Ignore np 1.16 warning

ianthomas23 · ianthomas23 · commit 5a6d0c141ffe · 2021-02-18T09:26:27.000Z
diff --git a/lib/matplotlib/tests/test_axes.py b/lib/matplotlib/tests/test_axes.py
@@ -1003,13 +1003,19 @@ def test_fill_between_interpolate_nan():
     y1 = np.asarray([8, 18, np.nan, 18, 8, 18, 24, 18, 8, 18])
     y2 = np.asarray([18, 11, 8, 11, 18, 26, 32, 30, np.nan, np.nan])
 
+    # numpy 1.16 issues warning 'invalid value encountered in greater_equal'
+    # for comparisons that include nan.
+    with np.errstate(invalid='ignore'):
+        greater2 = y2 >= y1
+        greater1 = y1 >= y2
+
     fig, ax = plt.subplots()
 
     ax.plot(x, y1, c='k')
     ax.plot(x, y2, c='b')
-    ax.fill_between(x, y1, y2, where=y2 >= y1, facecolor="green",
+    ax.fill_between(x, y1, y2, where=greater2, facecolor="green",
                     interpolate=True, alpha=0.5)
-    ax.fill_between(x, y1, y2, where=y2 <= y1, facecolor="red",
+    ax.fill_between(x, y1, y2, where=greater1, facecolor="red",
                     interpolate=True, alpha=0.5)
 
 
