public void CreateTree()
{
var bar0 = new Bar(1, null);
var bar1 = new Bar(2, null);
var bar0_0 = new Bar(3, 1);
var bar0_1 = new Bar(4, 1);
var bar_0_0_0 = new Bar(5, 3);
var list = new List <Bar>()
{
bar0,
bar1,
bar0_0,
bar0_1,
bar_0_0_0
};
//Create the tree
var tree = TreeExtensions.CreateTree(list.Where(b => b.ParentId == null),
list,
(p, c) => c.ParentId != null && c.ParentId.Value == p.Id);
Assert.Same(bar0, tree.Nodes[0].Item);
Assert.Same(bar1, tree.Nodes[1].Item);
Assert.Same(bar0_1, tree.Nodes[0].Nodes[1].Item);
}
