public function testNoTargetDocument()
{
$node = new CmsNode();
$node->content = $this->dm->find('Doctrine\\Tests\\Models\\CMS\\CmsArticle', $this->articleId);
$this->dm->persist($node);
$this->dm->flush();
$this->dm->clear();
$node = $this->dm->find('Doctrine\\Tests\\Models\\CMS\\CmsNode', $node->id);
$this->assertInstanceof('Doctrine\\Tests\\Models\\CMS\\CmsArticle', $node->content);
}