def test_repository_update_works():
r = Repository()
bk = Book('TITLE', 'DESCRIPTION', 'ISBN')
r.store(bk)
bk = r.find_one('ISBN')
bk.title = 'NEWTITLE'
bk.isbn = 'NEWISBN'
r.store(bk)
maybe_bk = r.find_one('ISBN')
assert_is_none(maybe_bk)
maybe_bk = r.find_one('NEWISBN')
assert_is_not_none(maybe_bk)
assert_equals(maybe_bk.isbn, 'NEWISBN')
assert_equals(maybe_bk.title, 'NEWTITLE')
def test_repository_save_new_one_works():
r = Repository()
bk = Book('NEWTITLE', 'NEWDESCRIPTION', 'NEWISBN')
r.store(bk)
maybe_bk = r.find_one('NEWISBN')
assert_is_not_none(maybe_bk)
assert_equals(maybe_bk.isbn, 'NEWISBN')
assert_equals(maybe_bk.title, 'NEWTITLE')
def test_repository_find_one_fails():
r = Repository()
maybe_bk = r.find_one('NOTAREALISBN')
assert_is_none(maybe_bk)