't crash speech synthesis code

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".


PASS speechSynthesis.speak('Hello World') threw exception TypeError: Argument 1 ('utterance') to SpeechSynthesis.speak must be an instance of SpeechSynthesisUtterance.
PASS x.voice = "asdf" threw exception TypeError: The SpeechSynthesisUtterance.voice attribute must be an instance of SpeechSynthesisVoice.
PASS successfullyParsed is true

TEST COMPLETE