public void RecursiveTest()
{
var testTree = new TestTree("Parent");
var child1 = new TestTree("Child_1");
child1.Children.AddRange(new[]
{
new TestTree("Child_1-a"),
new TestTree("Child_1-b"),
});
var child2 = new TestTree("Child_2");
child2.Children.AddRange(new[]
{
new TestTree("Child_2-a"),
new TestTree("Child_2-b"),
new TestTree("Child_2-c"),
});
var child3 = new TestTree("Child_3");
child3.Children.AddRange(new[]
{
new TestTree("Child_3-a"),
new TestTree("Child_3-b"),
});
var child3c = new TestTree("Child_3-c");
child3c.Children.AddRange(new[]
{
new TestTree("Child_3-c-1"),
new TestTree("Child_3-c-2"),
new TestTree("Child_3-c-3"),
});
child3.Children.Add(child3c);
child3.Children.Add(new TestTree("Child_3-d"));
testTree.Children.Add(child1);
testTree.Children.Add(child2);
testTree.Children.Add(child3);
var actual = testTree
.Recursive(each => each.Children)
.Select(tree => tree.Value);
var expected = new[]
{
"Child_1", "Child_2", "Child_3",
"Child_1-a", "Child_1-b", "Child_2-a", "Child_2-b", "Child_2-c", "Child_3-a", "Child_3-b", "Child_3-c", "Child_3-d",
"Child_3-c-1", "Child_3-c-2", "Child_3-c-3",
};
Assert.IsTrue(actual.SequenceEqual(expected));
}