protected final Properties createProperties() {
    Properties properties = new Properties();
    properties.setProperty(GeodeGlossary.GEMFIRE_PREFIX + MCAST_PORT, "0");
    properties.setProperty(GeodeGlossary.GEMFIRE_PREFIX + LOG_LEVEL, "warning");
    properties.setProperty("file.encoding", "UTF-8");
    return editProperties(properties);
  }
Use to enable debug output in the JUnit process
geode-junit/src/main/java/org/apache/geode/test/golden/GoldenTestCase.java