def test_differ_assert_passes():
image1 = LivePillowImage(Image.new('RGBA', (10, 20)))
image2 = LivePillowImage(Image.new('RGBA', (10, 20)))
differ = LiveImageDiffer()
differ.assert_equal(image1, image2)
def test_differ_assert_fails():
blue = (0, 0, 255, 255)
image1 = LivePillowImage(Image.new('RGBA', (10, 20)))
image1.set_pixel((5, 10), blue)
image2 = LivePillowImage(Image.new('RGBA', (10, 20)))
differ = LiveImageDiffer()
with pytest.raises(AssertionError, match=r'Images differ by 1 pixel.'):
differ.assert_equal(image1, image2)
def test_live_png_as_painter(tmp_path):
blue = (0, 0, 255, 255)
white = (255, 255, 255, 255)
image1 = LivePillowImage(Image.new('RGBA', (10, 20)))
image1.set_pixel((5, 10), blue)
image1.set_pixel((6, 10), white)
image2 = LivePillowImage(Image.new('RGBA', (10, 20)))
image2.set_pixel((5, 10), blue)
bytes2 = image2.convert_to_png()
image3 = LivePng(bytes2)
painter3 = image3.convert_to_painter()
painter3.set_pixel((6, 10), white)
differ = LiveImageDiffer(tmp_path)
differ.assert_equal(image1, painter3, 'live_png_as_painter')