public void ValidateBreadthFirstForEachSingleRoot()
{
var rootTreeNode = new TreeNode(1,
new List<TreeNode>()
{
new TreeNode(2,
new List<TreeNode>()
{
new TreeNode(5),
new TreeNode(6),
new TreeNode(7)
}),
new TreeNode(3,
new List<TreeNode>()
{
new TreeNode(8),
new TreeNode(9),
new TreeNode(10)
}),
new TreeNode(4,
new List<TreeNode>()
{
new TreeNode(11),
new TreeNode(12),
new TreeNode(13)
}),
});
var results = new List<int>();
rootTreeNode.ForEach(TraversalType.BreadthFirst, i => i.ChildItems, i => results.Add(i.Index));
CollectionAssert.AreEqual(Enumerable.Range(1, 13), results);
}
