Pillow/Tests/test_file_ico.py

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import io
import pytest
from PIL import IcoImagePlugin, Image, ImageDraw
from .helper import assert_image_equal, assert_image_equal_tofile, hopper
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TEST_ICO_FILE = "Tests/images/hopper.ico"
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def test_sanity():
with Image.open(TEST_ICO_FILE) as im:
im.load()
assert im.mode == "RGBA"
assert im.size == (16, 16)
assert im.format == "ICO"
assert im.get_format_mimetype() == "image/x-icon"
def test_load():
with Image.open(TEST_ICO_FILE) as im:
assert im.load()[0, 0] == (1, 1, 9, 255)
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def test_mask():
with Image.open("Tests/images/hopper_mask.ico") as im:
assert_image_equal_tofile(im, "Tests/images/hopper_mask.png")
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def test_black_and_white():
with Image.open("Tests/images/black_and_white.ico") as im:
assert im.mode == "RGBA"
assert im.size == (16, 16)
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def test_invalid_file():
with open("Tests/images/flower.jpg", "rb") as fp:
with pytest.raises(SyntaxError):
IcoImagePlugin.IcoImageFile(fp)
def test_save_to_bytes():
output = io.BytesIO()
im = hopper()
im.save(output, "ico", sizes=[(32, 32), (64, 64)])
# The default image
output.seek(0)
with Image.open(output) as reloaded:
assert reloaded.info["sizes"] == {(32, 32), (64, 64)}
assert im.mode == reloaded.mode
assert (64, 64) == reloaded.size
assert reloaded.format == "ICO"
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assert_image_equal(
reloaded, hopper().resize((64, 64), Image.Resampling.LANCZOS)
)
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# The other one
output.seek(0)
with Image.open(output) as reloaded:
reloaded.size = (32, 32)
assert im.mode == reloaded.mode
assert (32, 32) == reloaded.size
assert reloaded.format == "ICO"
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assert_image_equal(
reloaded, hopper().resize((32, 32), Image.Resampling.LANCZOS)
)
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@pytest.mark.parametrize("mode", ("1", "L", "P", "RGB", "RGBA"))
def test_save_to_bytes_bmp(mode):
output = io.BytesIO()
im = hopper(mode)
im.save(output, "ico", bitmap_format="bmp", sizes=[(32, 32), (64, 64)])
# The default image
output.seek(0)
with Image.open(output) as reloaded:
assert reloaded.info["sizes"] == {(32, 32), (64, 64)}
assert "RGBA" == reloaded.mode
assert (64, 64) == reloaded.size
assert reloaded.format == "ICO"
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im = hopper(mode).resize((64, 64), Image.Resampling.LANCZOS).convert("RGBA")
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assert_image_equal(reloaded, im)
# The other one
output.seek(0)
with Image.open(output) as reloaded:
reloaded.size = (32, 32)
assert "RGBA" == reloaded.mode
assert (32, 32) == reloaded.size
assert reloaded.format == "ICO"
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im = hopper(mode).resize((32, 32), Image.Resampling.LANCZOS).convert("RGBA")
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assert_image_equal(reloaded, im)
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def test_incorrect_size():
with Image.open(TEST_ICO_FILE) as im:
with pytest.raises(ValueError):
im.size = (1, 1)
def test_save_256x256(tmp_path):
"""Issue #2264 https://github.com/python-pillow/Pillow/issues/2264"""
# Arrange
with Image.open("Tests/images/hopper_256x256.ico") as im:
outfile = str(tmp_path / "temp_saved_hopper_256x256.ico")
# Act
im.save(outfile)
with Image.open(outfile) as im_saved:
# Assert
assert im_saved.size == (256, 256)
def test_only_save_relevant_sizes(tmp_path):
"""Issue #2266 https://github.com/python-pillow/Pillow/issues/2266
Should save in 16x16, 24x24, 32x32, 48x48 sizes
and not in 16x16, 24x24, 32x32, 48x48, 48x48, 48x48, 48x48 sizes
"""
# Arrange
with Image.open("Tests/images/python.ico") as im: # 16x16, 32x32, 48x48
outfile = str(tmp_path / "temp_saved_python.ico")
# Act
im.save(outfile)
with Image.open(outfile) as im_saved:
# Assert
assert im_saved.info["sizes"] == {(16, 16), (24, 24), (32, 32), (48, 48)}
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def test_save_append_images(tmp_path):
# append_images should be used for scaled down versions of the image
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im = hopper("RGBA")
provided_im = Image.new("RGBA", (32, 32), (255, 0, 0))
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outfile = str(tmp_path / "temp_saved_multi_icon.ico")
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im.save(outfile, sizes=[(32, 32), (128, 128)], append_images=[provided_im])
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with Image.open(outfile) as reread:
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assert_image_equal(reread, hopper("RGBA"))
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reread.size = (32, 32)
assert_image_equal(reread, provided_im)
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def test_unexpected_size():
# This image has been manually hexedited to state that it is 16x32
# while the image within is still 16x16
def open():
with Image.open("Tests/images/hopper_unexpected.ico") as im:
assert im.size == (16, 16)
pytest.warns(UserWarning, open)
def test_draw_reloaded(tmp_path):
with Image.open(TEST_ICO_FILE) as im:
outfile = str(tmp_path / "temp_saved_hopper_draw.ico")
draw = ImageDraw.Draw(im)
draw.line((0, 0) + im.size, "#f00")
im.save(outfile)
with Image.open(outfile) as im:
assert_image_equal_tofile(im, "Tests/images/hopper_draw.ico")