private static void TestBFS()
{
Graph g = new Graph();
Vertex v1 = new Vertex();
Vertex v2 = new Vertex();
Vertex v3 = new Vertex();
Vertex v4 = new Vertex();
Vertex v5 = new Vertex();
Vertex v6 = new Vertex();
Vertex v7 = new Vertex();
g.AddVertex(v1);
g.AddVertex(v2);
g.AddVertex(v3);
g.AddVertex(v4);
g.AddVertex(v5);
g.AddVertex(v6);
g.AddVertex(v7);
g.AddEdge(new Edge(v1, v2));
g.AddEdge(new Edge(v1, v3));
g.AddEdge(new Edge(v2, v6));
g.AddEdge(new Edge(v2, v4));
g.AddEdge(new Edge(v6, v4));
g.AddEdge(new Edge(v4, v5));
List <Edge> path = GraphAlgorithms.BreadthFirstSearch(g, 0, 4);
}