mirror of
https://github.com/python-pillow/Pillow.git
synced 2024-09-21 11:28:58 +03:00
7da17ad41e
The previous test configuration made it difficult to run a single test with the pytest CLI. There were two major issues: - The Tests directory was not a package. It now includes a __init__.py file and imports from other tests modules are done with relative imports. - setup.cfg always specified the Tests directory. So even if a specific test were specified as a CLI arg, this configuration would also always include all tests. This configuration has been removed to allow specifying a single test on the command line. Contributors can now run specific tests with a single command such as: $ tox -e py37 -- Tests/test_file_pdf.py::TestFilePdf.test_rgb This makes it easy and faster to iterate on a single test failure and is very familiar to those that have previously used tox and pytest. When running tox or pytest with no arguments, they still discover and runs all tests in the Tests directory.
380 lines
11 KiB
Python
380 lines
11 KiB
Python
from .helper import unittest, PillowTestCase, hopper
|
|
|
|
from PIL import Image
|
|
from PIL import ImageChops
|
|
|
|
BLACK = (0, 0, 0)
|
|
BROWN = (127, 64, 0)
|
|
CYAN = (0, 255, 255)
|
|
DARK_GREEN = (0, 128, 0)
|
|
GREEN = (0, 255, 0)
|
|
ORANGE = (255, 128, 0)
|
|
WHITE = (255, 255, 255)
|
|
|
|
GREY = 128
|
|
|
|
|
|
class TestImageChops(PillowTestCase):
|
|
|
|
def test_sanity(self):
|
|
|
|
im = hopper("L")
|
|
|
|
ImageChops.constant(im, 128)
|
|
ImageChops.duplicate(im)
|
|
ImageChops.invert(im)
|
|
ImageChops.lighter(im, im)
|
|
ImageChops.darker(im, im)
|
|
ImageChops.difference(im, im)
|
|
ImageChops.multiply(im, im)
|
|
ImageChops.screen(im, im)
|
|
|
|
ImageChops.add(im, im)
|
|
ImageChops.add(im, im, 2.0)
|
|
ImageChops.add(im, im, 2.0, 128)
|
|
ImageChops.subtract(im, im)
|
|
ImageChops.subtract(im, im, 2.0)
|
|
ImageChops.subtract(im, im, 2.0, 128)
|
|
|
|
ImageChops.add_modulo(im, im)
|
|
ImageChops.subtract_modulo(im, im)
|
|
|
|
ImageChops.blend(im, im, 0.5)
|
|
ImageChops.composite(im, im, im)
|
|
|
|
ImageChops.offset(im, 10)
|
|
ImageChops.offset(im, 10, 20)
|
|
|
|
def test_add(self):
|
|
# Arrange
|
|
im1 = Image.open("Tests/images/imagedraw_ellipse_RGB.png")
|
|
im2 = Image.open("Tests/images/imagedraw_floodfill_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.add(im1, im2)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getbbox(), (25, 25, 76, 76))
|
|
self.assertEqual(new.getpixel((50, 50)), ORANGE)
|
|
|
|
def test_add_scale_offset(self):
|
|
# Arrange
|
|
im1 = Image.open("Tests/images/imagedraw_ellipse_RGB.png")
|
|
im2 = Image.open("Tests/images/imagedraw_floodfill_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.add(im1, im2, scale=2.5, offset=100)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getbbox(), (0, 0, 100, 100))
|
|
self.assertEqual(new.getpixel((50, 50)), (202, 151, 100))
|
|
|
|
def test_add_clip(self):
|
|
# Arrange
|
|
im = hopper()
|
|
|
|
# Act
|
|
new = ImageChops.add(im, im)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getpixel((50, 50)), (255, 255, 254))
|
|
|
|
def test_add_modulo(self):
|
|
# Arrange
|
|
im1 = Image.open("Tests/images/imagedraw_ellipse_RGB.png")
|
|
im2 = Image.open("Tests/images/imagedraw_floodfill_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.add_modulo(im1, im2)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getbbox(), (25, 25, 76, 76))
|
|
self.assertEqual(new.getpixel((50, 50)), ORANGE)
|
|
|
|
def test_add_modulo_no_clip(self):
|
|
# Arrange
|
|
im = hopper()
|
|
|
|
# Act
|
|
new = ImageChops.add_modulo(im, im)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getpixel((50, 50)), (224, 76, 254))
|
|
|
|
def test_blend(self):
|
|
# Arrange
|
|
im1 = Image.open("Tests/images/imagedraw_ellipse_RGB.png")
|
|
im2 = Image.open("Tests/images/imagedraw_floodfill_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.blend(im1, im2, 0.5)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getbbox(), (25, 25, 76, 76))
|
|
self.assertEqual(new.getpixel((50, 50)), BROWN)
|
|
|
|
def test_constant(self):
|
|
# Arrange
|
|
im = Image.new("RGB", (20, 10))
|
|
|
|
# Act
|
|
new = ImageChops.constant(im, GREY)
|
|
|
|
# Assert
|
|
self.assertEqual(new.size, im.size)
|
|
self.assertEqual(new.getpixel((0, 0)), GREY)
|
|
self.assertEqual(new.getpixel((19, 9)), GREY)
|
|
|
|
def test_darker_image(self):
|
|
# Arrange
|
|
im1 = Image.open("Tests/images/imagedraw_chord_RGB.png")
|
|
im2 = Image.open("Tests/images/imagedraw_outline_chord_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.darker(im1, im2)
|
|
|
|
# Assert
|
|
self.assert_image_equal(new, im2)
|
|
|
|
def test_darker_pixel(self):
|
|
# Arrange
|
|
im1 = hopper()
|
|
im2 = Image.open("Tests/images/imagedraw_chord_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.darker(im1, im2)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getpixel((50, 50)), (240, 166, 0))
|
|
|
|
def test_difference(self):
|
|
# Arrange
|
|
im1 = Image.open("Tests/images/imagedraw_arc_end_le_start.png")
|
|
im2 = Image.open("Tests/images/imagedraw_arc_no_loops.png")
|
|
|
|
# Act
|
|
new = ImageChops.difference(im1, im2)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getbbox(), (25, 25, 76, 76))
|
|
|
|
def test_difference_pixel(self):
|
|
# Arrange
|
|
im1 = hopper()
|
|
im2 = Image.open("Tests/images/imagedraw_polygon_kite_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.difference(im1, im2)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getpixel((50, 50)), (240, 166, 128))
|
|
|
|
def test_duplicate(self):
|
|
# Arrange
|
|
im = hopper()
|
|
|
|
# Act
|
|
new = ImageChops.duplicate(im)
|
|
|
|
# Assert
|
|
self.assert_image_equal(new, im)
|
|
|
|
def test_invert(self):
|
|
# Arrange
|
|
im = Image.open("Tests/images/imagedraw_floodfill_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.invert(im)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getbbox(), (0, 0, 100, 100))
|
|
self.assertEqual(new.getpixel((0, 0)), WHITE)
|
|
self.assertEqual(new.getpixel((50, 50)), CYAN)
|
|
|
|
def test_lighter_image(self):
|
|
# Arrange
|
|
im1 = Image.open("Tests/images/imagedraw_chord_RGB.png")
|
|
im2 = Image.open("Tests/images/imagedraw_outline_chord_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.lighter(im1, im2)
|
|
|
|
# Assert
|
|
self.assert_image_equal(new, im1)
|
|
|
|
def test_lighter_pixel(self):
|
|
# Arrange
|
|
im1 = hopper()
|
|
im2 = Image.open("Tests/images/imagedraw_chord_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.lighter(im1, im2)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getpixel((50, 50)), (255, 255, 127))
|
|
|
|
def test_multiply_black(self):
|
|
"""If you multiply an image with a solid black image,
|
|
the result is black."""
|
|
# Arrange
|
|
im1 = hopper()
|
|
black = Image.new("RGB", im1.size, "black")
|
|
|
|
# Act
|
|
new = ImageChops.multiply(im1, black)
|
|
|
|
# Assert
|
|
self.assert_image_equal(new, black)
|
|
|
|
def test_multiply_green(self):
|
|
# Arrange
|
|
im = Image.open("Tests/images/imagedraw_floodfill_RGB.png")
|
|
green = Image.new("RGB", im.size, "green")
|
|
|
|
# Act
|
|
new = ImageChops.multiply(im, green)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getbbox(), (25, 25, 76, 76))
|
|
self.assertEqual(new.getpixel((25, 25)), DARK_GREEN)
|
|
self.assertEqual(new.getpixel((50, 50)), BLACK)
|
|
|
|
def test_multiply_white(self):
|
|
"""If you multiply with a solid white image,
|
|
the image is unaffected."""
|
|
# Arrange
|
|
im1 = hopper()
|
|
white = Image.new("RGB", im1.size, "white")
|
|
|
|
# Act
|
|
new = ImageChops.multiply(im1, white)
|
|
|
|
# Assert
|
|
self.assert_image_equal(new, im1)
|
|
|
|
def test_offset(self):
|
|
# Arrange
|
|
im = Image.open("Tests/images/imagedraw_ellipse_RGB.png")
|
|
xoffset = 45
|
|
yoffset = 20
|
|
|
|
# Act
|
|
new = ImageChops.offset(im, xoffset, yoffset)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getbbox(), (0, 45, 100, 96))
|
|
self.assertEqual(new.getpixel((50, 50)), BLACK)
|
|
self.assertEqual(new.getpixel((50+xoffset, 50+yoffset)), DARK_GREEN)
|
|
|
|
# Test no yoffset
|
|
self.assertEqual(ImageChops.offset(im, xoffset),
|
|
ImageChops.offset(im, xoffset, xoffset))
|
|
|
|
def test_screen(self):
|
|
# Arrange
|
|
im1 = Image.open("Tests/images/imagedraw_ellipse_RGB.png")
|
|
im2 = Image.open("Tests/images/imagedraw_floodfill_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.screen(im1, im2)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getbbox(), (25, 25, 76, 76))
|
|
self.assertEqual(new.getpixel((50, 50)), ORANGE)
|
|
|
|
def test_subtract(self):
|
|
# Arrange
|
|
im1 = Image.open("Tests/images/imagedraw_chord_RGB.png")
|
|
im2 = Image.open("Tests/images/imagedraw_outline_chord_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.subtract(im1, im2)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getbbox(), (25, 50, 76, 76))
|
|
self.assertEqual(new.getpixel((50, 50)), GREEN)
|
|
self.assertEqual(new.getpixel((50, 51)), BLACK)
|
|
|
|
def test_subtract_scale_offset(self):
|
|
# Arrange
|
|
im1 = Image.open("Tests/images/imagedraw_chord_RGB.png")
|
|
im2 = Image.open("Tests/images/imagedraw_outline_chord_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.subtract(im1, im2, scale=2.5, offset=100)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getbbox(), (0, 0, 100, 100))
|
|
self.assertEqual(new.getpixel((50, 50)), (100, 202, 100))
|
|
|
|
def test_subtract_clip(self):
|
|
# Arrange
|
|
im1 = hopper()
|
|
im2 = Image.open("Tests/images/imagedraw_chord_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.subtract(im1, im2)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getpixel((50, 50)), (0, 0, 127))
|
|
|
|
def test_subtract_modulo(self):
|
|
# Arrange
|
|
im1 = Image.open("Tests/images/imagedraw_chord_RGB.png")
|
|
im2 = Image.open("Tests/images/imagedraw_outline_chord_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.subtract_modulo(im1, im2)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getbbox(), (25, 50, 76, 76))
|
|
self.assertEqual(new.getpixel((50, 50)), GREEN)
|
|
self.assertEqual(new.getpixel((50, 51)), BLACK)
|
|
|
|
def test_subtract_modulo_no_clip(self):
|
|
# Arrange
|
|
im1 = hopper()
|
|
im2 = Image.open("Tests/images/imagedraw_chord_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.subtract_modulo(im1, im2)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getpixel((50, 50)), (241, 167, 127))
|
|
|
|
def test_logical(self):
|
|
|
|
def table(op, a, b):
|
|
out = []
|
|
for x in (a, b):
|
|
imx = Image.new("1", (1, 1), x)
|
|
for y in (a, b):
|
|
imy = Image.new("1", (1, 1), y)
|
|
out.append(op(imx, imy).getpixel((0, 0)))
|
|
return tuple(out)
|
|
|
|
self.assertEqual(
|
|
table(ImageChops.logical_and, 0, 1), (0, 0, 0, 255))
|
|
self.assertEqual(
|
|
table(ImageChops.logical_or, 0, 1), (0, 255, 255, 255))
|
|
self.assertEqual(
|
|
table(ImageChops.logical_xor, 0, 1), (0, 255, 255, 0))
|
|
|
|
self.assertEqual(
|
|
table(ImageChops.logical_and, 0, 128), (0, 0, 0, 255))
|
|
self.assertEqual(
|
|
table(ImageChops.logical_or, 0, 128), (0, 255, 255, 255))
|
|
self.assertEqual(
|
|
table(ImageChops.logical_xor, 0, 128), (0, 255, 255, 0))
|
|
|
|
self.assertEqual(
|
|
table(ImageChops.logical_and, 0, 255), (0, 0, 0, 255))
|
|
self.assertEqual(
|
|
table(ImageChops.logical_or, 0, 255), (0, 255, 255, 255))
|
|
self.assertEqual(
|
|
table(ImageChops.logical_xor, 0, 255), (0, 255, 255, 0))
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|