This test makes sure the exception stack has line number information. On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". PASS result is "LayoutTests/fast/js/script-tests/exception-line-number.js:6,LayoutTests/fast/js/script-tests/exception-line-number.js:11" PASS result is "LayoutTests/fast/js/script-tests/exception-line-number.js:36" PASS successfullyParsed is true TEST COMPLETE