private AmortizedGraph <Char> MockAmortizedGraph()
{
var graph = new AmortizedGraph <Char>();
var a = new CharAmortizedNode('A');
var b = new CharAmortizedNode('B');
var c = new CharAmortizedNode('C');
var d = new CharAmortizedNode('D');
var e = new CharAmortizedNode('E');
var g = new CharAmortizedNode('G');
graph.AddNode(a);
graph.AddNode(b);
graph.AddNode(c);
graph.AddNode(d);
graph.AddNode(e);
graph.AddNode(g);
graph.AddUndirectedEdge(a, b, 20);
graph.AddUndirectedEdge(a, e, 18);
graph.AddUndirectedEdge(b, c, 10);
graph.AddUndirectedEdge(b, d, 21);
graph.AddUndirectedEdge(c, d, 15);
graph.AddUndirectedEdge(c, e, 30);
graph.AddUndirectedEdge(d, e, 17);
return(graph);
}
public void TestContractingEdges()
{
var graph = new AmortizedGraph <Char>((oldEdge, newEdge) => oldEdge > newEdge);
var a = new CharAmortizedNode('A');
var b = new CharAmortizedNode('B');
graph.AddNode(a);
graph.AddNode(b);
graph.AddUndirectedEdge(a, b, 10);
Assert.AreEqual(10, a.Cost(b));
graph.UpdateUndirectedEdge(a, b, 20);
Assert.AreEqual(10, a.Cost(b));
graph.UpdateUndirectedEdge(a, b, 6);
Assert.AreEqual(8, a.Cost(b));
}
public void TestEveryEdge()
{
var graph = new AmortizedGraph <Char>((oldEdge, newEdge) => true);
var a = new CharAmortizedNode('A');
var b = new CharAmortizedNode('B');
graph.AddNode(a);
graph.AddNode(b);
graph.AddUndirectedEdge(a, b, 10);
Assert.AreEqual(10, a.Cost(b));
graph.UpdateUndirectedEdge(a, b, 20);
Assert.AreEqual(15, a.Cost(b));
graph.UpdateUndirectedEdge(a, b, 6);
Assert.AreEqual(12, a.Cost(b));
}