public void UpTest() { this.dialog1.Active = false; this.dialog2.Active = true; MenuModel target = new MenuModel(); target.MenuDialogs = this.dialogs; target.Up(); Assert.IsTrue(this.menuItem11.Selected); Assert.IsFalse(this.menuItem12.Selected); Assert.IsFalse(this.menuItem21.Selected); Assert.IsTrue(this.menuItem22.Selected); }