| Tests that an exception is thrown when the value returned in the beforeunload callback cannot be converted to a String | |
| On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". | |
| PASS Exception was thrown | |
| PASS testMessage is "Uncaught Exception in toString()" | |
| PASS successfullyParsed is true | |
| TEST COMPLETE | |