### Question:
Debug { public static boolean isDebug() { final DebugOutput output = INSTANCE.output; return output != null && output.isDebug(); } private  Debug(); static void init(DebugOutput... outputs); static void init(@NonNull Collection<? extends DebugOutput> outputs); static boolean isDebug(); static void v(); static void v(Object o1); static void v(Object... args); static void v(Throwable throwable); static void v(Throwable throwable, Object... args); static void d(); static void d(Object o1); static void d(Object... args); static void d(Throwable throwable); static void d(Throwable throwable, Object... args); static void i(); static void i(Object o1); static void i(Object... args); static void i(Throwable throwable); static void i(Throwable throwable, Object... args); static void w(); static void w(Object o1); static void w(Object... args); static void w(Throwable throwable); static void w(Throwable throwable, Object... args); static void e(); static void e(Object o1); static void e(Object... args); static void e(Throwable throwable); static void e(Throwable throwable, Object... args); static void wtf(); static void wtf(Object o1); static void wtf(Object... args); static void wtf(Throwable throwable); static void wtf(Throwable throwable, Object... args); static void trace(); static void trace(Level level); static void trace(int maxItems); static void trace(Level level, int maxItems);  }### Answer:
@Test public void notInitialized() { assertFalse(Debug.isDebug()); }