Test 1.  Should produce 1571496937 33838, cksum of testimg.red twice
1571496937 33838
1571496937 33838
Test 2.  Should produce 1926073387 101484
1926073387 101484
Test 3.  Should produce 281226646 481 three times
281226646 481
281226646 481
281226646 481