public void Can_Get_String_From_1()
{
var tree = new BinaryTree();
tree.Add(7);
var expected = "7";
var actual = tree.ToString();
Assert.AreEqual(expected, actual);
}
public void Can_Get_String_From_Many()
{
int[] array = { 9, 5, 1, 14, 6 };
var tree = new BinaryTree();
tree.Init(array);
var expected = "1 5 6 9 14";
var actual = tree.ToString();
Assert.AreEqual(expected, actual);
}
public void Can_Get_String_From_0()
{
var tree = new BinaryTree();
Assert.Throws<ArgumentNullException>(() => tree.ToString());
}