public void RaiseChangeContentViewEventWhenOpenMenuItemDemand()
        {
            MenuViewModel viewModel = new MenuViewModel();
            ContentBodyEventCatcher catcher = new ContentBodyEventCatcher();
            MenuItem item = new MenuItem();

            viewModel.OpenItemCommand.Execute(item);

            Assert.IsTrue(catcher.ChangeContentViewInvoked);
            Assert.AreEqual(catcher.MenuItem, item);
        }
        public void CorrectlyInitialize()
        {
            MenuViewModel viewModel = new MenuViewModel();

            Assert.AreEqual(2, viewModel.Items.Count );
        }