public function testGridFsDeleteWithCustomPrefix()
{
$data = array('_id' => new MongoId());
$db = new MongoDb($this->_testConfig + array('gridPrefix' => 'custom'));
$db->server = new MockMongoConnection();
$db->connection = new MockMongoConnection();
Connections::add('temp', array('object' => $db));
MockMongoPost::config(array('meta' => array('source' => 'fs.files', 'connection' => 'temp')));
MockMongoPost::create($data, array('exists' => true))->delete();
$this->assertIdentical(null, $db->connection->gridFsPrefix);
MockMongoPost::config(array('meta' => array('source' => 'custom.files')));
MockMongoPost::create($data, array('exists' => true))->delete();
$this->assertIdentical('custom', $db->connection->gridFsPrefix);
Connections::remove('temp');
}