code: @Test public void levelChangePropagator1() throws JoranException, IOException, InterruptedException {
    String loggerName="changePropagator1" + diff;
    java.util.logging.Logger.getLogger(loggerName).setLevel(java.util.logging.Level.INFO);
    verifyJULLevel(loggerName,Level.INFO);
    String configFileAsStr=ClassicTestConstants.JORAN_INPUT_PREFIX + "/jul/levelChangePropagator1.xml";
    configure(configFileAsStr);
    StatusChecker checker=new StatusChecker(loggerContext);
    checker.assertIsErrorFree();
    verifyJULLevel(loggerName,Level.INFO);
    verifyJULLevel("a.b.c." + diff,Level.WARN);
    verifyJULLevel(Logger.ROOT_LOGGER_NAME,Level.TRACE);
  }
  