def test_set_neighbor_with_out_of_bounds(self, mock):
t1, t2 = Tile(), OutOfBounds
t1.set_neighbor(t2, Direction.NORTH)
self.assertIs(t1.north, OutOfBounds)
mock.assert_not_called()
def test_set_neighbor_with_none(self, mock):
t1, t2 = Tile(), None
t1.set_neighbor(t2, Direction.NORTH)
self.assertIsNone(t1.north)
mock.assert_not_called()
def test_set_neighbor_with_two_tiles(self, mock):
t1, t2 = Tile(), Tile()
t1.set_neighbor(t2, Direction.NORTH)
self.assertIs(t1.north, t2)
self.assertIs(t2.south, t1)
mock.assert_called_with(Direction.NORTH)