public void Test1()
{
var a = Create('A');
var b = Create('B');
var c = Create('C');
var d = Create('D');
var e = Create('E');
var f = Create('F');
var g = Create('G');
var h = Create('H');
a.Add(c);
b.Add(c);
b.Add(d);
c.Add(e);
d.Add(f);
e.Add(h);
e.Add(f);
f.Add(g);
var graph = new Graph <char>();
graph.Add(e);
graph.Add(b);
graph.Add(a);
graph.Add(c);
graph.Add(d);
graph.Add(f);
graph.Add(g);
var expected = new Stack <char>();
expected.Push('H');
expected.Push('G');
expected.Push('F');
expected.Push('E');
expected.Push('C');
expected.Push('D');
expected.Push('B');
expected.Push('A');
var sut = new TopologicalSort();
var result = sut.Sort(graph);
var areEqual = Collections.CompareStacks(result, expected);
Assert.That(areEqual, Is.True);
}