### Question:
SstLogging { public static void setLevelDebug() { if (logger != null) { logger.setLevel(Level.ALL); } }  static LogLevel getDefaultLevel(); static Logger getLogger(); static Logger getLogger(LogLevel logLevel); static void setLevelDebug(); static void setLevelSilent();  }### Answer:
@Test public void testSetLevelDebug() { final Logger logger = SstLogging.getLogger(); try { SstLogging.setLevelDebug(); assertEquals(Level.ALL, logger.getLevel()); } finally { SstLogging.getLogger(); } }