public void Should_have_shortest_path_of_neg_4()
{
var calc = new ApSpBellmanFordAllVertices(_graph);
var result = calc.Execute();
result.ShouldEqual(-4);
}
public void Should_have_a_neg_cost_cycle()
{
var calc = new ApSpBellmanFordAllVertices(_graph);
var result = calc.Execute();
result.ShouldEqual(int.MinValue);
}