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_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_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))