def test_get_dist_matrix(self):
     g = Graph()
     g.add_node("new")
     g.add_node("node")
     g.add_node("test")
     g.add_edge("new", "node")
     g.add_edge("node", "test", 45)
     mat = g.get_dist_matrix()
     self.assertEqual(
         mat, {
             "new": {
                 "new": 999999,
                 "node": 999998,
                 "test": 999999
             },
             "node": {
                 "new": 999999,
                 "node": 999999,
                 "test": 45
             },
             "test": {
                 "new": 999999,
                 "node": 999999,
                 "test": 999999
             }
         })
 def test_get_dist_matrix_empty_graph(self):
     g = Graph()
     mat = g.get_dist_matrix()
     self.assertEqual(mat, {})