public void NodeDoesNotFindNonExistantChild()
{
Node parentNode = new Node('*', 0);
Node childNodeA = new Node('a', 1);
Node childNodeB = new Node('b', 1);
Node childNodeC = new Node('c', 1);
parentNode.Children.Add(childNodeA);
parentNode.Children.Add(childNodeB);
parentNode.Children.Add(childNodeC);
var foundNode = parentNode.FindChildNode('d');
Assert.IsNull(foundNode);
}