public function testManyToManyAdd()
{
$list = new BookClubList();
$list->setGroupLeader('Archimedes Q. Porter');
$book = new Book();
$book->setTitle("Jungle Expedition Handbook");
$book->setISBN('TEST');
$list->addBook($book);
$this->assertEquals(1, $list->countBooks(), 'addCrossFk() sets the internal collection properly');
$this->assertEquals(1, $list->countBookListRels(), 'addCrossFk() sets the internal cross reference collection properly');
$list->save();
$this->assertFalse($book->isNew(), 'related object is saved if added');
$rels = $list->getBookListRels();
$rel = $rels[0];
$this->assertFalse($rel->isNew(), 'cross object is saved if added');
$list->clearBookListRels();
$list->clearBooks();
$books = $list->getBooks();
$expected = new ObjectCollection(array($book));
$expected->setModel('Book');
$this->assertEquals($expected, $books, 'addCrossFk() adds the object properly');
$this->assertEquals(1, $list->countBookListRels());
}