Test passes if the 2 diagrams are
identical
and with
no red
.
1 2 3 4 5 6 7 8 9 0 1 2 3
7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4
8 9 0 1 2 3 4 5 6 7 8 9 0