TST convert 2-d PIL image

jklymak · jklymak · commit e0fab0d22451 · 2018-02-27T09:30:07.000-08:00
diff --git a/lib/matplotlib/tests/test_image.py b/lib/matplotlib/tests/test_image.py
@@ -511,6 +511,18 @@ def test_nonuniformimage_setnorm():
     im.set_norm(plt.Normalize())
 
 
+@needs_pillow
+def test_jpeg_2d():
+    # smoke test that mode-L pillow images work.
+    imd = np.ones((10, 10), dtype='uint8')
+    for i in range(10):
+        imd[i, :] = np.linspace(0.0, 1.0, 10) * 255
+    im = Image.new('L', (10, 10))
+    im.putdata(imd.flatten())
+    fig, ax = plt.subplots()
+    ax.imshow(im)
+
+
 @needs_pillow
 def test_jpeg_alpha():
     plt.figure(figsize=(1, 1), dpi=300)
