public void TestRetrieveShiftDetailsWithInvalidUserID()
        {
            //Arrange
            int           userID        = 0;
            IShiftManager _shiftManager = new ShiftManager(_shiftAccessor);
            //Act
            var actualResult = _shiftManager.RetrieveShfitDetailsByUserID(userID);

            Assert.AreEqual(null, actualResult);
        }
        public void TestRetrieveShiftDetailsByUSerIDSuccess()
        {
            //Arrange
            int           userID        = 1;
            IShiftManager _shiftManager = new ShiftManager(_shiftAccessor);

            //Act
            var actualResult = _shiftManager.RetrieveShfitDetailsByUserID(userID);

            //Assert
            Assert.AreEqual(1, actualResult.Count);
        }