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Merge pull request #13 from radarhere/bytes_tests

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Simplify tests
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Yay295 2024-03-27 09:37:01 -05:00 committed by GitHub
commit a4aac18ba3
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1 changed files with 46 additions and 64 deletions
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110
Tests/test_image.py
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@ -33,34 +33,34 @@ from .helper import (
skip_unless_feature,
)
# name, number of bands, pixel size
# name, pixel size
image_modes = (
("1", 1, 1),
("L", 1, 1),
("LA", 2, 4),
("La", 2, 4),
("P", 1, 1),
("PA", 2, 4),
("F", 1, 4),
("I", 1, 4),
("I;16", 1, 2),
("I;16L", 1, 2),
("I;16B", 1, 2),
("I;16N", 1, 2),
("RGB", 3, 4),
("RGBA", 4, 4),
("RGBa", 4, 4),
("RGBX", 4, 4),
("BGR;15", 3, 2),
("BGR;16", 3, 2),
("BGR;24", 3, 3),
("CMYK", 4, 4),
("YCbCr", 3, 4),
("HSV", 3, 4),
("LAB", 3, 4),
("1", 1),
("L", 1),
("LA", 4),
("La", 4),
("P", 1),
("PA", 4),
("F", 4),
("I", 4),
("I;16", 2),
("I;16L", 2),
("I;16B", 2),
("I;16N", 2),
("RGB", 4),
("RGBA", 4),
("RGBa", 4),
("RGBX", 4),
("BGR;15", 2),
("BGR;16", 2),
("BGR;24", 3),
("CMYK", 4),
("YCbCr", 4),
("HSV", 4),
("LAB", 4),
)
image_mode_names = [name for name, _, _ in image_modes]
image_mode_names = [name for name, _ in image_modes]
class TestImage:
@ -1045,50 +1045,32 @@ class TestImage:
class TestImageBytes:
sample_bytes = bytes(
range(2 * 2 * max(pixelsize for mode, num_bands, pixelsize in image_modes))
)
@pytest.mark.parametrize("mode", image_mode_names)
def test_roundtrip_bytes_constructor(self, mode: str) -> None:
im = hopper(mode)
source_bytes = im.tobytes()
reloaded = Image.frombytes(mode, im.size, source_bytes)
assert reloaded.tobytes() == source_bytes
@pytest.mark.parametrize("mode", image_mode_names)
def test_roundtrip_bytes_constructor(self, mode: str):
source_image = hopper(mode)
source_bytes = source_image.tobytes()
copy_image = Image.frombytes(mode, source_image.size, source_bytes)
assert copy_image.tobytes() == source_bytes
def test_roundtrip_bytes_method(self, mode: str) -> None:
im = hopper(mode)
source_bytes = im.tobytes()
@pytest.mark.parametrize("mode", image_mode_names)
def test_roundtrip_bytes_method(self, mode: str):
source_image = hopper(mode)
source_bytes = source_image.tobytes()
copy_image = Image.new(mode, source_image.size)
copy_image.frombytes(source_bytes)
assert copy_image.tobytes() == source_bytes
reloaded = Image.new(mode, im.size)
reloaded.frombytes(source_bytes)
assert reloaded.tobytes() == source_bytes
@pytest.mark.parametrize(("mode", "num_bands", "pixelsize"), image_modes)
def test_pixels_after_getdata_putdata(
self, mode: str, num_bands: int, pixelsize: int
):
image_byte_size = 2 * 2 * pixelsize
start_bytes = self.sample_bytes[:image_byte_size]
image = Image.frombytes(mode, (2, 2), start_bytes)
@pytest.mark.parametrize(("mode", "pixelsize"), image_modes)
def test_getdata_putdata(self, mode: str, pixelsize: int) -> None:
im = Image.new(mode, (2, 2))
source_bytes = bytes(range(im.width * im.height * pixelsize))
im.frombytes(source_bytes)
start_pixels = (
image.getpixel((0, 0)),
image.getpixel((0, 1)),
image.getpixel((1, 0)),
image.getpixel((1, 1)),
)
image.putdata(image.getdata())
end_pixels = (
image.getpixel((0, 0)),
image.getpixel((0, 1)),
image.getpixel((1, 0)),
image.getpixel((1, 1)),
)
assert start_pixels == end_pixels
reloaded = Image.new(mode, im.size)
reloaded.putdata(im.getdata())
assert_image_equal(im, reloaded)
class MockEncoder(ImageFile.PyEncoder):