### Question:
CookieCollection implements Collection<Cookie> { @Override public void clear() { cookieMap.clear(); } CookieCollection();  CookieCollection(Cookie... cookies);  CookieCollection(Collection<? extends Cookie> cookies); @Override int size(); @Override boolean isEmpty(); @Override boolean contains(Object o); @Override Iterator<Cookie> iterator(); Cookie [] toArray(); @Override T[] toArray(T[] ts); @Override boolean add(Cookie cookie); @Override boolean remove(Object o); Cookie get(String name); @Override boolean containsAll(Collection<?> collection); @Override boolean addAll(Collection<? extends Cookie> collection); @Override boolean removeAll(Collection<?> collection); @Override boolean retainAll(Collection<?> collection); @Override void clear();  }### Answer:
@Test public void clear() throws Exception { CookieCollection cookies = new CookieCollection(cookie); cookies.clear(); Assert.assertTrue(cookies.isEmpty()); }