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Third part of unpack tests

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This commit is contained in:
Alexander 2017-08-23 10:27:13 +03:00
parent 5c2199c97b
commit 29aca0815a
1 changed files with 105 additions and 17 deletions
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122
Tests/test_lib_pack.py
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@ -1,3 +1,5 @@
import sys
from helper import unittest, PillowTestCase, py3
from PIL import Image
@ -60,23 +62,6 @@ class TestLibPack(PillowTestCase):
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))
self.assertRaises(ValueError, lambda: unpack("L", "L", 0))
self.assertRaises(ValueError, lambda: unpack("RGB", "RGB", 2))
self.assertRaises(ValueError, lambda: unpack("CMYK", "CMYK", 2))
class TestLibUnpack(PillowTestCase):
def assert_unpack(self, mode, rawmode, data, *pixels):
@ -265,6 +250,109 @@ class TestLibUnpack(PillowTestCase):
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", 4, 0x04030201, 0x08070605)
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;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;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", 4,
1.539989614439558e-36, 4.063216068939723e-34)
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",
'333333\xc3?\x00\x00\x00\x00\x00J\x93\xc0', # by struct.pack
0.15000000596046448, -1234.5)
self.assert_unpack("F", "F;64BF",
'?\xc3333333\xc0\x93J\x00\x00\x00\x00\x00', # by struct.pack
0.15000000596046448, -1234.5)
if sys.byteorder == 'little':
self.assert_unpack("F", "F;32NF", 4,
1.539989614439558e-36, 4.063216068939723e-34)
self.assert_unpack("F", "F;64NF",
'333333\xc3?\x00\x00\x00\x00\x00J\x93\xc0',
0.15000000596046448, -1234.5)
else:
self.assert_unpack("F", "F;32NF", 4,
2.387939260590663e-38, 6.301941157072183e-36)
self.assert_unpack("F", "F;64NF",
'?\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;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)
self.assert_unpack("I;16", "I;12", 2, 0x0010, 0x0203, 0x0040, 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)
if __name__ == '__main__':
unittest.main()