Tests that the 2 first parameters of addEventListener() / removeEventListener() are mandatory.

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


PASS addEventListener() threw exception TypeError: Not enough arguments.
PASS addEventListener('load') threw exception TypeError: Not enough arguments.
PASS removeEventListener() threw exception TypeError: Not enough arguments.
PASS removeEventListener('load') threw exception TypeError: Not enough arguments.
PASS addEventListener('load', null) did not throw exception.
PASS addEventListener('load', undefined) did not throw exception.
PASS removeEventListener('load', null) did not throw exception.
PASS removeEventListener('load', undefined) did not throw exception.
PASS successfullyParsed is true

TEST COMPLETE