Extension to Moq to allow you to write: Mock.Get(obj).VerifyNoMethodsAreCalled();

MoqExtension.cs

    public static class MoqExtensions
    {
        /// <summary>
        /// LINQ + Reflection + Moq = MAGIC!!! 
        /// Calls Mock.Get(obj).Verify(x => x.MethodY(It.IsAny<Z>,...), Times.Never) for all methods
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="mock">mock object you want to assert on</param>
        public static void VerifyNoMethodsAreCalled<T>(this Mock<T> mock) where T : class
        {
            var methods = typeof(T).GetMethods(BindingFlags.Public | BindingFlags.Instance);
            var isAny = typeof(It).GetMethod("IsAny", BindingFlags.Public | BindingFlags.Static);
            foreach (var @delegate in from methodInfo in methods
                                      let parameterMatchers = methodInfo.GetParameters().Select(p => isAny.MakeGenericMethod(p.ParameterType))
                                      let paramz = parameterMatchers.Select(p => Expression.Call(p, new Expression[0]))
                                      let paramM = Expression.Parameter(typeof (T), "m")
                                      let body = Expression.Call(paramM, methodInfo, paramz)
                                      select Expression.Lambda<Action<T>>(body, paramM))
            {
                mock.Verify(@delegate, Times.Never);
            }
        }
    }