NotImplementedException DynamicProxy2 error when CallBase = true while mocking interfaces

[MichaelLogutov]

This code:

[TestClass]
public class Tests
{
    public interface IDataService
    {
        IList<int> GetData ();
    }


    [TestMethod]
    public void Test ()
    {
        // arrange
        var data_service_mock = new Mock<IDataService> ();
        data_service_mock.DefaultValue = DefaultValue.Mock;
        data_service_mock.CallBase = true;


        // act
        var data = data_service_mock.Object.GetData ();
        var result = data.Sum ();


        // assert
        Assert.IsTrue (result == 0);
    }
}

Throws:

Test method Bug.Tests.Test threw exception: 
System.NotImplementedException: This is a DynamicProxy2 error: The interceptor attempted to 'Proceed' for method 'System.Collections.Generic.IEnumerator`1[System.Int32] GetEnumerator()' which has no target. When calling method without target there is no implementation to 'proceed' to and it is the responsibility of the interceptor to mimic the implementation (set return value, out arguments etc)
    at Castle.DynamicProxy.AbstractInvocation.ThrowOnNoTarget()
   at Castle.DynamicProxy.Internal.CompositionInvocation.EnsureValidTarget()
   at Castle.Proxies.Invocations.IEnumerable`1_GetEnumerator.InvokeMethodOnTarget()
   at Castle.DynamicProxy.AbstractInvocation.Proceed()
   at Moq.Proxy.CastleProxyFactory.CallContext.InvokeBase()
   at Moq.InvokeBase.HandleIntercept(ICallContext invocation, InterceptorContext ctx, CurrentInterceptContext localctx)
   at Moq.Interceptor.Intercept(ICallContext invocation)
   at Moq.Proxy.CastleProxyFactory.Interceptor.Intercept(IInvocation invocation)
   at Castle.DynamicProxy.AbstractInvocation.Proceed()
   at Castle.Proxies.IList`1Proxy.GetEnumerator()
   at System.Linq.Enumerable.Sum(IEnumerable`1 source)
   at Bug.Tests.Test() in Tests.cs: line 28

Moq v 4.2.1408.0717

The exception is not thrown when CallBase set to false which is strange because it should has no side effects when mocking interfaces.

It seems that this issue started to appear beginning version 4.2.1408.619.

[ploeh]

FWIW, I can confirm that I can reproduce this behaviour.

[sgrassie]

I just encountered this as well, which made a lot of red show up.

Following @ploeh's findings in AutoFixture/AutoFixture#303, I downgraded Moq to 4.2.1402.2112, and everything went green again.

[LeonidLevin]

This seems to have been fixed.
Please, close the issue!