Test 1.  Should print OK 1, then OK 2 three times
OK 1
OK 2
OK 2
OK 2
Test 2.  Should print OK 1, then OK 2 three times
OK 1
OK 2
OK 2
OK 2
Test 3-black.  Should print 255    384    100%    100% four times
  255    384    100%    100%
  255    384    100%    100%
  255    384    100%    100%
  255    384    100%    100%
Test 3-white.  Should print 0    320    100%    100% three times
    0    320    100%    100%
    0    320    100%    100%
    0    320    100%    100%