@Test
	public void getConnectedComponentsTest(){
		VertexSet set = new VertexSet();
		
		set.addVertex(new City(4, 213, 250, Owner.Rom));
		set.addVertex(new City(6, 300, 300, Owner.Rom));
		set.addVertex(new City(5, 387, 250, Owner.Rom));
		
		City testCity = city_graph.getCity(4);
		assertTrue(city_graph.getConnectedComponents(testCity).equals(set));
	}