Components_Configs::unshiftConfigurationType PHP Method

    public function unshiftConfigurationType(Components_Config $type)
    {
        array_unshift($this->_configs, $type);
    }

 public function testPushConfig()
 {
     $configs = new Components_Configs();
     $configs->addConfigurationType($this->_getAConfig());
     $configs->unshiftConfigurationType($this->_getBConfig());
     $config = $configs->getOptions();
     $this->assertEquals('A', $config['a']);
 }