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Pillow/Tests/test_lib_pack.py
Jon Dufresne 4de5477b61 Remove unnecessary unittest.main() boilerplate from test files 
With the introduction and use of pytest, it is simple and easy to
execute specific tests in isolation through documented command line
arguments. Either by specifying the module path or through the `-k
EXPRESSION` argument. There is no longer any need to provide the
boilerplate:

    if __name__ == '__main__':
        unittest.main()

To every test file. It is simply noise.

The pattern remains in test files that aren't named with `test_*` as
those files are not discovered and executed by pytest by default.
2019-02-03 10:10:16 -08:00

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import sys
from .helper import PillowTestCase
from PIL import Image
X = 255
class TestLibPack(PillowTestCase):
def assert_pack(self, mode, rawmode, data, *pixels):
"""
data - either raw bytes with data or just number of bytes in rawmode.
"""
im = Image.new(mode, (len(pixels), 1))
for x, pixel in enumerate(pixels):
im.putpixel((x, 0), pixel)
if isinstance(data, int):
data_len = data * len(pixels)
data = bytes(bytearray(range(1, data_len + 1)))
self.assertEqual(data, im.tobytes("raw", rawmode))
def test_1(self):
self.assert_pack("1", "1", b'\x01', 0, 0, 0, 0, 0, 0, 0, X)
self.assert_pack("1", "1;I", b'\x01', X, X, X, X, X, X, X, 0)
self.assert_pack("1", "1;R", b'\x01', X, 0, 0, 0, 0, 0, 0, 0)
self.assert_pack("1", "1;IR", b'\x01', 0, X, X, X, X, X, X, X)
self.assert_pack("1", "1", b'\xaa', X, 0, X, 0, X, 0, X, 0)
self.assert_pack("1", "1;I", b'\xaa', 0, X, 0, X, 0, X, 0, X)
self.assert_pack("1", "1;R", b'\xaa', 0, X, 0, X, 0, X, 0, X)
self.assert_pack("1", "1;IR", b'\xaa', X, 0, X, 0, X, 0, X, 0)
self.assert_pack(
"1", "L", b'\xff\x00\x00\xff\x00\x00', X, 0, 0, X, 0, 0)
def test_L(self):
self.assert_pack("L", "L", 1, 1, 2, 3, 4)
self.assert_pack("L", "L;16", b'\x00\xc6\x00\xaf', 198, 175)
self.assert_pack("L", "L;16B", b'\xc6\x00\xaf\x00', 198, 175)
def test_LA(self):
self.assert_pack("LA", "LA", 2, (1, 2), (3, 4), (5, 6))
self.assert_pack("LA", "LA;L", 2, (1, 4), (2, 5), (3, 6))
def test_P(self):
self.assert_pack("P", "P;1", b'\xe4', 1, 1, 1, 0, 0, 255, 0, 0)
self.assert_pack("P", "P;2", b'\xe4', 3, 2, 1, 0)
self.assert_pack("P", "P;4", b'\x02\xef', 0, 2, 14, 15)
self.assert_pack("P", "P", 1, 1, 2, 3, 4)
def test_PA(self):
self.assert_pack("PA", "PA", 2, (1, 2), (3, 4), (5, 6))
self.assert_pack("PA", "PA;L", 2, (1, 4), (2, 5), (3, 6))
def test_RGB(self):
self.assert_pack("RGB", "RGB", 3, (1, 2, 3), (4, 5, 6), (7, 8, 9))
self.assert_pack(
"RGB", "RGBX",
b'\x01\x02\x03\xff\x05\x06\x07\xff', (1, 2, 3), (5, 6, 7))
self.assert_pack(
"RGB", "XRGB",
b'\x00\x02\x03\x04\x00\x06\x07\x08', (2, 3, 4), (6, 7, 8))
self.assert_pack("RGB", "BGR", 3, (3, 2, 1), (6, 5, 4), (9, 8, 7))
self.assert_pack(
"RGB", "BGRX",
b'\x01\x02\x03\x00\x05\x06\x07\x00', (3, 2, 1), (7, 6, 5))
self.assert_pack(
"RGB", "XBGR",
b'\x00\x02\x03\x04\x00\x06\x07\x08', (4, 3, 2), (8, 7, 6))
self.assert_pack("RGB", "RGB;L", 3, (1, 4, 7), (2, 5, 8), (3, 6, 9))
self.assert_pack("RGB", "R", 1, (1, 9, 9), (2, 9, 9), (3, 9, 9))
self.assert_pack("RGB", "G", 1, (9, 1, 9), (9, 2, 9), (9, 3, 9))
self.assert_pack("RGB", "B", 1, (9, 9, 1), (9, 9, 2), (9, 9, 3))
def test_RGBA(self):
self.assert_pack(
"RGBA", "RGBA", 4, (1, 2, 3, 4), (5, 6, 7, 8), (9, 10, 11, 12))
self.assert_pack(
"RGBA", "RGBA;L", 4, (1, 4, 7, 10), (2, 5, 8, 11), (3, 6, 9, 12))
self.assert_pack(
"RGBA", "RGB", 3, (1, 2, 3, 14), (4, 5, 6, 15), (7, 8, 9, 16))
self.assert_pack(
"RGBA", "BGR", 3, (3, 2, 1, 14), (6, 5, 4, 15), (9, 8, 7, 16))
self.assert_pack(
"RGBA", "BGRA", 4,
(3, 2, 1, 4), (7, 6, 5, 8), (11, 10, 9, 12))
self.assert_pack(
"RGBA", "ABGR", 4, (4, 3, 2, 1), (8, 7, 6, 5), (12, 11, 10, 9))
self.assert_pack(
"RGBA", "BGRa", 4,
(191, 127, 63, 4), (223, 191, 159, 8), (233, 212, 191, 12))
self.assert_pack(
"RGBA", "R", 1, (1, 0, 8, 9), (2, 0, 8, 9), (3, 0, 8, 0))
self.assert_pack(
"RGBA", "G", 1, (6, 1, 8, 9), (6, 2, 8, 9), (6, 3, 8, 9))
self.assert_pack(
"RGBA", "B", 1, (6, 7, 1, 9), (6, 7, 2, 0), (6, 7, 3, 9))
self.assert_pack(
"RGBA", "A", 1, (6, 7, 0, 1), (6, 7, 0, 2), (0, 7, 0, 3))
def test_RGBa(self):
self.assert_pack(
"RGBa", "RGBa", 4, (1, 2, 3, 4), (5, 6, 7, 8), (9, 10, 11, 12))
self.assert_pack(
"RGBa", "BGRa", 4, (3, 2, 1, 4), (7, 6, 5, 8), (11, 10, 9, 12))
self.assert_pack(
"RGBa", "aBGR", 4, (4, 3, 2, 1), (8, 7, 6, 5), (12, 11, 10, 9))
def test_RGBX(self):
self.assert_pack(
"RGBX", "RGBX", 4, (1, 2, 3, 4), (5, 6, 7, 8), (9, 10, 11, 12))
self.assert_pack(
"RGBX", "RGBX;L", 4, (1, 4, 7, 10), (2, 5, 8, 11), (3, 6, 9, 12))
self.assert_pack(
"RGBX", "RGB", 3, (1, 2, 3, X), (4, 5, 6, X), (7, 8, 9, X))
self.assert_pack(
"RGBX", "BGR", 3, (3, 2, 1, X), (6, 5, 4, X), (9, 8, 7, X))
self.assert_pack(
"RGBX", "BGRX",
b'\x01\x02\x03\x00\x05\x06\x07\x00\t\n\x0b\x00',
(3, 2, 1, X), (7, 6, 5, X), (11, 10, 9, X))
self.assert_pack(
"RGBX", "XBGR",
b'\x00\x02\x03\x04\x00\x06\x07\x08\x00\n\x0b\x0c',
(4, 3, 2, X), (8, 7, 6, X), (12, 11, 10, X))
self.assert_pack("RGBX", "R", 1,
(1, 0, 8, 9), (2, 0, 8, 9), (3, 0, 8, 0))
self.assert_pack("RGBX", "G", 1,
(6, 1, 8, 9), (6, 2, 8, 9), (6, 3, 8, 9))
self.assert_pack("RGBX", "B", 1,
(6, 7, 1, 9), (6, 7, 2, 0), (6, 7, 3, 9))
self.assert_pack("RGBX", "X", 1,
(6, 7, 0, 1), (6, 7, 0, 2), (0, 7, 0, 3))
def test_CMYK(self):
self.assert_pack("CMYK", "CMYK", 4,
(1, 2, 3, 4), (5, 6, 7, 8), (9, 10, 11, 12))
self.assert_pack(
"CMYK", "CMYK;I", 4,
(254, 253, 252, 251), (250, 249, 248, 247), (246, 245, 244, 243))
self.assert_pack(
"CMYK", "CMYK;L", 4, (1, 4, 7, 10), (2, 5, 8, 11), (3, 6, 9, 12))
self.assert_pack("CMYK", "K", 1,
(6, 7, 0, 1), (6, 7, 0, 2), (0, 7, 0, 3))
def test_YCbCr(self):
self.assert_pack("YCbCr", "YCbCr", 3, (1, 2, 3), (4, 5, 6), (7, 8, 9))
self.assert_pack("YCbCr", "YCbCr;L", 3,
(1, 4, 7), (2, 5, 8), (3, 6, 9))
self.assert_pack(
"YCbCr", "YCbCrX",
b'\x01\x02\x03\xff\x05\x06\x07\xff\t\n\x0b\xff',
(1, 2, 3), (5, 6, 7), (9, 10, 11))
self.assert_pack(
"YCbCr", "YCbCrK",
b'\x01\x02\x03\xff\x05\x06\x07\xff\t\n\x0b\xff',
(1, 2, 3), (5, 6, 7), (9, 10, 11))
self.assert_pack("YCbCr", "Y", 1,
(1, 0, 8, 9), (2, 0, 8, 9), (3, 0, 8, 0))
self.assert_pack("YCbCr", "Cb", 1,
(6, 1, 8, 9), (6, 2, 8, 9), (6, 3, 8, 9))
self.assert_pack("YCbCr", "Cr", 1,
(6, 7, 1, 9), (6, 7, 2, 0), (6, 7, 3, 9))
def test_LAB(self):
self.assert_pack(
"LAB", "LAB", 3, (1, 130, 131), (4, 133, 134), (7, 136, 137))
self.assert_pack("LAB", "L", 1, (1, 9, 9), (2, 9, 9), (3, 9, 9))
self.assert_pack("LAB", "A", 1, (9, 1, 9), (9, 2, 9), (9, 3, 9))
self.assert_pack("LAB", "B", 1, (9, 9, 1), (9, 9, 2), (9, 9, 3))
def test_HSV(self):
self.assert_pack("HSV", "HSV", 3, (1, 2, 3), (4, 5, 6), (7, 8, 9))
self.assert_pack("HSV", "H", 1, (1, 9, 9), (2, 9, 9), (3, 9, 9))
self.assert_pack("HSV", "S", 1, (9, 1, 9), (9, 2, 9), (9, 3, 9))
self.assert_pack("HSV", "V", 1, (9, 9, 1), (9, 9, 2), (9, 9, 3))
def test_I(self):
self.assert_pack("I", "I;16B", 2, 0x0102, 0x0304)
self.assert_pack(
"I", "I;32S",
b'\x83\x00\x00\x01\x01\x00\x00\x83', 0x01000083, -2097151999)
if sys.byteorder == 'little':
self.assert_pack("I", "I", 4, 0x04030201, 0x08070605)
self.assert_pack(
"I", "I;32NS",
b'\x83\x00\x00\x01\x01\x00\x00\x83', 0x01000083, -2097151999)
else:
self.assert_pack("I", "I", 4, 0x01020304, 0x05060708)
self.assert_pack(
"I", "I;32NS",
b'\x83\x00\x00\x01\x01\x00\x00\x83', -2097151999, 0x01000083)
def test_F_float(self):
self.assert_pack(
"F", "F;32F", 4, 1.539989614439558e-36, 4.063216068939723e-34)
if sys.byteorder == 'little':
self.assert_pack(
"F", "F", 4, 1.539989614439558e-36, 4.063216068939723e-34)
self.assert_pack(
"F", "F;32NF", 4, 1.539989614439558e-36, 4.063216068939723e-34)
else:
self.assert_pack(
"F", "F", 4, 2.387939260590663e-38, 6.301941157072183e-36)
self.assert_pack(
"F", "F;32NF", 4, 2.387939260590663e-38, 6.301941157072183e-36)
class TestLibUnpack(PillowTestCase):
def assert_unpack(self, mode, rawmode, data, *pixels):
"""
data - either raw bytes with data or just number of bytes in rawmode.
"""
if isinstance(data, int):
data_len = data * len(pixels)
data = bytes(bytearray(range(1, data_len + 1)))
im = Image.frombytes(mode, (len(pixels), 1), data,
"raw", rawmode, 0, 1)
for x, pixel in enumerate(pixels):
self.assertEqual(pixel, im.getpixel((x, 0)))
def test_1(self):
self.assert_unpack("1", "1", b'\x01', 0, 0, 0, 0, 0, 0, 0, X)
self.assert_unpack("1", "1;I", b'\x01', X, X, X, X, X, X, X, 0)
self.assert_unpack("1", "1;R", b'\x01', X, 0, 0, 0, 0, 0, 0, 0)
self.assert_unpack("1", "1;IR", b'\x01', 0, X, X, X, X, X, X, X)
self.assert_unpack("1", "1", b'\xaa', X, 0, X, 0, X, 0, X, 0)
self.assert_unpack("1", "1;I", b'\xaa', 0, X, 0, X, 0, X, 0, X)
self.assert_unpack("1", "1;R", b'\xaa', 0, X, 0, X, 0, X, 0, X)
self.assert_unpack("1", "1;IR", b'\xaa', X, 0, X, 0, X, 0, X, 0)
self.assert_unpack("1", "1;8", b'\x00\x01\x02\xff', 0, X, X, X)
def test_L(self):
self.assert_unpack("L", "L;2", b'\xe4', 255, 170, 85, 0)
self.assert_unpack("L", "L;2I", b'\xe4', 0, 85, 170, 255)
self.assert_unpack("L", "L;2R", b'\xe4', 0, 170, 85, 255)
self.assert_unpack("L", "L;2IR", b'\xe4', 255, 85, 170, 0)
self.assert_unpack("L", "L;4", b'\x02\xef', 0, 34, 238, 255)
self.assert_unpack("L", "L;4I", b'\x02\xef', 255, 221, 17, 0)
self.assert_unpack("L", "L;4R", b'\x02\xef', 68, 0, 255, 119)
self.assert_unpack("L", "L;4IR", b'\x02\xef', 187, 255, 0, 136)
self.assert_unpack("L", "L", 1, 1, 2, 3, 4)
self.assert_unpack("L", "L;I", 1, 254, 253, 252, 251)
self.assert_unpack("L", "L;R", 1, 128, 64, 192, 32)
self.assert_unpack("L", "L;16", 2, 2, 4, 6, 8)
self.assert_unpack("L", "L;16B", 2, 1, 3, 5, 7)
self.assert_unpack("L", "L;16", b'\x00\xc6\x00\xaf', 198, 175)
self.assert_unpack("L", "L;16B", b'\xc6\x00\xaf\x00', 198, 175)
def test_LA(self):
self.assert_unpack("LA", "LA", 2, (1, 2), (3, 4), (5, 6))
self.assert_unpack("LA", "LA;L", 2, (1, 4), (2, 5), (3, 6))
def test_P(self):
self.assert_unpack("P", "P;1", b'\xe4', 1, 1, 1, 0, 0, 1, 0, 0)
self.assert_unpack("P", "P;2", b'\xe4', 3, 2, 1, 0)
# erroneous?
# self.assert_unpack("P", "P;2L", b'\xe4', 1, 1, 1, 0)
self.assert_unpack("P", "P;4", b'\x02\xef', 0, 2, 14, 15)
# erroneous?
# self.assert_unpack("P", "P;4L", b'\x02\xef', 2, 10, 10, 0)
self.assert_unpack("P", "P", 1, 1, 2, 3, 4)
self.assert_unpack("P", "P;R", 1, 128, 64, 192, 32)
def test_PA(self):
self.assert_unpack("PA", "PA", 2, (1, 2), (3, 4), (5, 6))
self.assert_unpack("PA", "PA;L", 2, (1, 4), (2, 5), (3, 6))
def test_RGB(self):
self.assert_unpack("RGB", "RGB", 3, (1, 2, 3), (4, 5, 6), (7, 8, 9))
self.assert_unpack("RGB", "RGB;L", 3, (1, 4, 7), (2, 5, 8), (3, 6, 9))
self.assert_unpack("RGB", "RGB;R", 3, (128, 64, 192), (32, 160, 96))
self.assert_unpack("RGB", "RGB;16L", 6, (2, 4, 6), (8, 10, 12))
self.assert_unpack("RGB", "RGB;16B", 6, (1, 3, 5), (7, 9, 11))
self.assert_unpack("RGB", "BGR", 3, (3, 2, 1), (6, 5, 4), (9, 8, 7))
self.assert_unpack("RGB", "RGB;15", 2, (8, 131, 0), (24, 0, 8))
self.assert_unpack("RGB", "BGR;15", 2, (0, 131, 8), (8, 0, 24))
self.assert_unpack("RGB", "RGB;16", 2, (8, 64, 0), (24, 129, 0))
self.assert_unpack("RGB", "BGR;16", 2, (0, 64, 8), (0, 129, 24))
self.assert_unpack("RGB", "RGB;4B", 2, (17, 0, 34), (51, 0, 68))
self.assert_unpack("RGB", "RGBX", 4, (1, 2, 3), (5, 6, 7), (9, 10, 11))
self.assert_unpack("RGB", "RGBX;L", 4, (1, 4, 7), (2, 5, 8), (3, 6, 9))
self.assert_unpack("RGB", "BGRX", 4, (3, 2, 1), (7, 6, 5), (11, 10, 9))
self.assert_unpack(
"RGB", "XRGB", 4, (2, 3, 4), (6, 7, 8), (10, 11, 12))
self.assert_unpack(
"RGB", "XBGR", 4, (4, 3, 2), (8, 7, 6), (12, 11, 10))
self.assert_unpack(
"RGB", "YCC;P",
b'D]\x9c\x82\x1a\x91\xfaOC\xe7J\x12', # random data
(127, 102, 0), (192, 227, 0), (213, 255, 170), (98, 255, 133))
self.assert_unpack("RGB", "R", 1, (1, 0, 0), (2, 0, 0), (3, 0, 0))
self.assert_unpack("RGB", "G", 1, (0, 1, 0), (0, 2, 0), (0, 3, 0))
self.assert_unpack("RGB", "B", 1, (0, 0, 1), (0, 0, 2), (0, 0, 3))
def test_RGBA(self):
self.assert_unpack(
"RGBA", "LA", 2, (1, 1, 1, 2), (3, 3, 3, 4), (5, 5, 5, 6))
self.assert_unpack(
"RGBA", "LA;16B", 4, (1, 1, 1, 3), (5, 5, 5, 7), (9, 9, 9, 11))
self.assert_unpack(
"RGBA", "RGBA", 4, (1, 2, 3, 4), (5, 6, 7, 8), (9, 10, 11, 12))
self.assert_unpack(
"RGBA", "RGBAX", 5, (1, 2, 3, 4), (6, 7, 8, 9), (11, 12, 13, 14))
self.assert_unpack(
"RGBA", "RGBAXX", 6, (1, 2, 3, 4), (7, 8, 9, 10), (13, 14, 15, 16))
self.assert_unpack(
"RGBA", "RGBa", 4,
(63, 127, 191, 4), (159, 191, 223, 8), (191, 212, 233, 12))
self.assert_unpack(
"RGBA", "RGBa",
b'\x01\x02\x03\x00\x10\x20\x30\x7f\x10\x20\x30\xff',
(0, 0, 0, 0), (32, 64, 96, 127), (16, 32, 48, 255))
self.assert_unpack(
"RGBA", "RGBaX",
b'\x01\x02\x03\x00-\x10\x20\x30\x7f-\x10\x20\x30\xff-',
(0, 0, 0, 0), (32, 64, 96, 127), (16, 32, 48, 255))
self.assert_unpack(
"RGBA", "RGBaXX",
b'\x01\x02\x03\x00==\x10\x20\x30\x7f!!\x10\x20\x30\xff??',
(0, 0, 0, 0), (32, 64, 96, 127), (16, 32, 48, 255))
self.assert_unpack(
"RGBA", "RGBa;16L", 8,
(63, 127, 191, 8), (159, 191, 223, 16), (191, 212, 233, 24))
self.assert_unpack(
"RGBA", "RGBa;16L",
b'\x88\x01\x88\x02\x88\x03\x88\x00'
b'\x88\x10\x88\x20\x88\x30\x88\xff',
(0, 0, 0, 0), (16, 32, 48, 255))
self.assert_unpack(
"RGBA", "RGBa;16B", 8,
(36, 109, 182, 7), (153, 187, 221, 15), (188, 210, 232, 23))
self.assert_unpack(
"RGBA", "RGBa;16B",
b'\x01\x88\x02\x88\x03\x88\x00\x88'
b'\x10\x88\x20\x88\x30\x88\xff\x88',
(0, 0, 0, 0), (16, 32, 48, 255))
self.assert_unpack(
"RGBA", "BGRa", 4,
(191, 127, 63, 4), (223, 191, 159, 8), (233, 212, 191, 12))
self.assert_unpack(
"RGBA", "BGRa",
b'\x01\x02\x03\x00\x10\x20\x30\xff',
(0, 0, 0, 0), (48, 32, 16, 255))
self.assert_unpack(
"RGBA", "RGBA;I", 4,
(254, 253, 252, 4), (250, 249, 248, 8), (246, 245, 244, 12))
self.assert_unpack(
"RGBA", "RGBA;L", 4, (1, 4, 7, 10), (2, 5, 8, 11), (3, 6, 9, 12))
self.assert_unpack("RGBA", "RGBA;15", 2, (8, 131, 0, 0), (24, 0, 8, 0))
self.assert_unpack("RGBA", "BGRA;15", 2, (0, 131, 8, 0), (8, 0, 24, 0))
self.assert_unpack(
"RGBA", "RGBA;4B", 2, (17, 0, 34, 0), (51, 0, 68, 0))
self.assert_unpack(
"RGBA", "RGBA;16L", 8, (2, 4, 6, 8), (10, 12, 14, 16))
self.assert_unpack(
"RGBA", "RGBA;16B", 8, (1, 3, 5, 7), (9, 11, 13, 15))
self.assert_unpack(
"RGBA", "BGRA", 4, (3, 2, 1, 4), (7, 6, 5, 8), (11, 10, 9, 12))
self.assert_unpack(
"RGBA", "ARGB", 4, (2, 3, 4, 1), (6, 7, 8, 5), (10, 11, 12, 9))
self.assert_unpack(
"RGBA", "ABGR", 4, (4, 3, 2, 1), (8, 7, 6, 5), (12, 11, 10, 9))
self.assert_unpack(
"RGBA", "YCCA;P",
b']bE\x04\xdd\xbej\xed57T\xce\xac\xce:\x11', # random data
(0, 161, 0, 4), (255, 255, 255, 237),
(27, 158, 0, 206), (0, 118, 0, 17))
self.assert_unpack(
"RGBA", "R", 1, (1, 0, 0, 0), (2, 0, 0, 0), (3, 0, 0, 0))
self.assert_unpack(
"RGBA", "G", 1, (0, 1, 0, 0), (0, 2, 0, 0), (0, 3, 0, 0))
self.assert_unpack(
"RGBA", "B", 1, (0, 0, 1, 0), (0, 0, 2, 0), (0, 0, 3, 0))
self.assert_unpack(
"RGBA", "A", 1, (0, 0, 0, 1), (0, 0, 0, 2), (0, 0, 0, 3))
def test_RGBa(self):
self.assert_unpack(
"RGBa", "RGBa", 4, (1, 2, 3, 4), (5, 6, 7, 8), (9, 10, 11, 12))
self.assert_unpack(
"RGBa", "BGRa", 4, (3, 2, 1, 4), (7, 6, 5, 8), (11, 10, 9, 12))
self.assert_unpack(
"RGBa", "aRGB", 4, (2, 3, 4, 1), (6, 7, 8, 5), (10, 11, 12, 9))
self.assert_unpack(
"RGBa", "aBGR", 4, (4, 3, 2, 1), (8, 7, 6, 5), (12, 11, 10, 9))
def test_RGBX(self):
self.assert_unpack("RGBX", "RGB", 3,
(1, 2, 3, X), (4, 5, 6, X), (7, 8, 9, X))
self.assert_unpack("RGBX", "RGB;L", 3,
(1, 4, 7, X), (2, 5, 8, X), (3, 6, 9, X))
self.assert_unpack("RGBX", "RGB;16B", 6, (1, 3, 5, X), (7, 9, 11, X))
self.assert_unpack("RGBX", "BGR", 3,
(3, 2, 1, X), (6, 5, 4, X), (9, 8, 7, X))
self.assert_unpack("RGBX", "RGB;15", 2, (8, 131, 0, X), (24, 0, 8, X))
self.assert_unpack("RGBX", "BGR;15", 2, (0, 131, 8, X), (8, 0, 24, X))
self.assert_unpack("RGBX", "RGB;4B", 2, (17, 0, 34, X), (51, 0, 68, X))
self.assert_unpack(
"RGBX", "RGBX", 4, (1, 2, 3, 4), (5, 6, 7, 8), (9, 10, 11, 12))
self.assert_unpack(
"RGBX", "RGBXX", 5, (1, 2, 3, 4), (6, 7, 8, 9), (11, 12, 13, 14))
self.assert_unpack(
"RGBX", "RGBXXX", 6, (1, 2, 3, 4), (7, 8, 9, 10), (13, 14, 15, 16))
self.assert_unpack(
"RGBX", "RGBX;L", 4, (1, 4, 7, 10), (2, 5, 8, 11), (3, 6, 9, 12))
self.assert_unpack("RGBX", "RGBX;16L", 8,
(2, 4, 6, 8), (10, 12, 14, 16))
self.assert_unpack("RGBX", "RGBX;16B", 8,
(1, 3, 5, 7), (9, 11, 13, 15))
self.assert_unpack("RGBX", "BGRX", 4,
(3, 2, 1, X), (7, 6, 5, X), (11, 10, 9, X))
self.assert_unpack("RGBX", "XRGB", 4,
(2, 3, 4, X), (6, 7, 8, X), (10, 11, 12, X))
self.assert_unpack("RGBX", "XBGR", 4,
(4, 3, 2, X), (8, 7, 6, X), (12, 11, 10, X))
self.assert_unpack(
"RGBX", "YCC;P",
b'D]\x9c\x82\x1a\x91\xfaOC\xe7J\x12', # random data
(127, 102, 0, X), (192, 227, 0, X),
(213, 255, 170, X), (98, 255, 133, X))
self.assert_unpack("RGBX", "R", 1,
(1, 0, 0, 0), (2, 0, 0, 0), (3, 0, 0, 0))
self.assert_unpack("RGBX", "G", 1,
(0, 1, 0, 0), (0, 2, 0, 0), (0, 3, 0, 0))
self.assert_unpack("RGBX", "B", 1,
(0, 0, 1, 0), (0, 0, 2, 0), (0, 0, 3, 0))
self.assert_unpack("RGBX", "X", 1,
(0, 0, 0, 1), (0, 0, 0, 2), (0, 0, 0, 3))
def test_CMYK(self):
self.assert_unpack(
"CMYK", "CMYK", 4, (1, 2, 3, 4), (5, 6, 7, 8), (9, 10, 11, 12))
self.assert_unpack(
"CMYK", "CMYKX", 5, (1, 2, 3, 4), (6, 7, 8, 9), (11, 12, 13, 14))
self.assert_unpack(
"CMYK", "CMYKXX", 6, (1, 2, 3, 4), (7, 8, 9, 10), (13, 14, 15, 16))
self.assert_unpack(
"CMYK", "CMYK;I", 4,
(254, 253, 252, 251), (250, 249, 248, 247), (246, 245, 244, 243))
self.assert_unpack(
"CMYK", "CMYK;L", 4, (1, 4, 7, 10), (2, 5, 8, 11), (3, 6, 9, 12))
self.assert_unpack("CMYK", "C", 1,
(1, 0, 0, 0), (2, 0, 0, 0), (3, 0, 0, 0))
self.assert_unpack("CMYK", "M", 1,
(0, 1, 0, 0), (0, 2, 0, 0), (0, 3, 0, 0))
self.assert_unpack("CMYK", "Y", 1,
(0, 0, 1, 0), (0, 0, 2, 0), (0, 0, 3, 0))
self.assert_unpack("CMYK", "K", 1,
(0, 0, 0, 1), (0, 0, 0, 2), (0, 0, 0, 3))
self.assert_unpack(
"CMYK", "C;I", 1, (254, 0, 0, 0), (253, 0, 0, 0), (252, 0, 0, 0))
self.assert_unpack(
"CMYK", "M;I", 1, (0, 254, 0, 0), (0, 253, 0, 0), (0, 252, 0, 0))
self.assert_unpack(
"CMYK", "Y;I", 1, (0, 0, 254, 0), (0, 0, 253, 0), (0, 0, 252, 0))
self.assert_unpack(
"CMYK", "K;I", 1, (0, 0, 0, 254), (0, 0, 0, 253), (0, 0, 0, 252))
def test_YCbCr(self):
self.assert_unpack(
"YCbCr", "YCbCr", 3, (1, 2, 3), (4, 5, 6), (7, 8, 9))
self.assert_unpack(
"YCbCr", "YCbCr;L", 3, (1, 4, 7), (2, 5, 8), (3, 6, 9))
self.assert_unpack(
"YCbCr", "YCbCrK", 4, (1, 2, 3), (5, 6, 7), (9, 10, 11))
self.assert_unpack(
"YCbCr", "YCbCrX", 4, (1, 2, 3), (5, 6, 7), (9, 10, 11))
def test_LAB(self):
self.assert_unpack(
"LAB", "LAB", 3, (1, 130, 131), (4, 133, 134), (7, 136, 137))
self.assert_unpack("LAB", "L", 1, (1, 0, 0), (2, 0, 0), (3, 0, 0))
self.assert_unpack("LAB", "A", 1, (0, 1, 0), (0, 2, 0), (0, 3, 0))
self.assert_unpack("LAB", "B", 1, (0, 0, 1), (0, 0, 2), (0, 0, 3))
def test_HSV(self):
self.assert_unpack("HSV", "HSV", 3, (1, 2, 3), (4, 5, 6), (7, 8, 9))
self.assert_unpack("HSV", "H", 1, (1, 0, 0), (2, 0, 0), (3, 0, 0))
self.assert_unpack("HSV", "S", 1, (0, 1, 0), (0, 2, 0), (0, 3, 0))
self.assert_unpack("HSV", "V", 1, (0, 0, 1), (0, 0, 2), (0, 0, 3))
def test_I(self):
self.assert_unpack("I", "I;8", 1, 0x01, 0x02, 0x03, 0x04)
self.assert_unpack("I", "I;8S", b'\x01\x83', 1, -125)
self.assert_unpack("I", "I;16", 2, 0x0201, 0x0403)
self.assert_unpack("I", "I;16S", b'\x83\x01\x01\x83', 0x0183, -31999)
self.assert_unpack("I", "I;16B", 2, 0x0102, 0x0304)
self.assert_unpack("I", "I;16BS", b'\x83\x01\x01\x83', -31999, 0x0183)
self.assert_unpack("I", "I;32", 4, 0x04030201, 0x08070605)
self.assert_unpack(
"I", "I;32S",
b'\x83\x00\x00\x01\x01\x00\x00\x83', 0x01000083, -2097151999)
self.assert_unpack("I", "I;32B", 4, 0x01020304, 0x05060708)
self.assert_unpack(
"I", "I;32BS",
b'\x83\x00\x00\x01\x01\x00\x00\x83', -2097151999, 0x01000083)
if sys.byteorder == 'little':
self.assert_unpack("I", "I", 4, 0x04030201, 0x08070605)
self.assert_unpack("I", "I;16N", 2, 0x0201, 0x0403)
self.assert_unpack("I", "I;16NS",
b'\x83\x01\x01\x83', 0x0183, -31999)
self.assert_unpack("I", "I;32N", 4, 0x04030201, 0x08070605)
self.assert_unpack(
"I", "I;32NS",
b'\x83\x00\x00\x01\x01\x00\x00\x83', 0x01000083, -2097151999)
else:
self.assert_unpack("I", "I", 4, 0x01020304, 0x05060708)
self.assert_unpack("I", "I;16N", 2, 0x0102, 0x0304)
self.assert_unpack("I", "I;16NS",
b'\x83\x01\x01\x83', -31999, 0x0183)
self.assert_unpack("I", "I;32N", 4, 0x01020304, 0x05060708)
self.assert_unpack(
"I", "I;32NS",
b'\x83\x00\x00\x01\x01\x00\x00\x83', -2097151999, 0x01000083)
def test_F_int(self):
self.assert_unpack("F", "F;8", 1, 0x01, 0x02, 0x03, 0x04)
self.assert_unpack("F", "F;8S", b'\x01\x83', 1, -125)
self.assert_unpack("F", "F;16", 2, 0x0201, 0x0403)
self.assert_unpack("F", "F;16S", b'\x83\x01\x01\x83', 0x0183, -31999)
self.assert_unpack("F", "F;16B", 2, 0x0102, 0x0304)
self.assert_unpack("F", "F;16BS", b'\x83\x01\x01\x83', -31999, 0x0183)
self.assert_unpack("F", "F;32", 4, 67305984, 134678016)
self.assert_unpack(
"F", "F;32S",
b'\x83\x00\x00\x01\x01\x00\x00\x83', 16777348, -2097152000)
self.assert_unpack("F", "F;32B", 4, 0x01020304, 0x05060708)
self.assert_unpack(
"F", "F;32BS",
b'\x83\x00\x00\x01\x01\x00\x00\x83', -2097152000, 16777348)
if sys.byteorder == 'little':
self.assert_unpack("F", "F;16N", 2, 0x0201, 0x0403)
self.assert_unpack(
"F", "F;16NS",
b'\x83\x01\x01\x83', 0x0183, -31999)
self.assert_unpack("F", "F;32N", 4, 67305984, 134678016)
self.assert_unpack(
"F", "F;32NS",
b'\x83\x00\x00\x01\x01\x00\x00\x83', 16777348, -2097152000)
else:
self.assert_unpack("F", "F;16N", 2, 0x0102, 0x0304)
self.assert_unpack(
"F", "F;16NS",
b'\x83\x01\x01\x83', -31999, 0x0183)
self.assert_unpack("F", "F;32N", 4, 0x01020304, 0x05060708)
self.assert_unpack(
"F", "F;32NS",
b'\x83\x00\x00\x01\x01\x00\x00\x83',
-2097152000, 16777348)
def test_F_float(self):
self.assert_unpack(
"F", "F;32F", 4,
1.539989614439558e-36, 4.063216068939723e-34)
self.assert_unpack(
"F", "F;32BF", 4,
2.387939260590663e-38, 6.301941157072183e-36)
self.assert_unpack(
"F", "F;64F",
b'333333\xc3?\x00\x00\x00\x00\x00J\x93\xc0', # by struct.pack
0.15000000596046448, -1234.5)
self.assert_unpack(
"F", "F;64BF",
b'?\xc3333333\xc0\x93J\x00\x00\x00\x00\x00', # by struct.pack
0.15000000596046448, -1234.5)
if sys.byteorder == 'little':
self.assert_unpack(
"F", "F", 4,
1.539989614439558e-36, 4.063216068939723e-34)
self.assert_unpack(
"F", "F;32NF", 4,
1.539989614439558e-36, 4.063216068939723e-34)
self.assert_unpack(
"F", "F;64NF",
b'333333\xc3?\x00\x00\x00\x00\x00J\x93\xc0',
0.15000000596046448, -1234.5)
else:
self.assert_unpack(
"F", "F", 4,
2.387939260590663e-38, 6.301941157072183e-36)
self.assert_unpack(
"F", "F;32NF", 4,
2.387939260590663e-38, 6.301941157072183e-36)
self.assert_unpack(
"F", "F;64NF",
b'?\xc3333333\xc0\x93J\x00\x00\x00\x00\x00',
0.15000000596046448, -1234.5)
def test_I16(self):
self.assert_unpack("I;16", "I;16", 2, 0x0201, 0x0403, 0x0605)
self.assert_unpack("I;16B", "I;16B", 2, 0x0102, 0x0304, 0x0506)
self.assert_unpack("I;16L", "I;16L", 2, 0x0201, 0x0403, 0x0605)
self.assert_unpack("I;16", "I;12", 2, 0x0010, 0x0203, 0x0040)
if sys.byteorder == 'little':
self.assert_unpack("I;16", "I;16N", 2, 0x0201, 0x0403, 0x0605)
self.assert_unpack("I;16B", "I;16N", 2, 0x0201, 0x0403, 0x0605)
self.assert_unpack("I;16L", "I;16N", 2, 0x0201, 0x0403, 0x0605)
else:
self.assert_unpack("I;16", "I;16N", 2, 0x0102, 0x0304, 0x0506)
self.assert_unpack("I;16B", "I;16N", 2, 0x0102, 0x0304, 0x0506)
self.assert_unpack("I;16L", "I;16N", 2, 0x0102, 0x0304, 0x0506)
def test_value_error(self):
self.assertRaises(ValueError, self.assert_unpack, "L", "L", 0, 0)
self.assertRaises(ValueError, self.assert_unpack, "RGB", "RGB", 2, 0)
self.assertRaises(ValueError, self.assert_unpack, "CMYK", "CMYK", 2, 0)
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