public void AddTest() { UndirectedGraph <string> graph = new UndirectedGraph <string>(); graph.AddNode(new GraphNode <string>("node1")); graph.AddNode(new GraphNode <string>("node2")); graph.AddNode(new GraphNode <string>("node3")); graph.AddNode(new GraphNode <string>("node4")); graph.AddNode(new GraphNode <string>("node5")); Assert.IsTrue(graph.Contains("node4")); Assert.AreEqual(5, graph.Size); Assert.IsFalse(graph.Contains("dylan")); }