public void IndexedGraphTest()
{
IndexedGraph g = new IndexedGraph();
int a = g.AddNode();
int b = g.AddNode();
int c = g.AddNode();
int ab = g.AddEdge(a, b);
int bb = g.AddEdge(b, b); // self loop
int bc = g.AddEdge(b, c);
int bc2 = g.AddEdge(b, c); // double edge
Assert.Equal(c, g.TargetOf(bc));
Assert.Equal(bb, g.GetEdge(b, b));
Assert.Equal(0, g.EdgeCount(a, c));
Assert.Equal(2, g.EdgeCount(b, c));
Assert.Equal(4, g.EdgeCount());
Assert.Equal(1, g.NeighborCount(a));
Assert.Equal(2, g.NeighborCount(c));
Assert.Equal(1, g.TargetCount(a));
Assert.Equal(0, g.SourceCount(a));
Console.Write("EdgesOf(b):");
foreach (int edge in g.EdgesOf(b))
{
Console.Write(" {0}", edge);
}
Console.WriteLine();
Console.Write("EdgesInto(b):");
foreach (int edge in g.EdgesInto(b))
{
Console.Write(" {0}", edge);
}
Console.WriteLine();
Console.Write("EdgesOutOf(b):");
foreach (int edge in g.EdgesOutOf(b))
{
Console.Write(" {0}", edge);
}
Console.WriteLine();
Console.Write("EdgesLinking(b,c):");
foreach (int edge in g.EdgesLinking(b, c))
{
Console.Write(" {0}", edge);
}
Console.WriteLine();
}