### Question:
SimonUtils { public static String presentNanoTime(long nanos) { if (nanos == Long.MAX_VALUE || nanos == Long.MIN_VALUE) { return UNDEF_STRING; } return presentNanoTimePrivate((double) nanos); } private  SimonUtils(); static String presentNanoTime(long nanos); static String presentNanoTime(double nanos); static String presentTimestamp(long timestamp); static String presentMinMaxCount(long minmax); static String simonTreeString(Simon simon); static String localName(String name); static boolean checkName(String name); static void validateSimonName(String name); static String generateNameForClass(String suffix); static String generateNameForClassAndMethod(String suffix); static String generateName(); static T doWithStopwatch(String name, Callable<T> callable); static void doWithStopwatch(String name, Runnable runnable); static String compact(String input, int limitTo); static StopwatchAggregate calculateStopwatchAggregate(Simon simon); static StopwatchAggregate calculateStopwatchAggregate(Simon simon, SimonFilter filter); static CounterAggregate calculateCounterAggregate(Simon simon); static CounterAggregate calculateCounterAggregate(Simon simon, SimonFilter filter); static final String NAME_PATTERN_CHAR_CLASS_CONTENT; static final Pattern NAME_PATTERN; static final String ALLOWED_CHARS; static final String MANAGER_SERVLET_CTX_ATTRIBUTE; }### Answer:
@Test(dataProvider = "test-data-utils") public void testUtilPresentNanoTime(long ns, String nsString) throws InterruptedException { Assert.assertEquals(SimonUtils.presentNanoTime(ns), nsString); }