test_example

testExample

    unordered_map<string,string> expected_results_y {
        {"BFS","BFS visiting {A,B,E,C,D,}"},
        {"DFS","DFS visiting {A,E,B,C,D,}"},
        {"Topsort", "Topsort visiting {A,E,B,C,D,}"},
        {"Dijkstra", "Dijkstra visiting {A,E,D,}"},
        {"Bellman", "Bellman visiting {(E:A),(D:E),(C:B),(B:A),(A:-),}"}
    };
    graph_tests(y,'A','D', none, expected_results_y);