def test_graph_init(self):
graph = Graph([1,2,3,4], name='graph', weight=1)
self.assertEqual('graph', graph['name'])
self.assertEqual(1, graph['weight'])
self.assertEqual([1,2,3,4], graph.get_nodes())
graph = Graph(name='graph')
self.assertEqual('graph', graph['name'])
self.assertNotEqual(1, graph['weight'])
self.assertEqual([], graph.get_nodes())
