Wie zum programmgesteuerten start einer WPF-Anwendung, die von einem unit test?

Bin ich etwas ähnliche in VS2008 und das manuelle erstellen der tests mit dem UI-Spy zu helfen, mich zu identifizieren, die Steuerung und einige helper-Methoden, die nicht dargestellt sind, um die trigger-Schaltfläche klickt, und überprüfen Sie die Werte auf dem Bildschirm. Ich benutze das Prozess-Objekt, um die Anwendung zu starten ich Teste in der TestInitialize-Methode und in der TestCleanup Methode, die ich beenden Sie den Prozess. Ich habe eine Reihe von Möglichkeiten, um sicherzustellen, dass der Prozess komplett geschlossen in der Bereinigung. Für den absoluten Pfad problem, das ich nur programmgesteuert lookup den aktuellen Pfad, und fügen Sie meine-Anwendung ausführbare Datei. Da ich nicht weiß, wie lange es dauert, bis die Anwendung zu starten, legte ich AutomationId in mein Hauptfenster und setzen Sie ihn auf "UserApplicationWindow" und warten Sie, um sichtbar zu werden, natürlich, Sie haben etwas, was Sie warten könnte. Schliesslich benutze ich die MyTestClass als Basis-Klasse und erweitern Sie die Klasse für die verschiedenen tests.

[TestClass]
public class MyTestClass
{
    private Process _userAppProcess;
    private AutomationElement _userApplicationElement ;

    ///<summary>
    ///Gets the current directory where the executables are located.  
    ///</summary>
    ///<returns>The current directory of the executables.</returns>
    private static String GetCurrentDirectory()
    {
        return Path.GetDirectoryName(new Uri(Assembly.GetExecutingAssembly().GetName().CodeBase).AbsolutePath).Replace("%20", " ");
    }

    [TestInitialize]
    public void SetUp()
    {
        Thread appThread = new Thread(delegate()
        {
            _userAppProcess = new Process();
            _userAppProcess.StartInfo.FileName =GetCurrentDirectory() + "\\UserApplication.exe";
            _userAppProcess.StartInfo.WorkingDirectory = DirectoryUtils.GetCurrentDirectory();
            _userAppProcess.StartInfo.UseShellExecute = false;
            _userAppProcess.Start();
        });
        appThread.SetApartmentState(ApartmentState.STA);
        appThread.Start();

        WaitForApplication();
    }

    private void WaitForApplication()
    {
        AutomationElement aeDesktop = AutomationElement.RootElement;
        if (aeDesktop == null)
        {
            throw new Exception("Unable to get Desktop");
        }

        _userApplicationElement = null;
        do
        {
            _userApplicationElement = aeDesktop.FindFirst(TreeScope.Children,
                new PropertyCondition(AutomationElement.AutomationIdProperty, "UserApplicationWindow"));
            Thread.Sleep(200);
        } while ( (_userApplicationElement == null || _userApplicationElement.Current.IsOffscreen) );

    }

    [TestCleanup]
    public void CleanUp()
    {
        try
        {
            //Tell the application's main window to close.
            WindowPattern window = _userApplicationElement.GetCurrentPattern(WindowPattern.Pattern) as WindowPattern ;
            window.Close();
            if (!_userAppProcess.WaitForExit(3000))
            {
                //We waited 3 seconds for the User Application to close on its own.  
                //Send a close request again through the process class.
                _userAppProcess.CloseMainWindow();
            }

            //All done trying to close the window, terminate the process
            _userAppProcess.Close();
            _userAppProcess = null; 
        }
        catch (Exception ex)
        {
            //I know this is bad, but catching the world is better than letting it fail.
        }
    }
}

InformationsquelleAutor RodKnee

Hier ist, was ich gerade gehackt zusammen, der es schafft, unit-Tests caliburn micro ein wenig:

[TestFixture]
public class when_running_bootstrapper
{
    [Test]
    public void it_should_request_its_view_model()
    {
        TestFactory.PerformRun(b =>
            CollectionAssert.Contains(b.Requested, typeof(SampleViewModel).FullName));
    }

    [Test]
    public void it_should_request_a_window_manager_on_dotnet()
    {
        TestFactory.PerformRun(b => 
            CollectionAssert.Contains(b.Requested, typeof(IWindowManager).FullName));
    }

    [Test]
    public void it_should_release_the_window_manager_once()
    {
        TestFactory.PerformRun(b =>
            Assert.That(b.ReleasesFor<IWindowManager>(), Is.EqualTo(1)));
    }

    [Test]
    public void it_should_release_the_root_view_model_once()
    {
        TestFactory.PerformRun(b =>
            Assert.That(b.ReleasesFor<SampleViewModel>(), Is.EqualTo(1)));
    }
}

static class TestFactory
{
    public static void PerformRun(Action<TestBootStrapper> testLogic)
    {
        var stackTrace = new StackTrace();
        var name = stackTrace.GetFrames().First(x => x.GetMethod().Name.StartsWith("it_should")).GetMethod().Name;
        var tmpDomain = AppDomain.CreateDomain(name,
            AppDomain.CurrentDomain.Evidence,
            AppDomain.CurrentDomain.BaseDirectory,
            AppDomain.CurrentDomain.RelativeSearchPath,
            AppDomain.CurrentDomain.ShadowCopyFiles);
        var proxy = (Wrapper)tmpDomain.CreateInstanceAndUnwrap(typeof (TestFactory).Assembly.FullName, typeof (Wrapper).FullName);

        try
        {
            testLogic(proxy.Bootstrapper);
        }
        finally
        {
            AppDomain.Unload(tmpDomain);
        }
    }
}

[Serializable]
public class Wrapper
    : MarshalByRefObject
{
    TestBootStrapper _bootstrapper;

    public Wrapper()
    {
        var t = new Thread(() =>
            {
                var app = new Application();
                _bootstrapper = new TestBootStrapper(app);
                app.Run();
            });
        t.SetApartmentState(ApartmentState.STA);
        t.Start();
        t.Join();
    }

    public TestBootStrapper Bootstrapper
    {
        get { return _bootstrapper; }
    }
}

[Serializable]
public class TestBootStrapper
    : Bootstrapper<SampleViewModel>
{
    [NonSerialized]
    readonly Application _application;

    [NonSerialized]
    readonly Dictionary<Type, object> _defaults = new Dictionary<Type, object>
        {
            { typeof(IWindowManager), new WindowManager() }
        };

    readonly Dictionary<string, uint> _releases = new Dictionary<string, uint>();
    readonly List<string> _requested = new List<string>();

    public TestBootStrapper(Application application)
    {
        _application = application;
    }

    protected override object GetInstance(Type service, string key)
    {
        _requested.Add(service.FullName);

        if (_defaults.ContainsKey(service))
            return _defaults[service];

        return new SampleViewModel();
    }

    protected override void ReleaseInstance(object instance)
    {
        var type = instance.GetType();
        var t = (type.GetInterfaces().FirstOrDefault() ?? type).FullName;

        if (!_releases.ContainsKey(t))
            _releases[t] = 1;
        else
            _releases[t] = _releases[t] + 1;
    }

    protected override IEnumerable<object> GetAllInstances(Type service)
    {
        throw new NotSupportedException("Not in this test");
    }

    protected override void BuildUp(object instance)
    {
        throw new NotSupportedException("Not in this test");
    }

    protected override void Configure()
    {
        base.Configure();
    }

    protected override void OnExit(object sender, EventArgs e)
    {
        base.OnExit(sender, e);
    }

    protected override void OnStartup(object sender, System.Windows.StartupEventArgs e)
    {
        base.OnStartup(sender, e);

        _application.Shutdown(0);
    }

    protected override IEnumerable<System.Reflection.Assembly> SelectAssemblies()
    {
        return new[] { typeof(TestBootStrapper).Assembly };
    }

    public IEnumerable<string> Requested
    {
        get { return _requested; }
    }

    public uint ReleasesFor<T>()
    {
        if (_releases.ContainsKey(typeof(T).FullName))
            return _releases[typeof (T).FullName];
        return 0u;
    }
}

[Serializable]
public class SampleViewModel
{
}

InformationsquelleAutor Henrik