Include midpoint in tests

dstansby · dstansby · commit 526cb71e2056 · 2023-01-23T15:30:22.000Z
diff --git a/lib/matplotlib/tests/test_colors.py b/lib/matplotlib/tests/test_colors.py
@@ -665,15 +665,15 @@ def test_TwoSlopeNorm_scale():
 def test_TwoSlopeNorm_scaleout_center():
     # test the vmin never goes above vcenter
     norm = mcolors.TwoSlopeNorm(vcenter=0)
-    norm([1, 2, 3, 5])
+    norm([0, 1, 2, 3, 5])
     assert norm.vmin == -5
     assert norm.vmax == 5
 
 
 def test_TwoSlopeNorm_scaleout_center_max():
     # test the vmax never goes below vcenter
     norm = mcolors.TwoSlopeNorm(vcenter=0)
-    norm([-1, -2, -3, -5])
+    norm([0, -1, -2, -3, -5])
     assert norm.vmax == 5
     assert norm.vmin == -5
 
