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https://github.com/python-pillow/Pillow.git
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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
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from PIL import Image
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from .helper import PillowTestCase
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class TestPickle(PillowTestCase):
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def helper_pickle_file(self, pickle, protocol=0, mode=None):
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# Arrange
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with Image.open("Tests/images/hopper.jpg") as im:
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filename = self.tempfile("temp.pkl")
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if mode:
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im = im.convert(mode)
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# Act
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with open(filename, "wb") as f:
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pickle.dump(im, f, protocol)
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with open(filename, "rb") as f:
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loaded_im = pickle.load(f)
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# Assert
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self.assertEqual(im, loaded_im)
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def helper_pickle_string(
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self, pickle, protocol=0, test_file="Tests/images/hopper.jpg", mode=None
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):
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with Image.open(test_file) as im:
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if mode:
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im = im.convert(mode)
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# Act
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dumped_string = pickle.dumps(im, protocol)
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loaded_im = pickle.loads(dumped_string)
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# Assert
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self.assertEqual(im, loaded_im)
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def test_pickle_image(self):
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# Act / Assert
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for protocol in range(0, pickle.HIGHEST_PROTOCOL + 1):
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self.helper_pickle_string(pickle, protocol)
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self.helper_pickle_file(pickle, protocol)
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def test_pickle_p_mode(self):
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# Act / Assert
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for test_file in [
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"Tests/images/test-card.png",
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"Tests/images/zero_bb.png",
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"Tests/images/zero_bb_scale2.png",
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"Tests/images/non_zero_bb.png",
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"Tests/images/non_zero_bb_scale2.png",
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"Tests/images/p_trns_single.png",
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"Tests/images/pil123p.png",
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"Tests/images/itxt_chunks.png",
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]:
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for protocol in range(0, pickle.HIGHEST_PROTOCOL + 1):
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self.helper_pickle_string(
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pickle, protocol=protocol, test_file=test_file
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)
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def test_pickle_pa_mode(self):
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# Act / Assert
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for protocol in range(0, pickle.HIGHEST_PROTOCOL + 1):
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self.helper_pickle_string(pickle, protocol, mode="PA")
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self.helper_pickle_file(pickle, protocol, mode="PA")
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def test_pickle_l_mode(self):
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# Act / Assert
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for protocol in range(0, pickle.HIGHEST_PROTOCOL + 1):
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self.helper_pickle_string(pickle, protocol, mode="L")
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self.helper_pickle_file(pickle, protocol, mode="L")
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def test_pickle_la_mode_with_palette(self):
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# Arrange
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filename = self.tempfile("temp.pkl")
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with Image.open("Tests/images/hopper.jpg") as im:
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im = im.convert("PA")
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# Act / Assert
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for protocol in range(0, pickle.HIGHEST_PROTOCOL + 1):
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im.mode = "LA"
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with open(filename, "wb") as f:
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pickle.dump(im, f, protocol)
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with open(filename, "rb") as f:
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loaded_im = pickle.load(f)
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im.mode = "PA"
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self.assertEqual(im, loaded_im)
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