public void should_get_sub_vertexes_for_one()
{
var graph = new DAG <int>();
const int from = 0;
const int to = 1;
graph.Add(from);
graph.AddPath(from, to);
var subOfTo = graph.GetSubOf(to);
Assert.Equal(0, subOfTo.Length);
var subOfFrom = graph.GetSubOf(from);
Assert.Equal(1, subOfFrom.Length);
Assert.Equal(to, subOfFrom[0]);
}
public void should_get_sub_vertexes_for_square()
{
var graph = new DAG <int>();
const int v0 = 0;
const int v1 = 1;
const int v2 = 2;
const int v3 = 3;
graph.AddPath(v0, v1);
graph.AddPath(v0, v2);
graph.AddPath(v1, v3);
graph.AddPath(v2, v3);
var subOf0 = graph.GetSubOf(v0);
Assert.Equal(3, subOf0.Length);
}