不好意思。我想对表invcount2和reserve1进行合并。下面的代码有什么错误？
@Test
public void rentBook() {
Book book = createDummyBook();
User user = createDummyUser();
BookRentals bookToRent = createDummyRentedBook(user, book);
when(userRepository.doesAccountExistsWithGivenID(user.getId())).thenReturn(true);
when(bookRepository.doesBookExistsWithGivenID(book.getId())).thenReturn(true);
when(bookRepository.findOne(book.getId())).thenReturn(book);
when(userRepository.findOne(user.getId())).thenReturn(user);
String expected = "Book was rented";
assertEquals(expected, bookRentalService.rentBook(user.getId(), book.getId()));
verify(bookRentalsRepository, times(1)).save(bookToRent);
}