from helper import unittest, PillowTestCase, py3 from PIL import Image class TestLibPack(PillowTestCase): def pack(self): pass # not yet def test_pack(self): def pack(mode, rawmode): if len(mode) == 1: im = Image.new(mode, (1, 1), 1) else: im = Image.new(mode, (1, 1), (1, 2, 3, 4)[:len(mode)]) if py3: return list(im.tobytes("raw", rawmode)) else: return [ord(c) for c in im.tobytes("raw", rawmode)] order = 1 if Image._ENDIAN == '<' else -1 self.assertEqual(pack("1", "1"), [128]) self.assertEqual(pack("1", "1;I"), [0]) self.assertEqual(pack("1", "1;R"), [1]) self.assertEqual(pack("1", "1;IR"), [0]) self.assertEqual(pack("L", "L"), [1]) self.assertEqual(pack("I", "I"), [1, 0, 0, 0][::order]) self.assertEqual(pack("F", "F"), [0, 0, 128, 63][::order]) self.assertEqual(pack("LA", "LA"), [1, 2]) self.assertEqual(pack("RGB", "RGB"), [1, 2, 3]) self.assertEqual(pack("RGB", "RGB;L"), [1, 2, 3]) self.assertEqual(pack("RGB", "BGR"), [3, 2, 1]) self.assertEqual(pack("RGB", "RGBX"), [1, 2, 3, 255]) # 255? self.assertEqual(pack("RGB", "BGRX"), [3, 2, 1, 0]) self.assertEqual(pack("RGB", "XRGB"), [0, 1, 2, 3]) self.assertEqual(pack("RGB", "XBGR"), [0, 3, 2, 1]) self.assertEqual(pack("RGBX", "RGBX"), [1, 2, 3, 4]) # 4->255? self.assertEqual(pack("RGBA", "RGBA"), [1, 2, 3, 4]) self.assertEqual(pack("RGBa", "RGBa"), [1, 2, 3, 4]) self.assertEqual(pack("RGBa", "BGRa"), [3, 2, 1, 4]) self.assertEqual(pack("RGBa", "aBGR"), [4, 3, 2, 1]) self.assertEqual(pack("CMYK", "CMYK"), [1, 2, 3, 4]) self.assertEqual(pack("YCbCr", "YCbCr"), [1, 2, 3]) def test_unpack(self): def unpack(mode, rawmode, bytes_): im = None if py3: data = bytes(range(1, bytes_+1)) else: data = ''.join(chr(i) for i in range(1, bytes_+1)) im = Image.frombytes(mode, (1, 1), data, "raw", rawmode, 0, 1) return im.getpixel((0, 0)) def unpack_1(mode, rawmode, value): assert mode == "1" im = None if py3: im = Image.frombytes( mode, (8, 1), bytes([value]), "raw", rawmode, 0, 1) else: im = Image.frombytes( mode, (8, 1), chr(value), "raw", rawmode, 0, 1) return tuple(im.getdata()) X = 255 self.assertEqual(unpack_1("1", "1", 1), (0, 0, 0, 0, 0, 0, 0, X)) self.assertEqual(unpack_1("1", "1;I", 1), (X, X, X, X, X, X, X, 0)) self.assertEqual(unpack_1("1", "1;R", 1), (X, 0, 0, 0, 0, 0, 0, 0)) self.assertEqual(unpack_1("1", "1;IR", 1), (0, X, X, X, X, X, X, X)) self.assertEqual(unpack_1("1", "1", 170), (X, 0, X, 0, X, 0, X, 0)) self.assertEqual(unpack_1("1", "1;I", 170), (0, X, 0, X, 0, X, 0, X)) self.assertEqual(unpack_1("1", "1;R", 170), (0, X, 0, X, 0, X, 0, X)) self.assertEqual(unpack_1("1", "1;IR", 170), (X, 0, X, 0, X, 0, X, 0)) self.assertEqual(unpack("L", "L;2", 1), 0) self.assertEqual(unpack("L", "L;4", 1), 0) self.assertEqual(unpack("L", "L", 1), 1) self.assertEqual(unpack("L", "L;I", 1), 254) self.assertEqual(unpack("L", "L;R", 1), 128) self.assertEqual(unpack("L", "L;16", 2), 2) # little endian self.assertEqual(unpack("L", "L;16B", 2), 1) # big endian self.assertEqual(unpack("LA", "LA", 2), (1, 2)) self.assertEqual(unpack("LA", "LA;L", 2), (1, 2)) self.assertEqual(unpack("RGB", "RGB", 3), (1, 2, 3)) self.assertEqual(unpack("RGB", "RGB;L", 3), (1, 2, 3)) self.assertEqual(unpack("RGB", "RGB;R", 3), (128, 64, 192)) self.assertEqual(unpack("RGB", "RGB;16B", 6), (1, 3, 5)) # ? self.assertEqual(unpack("RGB", "BGR", 3), (3, 2, 1)) self.assertEqual(unpack("RGB", "RGB;15", 2), (8, 131, 0)) self.assertEqual(unpack("RGB", "BGR;15", 2), (0, 131, 8)) self.assertEqual(unpack("RGB", "RGB;16", 2), (8, 64, 0)) self.assertEqual(unpack("RGB", "BGR;16", 2), (0, 64, 8)) self.assertEqual(unpack("RGB", "RGB;4B", 2), (17, 0, 34)) self.assertEqual(unpack("RGB", "RGBX", 4), (1, 2, 3)) self.assertEqual(unpack("RGB", "BGRX", 4), (3, 2, 1)) self.assertEqual(unpack("RGB", "XRGB", 4), (2, 3, 4)) self.assertEqual(unpack("RGB", "XBGR", 4), (4, 3, 2)) self.assertEqual(unpack("RGBA", "RGBA", 4), (1, 2, 3, 4)) self.assertEqual(unpack("RGBA", "BGRA", 4), (3, 2, 1, 4)) self.assertEqual(unpack("RGBA", "ARGB", 4), (2, 3, 4, 1)) self.assertEqual(unpack("RGBA", "ABGR", 4), (4, 3, 2, 1)) self.assertEqual(unpack("RGBA", "RGBA;15", 2), (8, 131, 0, 0)) self.assertEqual(unpack("RGBA", "BGRA;15", 2), (0, 131, 8, 0)) self.assertEqual(unpack("RGBA", "RGBA;4B", 2), (17, 0, 34, 0)) self.assertEqual(unpack("RGBa", "RGBa", 4), (1, 2, 3, 4)) self.assertEqual(unpack("RGBa", "BGRa", 4), (3, 2, 1, 4)) self.assertEqual(unpack("RGBa", "aRGB", 4), (2, 3, 4, 1)) self.assertEqual(unpack("RGBa", "aBGR", 4), (4, 3, 2, 1)) self.assertEqual(unpack("RGBX", "RGBX", 4), (1, 2, 3, 4)) # 4->255? self.assertEqual(unpack("RGBX", "BGRX", 4), (3, 2, 1, 255)) self.assertEqual(unpack("RGBX", "XRGB", 4), (2, 3, 4, 255)) self.assertEqual(unpack("RGBX", "XBGR", 4), (4, 3, 2, 255)) self.assertEqual(unpack("RGBX", "RGB;15", 2), (8, 131, 0, 255)) self.assertEqual(unpack("RGBX", "BGR;15", 2), (0, 131, 8, 255)) self.assertEqual(unpack("RGBX", "RGB;4B", 2), (17, 0, 34, 255)) self.assertEqual(unpack("CMYK", "CMYK", 4), (1, 2, 3, 4)) self.assertEqual(unpack("CMYK", "CMYK;I", 4), (254, 253, 252, 251)) self.assertRaises(ValueError, lambda: unpack("L", "L", 0)) self.assertRaises(ValueError, lambda: unpack("RGB", "RGB", 2)) self.assertRaises(ValueError, lambda: unpack("CMYK", "CMYK", 2)) if __name__ == '__main__': unittest.main() # End of file