public void ScanBooksBookNotFound()
{
var member = CreateMockIMember();
var ctrl = new BorrowController(_display, _reader, _scanner, _printer, _bookDao, _loanDao, _memberDao);
// Set the UI to the mock so we can test
var borrowctrl = Substitute.For <ABorrowControl>();
ctrl._ui = borrowctrl;
InitialiseToScanBookPreConditions(ctrl, member);
_bookDao.GetBookByID(0).Returns((IBook)null);
ctrl.bookScanned(0);
_bookDao.Received().GetBookByID(0);
borrowctrl.Received().DisplayErrorMessage("Book scanned was not found");
Assert.Equal(EBorrowState.SCANNING_BOOKS, ctrl._state);
}