public void CopyTo()
{
var tree = new TTree <int>(2, 2);
tree.Add(5);
tree.Add(3);
tree.Add(10);
tree.Add(1);
tree.Add(7);
tree.Add(20);
tree.Add(100);
var items = new int[7];
tree.CopyTo(items, 0);
Assert.AreEqual(1, items[0], "Invalid value at 0");
Assert.AreEqual(3, items[1], "Invalid value at 1");
Assert.AreEqual(5, items[2], "Invalid value at 2");
Assert.AreEqual(7, items[3], "Invalid value at 3");
Assert.AreEqual(10, items[4], "Invalid value at 4");
Assert.AreEqual(20, items[5], "Invalid value at 5");
Assert.AreEqual(100, items[6], "Invalid value at 6");
}