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_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_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)