### Question:
ScriptEngine { public static void cleanUp () { if (getInstance() == null) { return; } ScriptEngine.instance.shutdown(); ScriptEngine.instance = null; } protected  ScriptEngine(); static void init(); static IScriptEngine getInstance(); static void cleanUp();  }### Answer:
@Test public void testCleanUpWithoutInit () { ScriptEngine.instance = null; ScriptEngine.cleanUp(); }