C# 已处置带有OWIN TestServer和AutoFac-LifetimeScope的WebApi2
使用C# 已处置带有OWIN TestServer和AutoFac-LifetimeScope的WebApi2,c#,integration-testing,asp.net-web-api2,owin,autofac,C#,Integration Testing,Asp.net Web Api2,Owin,Autofac,使用Owin.TestServer测试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,我开始为使用OWIN和AutoFac for DI的WebApi应用程序编写集成测试。我总共有3个集成测试。当我单独运行每个测试时,它们都通过了。但是,当我同时运行所有测试时,由于以下AutoFac错误,只有第一个测试成功,其他两个测试失败: System.AggregateException: One or more errors occurred. --->
Owin.TestServer
测试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,我开始为使用OWIN和AutoFac for DI的WebApi应用程序编写集成测试。我总共有3个集成测试。当我单独运行每个测试时,它们都通过了。但是,当我同时运行所有测试时,由于以下AutoFac错误,只有第一个测试成功,其他两个测试失败:
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);
}
}
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);
}
}
AutoFac模块示例:
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的建议很有意义——我的
AutoFacConfig
类使用的是静态方法和成员,这意味着Container
属性在后续测试中存在,不会再次创建,并且被标记为disposed
我决定重构代码,以便不再使用静态成员,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);
}
}
我怀疑是AutoFacConfig导致了一个问题:
public static IContainer Container => _container ?? (_container = BuildContainer());
在这种情况下,\u容器
不是空的,而是处于“Disposed”状态。如果您无条件地重新创建它,它应该可以工作。(我还不熟悉C#6语法,所以这可能不完全正确)
备选答复:
公共类启动
{
公共无效配置(IAppBuilder应用程序)
{
var context=新文本(app.Properties);
var token=context.Get(“host.OnAppDisposing”);
if(令牌!=CancellationToken.None)
{
令牌.寄存器(()=>
{
//要运行的代码
//消除可支配资源
});
}
}
}
如果您在一个测试中调用两个方法,会出现错误吗?是否有特定的原因让您为每个测试重新创建\u server
和\u transactionscope
,而不是为每个测试夹具、组件等创建一个服务器?@Eris-我认为这是一种方法,特别是使用事务范围,以便在测试之间保持数据库的一致性,因为其中一些测试操作数据库。我认为可能是这样,我将对此进行检查。然而,我怀疑处置测试服务器会处置整个应用程序和容器,但它实际上是一个单例,可能就是这样。我会在重构后返回结果。是的,处理静态项是一件棘手的事情,其内部内容超出了我目前的知识范围。工作非常出色-我会用解决方案更新问题谢谢,这为我在类似问题上指明了正确的方向
public static IContainer Container => _container ?? (_container = BuildContainer());
public static IContainer Container => _container = BuildContainer();
public class Startup
{
public void Configuration(IAppBuilder app)
{
var context = new OwinContext(app.Properties);
var token = context.Get<CancellationToken>("host.OnAppDisposing");
if (token != CancellationToken.None)
{
token.Register(() =>
{
// code to run
// null out disposable resources
});
}
}
}