Xfail timouts in Valgrind tests

* ensure that the env variable is set in the makefile

Author: wiredfool

Makefile

@@ -95,14 +95,14 @@ test:
 .PHONY: valgrind
 valgrind:
 	python3 -c "import pytest_valgrind" > /dev/null 2>&1 || python3 -m pip install pytest-valgrind
-	PYTHONMALLOC=malloc valgrind --suppressions=Tests/oss-fuzz/python.supp --leak-check=no \
+	PILLOW_VALGRIND_TEST=true PYTHONMALLOC=malloc valgrind --suppressions=Tests/oss-fuzz/python.supp --leak-check=no \
             --log-file=/tmp/valgrind-output \
             python3 -m pytest --no-memcheck -vv --valgrind --valgrind-log=/tmp/valgrind-output
 
 .PHONY: valgrind-leak
 valgrind-leak:
 	python3 -c "import pytest_valgrind" > /dev/null 2>&1 || python3 -m pip install pytest-valgrind
-	PYTHONMALLOC=malloc valgrind --suppressions=Tests/oss-fuzz/python.supp \
+	PILLOW_VALGRIND_TEST=true PYTHONMALLOC=malloc valgrind --suppressions=Tests/oss-fuzz/python.supp \
 	    --leak-check=full --show-leak-kinds=definite --errors-for-leak-kinds=definite \
             --log-file=/tmp/valgrind-output \
             python3 -m pytest -vv --valgrind --valgrind-log=/tmp/valgrind-output Tests/

Tests/test_file_jpeg.py

@@ -1034,6 +1034,11 @@ def test_save_xmp(self, tmp_path: Path) -> None:
             im.save(f, xmp=b"1" * 65505)
 
     @pytest.mark.timeout(timeout=1)
+    @pytest.mark.xfail(
+        "PILLOW_VALGRIND_TEST" in os.environ,
+        reason="Valgrind is slower",
+        raises=TimeoutError
+    )
     def test_eof(self, monkeypatch: pytest.MonkeyPatch) -> None:
         # Even though this decoder never says that it is finished
         # the image should still end when there is no new data

Tests/test_imagefontpil.py

@@ -2,6 +2,7 @@
 
 import struct
 from io import BytesIO
+import os
 
 import pytest
 
@@ -73,6 +74,11 @@ def test_decompression_bomb() -> None:
 
 
 @pytest.mark.timeout(4)
+@pytest.mark.xfail(
+    "PILLOW_VALGRIND_TEST" in os.environ,
+    reason="Valgrind is slower",
+    raises=TimeoutError
+)
 def test_oom() -> None:
     glyph = struct.pack(
         ">hhhhhhhhhh", 1, 0, -32767, -32767, 32767, 32767, -32767, -32767, 32767, 32767