### Question:
CookieUtil { public static int dropAllCookies(final HttpServletRequest request, final HttpServletResponse response, final String cookiePath) { final Cookie[] cookies = request.getCookies(); if (cookies == null) { return 0; } return dropCookies(response, cookies, cookiePath); } 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 testDropAllCookies() { int expResult = cookies.length; int result = CookieUtil.dropAllCookies(request, response, "/"); assertEquals(expResult, result); }