mirror of
https://github.com/python-pillow/Pillow.git
synced 2024-12-26 18:06:18 +03:00
9e856b8a72
In Python 3, cPickle and pickle have been merged to a single module. From https://docs.python.org/3/whatsnew/3.0.html#library-changes > A common pattern in Python 2.x is to have one version of a module > implemented in pure Python, with an optional accelerated version > implemented as a C extension; for example, pickle and cPickle. This > places the burden of importing the accelerated version and falling > back on the pure Python version on each user of these modules. In > Python 3.0, the accelerated versions are considered implementation > details of the pure Python versions. Users should always import the > standard version, which attempts to import the accelerated version and > falls back to the pure Python version. The pickle / cPickle pair > received this treatment. Can now move the 'import pickle' to the top of the test file.
90 lines
2.9 KiB
Python
90 lines
2.9 KiB
Python
import pickle
|
|
|
|
from PIL import Image
|
|
|
|
from .helper import PillowTestCase
|
|
|
|
|
|
class TestPickle(PillowTestCase):
|
|
def helper_pickle_file(self, pickle, protocol=0, mode=None):
|
|
# Arrange
|
|
with Image.open("Tests/images/hopper.jpg") as im:
|
|
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
|
|
):
|
|
with Image.open(test_file) as im:
|
|
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):
|
|
# 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_pickle_p_mode(self):
|
|
# 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",
|
|
"Tests/images/itxt_chunks.png",
|
|
]:
|
|
for protocol in range(0, pickle.HIGHEST_PROTOCOL + 1):
|
|
self.helper_pickle_string(
|
|
pickle, protocol=protocol, test_file=test_file
|
|
)
|
|
|
|
def test_pickle_pa_mode(self):
|
|
# Act / Assert
|
|
for protocol in range(0, pickle.HIGHEST_PROTOCOL + 1):
|
|
self.helper_pickle_string(pickle, protocol, mode="PA")
|
|
self.helper_pickle_file(pickle, protocol, mode="PA")
|
|
|
|
def test_pickle_l_mode(self):
|
|
# 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_pickle_la_mode_with_palette(self):
|
|
# Arrange
|
|
filename = self.tempfile("temp.pkl")
|
|
with Image.open("Tests/images/hopper.jpg") as im:
|
|
im = im.convert("PA")
|
|
|
|
# Act / Assert
|
|
for protocol in range(0, pickle.HIGHEST_PROTOCOL + 1):
|
|
im.mode = "LA"
|
|
with open(filename, "wb") as f:
|
|
pickle.dump(im, f, protocol)
|
|
with open(filename, "rb") as f:
|
|
loaded_im = pickle.load(f)
|
|
|
|
im.mode = "PA"
|
|
self.assertEqual(im, loaded_im)
|