public void ToString_must_values_separate_by_a_dash()
{
var root = new BinaryTreeSpec(1);
var left = new BinaryTreeSpec(2);
var right = new BinaryTreeSpec(3);
root.SetLeft(left);
root.SetRigth(right);
Assert.AreEqual(root.ToString(), "1 - 2 - 3");
}
public void ToString_with_the_root_must_return_only_the_value()
{
var root = new BinaryTreeSpec(1);
Assert.AreEqual(root.ToString(), "1");
}