Test that toDataURL(mimeType) ignores the case of 'mimeType'.

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


PASS tryMimeType('image/png') is 'image/png'
PASS tryMimeType('iMAge/Png') is 'image/png'
PASS tryMimeType('IMAGE/PNG') is 'image/png'
PASS tryMimeType('image/jpeg') is 'image/jpeg'
PASS tryMimeType('imAgE/jPEg') is 'image/jpeg'
PASS tryMimeType('IMAGE/JPEG') is 'image/jpeg'
PASS successfullyParsed is true

TEST COMPLETE