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Tests. First part

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Alexander 2018-03-26 19:30:00 +03:00
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Tests/test_color_lut.py Normal file
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from __future__ import division
from helper import unittest, PillowTestCase
import time
from PIL import Image
class TestColorLut3DCoreAPI(PillowTestCase):
def generate_unit_table(self, channels, size):
if isinstance(size, tuple):
size1D, size2D, size3D = size
else:
size1D, size2D, size3D = (size, size, size)
table = [
[
r / float(size1D-1) if size1D != 1 else 0,
g / float(size2D-1) if size2D != 1 else 0,
b / float(size3D-1) if size3D != 1 else 0,
r / float(size1D-1) if size1D != 1 else 0,
g / float(size2D-1) if size2D != 1 else 0,
b / float(size3D-1) if size3D != 1 else 0,
][:channels]
for b in range(size3D)
for g in range(size2D)
for r in range(size1D)
]
return (
channels, size1D, size2D, size3D,
[item for sublist in table for item in sublist])
def test_wrong_arguments(self):
im = Image.new('RGB', (10, 10), 0)
with self.assertRaisesRegexp(ValueError, "filter"):
im.im.color_lut_3d('RGB', Image.CUBIC,
*self.generate_unit_table(3, 3))
with self.assertRaisesRegexp(ValueError, "image mode"):
im.im.color_lut_3d('wrong', Image.LINEAR,
*self.generate_unit_table(3, 3))
with self.assertRaisesRegexp(ValueError, "table_channels"):
im.im.color_lut_3d('RGB', Image.LINEAR,
*self.generate_unit_table(6, 3))
with self.assertRaisesRegexp(ValueError, "table_channels"):
im.im.color_lut_3d('RGB', Image.LINEAR,
*self.generate_unit_table(1, 3))
with self.assertRaisesRegexp(ValueError, "table_channels"):
im.im.color_lut_3d('RGB', Image.LINEAR,
*self.generate_unit_table(2, 3))
with self.assertRaisesRegexp(ValueError, "Table size"):
im.im.color_lut_3d('RGB', Image.LINEAR,
*self.generate_unit_table(3, (1, 3, 3)))
with self.assertRaisesRegexp(ValueError, "Table size"):
im.im.color_lut_3d('RGB', Image.LINEAR,
*self.generate_unit_table(3, (66, 3, 3)))
def test_correct_arguments(self):
im = Image.new('RGB', (10, 10), 0)
im.im.color_lut_3d('RGB', Image.LINEAR,
*self.generate_unit_table(3, 3))
im.im.color_lut_3d('CMYK', Image.LINEAR,
*self.generate_unit_table(4, 3))
im.im.color_lut_3d('RGB', Image.LINEAR,
*self.generate_unit_table(3, (2, 3, 3)))
im.im.color_lut_3d('RGB', Image.LINEAR,
*self.generate_unit_table(3, (65, 3, 3)))
im.im.color_lut_3d('RGB', Image.LINEAR,
*self.generate_unit_table(3, (3, 65, 3)))
im.im.color_lut_3d('RGB', Image.LINEAR,
*self.generate_unit_table(3, (3, 3, 65)))
def test_wrong_mode(self):
with self.assertRaisesRegexp(ValueError, "wrong mode"):
im = Image.new('L', (10, 10), 0)
im.im.color_lut_3d('RGB', Image.LINEAR,
*self.generate_unit_table(3, 3))
with self.assertRaisesRegexp(ValueError, "wrong mode"):
im = Image.new('RGB', (10, 10), 0)
im.im.color_lut_3d('L', Image.LINEAR,
*self.generate_unit_table(3, 3))
with self.assertRaisesRegexp(ValueError, "wrong mode"):
im = Image.new('L', (10, 10), 0)
im.im.color_lut_3d('L', Image.LINEAR,
*self.generate_unit_table(3, 3))
with self.assertRaisesRegexp(ValueError, "wrong mode"):
im = Image.new('RGB', (10, 10), 0)
im.im.color_lut_3d('RGBA', Image.LINEAR,
*self.generate_unit_table(3, 3))
with self.assertRaisesRegexp(ValueError, "wrong mode"):
im = Image.new('RGB', (10, 10), 0)
im.im.color_lut_3d('RGB', Image.LINEAR,
*self.generate_unit_table(4, 3))
def test_correct_mode(self):
im = Image.new('RGBA', (10, 10), 0)
im.im.color_lut_3d('RGBA', Image.LINEAR,
*self.generate_unit_table(3, 3))
im = Image.new('RGBA', (10, 10), 0)
im.im.color_lut_3d('RGBA', Image.LINEAR,
*self.generate_unit_table(4, 3))
im = Image.new('RGB', (10, 10), 0)
im.im.color_lut_3d('HSV', Image.LINEAR,
*self.generate_unit_table(3, 3))
im = Image.new('RGB', (10, 10), 0)
im.im.color_lut_3d('RGBA', Image.LINEAR,
*self.generate_unit_table(4, 3))
if __name__ == '__main__':
unittest.main()