def test_init_simple_add_rgba():
"""
simplest possible initilization -- no preset color palette
"""
img = Image(width=400, height=400, preset_colors=None)
img.add_color('white', (255, 255, 255, 127))
def test_add_colors_max():
img = Image(10, 10, preset_colors='BW')
# should be able to add this many:
for i in range(253):
img.add_color("color_%i" % i, (i, i, i))
# adding one more should raise an exception:
with pytest.raises(ValueError):
img.add_color("color_max", (10, 100, 200))
def test_add_colors_repeat():
img = Image(10, 10, preset_colors='BW')
index_1 = img.add_color('blue', (0, 0, 255))
with pytest.raises(ValueError):
# adding one with the same name should raise an exception
img.add_color('blue', (0, 0, 200))
# Adding the same color with a different name:
# adds another index -- should it?
index_2 = img.add_color('full_blue', (0, 0, 255))
assert index_1 != index_2
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')
