public void CollectionOfAllNodes()
{
var vertices = new[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
var edges = new[] { Tuple.Create(1, 2), Tuple.Create(1, 3),
Tuple.Create(2, 4), Tuple.Create(3, 5), Tuple.Create(3, 6),
Tuple.Create(4, 7), Tuple.Create(5, 7), Tuple.Create(5, 8),
Tuple.Create(5, 6), Tuple.Create(8, 9), Tuple.Create(9, 10) };
Graph <int> graph = new Graph <int>(vertices, edges);
var algorithms = new DepthFirstTraversal();
var dft = algorithms.DFS(graph, 1);
Assert.Equal(dft.Count, graph.AdjacencyList.Count);
}