@Test
    void testNoHeader() {
        Chain<Searcher> chain = getSearchChain();
        Query query = new Query("?query=foo&custid=foo");
        Result result = new Execution(chain, Execution.Context.createContextStub()).search(query);
        assertEquals(0, getCacheControlHeaders(result).size());
    }
Assert that cache header ListMap exactly match given array of expected cache headers
@param values - Array of cache control headers expected, e.g. {"max-age=120", "stale-while-revalidate=3600"}
@param cacheheaders - The "Cache-Control" headers from the response ListMap
container-search/src/test/java/com/yahoo/search/searchers/test/CacheControlSearcherTestCase.java