1 files changed, 7 insertions, 2 deletions
diff --git a/Tools/Scripts/webkitpy/layout_tests/port/image_diff_unittest.py b/Tools/Scripts/webkitpy/layout_tests/port/image_diff_unittest.py
index b06756c35..46cc98a11 100755
--- a/Tools/Scripts/webkitpy/layout_tests/port/image_diff_unittest.py
+++ b/Tools/Scripts/webkitpy/layout_tests/port/image_diff_unittest.py
@@ -46,7 +46,12 @@ class FakePort(object):
 
 
 class TestImageDiffer(unittest.TestCase):
-    def test_diff_image(self):
+    def test_diff_image_failed(self):
         port = FakePort(['diff: 100% failed\n'])
         image_differ = ImageDiffer(port)
-        self.assertEquals(image_differ.diff_image('foo', 'bar', 0.1), ('', 100.0))
+        self.assertEquals(image_differ.diff_image('foo', 'bar', 0.1), ('', 100.0, None))
+
+    def test_diff_image_passed(self):
+        port = FakePort(['diff: 0% passed\n'])
+        image_differ = ImageDiffer(port)
+        self.assertEquals(image_differ.diff_image('foo', 'bar', 0.1), (None, 0, None))