def test(store):
from Book import Book
from Author import Author
from Loan import Loan
from Wrote import Wrote
from Shelf import Shelf
classics = Shelf()
classics.setName('Classics')
store.addObject(classics)
store.saveChanges()
ed = Author()
ed.setName('Edmund Wells')
david = Book()
wrote = Wrote()
ed.addToWrote(wrote)
david.addToAuthors(wrote)
david.setTitle('David Coperfield')
david.setPublisher('Monty Python')
loan = Loan()
loan.setBorrower('A. Git')
david.addToLoans(loan)
david.setShelf(classics)
store.addObject(david)
store.saveChanges()
# create a clone of the book and associated objects
grate = david.clone()
grate.setTitle('Grate Expections')
store.addObject(grate)
store.saveChanges()
assert david is not grate
assert len(grate.authors()) == 1
assert david.authors()[0] is not grate.authors()[0]
assert grate.authors()[0].author() is ed
assert len(grate.loans()) == 0
assert grate.shelf() is david.shelf()
assert grate.publisher() == 'Monty Python'
