code: /** 
   * Method: getSupportedConfigs(String stackName, String version, String serviceName)
   */
  @Test public void getSupportedConfigs() throws Exception {
    Map<String,Map<String,String>> configsAll=metaInfo.getSupportedConfigs(STACK_NAME_HDP,STACK_VERSION_HDP,SERVICE_NAME_HDFS);
    Set<String> filesKeys=configsAll.keySet();
    for (  String file : filesKeys) {
      Map<String,String> configs=configsAll.get(file);
      Set<String> propertyKeys=configs.keySet();
      assertNotNull(propertyKeys);
      assertNotSame(propertyKeys.size(),0);
    }
  }
  