def __init__(self, x: int, y: int, startLength: int):
self.__snake = DoubleLinkedList()
pixel = _Pixel(x, y, 's')
for i in range(startLength):
self.__snake.addBack(pixel)
pixel = pixel.right()
self.__direction = _Direction(random.randint(0, 2))
self.__grow = False
def test_pixel_right_down():
pixel = _Pixel(5, 5, '.')
right_down = pixel.right_down()
assert pixel.x() == right_down.x() - 1
assert pixel.y() == right_down.y() - 1
assert pixel.representation() == right_down.representation()
def test_pixel_right_up():
pixel = _Pixel(5, 5, '.')
right_up = pixel.right_up()
assert pixel.x() == right_up.x() - 1
assert pixel.y() == right_up.y() + 1
assert pixel.representation() == right_up.representation()
def test_pixel_left_down():
pixel = _Pixel(5, 5, '.')
left_down = pixel.left_down()
assert pixel.x() == left_down.x() + 1
assert pixel.y() == left_down.y() - 1
assert pixel.representation() == left_down.representation()
def test_pixel_left_up():
pixel = _Pixel(5, 5, '.')
left_up = pixel.left_up()
assert pixel.x() == left_up.x() + 1
assert pixel.y() == left_up.y() + 1
assert pixel.representation() == left_up.representation()
def test_pixel_right():
pixel = _Pixel(5, 5, '.')
right = pixel.right()
assert pixel.x() == right.x() - 1
assert pixel.y() == right.y()
assert pixel.representation() == right.representation()
def test_pixel_init():
pixel = _Pixel(1, 2, '.')
assert pixel.x() == 1
assert pixel.y() == 2
assert pixel.representation() == '.'