public class ClientDetailController : ApiController
    {
        private readonly IQueryDispatcher _queryDispatcher;

        public IHttpActionResult GetCustomerByClientfolderId(int clientfolderId)
        {
            var query = new GetClientDetailQuery() { GetClientDetailRequest = new GetClientDetailRequest() { ClientFolderId = clientfolderId } };

            try
            {
                GetClientDetailResponse response = _queryDispatcher.Dispatch<GetClientDetailQuery, GetClientDetailRequestQueryResults>(query).GetClientDetailResponse;
                return Ok(response);
            }
            catch (NotFoundException)
            {
                return NotFound();
            }
        }
    }

    [TestFixture]
    public class ClientDetailControllerTests
    {
        private IQueryDispatcher _fakeDispatcher;
        private ClientDetailController _clientDetailController;

        [SetUp]
        public void init()
        {
            _fakeDispatcher = Substitute.For<IQueryDispatcher>();
            _clientDetailController = new ClientDetailController(_fakeDispatcher);
        }

        [Test]
        public void GivenInvalidClientFolderId_GetCustomerByClientFolderIdReturnsNotFound()
        {
            var _fakeClientFolderResquest = 0;
            var query = new GetClientDetailQuery() { GetClientDetailRequest = new GetClientDetailRequest() { ClientFolderId = _fakeClientFolderResquest } };
            _fakeDispatcher.Dispatch<GetClientDetailQuery, GetClientDetailRequestQueryResults>(query).Returns(x => { throw new NotFoundException(); });
            var actionResult = _clientDetailController.GetCustomerByClientfolderId(_fakeClientFolderResquest);
            Assert.IsInstanceOf<NotFoundResult>(actionResult);
        }
    }