public void AddEdge_Throws_Ex_If_Edge_Is_Null()
{
var net =new BasicAdjList(Guid.NewGuid());
BasicNode node0 = new BasicNode(net);
BasicEdge edge0 = null;
var ex = Assert.Throws<ArgumentNullException>(() => node0.AddEdge(edge0));
}
public void AddEdge_Throws_Ex_If_Edge_Is_Invalid_Type()
{
var net =new BasicAdjList(Guid.NewGuid());
BasicNode node0 = new BasicNode(net);
DummyBasicEdge edge0 = new DummyBasicEdge();
var ex = Assert.Throws<ArgumentException>(() => node0.AddEdge(edge0));
}
public void AddEdge_IncrementsDegree_ForSelfLoop()
{
var net =new BasicAdjList(Guid.NewGuid());
BasicNode node0 = new BasicNode(net);
BasicNode node1 = new BasicNode(net);
BasicEdge edge0 = new BasicEdge(net, node0, node0);
int degree = node0.Degree;
Assert.Equal(0, degree);
node0.AddEdge(edge0);
degree = node0.Degree;
Assert.Equal(2, degree);
}
public void RemoveEdge_DecrementsDegree()
{
var net =new BasicAdjList(Guid.NewGuid());
BasicNode node0 = new BasicNode(net);
BasicNode node1 = new BasicNode(net);
BasicEdge edge0 = new BasicEdge(net, node0, node1);
node0.AddEdge(edge0);
Assert.Equal(1, node0.Degree);
node0.RemoveEdge(edge0);
Assert.Equal(0, node0.Degree);
}