Test noteGrainOn offset rendering.

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

PASS Found all 100 grains.
PASS All 100 grains started at the correct time.
PASS All 100 grains ended at the correct time.
PASS All 100 grains contained the correct data.
PASS noteGrainOn offset rendering tests passed.
PASS successfullyParsed is true

TEST COMPLETE