public async Task <bool> TestFor_DeleteInterview()
        {
            //Arrange
            var res = false;

            service.Setup(repo => repo.AddInterview(_interview)).ReturnsAsync(_interview);
            var result = await _interviewTS.AddInterview(_interview);

            //Action
            service.Setup(repos => repos.DeleteInterviewById(result.InterviewId)).ReturnsAsync(true);
            var resultDelete = await _interviewTS.DeleteInterviewById(result.InterviewId);

            //Assertion
            if (resultDelete == true)
            {
                res = true;
            }
            //final result displaying in text file
            File.AppendAllText("../../../output_revised.txt", "TestFor_DeleteInterview=" + res + "\n");
            return(res);
        }
        public async Task <bool> Testfor_Validate_InValid_DeleteInterview()
        {
            //Arrange
            var res        = false;
            var _interview = new Interview()
            {
            };

            //Action
            service.Setup(repos => repos.DeleteInterviewById(_interview.InterviewId)).ReturnsAsync(true);
            var result = await _interviewTS.DeleteInterviewById(_interview.InterviewId);

            //Assertion
            if (result == true)
            {
                res = true;
            }
            //final result displaying in text file
            File.AppendAllText("../../../output_exception_revised.txt", "Testfor_Validate_InValid_DeleteInterview=" + res + "\n");
            return(res);
        }