### Question:
HttpUtil { public static void setNoCache(HttpServletResponse response) { setCachingHeaders(response, 0, false); } private  HttpUtil(); static void setTimeSource(TimeSource timeSource); static TimeSource getTimeSource(); static void setCachingHeaders(HttpServletResponse response); static void setCachingHeaders(HttpServletResponse response, boolean noProxy); static void setCachingHeaders(HttpServletResponse response, int ttl); static void setNoCache(HttpServletResponse response); static void setCachingHeaders(HttpServletResponse response, int ttl, boolean noProxy); static List<Pair<String, String>> getCachingHeadersToSet(int ttl, boolean noProxy); static int getDefaultTtl(); static void setDefaultTtl(int defaultTtl); static boolean isJSONP(HttpServletRequest request); static void setCORSheader(HttpServletResponse resp, Collection<String> validOrigins); static final String ACCESS_CONTROL_ALLOW_ORIGIN_HEADER; }### Answer:
@Test public void testSetNoCche() { HttpUtil.setNoCache(recorder); checkCacheControlHeaders(testStartTime, recorder, 0, true); }