public void TestToString() { Hierarchy hierarchy = Hierarchy.Empty(); Assert.That(hierarchy.ToString(), Is.EqualTo("Hierarchy (0 items)")); hierarchy.Enterprise = new Enterprise(); Assert.That(hierarchy.ToString(), Is.EqualTo("Hierarchy (1 item)")); hierarchy.Enterprise.Site.AddSite("Site 1"); Assert.That(hierarchy.ToString(), Is.EqualTo("Hierarchy (2 items)")); }