public function testOnDocumentWithSimpleFile()
{
$document = $this->createDocument('extra-metadatas.md');
$event = new CarewEvent($document);
$extraction = new Extraction();
$extraction->onDocument($event);
$this->assertSame('title', $document->getTitle());
$this->assertSame('body', $document->getBody());
$this->assertSame('default', $document->getLayout());
$this->assertSame('extra-metadatas.html', $document->getPath());
}