Pillow/Tests/test_pickle.py
Jon Dufresne 4de5477b61 Remove unnecessary unittest.main() boilerplate from test files
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.
2019-02-03 10:10:16 -08:00

94 lines
2.7 KiB
Python

from .helper import PillowTestCase
from PIL import Image
class TestPickle(PillowTestCase):
def helper_pickle_file(self, pickle, protocol=0, mode=None):
# Arrange
im = Image.open('Tests/images/hopper.jpg')
filename = self.tempfile('temp.pkl')
if mode:
im = im.convert(mode)
# Act
with open(filename, 'wb') as f:
pickle.dump(im, f, protocol)
with open(filename, 'rb') as f:
loaded_im = pickle.load(f)
# Assert
self.assertEqual(im, loaded_im)
def helper_pickle_string(self, pickle, protocol=0,
test_file='Tests/images/hopper.jpg', mode=None):
im = Image.open(test_file)
if mode:
im = im.convert(mode)
# Act
dumped_string = pickle.dumps(im, protocol)
loaded_im = pickle.loads(dumped_string)
# Assert
self.assertEqual(im, loaded_im)
def test_pickle_image(self):
# Arrange
import pickle
# Act / Assert
for protocol in range(0, pickle.HIGHEST_PROTOCOL + 1):
self.helper_pickle_string(pickle, protocol)
self.helper_pickle_file(pickle, protocol)
def test_cpickle_image(self):
# Arrange
try:
import cPickle
except ImportError:
return
# Act / Assert
for protocol in range(0, cPickle.HIGHEST_PROTOCOL + 1):
self.helper_pickle_string(cPickle, protocol)
self.helper_pickle_file(cPickle, protocol)
def test_pickle_p_mode(self):
# Arrange
import pickle
# Act / Assert
for test_file in [
"Tests/images/test-card.png",
"Tests/images/zero_bb.png",
"Tests/images/zero_bb_scale2.png",
"Tests/images/non_zero_bb.png",
"Tests/images/non_zero_bb_scale2.png",
"Tests/images/p_trns_single.png",
"Tests/images/pil123p.png"
]:
self.helper_pickle_string(pickle, test_file=test_file)
def test_pickle_l_mode(self):
# Arrange
import pickle
# Act / Assert
for protocol in range(0, pickle.HIGHEST_PROTOCOL + 1):
self.helper_pickle_string(pickle, protocol, mode="L")
self.helper_pickle_file(pickle, protocol, mode="L")
def test_cpickle_l_mode(self):
# Arrange
try:
import cPickle
except ImportError:
return
# Act / Assert
for protocol in range(0, cPickle.HIGHEST_PROTOCOL + 1):
self.helper_pickle_string(cPickle, protocol, mode="L")
self.helper_pickle_file(cPickle, protocol, mode="L")