def test_alpha():
w, h = 100, 50
device = emulator(width=w,
height=h,
rotate=3,
mode='RGB',
transform='none',
scale=6)
im = Image.new('RGB', (w, h), (255, 0, 0))
dr = ImageDraw.Draw(im)
dr.ellipse((w / 2, h / 2, 10, 10), fill='black', outline='blue')
surf = device.to_surface(im, alpha=0.5)
assert isinstance(surf, pygame.Surface)
def test_pygame_missing():
with patch.dict('sys.modules', {'pygame': None}):
with pytest.raises(RuntimeError) as ex:
emulator(1, 2, 3, 4, 5, 6)
assert str(ex.value) == 'Emulator requires pygame to be installed'
def test_show():
device = emulator(1, 2, 3, 'RGB', 'none', 6)
device.show()
assert device._contrast == 1.0
def test_hide():
device = emulator(1, 2, 3, 'RGB', 'none', 6)
device.hide()
assert device._contrast == 0.0
def test_cleanup():
device = emulator(1, 2, 3, 'RGB', 'none', 6)
device.cleanup()