我应该对我的引导程序进行单元测试，如果是这样的话？

Question

我的bootstrapper继承自UnityBootstrapper，我试图对它进行单元测试并失败。 我想测试在ConfigureModuleCatalog方法中添加了正确的模块。 我应该尝试对此进行单元测试吗？如果是，我该如何测试呢？ 我正在使用.NET 4.5.1和Prism 6

public class Bootstrapper : UnityBootstrapper
{
    protected override DependencyObject CreateShell()
    {
        return Container.Resolve<MainWindow>();
    }

    protected override void InitializeShell()
    {
        base.InitializeShell();
        Application.Current.MainWindow = (Window)Shell;
        Application.Current.MainWindow.Show();
    }

    protected override void ConfigureModuleCatalog()
    {
        ModuleCatalog moduleCatalog = (ModuleCatalog)ModuleCatalog;
        moduleCatalog.AddModule(typeof(MainShellModule));
    }
}

Answer 1

是的，我会稍微修改你的Bootstrapper来帮助测试：

public class Bootstrapper : UnityBootstrapper
{
    protected override DependencyObject CreateShell()
    {
        return Container.Resolve<MainWindow>();
    }

    protected override void InitializeShell()
    {
        base.InitializeShell();
        Window app_window = Shell as Window;
        if((app_window != null) && (Application.Current != null))
        {
           Application.Current.MainWindow = app_window;
           Application.Current.MainWindow.Show();
        }
    }

    protected override void ConfigureModuleCatalog()
    {
        ModuleCatalog moduleCatalog = (ModuleCatalog)ModuleCatalog;
        moduleCatalog.AddModule(typeof(MainShellModule));
    }
}

然后你可以让你的单元测试看起来像这样：

[TestFixture, RequiresSTA]
public class BootstrapperTest
{
   // Declare private variables here
   Bootstrapper b;

   /// <summary>
   /// This gets called once at the start of the 'TestFixture' attributed
   /// class. You can create objects needed for the test here
   /// </summary>
   [TestFixtureSetUp]
   public void FixtureSetup()
   {
      b = new Bootstrapper();
      b.Run();
   }

   /// <summary>
   /// Assert container is created
   /// </summary>
   [Test]
   public void ShellInitialization()
   {
      Assert.That(b.Container, Is.Not.Null);
   }

   /// <summary>
   /// Assert module catalog created types
   /// </summary>
   [Test]
   public void ShellModuleCatalog()
   {
      IModuleCatalog mod = ServiceLocator.Current.TryResolve<IModuleCatalog>();
      Assert.That(mod, Is.Not.Null);

      // Check that all of your modules have been created (based on mod.Modules)
   }
}