public void GetClosestSameLevelNodeBelow() { var r = new MapNode(new MapTree(), "r"); var c1 = new MapNode(r, "c1"); var c2 = new MapNode(r, "c2"); var c3 = new MapNode(r, "c3", NodePosition.Left); c3.Folded = true; var c31 = new MapNode(c3, "c31"); var c4 = new MapNode(r, "c4"); var c5 = new MapNode(r, "c5"); var c6 = new MapNode(r, "c6"); var c61 = new MapNode(c6, "c61"); Assert.AreEqual(c61, c31.GetClosestSameLevelNodeBelow()); }