单元测试 Unity 配置文件“无法解析类型名称或别名 xxxx”

Question

我想要一个简单的单元测试来验证我的统一配置 xml 中的所有类型都是有效的

[TestMethod]
[TestCategory("IntegrationTest")]
[DeploymentItem(@"..\..\..\App\Unity.config", @"MyApp")]
public void VerifyTypeNamesForMyAppUnityConfig()
{       
   var fileMap = new ExeConfigurationFileMap { 
      ExeConfigFilename = @"MyApp\Unity.config" 
   };
   var configuration = ConfigurationManager
       .OpenMappedExeConfiguration(fileMap, ConfigurationUserLevel.None);
   var unitySection = (UnityConfigurationSection)configuration.GetSection("unity");
   var container = new UnityContainer();

   container.LoadConfiguration(unitySection);
}

Unity.config 在执行应用程序时起作用。

我已经引用了Test项目中的所有程序集

我得到了这个异常

Test Name:  VerifyTypeNamesForMyAppUnityConfig
Test FullName:  MyApp.Test.UnityTests.VerifyTypeNamesForMyAppUnityConfig
Test Source:    c:\SourceControl\MyAppMerge\MyApp.Test\UnityTests.cs : line 47
Test Outcome:   Failed
Test Duration:  0:00:00.5187389

Result Message: 
Test method MyApp.Test.UnityTests.VerifyTypeNamesForMyAppUnityConfig threw exception: 
System.InvalidOperationException: The type name or alias MyApp.Services.Attachments.AttachmentService, MyApp.Services.Attachments could not be resolved. Please check your configuration file and verify this type name.
Result StackTrace:  
at Microsoft.Practices.Unity.Configuration.ConfigurationHelpers.TypeResolverImpl.ResolveType(String typeNameOrAlias, Boolean throwIfResolveFails)
   at Microsoft.Practices.Unity.Configuration.RegisterElement.GetMappedType()
   at Microsoft.Practices.Unity.Configuration.RegisterElement.ConfigureContainer(IUnityContainer container)
   at Microsoft.Practices.Unity.Configuration.ContainerElement.<>c__DisplayClass1.<ConfigureContainer>b__0(ContainerConfiguringElement element)
   at Microsoft.Practices.ObjectBuilder2.EnumerableExtensions.ForEach[TItem](IEnumerable`1 sequence, Action`1 action)
   at Microsoft.Practices.Unity.Configuration.ContainerElement.ConfigureContainer(IUnityContainer container)
   at Microsoft.Practices.Unity.Configuration.UnityConfigurationSection.Configure(IUnityContainer container, String configuredContainerName)
   at Microsoft.Practices.Unity.Configuration.UnityContainerExtensions.LoadConfiguration(IUnityContainer container, UnityConfigurationSection section, String containerName)
   at Microsoft.Practices.Unity.Configuration.UnityContainerExtensions.LoadConfiguration(IUnityContainer container, UnityConfigurationSection section)
   at MyApp.Test.UnityTests.VerifyTypeNamesForMyAppUnityConfig() in c:\SourceControl\MyAppMerge\MyApp.Test\UnityTests.cs:line 61

如果我进行此更改，则测试通过

var WTF = new List<AttachmentService>();
container.LoadConfiguration(unitySection);

但是这样失败了

//var WTF = new List<AttachmentService>();
container.LoadConfiguration(unitySection);

为什么？

我有数百个统一配置。他们中的大多数都工作。只有少数类需要这个小技巧。我无法说出这些少数类/程序集有什么不同。唯一的相似之处是程序集只有 1 到 3 个类（非常小的程序集）

Answer 1

我检查了 TestResults 文件夹（正如 Alexei 建议的那样），它没有程序集！即使它设置为 Copy Local = True。

似乎 MSTest 使用反射来确定复制到 TestResults 文件夹的程序集。

查看此 SO 了解更多详情 TFS not deploying referenced assembly to test dir when on build server

您必须在程序集中引用某些内容（类似于我上面的技巧）

或

获取所有 dll：

[DeploymentItem(@".")]

或者获取一个 dll：

[DeploymentItem(@"YourAssembly.dll")]

注意：您会收到一些“进程无法访问文件”错误，但不要担心它会复制未使用的错误。 （这就是问题所在！）