public IHttpActionResult GetParentTask(int id)
        {
            ParentTask parentTask = parentTaskBusiness.GetParentTask(id);

            if (parentTask == null)
            {
                return(NotFound());
            }

            return(Ok(parentTask));
        }
        public void GetParentTaskTest()
        {    //Arrange
            ParentTaskBusiness parentTaskBusiness = new ParentTaskBusiness();
            //Act
            ParentTask parentTask = parentTaskBusiness.GetParentTask(2);

            //Assert
            if (parentTask != null)
            {
                Assert.AreEqual(2, parentTask.ParentId);
            }
            else
            {
                Assert.IsNotNull(parentTask);
            }
        }