public function testGetRevision()
{
$document = $this->collection->enableVersioning()->createDocument(array('param' => 'value'))->save()->set('param', 'value1')->save()->set('param', 'value2')->save();
$revisions = $document->getRevisions();
next($revisions);
$key = key($revisions);
$revision = $document->getRevision($key);
$this->assertEquals('value1', $revision->param);
}