public void TestRemoveVertexRemovesAssociatedEdges()
{
testGraph.RemoveVertex("a");
Assert.IsFalse(testGraph.ContainsEdge(new E("a", "d")));
// Make sure edges going to "a" are also gone
Assert.IsFalse(testGraph.ContainsEdge(new E("c", "a")));
}
public void TestAddingEdge()
{
var reason = "graph should contain edge a->b";
var a_b = new E("a", "b");
testGraph.AddVertex("a");
testGraph.AddVertex("b");
testGraph.AddDirectedEdge(a_b);
Assert.IsTrue(testGraph.ContainsEdge(a_b), reason);
}