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126 lines
3.8 KiB
Python
126 lines
3.8 KiB
Python
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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# Arrange
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import pickle
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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_cpickle_image(self):
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# Arrange
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try:
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import cPickle
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except ImportError:
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return
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# Act / Assert
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for protocol in range(0, cPickle.HIGHEST_PROTOCOL + 1):
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self.helper_pickle_string(cPickle, protocol)
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self.helper_pickle_file(cPickle, protocol)
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def test_pickle_p_mode(self):
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# Arrange
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import pickle
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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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# Arrange
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import pickle
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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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# Arrange
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import pickle
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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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import pickle
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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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def test_cpickle_l_mode(self):
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# Arrange
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try:
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import cPickle
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except ImportError:
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return
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# Act / Assert
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for protocol in range(0, cPickle.HIGHEST_PROTOCOL + 1):
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self.helper_pickle_string(cPickle, protocol, mode="L")
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self.helper_pickle_file(cPickle, protocol, mode="L")
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