def test_get_unit_at_position_returns_None_if_there_is_no_unit_near_the_given_point(self):  # noqa
		tmap = TileMap(TileGrid(Size(10, 10)))
		serf = Peasant()
		tmap.place_unit(serf, Point(100, 100))
		self.assertIsNone(tmap.get_unit_at_position(Point(50, 50)))
	def test_get_unit_at_position_finds_a_unit_near_to_the_given_point(self):
		tmap = TileMap(TileGrid(Size(10, 10)))
		serf = Peasant()
		tmap.place_unit(serf, Point(100, 100))
		self.assertIs(serf, tmap.get_unit_at_position(Point(95, 95)))