Merge pull request #7755 from radarhere/type_hints

Author: hugovk

Tests/test_000_sanity.py

@@ -3,7 +3,7 @@
 from PIL import Image
 
 
-def test_sanity():
+def test_sanity() -> None:
     # Make sure we have the binary extension
     Image.core.new("L", (100, 100))
 

Tests/test_binary.py

@@ -3,20 +3,20 @@
 from PIL import _binary
 
 
-def test_standard():
+def test_standard() -> None:
     assert _binary.i8(b"*") == 42
     assert _binary.o8(42) == b"*"
 
 
-def test_little_endian():
+def test_little_endian() -> None:
     assert _binary.i16le(b"\xff\xff\x00\x00") == 65535
     assert _binary.i32le(b"\xff\xff\x00\x00") == 65535
 
     assert _binary.o16le(65535) == b"\xff\xff"
     assert _binary.o32le(65535) == b"\xff\xff\x00\x00"
 
 
-def test_big_endian():
+def test_big_endian() -> None:
     assert _binary.i16be(b"\x00\x00\xff\xff") == 0
     assert _binary.i32be(b"\x00\x00\xff\xff") == 65535
 

Tests/test_file_cur.py

@@ -7,7 +7,7 @@
 TEST_FILE = "Tests/images/deerstalker.cur"
 
 
-def test_sanity():
+def test_sanity() -> None:
     with Image.open(TEST_FILE) as im:
         assert im.size == (32, 32)
         assert isinstance(im, CurImagePlugin.CurImageFile)
@@ -17,7 +17,7 @@ def test_sanity():
         assert im.getpixel((16, 16)) == (84, 87, 86, 255)
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     invalid_file = "Tests/images/flower.jpg"
 
     with pytest.raises(SyntaxError):

Tests/test_file_ftex.py

@@ -7,18 +7,18 @@
 from .helper import assert_image_equal_tofile, assert_image_similar
 
 
-def test_load_raw():
+def test_load_raw() -> None:
     with Image.open("Tests/images/ftex_uncompressed.ftu") as im:
         assert_image_equal_tofile(im, "Tests/images/ftex_uncompressed.png")
 
 
-def test_load_dxt1():
+def test_load_dxt1() -> None:
     with Image.open("Tests/images/ftex_dxt1.ftc") as im:
         with Image.open("Tests/images/ftex_dxt1.png") as target:
             assert_image_similar(im, target.convert("RGBA"), 15)
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     invalid_file = "Tests/images/flower.jpg"
 
     with pytest.raises(SyntaxError):

Tests/test_file_gbr.py

@@ -7,27 +7,27 @@
 from .helper import assert_image_equal_tofile
 
 
-def test_gbr_file():
+def test_gbr_file() -> None:
     with Image.open("Tests/images/gbr.gbr") as im:
         assert_image_equal_tofile(im, "Tests/images/gbr.png")
 
 
-def test_load():
+def test_load() -> None:
     with Image.open("Tests/images/gbr.gbr") as im:
         assert im.load()[0, 0] == (0, 0, 0, 0)
 
         # Test again now that it has already been loaded once
         assert im.load()[0, 0] == (0, 0, 0, 0)
 
 
-def test_multiple_load_operations():
+def test_multiple_load_operations() -> None:
     with Image.open("Tests/images/gbr.gbr") as im:
         im.load()
         im.load()
         assert_image_equal_tofile(im, "Tests/images/gbr.png")
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     invalid_file = "Tests/images/flower.jpg"
 
     with pytest.raises(SyntaxError):

Tests/test_file_gd.py

@@ -7,18 +7,18 @@
 TEST_GD_FILE = "Tests/images/hopper.gd"
 
 
-def test_sanity():
+def test_sanity() -> None:
     with GdImageFile.open(TEST_GD_FILE) as im:
         assert im.size == (128, 128)
         assert im.format == "GD"
 
 
-def test_bad_mode():
+def test_bad_mode() -> None:
     with pytest.raises(ValueError):
         GdImageFile.open(TEST_GD_FILE, "bad mode")
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     invalid_file = "Tests/images/flower.jpg"
 
     with pytest.raises(UnidentifiedImageError):

Tests/test_file_gimppalette.py

@@ -5,7 +5,7 @@
 from PIL.GimpPaletteFile import GimpPaletteFile
 
 
-def test_sanity():
+def test_sanity() -> None:
     with open("Tests/images/test.gpl", "rb") as fp:
         GimpPaletteFile(fp)
 
@@ -22,7 +22,7 @@ def test_sanity():
             GimpPaletteFile(fp)
 
 
-def test_get_palette():
+def test_get_palette() -> None:
     # Arrange
     with open("Tests/images/custom_gimp_palette.gpl", "rb") as fp:
         palette_file = GimpPaletteFile(fp)

Tests/test_file_imt.py

@@ -9,13 +9,13 @@
 from .helper import assert_image_equal_tofile
 
 
-def test_sanity():
+def test_sanity() -> None:
     with Image.open("Tests/images/bw_gradient.imt") as im:
         assert_image_equal_tofile(im, "Tests/images/bw_gradient.png")
 
 
 @pytest.mark.parametrize("data", (b"\n", b"\n-", b"width 1\n"))
-def test_invalid_file(data):
+def test_invalid_file(data: bytes) -> None:
     with io.BytesIO(data) as fp:
         with pytest.raises(SyntaxError):
             ImtImagePlugin.ImtImageFile(fp)

Tests/test_file_mcidas.py

@@ -7,14 +7,14 @@
 from .helper import assert_image_equal_tofile
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     invalid_file = "Tests/images/flower.jpg"
 
     with pytest.raises(SyntaxError):
         McIdasImagePlugin.McIdasImageFile(invalid_file)
 
 
-def test_valid_file():
+def test_valid_file() -> None:
     # Arrange
     # https://ghrc.nsstc.nasa.gov/hydro/details/cmx3g8
     # https://ghrc.nsstc.nasa.gov/pub/fieldCampaigns/camex3/cmx3g8/browse/

Tests/test_file_pcd.py

@@ -3,7 +3,7 @@
 from PIL import Image
 
 
-def test_load_raw():
+def test_load_raw() -> None:
     with Image.open("Tests/images/hopper.pcd") as im:
         im.load()  # should not segfault.