public void TestEdge()
        {
            Graph myGraph = new Graph();
            myGraph.addVertex("001", 21);
            myGraph.addVertex("002", "string node");
            myGraph.addVertex("003", new Uri("http://github.com"));

            myGraph.addEdge("Edge 1", "001", "003");
            myGraph.addEdge(2, "002", "003");
            myGraph.addEdge(new Random(), "003", "002");

            Assert.AreEqual(true, myGraph.deleteEdge(myGraph.getVertex("001"), myGraph.getVertex("003")));
        }