mirror of
https://github.com/python-pillow/Pillow.git
synced 2024-12-26 18:06:18 +03:00
126 lines
3.5 KiB
Python
126 lines
3.5 KiB
Python
import io
|
|
|
|
import pytest
|
|
|
|
from PIL import BmpImagePlugin, Image
|
|
|
|
from .helper import assert_image_equal, assert_image_equal_tofile, hopper
|
|
|
|
|
|
def test_sanity(tmp_path):
|
|
def roundtrip(im):
|
|
outfile = str(tmp_path / "temp.bmp")
|
|
|
|
im.save(outfile, "BMP")
|
|
|
|
with Image.open(outfile) as reloaded:
|
|
reloaded.load()
|
|
assert im.mode == reloaded.mode
|
|
assert im.size == reloaded.size
|
|
assert reloaded.format == "BMP"
|
|
assert reloaded.get_format_mimetype() == "image/bmp"
|
|
|
|
roundtrip(hopper())
|
|
|
|
roundtrip(hopper("1"))
|
|
roundtrip(hopper("L"))
|
|
roundtrip(hopper("P"))
|
|
roundtrip(hopper("RGB"))
|
|
|
|
|
|
def test_invalid_file():
|
|
with open("Tests/images/flower.jpg", "rb") as fp:
|
|
with pytest.raises(SyntaxError):
|
|
BmpImagePlugin.BmpImageFile(fp)
|
|
|
|
|
|
def test_save_to_bytes():
|
|
output = io.BytesIO()
|
|
im = hopper()
|
|
im.save(output, "BMP")
|
|
|
|
output.seek(0)
|
|
with Image.open(output) as reloaded:
|
|
assert im.mode == reloaded.mode
|
|
assert im.size == reloaded.size
|
|
assert reloaded.format == "BMP"
|
|
|
|
|
|
def test_save_too_large(tmp_path):
|
|
outfile = str(tmp_path / "temp.bmp")
|
|
with Image.new("RGB", (1, 1)) as im:
|
|
im._size = (37838, 37838)
|
|
with pytest.raises(ValueError):
|
|
im.save(outfile)
|
|
|
|
|
|
def test_dpi():
|
|
dpi = (72, 72)
|
|
|
|
output = io.BytesIO()
|
|
with hopper() as im:
|
|
im.save(output, "BMP", dpi=dpi)
|
|
|
|
output.seek(0)
|
|
with Image.open(output) as reloaded:
|
|
assert reloaded.info["dpi"] == (72.008961115161, 72.008961115161)
|
|
|
|
|
|
def test_save_bmp_with_dpi(tmp_path):
|
|
# Test for #1301
|
|
# Arrange
|
|
outfile = str(tmp_path / "temp.jpg")
|
|
with Image.open("Tests/images/hopper.bmp") as im:
|
|
assert im.info["dpi"] == (95.98654816726399, 95.98654816726399)
|
|
|
|
# Act
|
|
im.save(outfile, "JPEG", dpi=im.info["dpi"])
|
|
|
|
# Assert
|
|
with Image.open(outfile) as reloaded:
|
|
reloaded.load()
|
|
assert reloaded.info["dpi"] == (96, 96)
|
|
assert reloaded.size == im.size
|
|
assert reloaded.format == "JPEG"
|
|
|
|
|
|
def test_save_float_dpi(tmp_path):
|
|
outfile = str(tmp_path / "temp.bmp")
|
|
with Image.open("Tests/images/hopper.bmp") as im:
|
|
im.save(outfile, dpi=(72.21216100543306, 72.21216100543306))
|
|
with Image.open(outfile) as reloaded:
|
|
assert reloaded.info["dpi"] == (72.21216100543306, 72.21216100543306)
|
|
|
|
|
|
def test_load_dib():
|
|
# test for #1293, Imagegrab returning Unsupported Bitfields Format
|
|
with Image.open("Tests/images/clipboard.dib") as im:
|
|
assert im.format == "DIB"
|
|
assert im.get_format_mimetype() == "image/bmp"
|
|
|
|
assert_image_equal_tofile(im, "Tests/images/clipboard_target.png")
|
|
|
|
|
|
def test_save_dib(tmp_path):
|
|
outfile = str(tmp_path / "temp.dib")
|
|
|
|
with Image.open("Tests/images/clipboard.dib") as im:
|
|
im.save(outfile)
|
|
|
|
with Image.open(outfile) as reloaded:
|
|
assert reloaded.format == "DIB"
|
|
assert reloaded.get_format_mimetype() == "image/bmp"
|
|
assert_image_equal(im, reloaded)
|
|
|
|
|
|
def test_rgba_bitfields():
|
|
# This test image has been manually hexedited
|
|
# to change the bitfield compression in the header from XBGR to RGBA
|
|
with Image.open("Tests/images/rgb32bf-rgba.bmp") as im:
|
|
|
|
# So before the comparing the image, swap the channels
|
|
b, g, r = im.split()[1:]
|
|
im = Image.merge("RGB", (r, g, b))
|
|
|
|
assert_image_equal_tofile(im, "Tests/images/bmp/q/rgb32bf-xbgr.bmp")
|