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91 lines
2.5 KiB
Python
91 lines
2.5 KiB
Python
import pickle
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from PIL import Image
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def helper_pickle_file(tmp_path, 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 = str(tmp_path / "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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assert im == loaded_im
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def helper_pickle_string(
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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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assert im == loaded_im
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def test_pickle_image(tmp_path):
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# Act / Assert
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for protocol in range(0, pickle.HIGHEST_PROTOCOL + 1):
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helper_pickle_string(pickle, protocol)
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helper_pickle_file(tmp_path, pickle, protocol)
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def test_pickle_p_mode():
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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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helper_pickle_string(pickle, protocol=protocol, test_file=test_file)
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def test_pickle_pa_mode(tmp_path):
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# Act / Assert
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for protocol in range(0, pickle.HIGHEST_PROTOCOL + 1):
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helper_pickle_string(pickle, protocol, mode="PA")
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helper_pickle_file(tmp_path, pickle, protocol, mode="PA")
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def test_pickle_l_mode(tmp_path):
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# Act / Assert
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for protocol in range(0, pickle.HIGHEST_PROTOCOL + 1):
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helper_pickle_string(pickle, protocol, mode="L")
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helper_pickle_file(tmp_path, pickle, protocol, mode="L")
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def test_pickle_la_mode_with_palette(tmp_path):
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# Arrange
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filename = str(tmp_path / "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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assert im == loaded_im
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