在单元测试中使用 Castle Windsor Class

Question

我是温莎城堡的菜鸟。我正在构建一个使用 Entity Framework 6 和 Castle Windsor 以及 MSTest 单元测试 class 的应用程序。我的应用程序中有一个 class 实现了 IWindsorInstaller。我的单元测试 class 看起来像这样：

[TestClass]
public class DatabaseTests {

    static readonly WindsorContainer Container = new WindsorContainer();

    public DatabaseTests() {
        Container.Install( FromAssembly.This() );
    }

    [TestMethod]
    public void FirstTest() {
        // Test statements
    }

    [TestMethod]
    public void SecondTest() {
        // Test statements
    }

    // Other tests
}

单元测试项目中还有一个安装程序 class，如下所示：

public class TestsInstaller : IWindsorInstaller {
    public void Install( IWindsorContainer container, IConfigurationStore store ) {
        container.Install( new RecipeManager.RepositoriesInstaller() );
    }
}

当我进入单元测试会话时 window 并尝试运行所有测试，第一个成功，其余的我得到这个堆栈跟踪：

Unable to create instance of class UnitTests.DatabaseTests. Error: Castle.MicroKernel.ComponentRegistrationException: Component RecipeManager.DAL.CategoryRepository could not be registered. There is already a component with that name. Did you want to modify the existing component instead? If not, make sure you specify a unique name.. at Castle.MicroKernel.SubSystems.Naming.DefaultNamingSubSystem.Register(IHandler handler) at Castle.MicroKernel.DefaultKernel.AddCustomComponent(ComponentModel model) at Castle.MicroKernel.DefaultKernel.Register(IRegistration[] registrations) at Castle.Windsor.WindsorContainer.Register(IRegistration[] registrations) at RecipeManager.RepositoriesInstaller.Install(IWindsorContainer container, IConfigurationStore store) in C:\Users\Tony\documents\visual studio 2015\Projects\RecipeManager\ManageRecipes\RepositoriesInstaller.cs:line 10 at Castle.Windsor.WindsorContainer.Install(IWindsorInstaller[] installers, DefaultComponentInstaller scope) at Castle.Windsor.WindsorContainer.Install(IWindsorInstaller[] installers) at UnitTests.TestsInstaller.Install(IWindsorContainer container, IConfigurationStore store) in C:\Users\Tony\documents\visual studio 2015\Projects\RecipeManager\UnitTests\TestsInstaller.cs:line 8 at Castle.Windsor.Installer.AssemblyInstaller.Install(IWindsorContainer container, IConfigurationStore store) at Castle.Windsor.WindsorContainer.Install(IWindsorInstaller[] installers, DefaultComponentInstaller scope) at Castle.Windsor.WindsorContainer.Install(IWindsorInstaller[] installers) at UnitTests.DatabaseTests..ctor() in C:\Users\Tony\documents\visual studio 2015\Projects\RecipeManager\UnitTests\DatabaseTests.cs:line 17

如果我运行一次测试一个单元，它们都会成功。我打算构建大量测试，所以我真的希望能够运行一次完成所有测试。我该如何解决这个问题？

Answer 1

在您的测试中 class，创建一个字段。

private WindsorContainer Container;

（替换现有的静态字段。）

然后，将此添加到您的测试中 class:

[TestInitialize]
public void SetUp()
{
    Container = new WindsorContainer();
    // register your dependencies
}

[TestCleanup]
public void Cleanup()
{
    Container.Dispose();
}

[TestInitialize] 运行每次测试前，[TestCleanup] 每次测试后。
这样，您就不会为每个测试重复使用相同的容器，也不会尝试向该容器重新注册相同的依赖项。在每个测试运行之前，您将创建一个新容器。如果您需要为每个测试使用相同的依赖项，您可以在 Setup() 中注册它们。或者，如果需要，您可以在测试方法中注册它们。

Answer 2

要对此答案进行一些升级：我创建了一个包含 Windsor 容器逻辑的 Base RepositoryTest class。 class 成为所有单元测试 class 的根。

public abstract class RepositoryTestBase
{
    private static IWindsorContainer windsorContainer { get; set; }
    private static IMapper mapper { get; set; }

    protected static IWindsorContainer WindsorContainer
    {
        get
        {
            if (windsorContainer == null)
            {
                WindsorContainerManager.ConfigureWindsor(Assembly.GetExecutingAssembly());
                windsorContainer = WindsorContainerManager.Container;
            }
            return windsorContainer;
        }
    }

    protected IMapper Mapper
    {
        get
        {
            if (mapper == null)
            {
                mapper = WindsorContainer.Resolve<IMapper>();
            }
            return mapper;
        }
    }

    public static T GetResolved<T>()
    {
        return WindsorContainer.Resolve<T>();
    }
}

    [TestFixture, Category("UnitTest")]
public class AccountRepositoryTests : RepositoryTestBase
{
    private IAccountRepository accountRepo = GetResolved<IAccountRepository>();
    private IContactRepository contactRepo = GetResolved<IContactRepository>();

在单元测试中使用 Castle Windsor Class

Using Castle Windsor in Unit Test Class

.net

c#

unit-testing

castle-windsor