def test_clear_color():
img = Image(100, 200)
# just to put something in there to clear.
img.draw_rectangle((-10, -10), (50, 100), fill_color='red')
img.draw_rectangle((50, 100), (110, 210), fill_color='blue')
img.save(outfile("test_image_clear_before2.png"), "png")
img.clear(color='white')
img.save(outfile("test_image_clear_after2.png"), "png")
assert np.all(np.asarray(img).flat == img.get_color_index('white'))
def test_copy_ul():
"""
test copying parts of an image
"""
img1 = Image(10, 10)
img2 = Image(10, 10)
img1.draw_rectangle((1, 1), (8, 8), fill_color='red')
img2.draw_rectangle((0, 0), (9, 9), fill_color='blue')
img2.copy(img1, (0, 0), (7, 7), (4, 4))
img2.save(outfile("image_copy_upper_left.bmp"))
def test_copy2():
"""
test copying parts of an image
"""
img1 = Image(10, 10)
img2 = Image(10, 10)
img1.draw_rectangle((1, 1), (8, 8), fill_color='red')
img2.draw_rectangle((0, 0), (9, 9), fill_color='blue')
img2.copy(img1, (3, 3), (3, 3), (4, 4))
img1.save(outfile("image_copy_middle1.bmp"))
img2.save(outfile("image_copy_middle2.bmp"))
def test_add_colors():
img = Image(10, 10, preset_colors='BW')
assert img.get_color_names() == ['transparent', 'black', 'white']
img.add_color('light grey', (220, 220, 220))
assert img.get_color_names() == [
'transparent', 'black', 'white', 'light grey'
]
assert img.get_color_index('light grey') == 3
img.draw_rectangle((2, 2), (7, 7), fill_color='light grey')
img.save(outfile('test_image_grey.bmp'))
with pytest.raises(ValueError):
# color doesn't exist
img.draw_rectangle((2, 2), (7, 7), fill_color='red')
def test_rectangles():
img = Image(100, 200)
img.draw_rectangle((10, 10), (30, 40), fill_color='blue')
img.draw_rectangle((20, 50), (40, 70), line_color='blue', line_width=5)
img.draw_rectangle((40, 80), (90, 220),
fill_color='white',
line_color='green',
line_width=2)
img.save(outfile("test_image_rectangle.bmp"))
def test_copy_transparent():
"""
test copying parts of an image that are transparent
"""
img1 = Image(10, 10)
img2 = Image(10, 10)
img1.draw_rectangle((0, 0), (9, 9), fill_color='red')
img1.draw_rectangle((2, 2), (7, 7), fill_color='transparent')
img2.draw_rectangle((0, 0), (9, 9), fill_color='blue')
img2.copy(img1, (0, 0), (7, 7), (4, 4))
img2.save(outfile("image_copy_trans.png"), file_type="png")
def test_equality():
"""
test that an image is equal to itself and an identical image
"""
img1 = Image(10, 10)
img2 = Image(10, 10)
img3 = Image(10, 11)
img1.draw_rectangle((1, 1), (8, 8), fill_color='red')
img2.draw_rectangle((1, 1), (8, 8), fill_color='red')
img3.draw_rectangle((1, 1), (8, 8), fill_color='blue')
assert img1 == img1
assert img1 == img2
assert img1 != img3
assert (img1 == img3) is False