public function testDoPreUpdate()
{
$request = new ContactRequest();
$updatedAt = new \DateTime();
$request->setUpdatedAt($updatedAt);
$request->preUpdate();
$this->assertNotNull($request->getUpdatedAt());
$this->assertInstanceOf('DateTime', $request->getUpdatedAt());
$this->assertNotSame($updatedAt, $request->getUpdatedAt());
}