Question

我正在使用Moq来驱动我的Model-View-Presenter单元测试。我正在测试的特定视图由子视图组成，该视图被建模为如下所示的接口：

public interface ICustomerView:IView{

    public int CustomerId {get;set;}
    public IDateRangeView DateRangeView {get;set;}

}

在某些测试中，我不关心测试行为或与IDateRangeView的交互;我只是希望对该属性的任何调用都不要抛出空引用异常等。看起来Moq通过将mock的DefaultValue设置为DefaultValue.Mock，然后调用SetupAllProperties来支持此功能：

[Test]
public void some_test(){

     var mockView = new Mock<ICustomerView>() { DefaultValue = DefaultValue.Mock };
     mockView.SetupAllProperties();
}

但是，对SetupAllProperties的调用会抛出此异常：

System.ArgumentException occurred
  Message="A matching constructor for the given arguments was not found on the mocked type."
  Source="Moq"
  StackTrace:
       at Moq.Mock`1.<InitializeInstance>b__0()
       at Moq.PexProtector.Invoke(Action action)
       at Moq.Mock`1.InitializeInstance()
       at Moq.Mock`1.get_Object()
       at Moq.Mock`1.GetObject()
       at Moq.Mock.get_Object()
       at Moq.MockDefaultValueProvider.ProvideDefault(MethodInfo member, Object[] arguments)
       at Moq.Mock.<>c__DisplayClass27.<SetupAllProperties>b__23()
       at Moq.PexProtector.Invoke(Action action)
       at Moq.Mock.SetupAllProperties(Mock mock)
       at Moq.Mock.<>c__DisplayClass27.<SetupAllProperties>b__23()
       at Moq.PexProtector.Invoke(Action action)
       at Moq.Mock.SetupAllProperties(Mock mock)
       at Moq.Mock`1.SetupAllProperties()

  InnerException: System.MissingMethodException
       Message="Constructor on type 'DateRangeProxyf68a22c875334e7d858d8ccc5759ecaa' not found."
       Source="mscorlib"
       StackTrace:
            at System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
            at System.Activator.CreateInstance(Type type, Object[] args)
            at Castle.DynamicProxy.ProxyGenerator.CreateClassProxy(Type classToProxy, Type[] additionalInterfacesToProxy, ProxyGenerationOptions options, Object[] constructorArguments, IInterceptor[] interceptors)
            at Castle.DynamicProxy.ProxyGenerator.CreateClassProxy(Type classToProxy, Type[] additionalInterfacesToProxy, ProxyGenerationOptions options, IInterceptor[] interceptors)
            at Castle.DynamicProxy.ProxyGenerator.CreateClassProxy(Type classToProxy, Type[] additionalInterfacesToProxy, IInterceptor[] interceptors)
            at Moq.Mock`1.<InitializeInstance>b__0()
       InnerException:

我的工作是手动设置这样的接口，但必须有一个不那么繁琐的解决方案：

 [Test]
    public void some_test(){

         var mockView = new Mock<ICustomerView>();
         var viewDateMock = new Mock<IDateRangeView>();
         mockView.SetupGet(v=>v.DateRangeView).Returns(viewDateMock.Object);
    }

版本/环境

Moq 3.1.416.3
.NET Framework 3.5
nUnit 2.5.0.9122
VS 2008 + Windows 7 x64

为什么Mock.SetupAllProperties抛出构造函数异常？

0 个答案: