Run slow tests on valgrind, but without timeout (#8975)

Tests/helper.py

@@ -161,6 +161,12 @@ def assert_tuple_approx_equal(
             pytest.fail(msg + ": " + repr(actuals) + " != " + repr(targets))
 
 
+def timeout_unless_slower_valgrind(timeout: float) -> pytest.MarkDecorator:
+    if "PILLOW_VALGRIND_TEST" in os.environ:
+        return pytest.mark.pil_noop_mark()
+    return pytest.mark.timeout(timeout)
+
+
 def skip_unless_feature(feature: str) -> pytest.MarkDecorator:
     reason = f"{feature} not available"
     return pytest.mark.skipif(not features.check(feature), reason=reason)

Tests/test_file_eps.py

@@ -15,6 +15,7 @@ from .helper import (
     is_win32,
     mark_if_feature_version,
     skip_unless_feature,
+    timeout_unless_slower_valgrind,
 )
 
 HAS_GHOSTSCRIPT = EpsImagePlugin.has_ghostscript()
@@ -398,7 +399,7 @@ def test_emptyline() -> None:
     assert image.format == "EPS"
 
 
-@pytest.mark.timeout(timeout=5)
+@timeout_unless_slower_valgrind(5)
 @pytest.mark.parametrize(
     "test_file",
     ["Tests/images/eps/timeout-d675703545fee17acab56e5fec644c19979175de.eps"],

Tests/test_file_fli.py

@@ -7,7 +7,12 @@ import pytest
 
 from PIL import FliImagePlugin, Image, ImageFile
 
-from .helper import assert_image_equal, assert_image_equal_tofile, is_pypy
+from .helper import (
+    assert_image_equal,
+    assert_image_equal_tofile,
+    is_pypy,
+    timeout_unless_slower_valgrind,
+)
 
 # created as an export of a palette image from Gimp2.6
 # save as...-> hopper.fli, default options.
@@ -189,7 +194,7 @@ def test_seek() -> None:
         "Tests/images/timeout-bff0a9dc7243a8e6ede2408d2ffa6a9964698b87.fli",
     ],
 )
-@pytest.mark.timeout(timeout=3)
+@timeout_unless_slower_valgrind(3)
 def test_timeouts(test_file: str) -> None:
     with open(test_file, "rb") as f:
         with Image.open(f) as im:

Tests/test_file_jpeg.py

@@ -32,6 +32,7 @@ from .helper import (
     is_win32,
     mark_if_feature_version,
     skip_unless_feature,
+    timeout_unless_slower_valgrind,
 )
 
 ElementTree: ModuleType | None
@@ -1033,7 +1034,7 @@ class TestFileJpeg:
         with pytest.raises(ValueError):
             im.save(f, xmp=b"1" * 65505)
 
-    @pytest.mark.timeout(timeout=1)
+    @timeout_unless_slower_valgrind(1)
     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_file_pdf.py

@@ -13,7 +13,12 @@ import pytest
 
 from PIL import Image, PdfParser, features
 
-from .helper import hopper, mark_if_feature_version, skip_unless_feature
+from .helper import (
+    hopper,
+    mark_if_feature_version,
+    skip_unless_feature,
+    timeout_unless_slower_valgrind,
+)
 
 
 def helper_save_as_pdf(tmp_path: Path, mode: str, **kwargs: Any) -> str:
@@ -339,8 +344,7 @@ def test_pdf_append_to_bytesio() -> None:
     assert len(f.getvalue()) > initial_size
 
 
-@pytest.mark.timeout(1)
-@pytest.mark.skipif("PILLOW_VALGRIND_TEST" in os.environ, reason="Valgrind is slower")
+@timeout_unless_slower_valgrind(1)
 @pytest.mark.parametrize("newline", (b"\r", b"\n"))
 def test_redos(newline: bytes) -> None:
     malicious = b" trailer<<>>" + newline * 3456

Tests/test_file_tiff.py

@@ -26,6 +26,7 @@ from .helper import (
     hopper,
     is_pypy,
     is_win32,
+    timeout_unless_slower_valgrind,
 )
 
 ElementTree: ModuleType | None
@@ -988,7 +989,7 @@ class TestFileTiff:
             with pytest.raises(OSError):
                 im.load()
 
-    @pytest.mark.timeout(6)
+    @timeout_unless_slower_valgrind(6)
     @pytest.mark.filterwarnings("ignore:Truncated File Read")
     def test_timeout(self, monkeypatch: pytest.MonkeyPatch) -> None:
         with Image.open("Tests/images/timeout-6646305047838720") as im:
@@ -1001,7 +1002,7 @@ class TestFileTiff:
             "Tests/images/oom-225817ca0f8c663be7ab4b9e717b02c661e66834.tif",
         ],
     )
-    @pytest.mark.timeout(2)
+    @timeout_unless_slower_valgrind(2)
     def test_oom(self, test_file: str) -> None:
         with pytest.raises(UnidentifiedImageError):
             with pytest.warns(UserWarning):

Tests/test_image.py

@@ -34,6 +34,7 @@ from .helper import (
     is_win32,
     mark_if_feature_version,
     skip_unless_feature,
+    timeout_unless_slower_valgrind,
 )
 
 ElementTree: ModuleType | None
@@ -572,10 +573,7 @@ class TestImage:
         i = Image.new("RGB", [1, 1])
         assert isinstance(i.size, tuple)
 
-    @pytest.mark.timeout(0.75)
-    @pytest.mark.skipif(
-        "PILLOW_VALGRIND_TEST" in os.environ, reason="Valgrind is slower"
-    )
+    @timeout_unless_slower_valgrind(0.75)
     @pytest.mark.parametrize("size", ((0, 100000000), (100000000, 0)))
     def test_empty_image(self, size: tuple[int, int]) -> None:
         Image.new("RGB", size)

Tests/test_imagefontpil.py

@@ -7,7 +7,7 @@ import pytest
 
 from PIL import Image, ImageDraw, ImageFont, _util, features
 
-from .helper import assert_image_equal_tofile
+from .helper import assert_image_equal_tofile, timeout_unless_slower_valgrind
 
 fonts = [ImageFont.load_default_imagefont()]
 if not features.check_module("freetype2"):
@@ -72,7 +72,7 @@ def test_decompression_bomb() -> None:
         font.getmask("A" * 1_000_000)
 
 
-@pytest.mark.timeout(4)
+@timeout_unless_slower_valgrind(4)
 def test_oom() -> None:
     glyph = struct.pack(
         ">hhhhhhhhhh", 1, 0, -32767, -32767, 32767, 32767, -32767, -32767, 32767, 32767