File 014-Tests-for-tiff-crashes.patch of Package python-Pillow

From 26bf1c352489c9e847ff770cd752e97fda5b82cb Mon Sep 17 00:00:00 2001
From: Andrew Murray <radarhere@users.noreply.github.com>
Date: Wed, 23 Sep 2020 00:14:40 +1000
Subject: [PATCH] Moved CVE images to pillow-depends

---
 Tests/check_tiff_crashes.py |  29 -----------------------------
 Tests/images/crash_1.tif    | Bin 6511 -> 0 bytes
 Tests/images/crash_2.tif    | Bin 6223 -> 0 bytes
 Tests/test_tiff_crashes.py  |  36 ++++++++++++++++++++++++++++++++++++
 4 files changed, 36 insertions(+), 29 deletions(-)
 delete mode 100644 Tests/check_tiff_crashes.py
 delete mode 100644 Tests/images/crash_1.tif
 delete mode 100644 Tests/images/crash_2.tif
 create mode 100644 Tests/test_tiff_crashes.py

diff --git a/Tests/helper.py b/Tests/helper.py
index 5dbdb66..572d6d5 100644
--- a/Tests/helper.py
+++ b/Tests/helper.py
@@ -340,6 +340,11 @@ def on_appveyor():
     return 'APPVEYOR' in os.environ
 
 
+def on_ci():
+    # GitHub Actions and AppVeyor have "CI"
+    return "CI" in os.environ
+
+
 if sys.platform == 'win32':
     IMCONVERT = os.environ.get('MAGICK_HOME', '')
     if IMCONVERT:
diff --git a/Tests/test_tiff_crashes.py b/Tests/test_tiff_crashes.py
new file mode 100644
index 0000000000..9c293e0142
--- /dev/null
+++ b/Tests/test_tiff_crashes.py
@@ -0,0 +1,37 @@
+# Reproductions/tests for crashes/read errors in TiffDecode.c
+
+# When run in Python, all of these images should fail for
+# one reason or another, either as a buffer overrun,
+# unrecognized datastream, or truncated image file.
+# There shouldn't be any segfaults.
+#
+# if run like
+# `valgrind --tool=memcheck pytest test_tiff_crashes.py 2>&1 | grep TiffDecode.c`
+# the output should be empty. There may be Python issues
+# in the valgrind especially if run in a debug Python
+# version.
+
+import pytest
+import errno
+
+from PIL import Image
+
+from helper import on_ci
+
+
+@pytest.mark.parametrize(
+    "test_file", ["Tests/images/crash_1.tif", "Tests/images/crash_2.tif"]
+)
+@pytest.mark.filterwarnings("ignore:Possibly corrupt EXIF data")
+@pytest.mark.filterwarnings("ignore:Metadata warning")
+def test_tiff_crashes(test_file):
+    try:
+        with Image.open(test_file) as im:
+            im.load()
+    except EnvironmentError as e:
+        if e.errno != errno.ENOENT:
+            return
+        if not on_ci():
+            pytest.skip("test image not found")
+            return
+        raise