mirror of
https://github.com/python-pillow/Pillow.git
synced 2024-11-14 13:46:57 +03:00
141 lines
3.8 KiB
Python
141 lines
3.8 KiB
Python
import io
|
|
|
|
import pytest
|
|
|
|
from PIL import BmpImagePlugin, Image
|
|
|
|
from .helper import assert_image_equal, 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"] == dpi
|
|
|
|
|
|
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:
|
|
|
|
# Act
|
|
im.save(outfile, "JPEG", dpi=im.info["dpi"])
|
|
|
|
# Assert
|
|
with Image.open(outfile) as reloaded:
|
|
reloaded.load()
|
|
assert im.info["dpi"] == reloaded.info["dpi"]
|
|
assert im.size == reloaded.size
|
|
assert reloaded.format == "JPEG"
|
|
|
|
|
|
def test_load_dpi_rounding():
|
|
# Round up
|
|
with Image.open("Tests/images/hopper.bmp") as im:
|
|
assert im.info["dpi"] == (96, 96)
|
|
|
|
# Round down
|
|
with Image.open("Tests/images/hopper_roundDown.bmp") as im:
|
|
assert im.info["dpi"] == (72, 72)
|
|
|
|
|
|
def test_save_dpi_rounding(tmp_path):
|
|
outfile = str(tmp_path / "temp.bmp")
|
|
with Image.open("Tests/images/hopper.bmp") as im:
|
|
im.save(outfile, dpi=(72.2, 72.2))
|
|
with Image.open(outfile) as reloaded:
|
|
assert reloaded.info["dpi"] == (72, 72)
|
|
|
|
im.save(outfile, dpi=(72.8, 72.8))
|
|
with Image.open(outfile) as reloaded:
|
|
assert reloaded.info["dpi"] == (73, 73)
|
|
|
|
|
|
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"
|
|
|
|
with Image.open("Tests/images/clipboard_target.png") as target:
|
|
assert_image_equal(im, target)
|
|
|
|
|
|
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))
|
|
|
|
with Image.open("Tests/images/bmp/q/rgb32bf-xbgr.bmp") as target:
|
|
assert_image_equal(im, target)
|