connections

// Set the default connection based on the environment
Connections::add('default', array(
  'development' => array(
    'type' => 'MongoDb',
    'host' => '127.0.0.1',
    'database' => 'schools',
  ),
  'test' => array(
    'type' => 'MongoDb',
    'host' => '10.10.20.4',
    'database' => 'schools',
  ),
  'production' => array(
    'type' => 'MongoDb',
    'host' => 'mongo.example.com',
    'database' => 'schools',
  )
));
                                                                                                                                                                                                                                            
// Set the test connection based on the environment
Connections::add('test', array(
  'development' => array(
    'type' => 'MongoDb',
    'host' => '127.0.0.1',
    'database' => 'schools_test',
  ),
  'test' => array(
    'type' => 'MongoDb',
    'host' => '10.10.20.4',
    'database' => 'schools_test',
  )
));