public void ReserveRoomReturnsFalse()
        {
            //arrange
            _findFreeRoom.ReturnNumberOfFreeRoom(Arg.Any <int[][]>(), Arg.Any <int>(), Arg.Any <int>()).Returns(-1);

            //act
            var roomReservationResult = _roomReservation.ReserveRoom((1, 2));

            //assert
            Assert.False(roomReservationResult);
            _findFreeRoom.Received(1).ReturnNumberOfFreeRoom(Arg.Any <int[][]>(), Arg.Any <int>(), Arg.Any <int>());
        }
        public bool ReserveRoom(ValueTuple <int, int> reservationDays)
        {
            int numberOfFreeRoom = _findFreeRoom.ReturnNumberOfFreeRoom(_hotel.Rooms, reservationDays.Item1, reservationDays.Item2);

            if (numberOfFreeRoom == -1)
            {
                return(false);
            }
            else
            {
                for (int i = reservationDays.Item1; i <= reservationDays.Item2; i++)
                {
                    _hotel.Rooms[numberOfFreeRoom][i] = 1;
                }
                return(true);
            }
        }