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 Ctor()
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
var nodeA = new BasicNode(net);
var nodeB = new BasicNode(net);
var edge= new BasicEdge(net, nodeA, nodeB);
Assert.NotNull(edge);
Assert.NotNull(edge.Network);
Assert.NotNull(edge.SourceNode);
Assert.NotNull(edge.DestinationNode);
Assert.Same(net, edge.Network);
Assert.Same(nodeA, edge.SourceNode);
Assert.Same(nodeB, edge.DestinationNode);
}
public IEdge CreateEdge(INode source, INode destination)
{
IBasicEdge edge = new BasicEdge(this, source, destination, NextAvailableEdgeIndex++);
((IBasicNode)source).AddEdge(edge);
((IBasicNode)destination).AddEdge(edge);
_edges.Add(edge);
if (EdgeData != null)
EdgeData.AddRow(edge);
if(ChangeEventsEnabled)
{
var arg = new NetworkChangedEventArgs();
arg.EdgeAdded = edge;
OnNetworkChanged(arg);
}
return edge;
}
public void DestinationNode()
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
var nodeA = new BasicNode(net);
var nodeB = new BasicNode(net);
BasicNode nodeC = new BasicNode(net);
var edge= new BasicEdge(net, nodeA, nodeB);
//Act
edge.DestinationNode = nodeC;
//Assert
Assert.NotNull(edge.DestinationNode);
Assert.Same(nodeC, edge.DestinationNode);
}
public void SourceNode_Throws_Ex_When_Null_Is_Assigned()
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
var nodeA = new BasicNode(net);
var nodeB = new BasicNode(net);
BasicNode nodeC = new BasicNode(net);
var edge= new BasicEdge(net, nodeA, nodeB);
//Act, Assert
var ex = Assert.Throws<ArgumentNullException>(() => edge.SourceNode = null);
}
public void SourceNode_Throws_Ex_When_Invalid_Node_Type_Passed_In()
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
var nodeA = new BasicNode(net);
var nodeB = new BasicNode(net);
BasicNode nodeC = new BasicNode(net);
var edge= new BasicEdge(net, nodeA, nodeB);
//Act, Assert
var ex = Assert.Throws<ArgumentException>(() => edge.SourceNode = new DummyBasicNode());
}
public void Network_With_Null_Passed_In()
{
var edge= new BasicEdge();
var ex = Assert.Throws<ArgumentNullException>(() => edge.Network = null);
}
public void Network_With_Invalid_Node_Type_Passed_In()
{
var edge= new BasicEdge();
var ex = Assert.Throws<ArgumentException>(() => edge.Network = new DummyBasicAdjList(Guid.NewGuid()));
}
public void Network()
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
var edge= new BasicEdge();
edge.Network = net;
Assert.NotNull(edge.Network);
Assert.Same(net, edge.Network);
}
public void Detatch_DetachtesEdgeFromAll()
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
var nodeA = new BasicNode(net);
var nodeB = new BasicNode(net);
var edge= new BasicEdge(net, nodeA, nodeB);
Assert.NotNull(edge.Network);
Assert.NotNull(edge.SourceNode);
Assert.NotNull(edge.DestinationNode);
edge.Detatch();
Assert.Null(edge.Network);
Assert.Null(edge.SourceNode);
Assert.Null(edge.DestinationNode);
}
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);
}
