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61 lines
2.0 KiB
Python
61 lines
2.0 KiB
Python
import pytest
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from PIL import Image
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from .helper import hopper
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im = hopper().resize((128, 100))
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def test_toarray():
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def test(mode):
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ai = im.convert(mode).__array_interface__
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return ai["version"], ai["shape"], ai["typestr"], len(ai["data"])
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# assert test("1") == (3, (100, 128), '|b1', 1600))
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assert test("L") == (3, (100, 128), "|u1", 12800)
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# FIXME: wrong?
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assert test("I") == (3, (100, 128), Image._ENDIAN + "i4", 51200)
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# FIXME: wrong?
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assert test("F") == (3, (100, 128), Image._ENDIAN + "f4", 51200)
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assert test("LA") == (3, (100, 128, 2), "|u1", 25600)
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assert test("RGB") == (3, (100, 128, 3), "|u1", 38400)
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assert test("RGBA") == (3, (100, 128, 4), "|u1", 51200)
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assert test("RGBX") == (3, (100, 128, 4), "|u1", 51200)
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def test_fromarray():
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class Wrapper:
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""" Class with API matching Image.fromarray """
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def __init__(self, img, arr_params):
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self.img = img
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self.__array_interface__ = arr_params
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def tobytes(self):
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return self.img.tobytes()
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def test(mode):
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i = im.convert(mode)
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a = i.__array_interface__
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a["strides"] = 1 # pretend it's non-contiguous
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# Make wrapper instance for image, new array interface
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wrapped = Wrapper(i, a)
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out = Image.fromarray(wrapped)
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return out.mode, out.size, list(i.getdata()) == list(out.getdata())
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# assert test("1") == ("1", (128, 100), True)
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assert test("L") == ("L", (128, 100), True)
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assert test("I") == ("I", (128, 100), True)
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assert test("F") == ("F", (128, 100), True)
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assert test("LA") == ("LA", (128, 100), True)
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assert test("RGB") == ("RGB", (128, 100), True)
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assert test("RGBA") == ("RGBA", (128, 100), True)
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assert test("RGBX") == ("RGBA", (128, 100), True)
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# Test mode is None with no "typestr" in the array interface
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with pytest.raises(TypeError):
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wrapped = Wrapper(test("L"), {"shape": (100, 128)})
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Image.fromarray(wrapped)
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