public void CheckCount() { var extendedListBoxContol = new MockExtendedListBox(); Assert.AreEqual(extendedListBoxContol.Items.Count, 2); extendedListBoxContol.GetChildren(2, 4); Assert.AreEqual(extendedListBoxContol.Items.Count, 6); extendedListBoxContol.GetChildren(3, 4); Assert.AreEqual(extendedListBoxContol.Items.Count, 7); extendedListBoxContol.GetChildren(6, 4); Assert.AreEqual(extendedListBoxContol.Items.Count, 10); }