Added type hints

Tests/test_font_leaks.py

@@ -12,7 +12,7 @@ class TestTTypeFontLeak(PillowLeakTestCase):
     iterations = 10
     mem_limit = 4096  # k
 
-    def _test_font(self, font: ImageFont.FreeTypeFont) -> None:
+    def _test_font(self, font: ImageFont.FreeTypeFont | ImageFont.ImageFont) -> None:
         im = Image.new("RGB", (255, 255), "white")
         draw = ImageDraw.ImageDraw(im)
         self._test_leak(

Tests/test_image.py

@@ -99,10 +99,18 @@ class TestImage:
         JPGFILE = "Tests/images/hopper.jpg"
 
         with pytest.raises(TypeError):
-            with Image.open(PNGFILE, formats=123):
+            with Image.open(PNGFILE, formats=123):  # type: ignore[arg-type]
                 pass
 
-        for formats in [["JPEG"], ("JPEG",), ["jpeg"], ["Jpeg"], ["jPeG"], ["JpEg"]]:
+        format_list: list[list[str] | tuple[str, ...]] = [
+            ["JPEG"],
+            ("JPEG",),
+            ["jpeg"],
+            ["Jpeg"],
+            ["jPeG"],
+            ["JpEg"],
+        ]
+        for formats in format_list:
             with pytest.raises(UnidentifiedImageError):
                 with Image.open(PNGFILE, formats=formats):
                     pass
@@ -138,7 +146,7 @@ class TestImage:
 
     def test_bad_mode(self) -> None:
         with pytest.raises(ValueError):
-            with Image.open("filename", "bad mode"):
+            with Image.open("filename", "bad mode"):  # type: ignore[arg-type]
                 pass
 
     def test_stringio(self) -> None:
@@ -497,9 +505,11 @@ class TestImage:
     def test_check_size(self) -> None:
         # Checking that the _check_size function throws value errors when we want it to
         with pytest.raises(ValueError):
-            Image.new("RGB", 0)  # not a tuple
+            # not a tuple
+            Image.new("RGB", 0)  # type: ignore[arg-type]
         with pytest.raises(ValueError):
-            Image.new("RGB", (0,))  # Tuple too short
+            # tuple too short
+            Image.new("RGB", (0,))  # type: ignore[arg-type]
         with pytest.raises(ValueError):
             Image.new("RGB", (-1, -1))  # w,h < 0
 

Tests/test_imagecms.py

@@ -7,7 +7,7 @@ import shutil
 import sys
 from io import BytesIO
 from pathlib import Path
-from typing import Any
+from typing import Any, Literal, cast
 
 import pytest
 
@@ -209,13 +209,13 @@ def test_exceptions() -> None:
         ImageCms.buildTransform("foo", "bar", "RGB", "RGB")
 
     with pytest.raises(ImageCms.PyCMSError, match="Invalid type for Profile"):
-        ImageCms.getProfileName(None)
+        ImageCms.getProfileName(None)  # type: ignore[arg-type]
     skip_missing()
 
     # Python <= 3.9: "an integer is required (got type NoneType)"
     # Python > 3.9: "'NoneType' object cannot be interpreted as an integer"
     with pytest.raises(ImageCms.PyCMSError, match="integer"):
-        ImageCms.isIntentSupported(SRGB, None, None)
+        ImageCms.isIntentSupported(SRGB, None, None)  # type: ignore[arg-type]
 
 
 def test_display_profile() -> None:
@@ -239,7 +239,7 @@ def test_unsupported_color_space() -> None:
             "Color space not supported for on-the-fly profile creation (unsupported)"
         ),
     ):
-        ImageCms.createProfile("unsupported")
+        ImageCms.createProfile("unsupported")  # type: ignore[arg-type]
 
 
 def test_invalid_color_temperature() -> None:
@@ -352,7 +352,7 @@ def test_extended_information() -> None:
     p = o.profile
 
     def assert_truncated_tuple_equal(
-        tup1: tuple[Any, ...], tup2: tuple[Any, ...], digits: int = 10
+        tup1: tuple[Any, ...] | None, tup2: tuple[Any, ...], digits: int = 10
     ) -> None:
         # Helper function to reduce precision of tuples of floats
         # recursively and then check equality.
@@ -368,6 +368,7 @@ def test_extended_information() -> None:
                 for val in tuple_value
             )
 
+        assert tup1 is not None
         assert truncate_tuple(tup1) == truncate_tuple(tup2)
 
     assert p.attributes == 4294967296
@@ -513,22 +514,22 @@ def test_non_ascii_path(tmp_path: Path) -> None:
 def test_profile_typesafety() -> None:
     # does not segfault
     with pytest.raises(TypeError, match="Invalid type for Profile"):
-        ImageCms.ImageCmsProfile(0).tobytes()
+        ImageCms.ImageCmsProfile(0)  # type: ignore[arg-type]
     with pytest.raises(TypeError, match="Invalid type for Profile"):
-        ImageCms.ImageCmsProfile(1).tobytes()
+        ImageCms.ImageCmsProfile(1)  # type: ignore[arg-type]
 
     # also check core function
     with pytest.raises(TypeError):
-        ImageCms.core.profile_tobytes(0)
+        ImageCms.core.profile_tobytes(0)  # type: ignore[arg-type]
     with pytest.raises(TypeError):
-        ImageCms.core.profile_tobytes(1)
+        ImageCms.core.profile_tobytes(1)  # type: ignore[arg-type]
 
     if not is_pypy():
         # core profile should not be directly instantiable
         with pytest.raises(TypeError):
             ImageCms.core.CmsProfile()
         with pytest.raises(TypeError):
-            ImageCms.core.CmsProfile(0)
+            ImageCms.core.CmsProfile(0)  # type: ignore[call-arg]
 
 
 @pytest.mark.skipif(is_pypy(), reason="fails on PyPy")
@@ -537,7 +538,7 @@ def test_transform_typesafety() -> None:
     with pytest.raises(TypeError):
         ImageCms.core.CmsTransform()
     with pytest.raises(TypeError):
-        ImageCms.core.CmsTransform(0)
+        ImageCms.core.CmsTransform(0)  # type: ignore[call-arg]
 
 
 def assert_aux_channel_preserved(
@@ -637,7 +638,8 @@ def test_auxiliary_channels_isolated() -> None:
                     continue
 
                 # convert with and without AUX data, test colors are equal
-                source_profile = ImageCms.createProfile(src_format[1])
+                src_colorSpace = cast(Literal["LAB", "XYZ", "sRGB"], src_format[1])
+                source_profile = ImageCms.createProfile(src_colorSpace)
                 destination_profile = ImageCms.createProfile(dst_format[1])
                 source_image = src_format[3]
                 test_transform = ImageCms.buildTransform(

Tests/test_imagestat.py

@@ -25,10 +25,10 @@ def test_sanity() -> None:
     st.stddev
 
     with pytest.raises(AttributeError):
-        st.spam()
+        st.spam()  # type: ignore[attr-defined]
 
     with pytest.raises(TypeError):
-        ImageStat.Stat(1)
+        ImageStat.Stat(1)  # type: ignore[arg-type]
 
 
 def test_hopper() -> None: