public function testTransformToStringCallback()
{
$entity = new Foo();
$entity->setBar('example');
$entity->setBaz('bazz');
$this->modelManager->expects($this->once())->method('getIdentifierValues')->will($this->returnValue(array(123)));
$transformer = new ModelToIdPropertyTransformer($this->modelManager, 'Sonata\\AdminBundle\\Tests\\Fixtures\\Entity\\Foo', 'bar', false, function ($entity) {
return $entity->getBaz();
});
$this->assertSame(array('identifiers' => array(123), 'labels' => array('bazz')), $transformer->transform($entity));
}