如何在模拟T的任务中返回？

Question

我有一种情况，我必须测试返回T的任务的方法，我不知道如何设置模拟 这是一个例子：

    public interface IRepository<T> : IDisposable where T:EntityBase
    { 
        Task<T> FindAsync(params object[] keyValues);
    }

模拟

的配置

  public class GenericConfiguration<T> where T : EntityBase
        {

            public Mock<IPersistenceService> MockPersistence { get; set; }
            public Mock<ILogService> MockLog { get; set; }
            public Mock<IReadOnlyRepository<T>> MockReadOnlyRepository { get; set; }
            public Mock<IRepository<T>> MockEntity { get; set; }
            public MockRepository MockRepository { get; set; }

            public void Setup()
            {
                MockRepository = new MockRepository(MockBehavior.Loose) { DefaultValue = DefaultValue.Mock };
                MockPersistence = MockRepository.Create<IPersistenceService>();
                MockLog = MockRepository.Create<ILogService>();
                MockEntity = MockRepository.Create<IRepository<T>>();
                MockReadOnlyRepository = MockRepository.Create<IReadOnlyRepository<T>>();
            }
        /// <summary>
        /// Setup mock for FindAsync method
        /// </summary>
        /// <param name="results"> </param>
        public void SetupMockEntityRepositoryForFindAsync(List<T> results)
        {
            SetupMocForPersistence();
            MockEntity.Setup(r => r.FindAsync(It.IsAny<object>())).Returns(Task.FromResult<T>(null));
        }
}