def test_screen(self):
# Testing the screen - drawing a "crosshair" to test screen edges and lines
c = Canvas(self.o)
c.line((0, 0, 10, 0))
c.line(("-1", 0, "-10", 0))
c.line((0, "-1", 10, "-1"))
c.line(("-1", "-1", "-10", "-1"))
c.line((0, 0, 0, 10))
c.line((0, "-1", 0, "-10"))
c.line(("-1", 10, "-1", 0))
c.line(("-1", "-1", "-1", "-10"))
c.line((0, 0, "-1", "-1"))
c.line((0, "-1", "-1", 0))
eh = ExitHelper(self.i, ["KEY_ENTER", "KEY_LEFT"]).start()
c.display()
sleep(1)
for x in range(30):
if eh.do_run():
if x % 10 == 0:
c.invert()
c.display()
sleep(0.1)
else:
break
# Filling the screen (still using the same ExitHelper)
c = Canvas(self.o)
for x in range(60):
if eh.do_run():
if x % 20 == 0:
c.invert()
c.display()
sleep(0.1)
else:
break
def test_invert_rgb(self):
"""tests that rgb canvas inversion doesn't fail with RGB displays and returns a valid RGB image"""
test_image = get_image("canvas_10.png")
o = get_mock_output(mode="RGB")
c = Canvas(o, name=c_name)
c.text("Hello world", (5, 5))
c.invert()
assert (c.get_image().mode == o.device_mode)
assert (imgs_are_equal(c.get_image(), test_image.convert("RGB")))
def test_invert(self):
"""tests that inversion works with default display"""
test_image = get_image("canvas_10.png")
o = get_mock_output()
c = Canvas(o, name=c_name)
c.text("Hello world", (5, 5))
c.invert()
assert (c.get_image().mode == o.device_mode)
assert (imgs_are_equal(c.get_image(), test_image))