How to test a WPF user interface?

Question

Using win forms with an MVC/MVP architecture, I would normally use a class to wrap a view to test the UI while using mocks for the model and controller/presenter. The wrapp

Answer 1

2016 Update: Use the free TestStack.White framework to automate WPF UI testing

• Project White has been abandoned, but its successor TestStack.White is available via a NuGet package.
• TestStack.White has utility methods for starting WPF apps, finding window/user control elements, clicking buttons/elements, simulating mouse and keyboard events, waiting, etc..

• An example that will launch a WPF app, click a button, and check for result looks like the following:

  using TestStack.White;
  using TestStack.White.UIItems;
  using TestStack.White.Factory;
  
  [TestMethod]
  public void TestDoSomething()
  {
      //Opens the app
      var app = Application.Launch("MyApp.exe");
  
      //Finds the main window (this and above line should be in [TestInitialize])
      var window = app.GetWindow("My App Window Title", InitializeOption.NoCache);
  
      //Finds the button (see other Get...() methods for options)
      var btnMyButton = window.Get("btnMyButtonWPFname");
  
      //Simulate clicking
      btnMyButton.Click();
  
      //Gets the result text box 
      //Note: TextBox/Button is in TestStack.White.UIItems namespace
      var txtMyTextBox = window.Get("txtMyTextBox");
  
      //Check for the result
      Assert.IsTrue(txtMyTextBox.Text == "my expected result");
  
      //Close the main window and the app (preferably in [TestCleanup])
      app.Close();
  }