def test_weighted_modify_weight():
graph = Graph()
nodes = [["a","b",1],["b","c",2],["a","c",3]]
graph.make_weighted_from_list(nodes)
graph.modify_weight(["a","b",1], 78)
test_graph = {
Node("a"):[Edge("a", "b",78), Edge("a","c",3)],
Node("b"):[Edge("b","c",2)],
Node("c"):[]
}
assert compare_graphs(test_graph, graph.graph) == True
