1 FAIL: flood-opacity from [0.25] to [0.75] was [-0.25] at -1, expected [0]
2 PASS: flood-opacity from [0.25] to [0.75] was [0.125] at -0.25
3 PASS: flood-opacity from [0.25] to [0.75] was [0.25] at 0
4 PASS: flood-opacity from [0.25] to [0.75] was [0.375] at 0.25
5 PASS: flood-opacity from [0.25] to [0.75] was [0.75] at 1
6 PASS: flood-opacity from [0.25] to [0.75] was [0.875] at 1.25
7 FAIL: flood-opacity from [0.25] to [0.75] was [1.25] at 2, expected [1]