Merge pull request #2675 from radarhere/im

Added test for ImImagePlugin tell()

Tests/test_file_im.py

@@ -15,6 +15,16 @@ class TestFileIm(PillowTestCase):
         self.assertEqual(im.size, (128, 128))
         self.assertEqual(im.format, "IM")
 
+    def test_tell(self):
+        # Arrange
+        im = Image.open(TEST_IM)
+
+        # Act
+        frame = im.tell()
+
+        # Assert
+        self.assertEqual(frame, 0)
+
     def test_n_frames(self):
         im = Image.open(TEST_IM)
         self.assertEqual(im.n_frames, 1)