public void TestAPI()
{
var root = new IntNode(42);
Assert.AreEqual(42, root.Content);
Assert.AreEqual(0, root.NeighborsCount);
Assert.IsNull(root.Find(42));
Assert.IsFalse(root.HasNeighbor(root));
var neighbor = new IntNode(21);
root.AddDirectedEdge(neighbor);
Assert.AreEqual(1, root.NeighborsCount);
Assert.IsTrue(root.HasNeighbor(neighbor));
var found = root.Find(21);
Assert.AreSame(found, neighbor);
var neighbors = ">";
root.ForEachNeighbor(node =>
{
neighbors += $" {node.Content.ToString()}";
});
Assert.AreEqual("> 21", neighbors);
root.RemoveDirectedEdge(neighbor);
Assert.AreEqual(0, root.NeighborsCount);
Assert.IsFalse(root.HasNeighbor(neighbor));
Assert.IsNull(root.Find(21));
}
public void TestNeighborByValue()
{
var root = new IntNode(0);
for (int i = 1; i <= 10; i++)
{
var neighbor = new IntNode(i);
root.AddDirectedEdge(neighbor);
Assert.True(root.HasNeighbor(root.Find(i)));
}
}