public void AssertCanSearch()
{
IGraph graph = new GraphAdjMatrix(new[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 });
graph.AddEdge(0, 1);
graph.AddEdge(1, 2);
graph.AddEdge(2, 3);
graph.AddEdge(3, 4);
graph.AddEdge(4, 5);
graph.AddEdge(5, 6);
graph.AddEdge(5, 8);
graph.AddEdge(6, 7);
graph.AddEdge(7, 8);
graph.AddEdge(8, 5);
graph.AddEdge(0, 9);
graph.AddEdge(9, 10);
graph.AddEdge(10, 11);
graph.AddEdge(11, 12);
var dfs = new DepthFirstSearch(graph);
var result = dfs.CanFind(0, 12);
Assert.IsTrue(result);
var direction = dfs.PathToGoal();
Assert.AreEqual(12, direction[4]);
Assert.AreEqual(11, direction[3]);
Assert.AreEqual(10, direction[2]);
Assert.AreEqual(9, direction[1]);
Assert.AreEqual(0, direction[0]);
}
public void AssertCanNotSearch()
{
IGraph graph = new GraphAdjMatrix(new[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 });
graph.AddEdge(0, 1);
graph.AddEdge(1, 2);
graph.AddEdge(2, 3);
graph.AddEdge(3, 4);
graph.AddEdge(4, 5);
graph.AddEdge(5, 6);
graph.AddEdge(5, 8);
graph.AddEdge(6, 7);
graph.AddEdge(7, 8);
graph.AddEdge(8, 5);
graph.AddEdge(0, 9);
graph.AddEdge(9, 10);
graph.AddEdge(10, 11);
var dfs = new DepthFirstSearch(graph);
var result = dfs.CanFind(0, 12);
Assert.IsFalse(result);
}