我使用Owin.TestServer
测试我的应用程序时遇到问题。我找不到任何有用的东西,我希望这是一个社区可以帮助的简单修复:)
最近我开始为我的WebApi应用程序编写集成测试,该应用程序使用OWIN和AutoFac进行DI。我总共有3个集成测试。当我单独运行每个测试时,它们都在通过。但是,当我一次运行所有测试时,由于以下AutoFac错误,只有第一个成功,另外两个失败:
System.AggregateException: One or more errors occurred. --->
System.ObjectDisposedException: Instances cannot be resolved and nested lifetimes cannot be created from this LifetimeScope as it has already been disposed.
Stacktrace表示该错误来自Owin的AutoFac中间件。
我有以下测试设置:
[TestClass]
public class DinnerListControllerTests
{
private TestServer _server;
private TransactionScope _transactionScope;
[TestInitialize]
public void Init()
{
_transactionScope = new TransactionScope(TransactionScopeOption.RequiresNew);
_server = TestServer.Create<Startup>();
}
[TestCleanup]
public void Dispose()
{
_server?.Dispose();
_transactionScope?.Dispose();
}
[TestMethod]
public void GetAllLists()
{
var response = _server.HttpClient.GetAsync("/api/dinnerlists").Result;
response.IsSuccessStatusCode.Should().BeTrue("there should be no error");
var result = response.Content.ReadAsAsync<IEnumerable<DinnerListDTO>>().Result;
result.Should().NotBeNull().And.HaveCount(5);
}
[TestMethod]
public void GetActiveListsReturnsTwoLists()
{
var response = _server.HttpClient.GetAsync("/api/dinnerlists/active").Result;
response.IsSuccessStatusCode.Should().BeTrue();
var result = response.Content.ReadAsAsync<IEnumerable<DinnerListDTO>>().Result;
result.Should()
.NotBeNullOrEmpty()
.And.HaveCount(2)
.And.OnlyContain(dto => dto.OpenUntil.CompareTo(DateTime.Now) > 0);
}
}
GetAllLists
测试将正确执行,但第二个测试将失败并显示上述消息。
我尝试过不同的家属注册范围,但没有帮助。下面是我的AutoFac配置,启动类和示例AutoFac模块:
AutoFacConfig.cs
public class AutoFacConfig
{
private static IContainer _container;
public static IContainer Container => _container ?? (_container = BuildContainer());
public static void ConfigureAutoFac(HttpConfiguration config)
{
if (config == null)
throw new ArgumentNullException(nameof(config));
FluentValidationModelValidatorProvider.Configure(config,
provider => provider.ValidatorFactory = new AutoFacValidatorFactory(Container));
config.DependencyResolver = new AutofacWebApiDependencyResolver(Container);
}
private static IContainer BuildContainer()
{
var autoFacBuilder = new ContainerBuilder();
var assembly = Assembly.GetExecutingAssembly();
autoFacBuilder.RegisterApiControllers(assembly).InstancePerRequest();
autoFacBuilder.RegisterType<DinnerDbContext>().InstancePerRequest();
autoFacBuilder.RegisterModule<RepositoryModule>();
autoFacBuilder.RegisterModule<ServicesModule>();
autoFacBuilder.RegisterModule<ValidationModule>();
autoFacBuilder.RegisterModule<AutoMapperModule>();
autoFacBuilder.RegisterModule<AutofacWebTypesModule>();
return autoFacBuilder.Build();
}
}
Startup.cs:
public class Startup
{
public void Configuration(IAppBuilder appBuilder)
{
var httpConfiguration = new HttpConfiguration();
WebApiConfig.Register(httpConfiguration);
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
AutoFacConfig.ConfigureAutoFac(httpConfiguration);
AutoMapperConfig.RegisterMappings();
appBuilder.UseAutofacMiddleware(AutoFacConfig.Container);
appBuilder.UseAutofacWebApi(httpConfiguration);
appBuilder.UseWebApi(httpConfiguration);
}
}
示例AutoFac模块:
public class RepositoryModule : Module
{
protected override void Load(ContainerBuilder builder)
{
var assembly = System.Reflection.Assembly.GetExecutingAssembly();
builder.RegisterAssemblyTypes(assembly)
.Where(type => type.Name.EndsWith("Repository"))
.AsImplementedInterfaces()
.InstancePerRequest();
}
}
编辑 - 解决方案
@Eris建议的内容很有意义 - 我的AutoFacConfig
类使用的是静态方法和成员,这意味着后续测试中存在Container
属性,并且没有再创建它它被标记为处置。
我决定重构代码,因此AutoFacConfig
不再使用静态成员,因为我不想在应用程序关闭时处理容器。
AutoFacConfig.cs:
public class AutoFacConfig
{
private IContainer _container;
public IContainer Container
{
get { return _container ?? (_container = BuildContainer()); }
}
public void ConfigureAutoFac(HttpConfiguration config)
{
//...
}
private IContainer BuildContainer()
{
var autoFacBuilder = new ContainerBuilder();
//...
return autoFacBuilder.Build();
}
}
Startup.cs
public class Startup
{
public void Configuration(IAppBuilder appBuilder)
{
var httpConfiguration = new HttpConfiguration();
var autofacConfig = new AutoFacConfig(); // create instance of AutoFacConfig
autofacConfig.ConfigureAutoFac(httpConfiguration); // configure autofac
appBuilder.UseAutofacMiddleware(autofacConfig.Container);
appBuilder.UseAutofacWebApi(httpConfiguration);
appBuilder.UseWebApi(httpConfiguration);
}
}