mirror of
https://github.com/python-pillow/Pillow.git
synced 2024-11-11 04:07:21 +03:00
83 lines
2.2 KiB
Python
83 lines
2.2 KiB
Python
import pytest
|
|
from PIL import Image
|
|
|
|
from .helper import assert_image_equal, assert_image_similar, hopper
|
|
|
|
# sample ppm stream
|
|
TEST_FILE = "Tests/images/hopper.ppm"
|
|
|
|
|
|
def test_sanity():
|
|
with Image.open(TEST_FILE) as im:
|
|
im.load()
|
|
assert im.mode == "RGB"
|
|
assert im.size == (128, 128)
|
|
assert im.format, "PPM"
|
|
assert im.get_format_mimetype() == "image/x-portable-pixmap"
|
|
|
|
|
|
def test_16bit_pgm():
|
|
with Image.open("Tests/images/16_bit_binary.pgm") as im:
|
|
im.load()
|
|
assert im.mode == "I"
|
|
assert im.size == (20, 100)
|
|
assert im.get_format_mimetype() == "image/x-portable-graymap"
|
|
|
|
with Image.open("Tests/images/16_bit_binary_pgm.png") as tgt:
|
|
assert_image_equal(im, tgt)
|
|
|
|
|
|
def test_16bit_pgm_write(tmp_path):
|
|
with Image.open("Tests/images/16_bit_binary.pgm") as im:
|
|
im.load()
|
|
|
|
f = str(tmp_path / "temp.pgm")
|
|
im.save(f, "PPM")
|
|
|
|
with Image.open(f) as reloaded:
|
|
assert_image_equal(im, reloaded)
|
|
|
|
|
|
def test_pnm(tmp_path):
|
|
with Image.open("Tests/images/hopper.pnm") as im:
|
|
assert_image_similar(im, hopper(), 0.0001)
|
|
|
|
f = str(tmp_path / "temp.pnm")
|
|
im.save(f)
|
|
|
|
with Image.open(f) as reloaded:
|
|
assert_image_equal(im, reloaded)
|
|
|
|
|
|
def test_truncated_file(tmp_path):
|
|
path = str(tmp_path / "temp.pgm")
|
|
with open(path, "w") as f:
|
|
f.write("P6")
|
|
|
|
with pytest.raises(ValueError):
|
|
Image.open(path)
|
|
|
|
|
|
def test_neg_ppm():
|
|
# Storage.c accepted negative values for xsize, ysize. the
|
|
# internal open_ppm function didn't check for sanity but it
|
|
# has been removed. The default opener doesn't accept negative
|
|
# sizes.
|
|
|
|
with pytest.raises(OSError):
|
|
Image.open("Tests/images/negative_size.ppm")
|
|
|
|
|
|
def test_mimetypes(tmp_path):
|
|
path = str(tmp_path / "temp.pgm")
|
|
|
|
with open(path, "w") as f:
|
|
f.write("P4\n128 128\n255")
|
|
with Image.open(path) as im:
|
|
assert im.get_format_mimetype() == "image/x-portable-bitmap"
|
|
|
|
with open(path, "w") as f:
|
|
f.write("PyCMYK\n128 128\n255")
|
|
with Image.open(path) as im:
|
|
assert im.get_format_mimetype() == "image/x-portable-anymap"
|