ArgsTests.CLI.VisualTreeTests.ConsoleAppLifecycleTestBasic C# (CSharp) Метод

        public void ConsoleAppLifecycleTestBasic()
        {
            ConsoleProvider.Current = new CliUnitTestConsole();
            ConsoleApp app = new ConsoleApp(0, 0, 80, 10);

            int addCounter = 0, removeCounter = 0;

            app.ControlAdded.SubscribeForLifetime((c) => { addCounter++; }, app.LifetimeManager);
            app.ControlRemoved.SubscribeForLifetime((c) => { removeCounter++; }, app.LifetimeManager);
            app.LayoutRoot.Id = "LayoutRoot";
            ConsolePanel panel = app.LayoutRoot.Add(new ConsolePanel() { Id = "First panel" });
            // direct child
            Assert.AreEqual(1, addCounter);
            Assert.AreEqual(0, removeCounter);

            var button = panel.Add(new Button() { Id = "Button on first panel" });

            // grandchild
            Assert.AreEqual(2, addCounter);
            Assert.AreEqual(0, removeCounter);

            var innerPanel = new ConsolePanel() { Id="InnerPanel" };
            var innerInnerPanel = innerPanel.Add(new ConsolePanel() { Id = "Inner Inner Panel"});

            // no change since not added to the app yet
            Assert.AreEqual(2, addCounter);
            Assert.AreEqual(0, removeCounter);

            panel.Add(innerPanel);

            // both child and grandchild found on add
            Assert.AreEqual(4, addCounter);
            Assert.AreEqual(0, removeCounter);

            // remove a nested child
            innerPanel.Controls.Remove(innerInnerPanel);
            Assert.AreEqual(4, addCounter);
            Assert.AreEqual(1, removeCounter);

            app.LayoutRoot.Controls.Clear();
            Assert.AreEqual(4, addCounter);
            Assert.AreEqual(4, removeCounter);
        }