C# AutoMockContainer,支持具有非接口依赖项的自动模拟类
我有一个具有非接口依赖项的构造函数:C# AutoMockContainer,支持具有非接口依赖项的自动模拟类,c#,mocking,tdd,moq,C#,Mocking,Tdd,Moq,我有一个具有非接口依赖项的构造函数: public MainWindowViewModel(IWorkItemProvider workItemProvider, WeekNavigatorViewModel weekNavigator) 我正在使用Moq.Contrib自动模拟容器。如果我尝试自动模拟MainWindowViewModel类,则会由于WeekNavigatorViewModel依赖关系而出现错误 是否有支持模拟非接口类型的自动模拟容器 如下图所示;是的,你可以!:-)我将Mo
public MainWindowViewModel(IWorkItemProvider workItemProvider, WeekNavigatorViewModel weekNavigator)
我正在使用Moq.Contrib自动模拟容器。如果我尝试自动模拟MainWindowViewModel类,则会由于WeekNavigatorViewModel依赖关系而出现错误
是否有支持模拟非接口类型的自动模拟容器
如下图所示;是的,你可以!:-)我将Moq.Contrib AutoMockContainer替换为Mark在回答中给出的内容,唯一的区别是自动生成的mock注册为singleton,但是您可以配置它。以下是最终解决方案:
/// <summary>
/// Auto-mocking factory that can create an instance of the
/// class under test and automatically inject mocks for all its dependencies.
/// </summary>
/// <remarks>
/// Mocks interface and class dependencies
/// </remarks>
public class AutoMockContainer
{
readonly IContainer _container;
public AutoMockContainer(MockFactory factory)
{
var builder = new ContainerBuilder();
builder.RegisterSource(new AnyConcreteTypeNotAlreadyRegisteredSource());
builder.RegisterSource(new MoqRegistrationSource(factory));
_container = builder.Build();
}
/// <summary>
/// Gets or creates a mock for the given type, with
/// the default behavior specified by the factory.
/// </summary>
public Mock<T> GetMock<T>() where T : class
{
return (_container.Resolve<T>() as IMocked<T>).Mock;
}
/// <summary>
/// Creates an instance of a class under test,
/// injecting all necessary dependencies as mocks.
/// </summary>
/// <typeparam name="T">Requested object type.</typeparam>
public T Create<T>() where T : class
{
return _container.Resolve<T>();
}
public T Resolve<T>()
{
return _container.Resolve<T>();
}
/// <summary>
/// Registers and resolves the given service on the container.
/// </summary>
/// <typeparam name="TService">Service</typeparam>
/// <typeparam name="TImplementation">The implementation of the service.</typeparam>
public void Register<TService, TImplementation>()
{
var builder = new ContainerBuilder();
builder.RegisterType<TImplementation>().As<TService>().SingleInstance();
builder.Update(_container);
}
/// <summary>
/// Registers the given service instance on the container.
/// </summary>
/// <typeparam name="TService">Service type.</typeparam>
/// <param name="instance">Service instance.</param>
public void Register<TService>(TService instance)
{
var builder = new ContainerBuilder();
if (instance.GetType().IsClass)
builder.RegisterInstance(instance as object).As<TService>();
else
builder.Register(c => instance).As<TService>();
builder.Update(_container);
}
class MoqRegistrationSource : IRegistrationSource
{
private readonly MockFactory _factory;
private readonly MethodInfo _createMethod;
public MoqRegistrationSource(MockFactory factory)
{
_factory = factory;
_createMethod = factory.GetType().GetMethod("Create", new Type[] { });
}
public IEnumerable<IComponentRegistration> RegistrationsFor(Service service, Func<Service, IEnumerable<IComponentRegistration>> registrationAccessor)
{
var swt = service as IServiceWithType;
if (swt == null)
{
yield break;
}
if (!swt.ServiceType.IsInterface)
yield break;
var existingReg = registrationAccessor(service);
if (existingReg.Any())
{
yield break;
}
var reg = RegistrationBuilder.ForDelegate((c, p) =>
{
var createMethod = _createMethod.MakeGenericMethod(swt.ServiceType);
return ((Mock)createMethod.Invoke(_factory, null)).Object;
}).As(swt.ServiceType).SingleInstance().CreateRegistration();
yield return reg;
}
public bool IsAdapterForIndividualComponents
{
get { return false; }
}
}
}
//
///自动模拟工厂,可以创建
///类并自动为其所有依赖项注入模拟。
///
///
///模拟接口和类依赖关系
///
公共类自动模拟容器
{
只读IContainer\u容器;
公共自动模拟容器(模拟工厂)
{
var builder=new ContainerBuilder();
RegisterSource(新的AnyConcreteTypeNotAlreadyRegisteredSource());
builder.RegisterSource(新MOQRRegistrationSource(工厂));
_container=builder.Build();
}
///
///获取或创建给定类型的模拟,并使用
///工厂指定的默认行为。
///
公共Mock GetMock(),其中T:class
{
返回(_container.Resolve()为IMocked).Mock;
}
///
///创建被测试类的实例,
///将所有必要的依赖项作为模拟注入。
///
///请求的对象类型。
public T Create(),其中T:class
{
返回_container.Resolve();
}
公共事务解决方案
{
返回_container.Resolve();
}
///
///在容器上注册并解析给定的服务。
///
///服务
///服务的实现。
公开作废登记册()
{
var builder=new ContainerBuilder();
builder.RegisterType().As().SingleInstance();
builder.Update(_容器);
}
///
///在容器上注册给定的服务实例。
///
///服务类型。
///服务实例。
公共无效寄存器(TService实例)
{
var builder=new ContainerBuilder();
if(instance.GetType().IsClass)
RegisterInstance(实例作为对象).as();
其他的
Register(c=>instance.As();
builder.Update(_容器);
}
类MoqRegistrationSource:IRegistrationSource
{
私有只读MockFactory\u工厂;
私有只读方法信息_createMethod;
公共MOQRRegistrationSource(模拟工厂)
{
_工厂=工厂;
_createMethod=factory.GetType().GetMethod(“创建”,新类型[]{});
}
公共IEnumerable Registrationfor(服务、函数注册接受器)
{
var swt=作为IServiceWithType的服务;
if(swt==null)
{
屈服断裂;
}
如果(!swt.ServiceType.IsInterface)
屈服断裂;
var existingReg=注册接受者(服务);
if(existingReg.Any())
{
屈服断裂;
}
var reg=RegistrationBuilder.ForDelegate((c,p)=>
{
var createMethod=\u createMethod.MakeGenericMethod(swt.ServiceType);
返回((Mock)createMethod.Invoke(_factory,null)).Object;
}).As(swt.ServiceType).SingleInstance().CreateRegistration();
收益率;
}
公共布尔值适用于单个组件
{
获取{return false;}
}
}
}
如果您利用支持请求类型的即时解析的DI容器,您可以非常轻松地自己编写一个
我最近写了一个原型,正是为了这个目的,使用和Moq,但可以使用其他容器代替
以下是相应的IRegistrationSource:
public class AutoMockingRegistrationSource : IRegistrationSource
{
private readonly MockFactory mockFactory;
public AutoMockingRegistrationSource()
{
this.mockFactory = new MockFactory(MockBehavior.Default);
this.mockFactory.CallBase = true;
this.mockFactory.DefaultValue = DefaultValue.Mock;
}
public MockFactory MockFactory
{
get { return this.mockFactory; }
}
#region IRegistrationSource Members
public IEnumerable<IComponentRegistration> RegistrationsFor(
Service service,
Func<Service, IEnumerable<IComponentRegistration>> registrationAccessor)
{
var swt = service as IServiceWithType;
if (swt == null)
{
yield break;
}
var existingReg = registrationAccessor(service);
if (existingReg.Any())
{
yield break;
}
var reg = RegistrationBuilder.ForDelegate((c, p) =>
{
var createMethod =
typeof(MockFactory).GetMethod("Create", Type.EmptyTypes).MakeGenericMethod(swt.ServiceType);
return ((Mock)createMethod.Invoke(this.MockFactory, null)).Object;
}).As(swt.ServiceType).CreateRegistration();
yield return reg;
}
#endregion
}
请注意,您不必在生产代码中使用Autofac(或任何其他DI容器)。如果MyClass依赖于具体类型而不是接口,这是否有效?是的,Autofac的
AnyConcreteTypeNotAlreadyRegisteredSource负责解析具体类型。我想,在该语句中,模拟注册应明确定义为SingleInstance
,如(swt.ServiceType).CreateRegistration()
。我对NSubstitute有一个问题,如果它不是SingleInstance
,可能会有问题。例如:Resolver.Resolve().Get(“1”).Returns(newbasket(1,50))此处的代码>由自动替换容器创建,如果是瞬态的,则返回的代码将永远不会按预期设置,因为它是使用var sut=Resolver.Resolve()的新实例代码>在这里IOrderService使用一个新的替换的ICacheManager
依赖项。
[TestMethod]
public void ContainerCanCreate()
{
// Fixture setup
var builder = new ContainerBuilder();
builder.RegisterSource(new AnyConcreteTypeNotAlreadyRegisteredSource());
builder.RegisterSource(new AutoMockingRegistrationSource());
var container = builder.Build();
// Exercise system
var result = container.Resolve<MyClass>();
// Verify outcome
Assert.IsNotNull(result);
// Teardown
}
public MyClass(ISomeInterface some)