| Series of tests to ensure correct behaviour on negative source/destination of a HTMLCanvasElement | |
| On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". | |
| PASS imgdata[4] is 0 | |
| PASS imgdata[5] is 255 | |
| PASS imgdata[6] is 0 | |
| PASS successfullyParsed is true | |
| TEST COMPLETE | |