public void EdgesComparerTests()
{
var v11 = new Vertex("A");
var v21 = new Vertex("B");
var v12 = new Vertex("A");
var v22 = new Vertex("B");
var dirEdge1 = new DirectedEdge(v11, v21);
var dirEdge2 = new DirectedEdge(v12, v22);
var dirEdge3 = new DirectedEdge(v11, v22);
var dirEdge4 = new DirectedEdge(v21, v11);
var dirEdge5 = new DirectedEdge(v11, v11);
var undirEdge1 = new UndirectedEdge(v11, v21);
var undirEdge2 = new UndirectedEdge(v12, v22);
var undirEdge3 = new UndirectedEdge(v11, v22);
var undirEdge4 = new UndirectedEdge(v21, v11);
var undirEdge5 = new UndirectedEdge(v11, v11);
Assert.IsTrue(dirEdge1.Equals(dirEdge2));
Assert.IsTrue(dirEdge1.Equals(dirEdge3));
Assert.IsTrue(undirEdge1.Equals(undirEdge2));
Assert.IsTrue(undirEdge1.Equals(undirEdge3));
Assert.IsFalse(dirEdge1.Equals(undirEdge1));
Assert.IsFalse(dirEdge1.Equals(dirEdge4));
Assert.IsTrue(undirEdge1.Equals(undirEdge4));
Assert.IsFalse(dirEdge1.Equals(dirEdge5));
Assert.IsFalse(undirEdge1.Equals(undirEdge5));
}
