def test_player_doesnt_rotate_over_90_degrees():
player = Player()
player.rotation = (85, 0)
player.rotate(10)
assert (5, 0) == player.rotation
def test_player_rotates():
player = Player()
rot_before = player.rotation[0]
player.rotate(90)
rot_after = player.rotation[0]
assert rot_after == rot_before + 90