Test if putImageData gives back the same result as getImageData

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


FAIL imgdata[4] should be 255. Was 0.
PASS imgdata[5] is 0
FAIL imgdata[6] should be 0. Was 255.
PASS imgdata[4] is 0
PASS imgdata[5] is 128
PASS imgdata[6] is 0
FAIL imgdata[4] should be 0. Was 255.
PASS imgdata[5] is 0
FAIL imgdata[6] should be 255. Was 0.
PASS successfullyParsed is true

TEST COMPLETE