public function testIneffectualUpdateUsingBookObject()
{
$con = Propel::getConnection(BookPeer::DATABASE_NAME);
$c = new Criteria();
$book = BookPeer::doSelectOne($c, $con);
$count = $con->getQueryCount();
$book->setTitle($book->getTitle());
$book->setISBN($book->getISBN());
try {
$rowCount = BookPeer::doUpdate($book, $con);
$this->assertEquals(0, $rowCount, 'BookPeer::doUpdate() should indicate zero rows updated');
} catch (Exception $ex) {
$this->fail('BookPeer::doUpdate() threw an exception');
}
$this->assertEquals($count, $con->getQueryCount(), 'BookPeer::doUpdate(0 does not execute any queries when there are no changes');
}