[ADD] added test project for real

Client/ViewModels/LoginViewModel.cs

@@ -0,0 +1,37 @@
+using SharedClientServer;
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Windows;
+
+namespace Client.ViewModels
+{
+
+    class LoginViewModel
+    {
+        ClientData data = ClientData.Instance;
+        private Window window;
+
+        public LoginViewModel(Window window)
+        {
+            this.window = window;
+        }
+        public void UsernameEntered(string name) {
+            User user = new User(name);
+
+            Client client = new Client(user.Username);
+            client.OnSuccessfullConnect = () =>
+            {
+                // because we need to start the main window on a UI thread, we need to let the dispatcher handle it, which will execute the code on the ui thread
+                Application.Current.Dispatcher.Invoke(delegate {
+                    data.User = user;
+                    data.Client = client;
+                    client.SendMessage(JSONConvert.ConstructLobbyRequestMessage());
+                    MainWindow startWindow = new MainWindow();
+                    startWindow.Show();
+                    window.Close();
+                });
+            };
+        }
+    }
+}