### Question:
ConfigUtils { public static int getPid() { if (PID < 0) { try { RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean(); String name = runtime.getName(); PID = Integer.parseInt(name.substring(0, name.indexOf('@'))); } catch (Throwable e) { PID = 0; } } return PID; } private  ConfigUtils(); static boolean isNotEmpty(String value); static boolean isEmpty(String value); static int getPid();  }### Answer:
@Test public void getPid() throws Exception { Assert.assertTrue(ConfigUtils.getPid() >= 0); }