### Question:
CookieUtil { public static boolean addCookie(final Cookie cookie, final HttpServletResponse response) { if (cookie == null || response == null) { return false; } response.addCookie(cookie); return true; } private  CookieUtil(); static boolean addCookie(final Cookie cookie, final HttpServletResponse response); static Cookie getCookie(final HttpServletRequest request, final String cookieName); static List<Cookie> getCookies(final HttpServletRequest request, final String regex); static boolean extendCookieLife(final HttpServletRequest request, final HttpServletResponse response,
                                           final String cookieName, final String cookiePath, final int expiry); static int dropCookies(final HttpServletRequest request, final HttpServletResponse response, final String cookiePath, final String... cookieNames); static int dropCookiesByRegex(final HttpServletRequest request, final HttpServletResponse response, final String cookiePath, final String... regexes); static int dropCookiesByRegexArray(final HttpServletRequest request, final HttpServletResponse response, final String cookiePath, final String[] regexes); static int dropAllCookies(final HttpServletRequest request, final HttpServletResponse response, final String cookiePath);  }### Answer:
@Test public void testAddCookie() { boolean expResult = false; boolean result = CookieUtil.addCookie(null, response); assertEquals(expResult, result); expResult = true; result = CookieUtil.addCookie(dogCookie, response); assertEquals(expResult, result); }