public void SentenceTaskRepositoryTest_SentenceTasks_Delete_validModel()
        {
            var model = new SentenceTask
            {
                SentenceTaskId = 1,
                Sentence       = "Sentence",
                Category       = "Category",
                Translate      = "Translate"
            };
            var result = rep.Delete(model.SentenceTaskId);

            Assert.AreEqual(model.SentenceTaskId, result, string.Format("result != expected"));
        }
 public string Delete(int id)
 {
     if (!id.Validate())
     {
         throw new Exception("Invalid model");
     }
     return(rep.Delete(id) > 0
             ? "Delete completed successful"
             : null);
 }