tests: ensure rgb image is truly different that argb - refs #1559

mapnik · May 21, 2013 · 21fa4d2 · 21fa4d2
1 parent bd3ba15
commit 21fa4d2
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/tests/python_tests/png_encoding_test.py b/tests/python_tests/png_encoding_test.py
@@ -131,6 +131,7 @@ def test_transparency_levels_aerial():
     im_in = mapnik.Image.open('./images/support/transparency/aerial_rgb.png')
     eq_(len(im.tostring('png')),len(im_in.tostring('png')))
     eq_(len(im.tostring('png:t=0')),len(im_in.tostring('png:t=0')))
+    eq_(len(im.tostring('png:t=0')) == len(im_in.tostring('png')), False)
 
 
 if __name__ == "__main__":