[skimage.io.tests] add truncated jpg imread tests

skimage/io/tests/test_imread.py

@@ -37,6 +37,11 @@ def test_imread_palette():
     img = imread(os.path.join(data_dir, 'palette_color.png'))
     assert img.ndim == 3
 
+@skipif(not imread_available)
+def test_imread_truncated_jpg():
+    assert_raises((RuntimeError, ValueError),
+                  sio.imread,
+                  os.path.join(si.data_dir, 'truncated.jpg'))
 
 @skipif(not imread_available)
 def test_bilevel():

skimage/io/tests/test_pil.py

@@ -95,6 +95,10 @@ def test_repr_png():
 
     assert np.all(original_img == round_trip)
 
+@skipif(not PIL_available)
+def test_imread_truncated_jpg():
+    assert_raises((IOError, ValueError), imread,
+                  os.path.join(data_dir, 'truncated.jpg'))
 
 # Big endian images not correctly loaded for PIL < 1.1.7
 # Renable test when PIL 1.1.7 is more common.

skimage/io/tests/test_simpleitk.py

@@ -51,6 +51,12 @@ def test_bilevel():
     np.testing.assert_array_equal(img, expected)
 
 
+@skipif(not sitk_available)
+def test_imread_truncated_jpg():
+    assert_raises((RuntimeError, ValueError),
+                  sio.imread,
+                  os.path.join(si.data_dir, 'truncated.jpg'))
+
 @skipif(not sitk_available)
 def test_imread_uint16():
     expected = np.load(os.path.join(data_dir, 'chessboard_GRAY_U8.npy'))