mirror of
https://github.com/python-pillow/Pillow.git
synced 2024-12-27 02:16:19 +03:00
4de5477b61
With the introduction and use of pytest, it is simple and easy to
execute specific tests in isolation through documented command line
arguments. Either by specifying the module path or through the `-k
EXPRESSION` argument. There is no longer any need to provide the
boilerplate:
if __name__ == '__main__':
unittest.main()
To every test file. It is simply noise.
The pattern remains in test files that aren't named with `test_*` as
those files are not discovered and executed by pytest by default.
52 lines
1.4 KiB
Python
52 lines
1.4 KiB
Python
from .helper import PillowTestCase
|
|
|
|
from PIL import Image
|
|
|
|
# sample ppm stream
|
|
test_file = "Tests/images/hopper.ppm"
|
|
|
|
|
|
class TestFilePpm(PillowTestCase):
|
|
|
|
def test_sanity(self):
|
|
im = Image.open(test_file)
|
|
im.load()
|
|
self.assertEqual(im.mode, "RGB")
|
|
self.assertEqual(im.size, (128, 128))
|
|
self.assertEqual(im.format, "PPM")
|
|
|
|
def test_16bit_pgm(self):
|
|
im = Image.open('Tests/images/16_bit_binary.pgm')
|
|
im.load()
|
|
self.assertEqual(im.mode, 'I')
|
|
self.assertEqual(im.size, (20, 100))
|
|
|
|
tgt = Image.open('Tests/images/16_bit_binary_pgm.png')
|
|
self.assert_image_equal(im, tgt)
|
|
|
|
def test_16bit_pgm_write(self):
|
|
im = Image.open('Tests/images/16_bit_binary.pgm')
|
|
im.load()
|
|
|
|
f = self.tempfile('temp.pgm')
|
|
im.save(f, 'PPM')
|
|
|
|
reloaded = Image.open(f)
|
|
self.assert_image_equal(im, reloaded)
|
|
|
|
def test_truncated_file(self):
|
|
path = self.tempfile('temp.pgm')
|
|
with open(path, 'w') as f:
|
|
f.write('P6')
|
|
|
|
self.assertRaises(ValueError, Image.open, path)
|
|
|
|
def test_neg_ppm(self):
|
|
# 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 self.assertRaises(IOError):
|
|
Image.open('Tests/images/negative_size.ppm')
|