add a selection of test cases from oss-fuzz

Author: wiredfool

Tests/test_file_dds.py

@@ -15,6 +15,7 @@
     assert_image_similar,
     assert_image_similar_tofile,
     hopper,
+    timeout_unless_slower_valgrind,
 )
 
 TEST_FILE_DXT1 = "Tests/images/dxt1-rgb-4bbp-noalpha_MipMaps-1.dds"
@@ -540,3 +541,18 @@ def test_save_large_file(tmp_path: Path, pixel_format: str, mode: str) -> None:
     im = hopper(mode).resize((440, 440))
     # should not error in valgrind
     im.save(tmp_path / "img.dds", pixel_format=pixel_format)
+
+
+@timeout_unless_slower_valgrind(1)
+@pytest.mark.parametrize(
+    "test_file",
+    [
+        "Tests/images/timeout-041dd17dfde800360a47a172269df127af138c6b.dds",
+        "Tests/images/timeout-755a4d204f4208e3597ac3391edebee196462bd0.dds",
+        "Tests/images/timeout-52d106579505547091ef69b58341351a37c23e31.dds",
+        "Tests/images/timeout-c60a3d7314213624607bfb3e38d551a8b24a7435.dds",
+    ],
+)
+def test_timeout(test_file) -> None:
+    with Image.open(test_file) as im:
+        im.load()