public Test GetTestDetails(int id)
        {
            Test existingTest = new Test();

            try
            {
                existingTest = _test_object.GetTestDetails(id);
                if (existingTest != null)
                {
                    return(existingTest);
                }
                else
                {
                    throw new OASCustomException("Null data encountered.");
                }
            }
            catch (SqlException sqlex)
            {
                log.Error(sqlex);
            }
            catch (OASCustomException customex)
            {
                log.Error(customex.Message);
            }
            catch (Exception ex)
            {
                log.Error(ex.Message);
            }
            return(existingTest);
        }