From 432677740d01996fe0e606a7616923699a4cb3bd Mon Sep 17 00:00:00 2001
From: Glenn Maynard <glenn@zewt.org>
Date: Tue, 23 Oct 2018 22:34:29 -0500
Subject: [PATCH] Add a test for an image that works with other GIF decoders.

This test is fixed by the next commits.
---
 Tests/images/transparent_dispose.gif | Bin 0 -> 95 bytes
 Tests/test_file_gif.py               |  11 +++++++++++
 2 files changed, 11 insertions(+)
 create mode 100644 Tests/images/transparent_dispose.gif

diff --git a/Tests/images/transparent_dispose.gif b/Tests/images/transparent_dispose.gif
new file mode 100644
index 0000000000000000000000000000000000000000..92b615543de7a4c82a3a3449e27b81d8efa7d4fe
GIT binary patch
literal 95
zcmZ?wbhEHbWM*Jwn8?7u@LvLmfiw^({$ye0Vqjv>0dYX`3`|TRAs}H+BQ)Wb0I+JX
PFi;&(Em*Y=BZD;nY>Eoh

literal 0
HcmV?d00001

diff --git a/Tests/test_file_gif.py b/Tests/test_file_gif.py
index 556ecec6b..9267fb567 100644
--- a/Tests/test_file_gif.py
+++ b/Tests/test_file_gif.py
@@ -337,6 +337,17 @@ def test_dispose_background():
             pass
 
 
+def test_transparent_dispose():
+    img = Image.open("Tests/images/transparent_dispose.gif")
+
+    expected_colors = [(2, 1, 2), (0, 1, 0), (2, 1, 2)]
+    for frame in range(3):
+        img.seek(frame)
+        for x in range(3):
+            color = img.getpixel((x, 0))
+            assert color == expected_colors[frame][x]
+
+
 def test_dispose_previous():
     with Image.open("Tests/images/dispose_prev.gif") as img:
         try: