test_sequence_tiff fixed (was not run by selftest.py)

Tests/test_sequence_tiff.py

@@ -6,9 +6,15 @@ TiffImagePlugin.READ_LIBTIFF = True
 
 class TestFileTiff(PillowTestCase):
 
+    def setUp(self):
+        codecs = dir(Image.core)
+
+        if "libtiff_encoder" not in codecs or "libtiff_decoder" not in codecs:
+            self.skipTest("tiff support not available")
+
     def testSequence(self):
         try:
-            im = Image.open('multi.tif')
+            im = Image.open('Tests/images/multi.tif')
             index = 0
             for frame in ImageSequence.Iterator(im):
                 frame.load()
@@ -17,4 +23,8 @@ class TestFileTiff(PillowTestCase):
         except Exception as e:
             self.assertTrue(False, str(e))
             
+if __name__ == '__main__':
+    unittest.main()
+
+# End of file