public void RemoveEdge_SelfEdge_EdgeCountIsZero()
{
var graph = new DirectedGraphWithoutInEdges <int, int>();
var v = graph.AddVertex(0);
var e = graph.AddEdge(v, v, 0);
graph.RemoveEdge(e);
Assert.That(graph.EdgeCount, Is.Zero);
}
public void RemoveEdge_SecondEdge_OutDegreeIsOne()
{
var graph = new DirectedGraphWithoutInEdges <int, int>();
var v1 = graph.AddVertex(0);
var v2 = graph.AddVertex(0);
graph.AddEdge(v1, v2, 0);
var e = graph.AddEdge(v1, v2, 0);
graph.RemoveEdge(e);
Assert.That(graph.GetOutDegree(v1), Is.EqualTo(1));
}
