public void AcceptVisitorExample()
{
BinarySearchTreeBase<string, int> tree = new BinarySearchTree<string, int>
{
{"cat", 1},
{"dog", 2},
{"canary", 3}
};
// There should be 3 items in the tree.
Assert.AreEqual(3, tree.Count);
// Create a visitor that will simply count the items in the tree.
var visitor =
new CountingVisitor<KeyValuePair<string, int>>();
// Make the tree call IVisitor<T>.Visit on all items contained.
tree.AcceptVisitor(visitor);
// The counting visitor would have visited 3 items.
Assert.AreEqual(3, visitor.Count);
}
public void AcceptVisitorExample()
{
BinarySearchTreeBase <string, int> tree = new BinarySearchTree <string, int>
{
{ "cat", 1 },
{ "dog", 2 },
{ "canary", 3 }
};
// There should be 3 items in the tree.
Assert.AreEqual(3, tree.Count);
// Create a visitor that will simply count the items in the tree.
var visitor =
new CountingVisitor <KeyValuePair <string, int> >();
// Make the tree call IVisitor<T>.Visit on all items contained.
tree.AcceptVisitor(visitor);
// The counting visitor would have visited 3 items.
Assert.AreEqual(3, visitor.Count);
}
public void ExceptionNullVisitor()
{
var tree = new BinarySearchTree <int, string>();
tree.AcceptVisitor(null);
}
public void ExceptionNullVisitor()
{
var tree = new BinarySearchTree<int, string>();
tree.AcceptVisitor(null);
}
public void ExceptionNullVisitor()
{
var tree = new BinarySearchTree <int, string>();
Assert.Throws <ArgumentNullException>(() => tree.AcceptVisitor(null));
}