@Test
  public void testFetchContentSignedOwner() throws Exception {
    oauth.httpResponse = CACHEABLE;
    signedRequest.getOAuthArguments().setSignViewer(false);
    HttpResponse httpResponse = requestPipeline.execute(signedRequest);
    assertEquals(CACHEABLE, httpResponse);
    assertEquals(1, cacheProvider.createCache(DefaultHttpCache.CACHE_NAME).getSize());

    // Invalidate by owner only
    service.invalidateUserResources(ImmutableSet.of("OwnerX"), appxToken);

    oauth.httpResponse =
        new HttpResponseBuilder(CACHEABLE).setResponseString("NEWCONTENT1").create();
    httpResponse = requestPipeline.execute(signedRequest);
    assertEquals("NEWCONTENT1", httpResponse.getResponseAsString());
    assertEquals("o=1;", httpResponse.getHeader(DefaultInvalidationService.INVALIDATION_HEADER));
    assertEquals(1, cacheProvider.createCache(DefaultHttpCache.CACHE_NAME).getSize());

    // Invalidating viewer has no effect
    service.invalidateUserResources(ImmutableSet.of("ViewerX"), appxToken);
    oauth.httpResponse =
        new HttpResponseBuilder(CACHEABLE).setResponseString("NEWCONTENT2").create();
    httpResponse = requestPipeline.execute(signedRequest);
    assertEquals("NEWCONTENT1", httpResponse.getResponseAsString());
    assertEquals("o=1;", httpResponse.getHeader(DefaultInvalidationService.INVALIDATION_HEADER));
    assertEquals(1, cacheProvider.createCache(DefaultHttpCache.CACHE_NAME).getSize());
  }
 @Test
 public void testInvalidateUrl() throws Exception {
   cache.addResponse(new HttpRequest(URI), CACHEABLE);
   assertEquals(1, cacheProvider.createCache(DefaultHttpCache.CACHE_NAME).getSize());
   service.invalidateApplicationResources(ImmutableSet.of(URI), appxToken);
   assertEquals(0, cacheProvider.createCache(DefaultHttpCache.CACHE_NAME).getSize());
 }
  @Test
  public void testFetchContentWithMarker() throws Exception {
    oauth.httpResponse = CACHEABLE;

    // First entry added to cache is unmarked
    HttpResponse httpResponse = requestPipeline.execute(signedRequest);
    assertEquals(CACHEABLE, httpResponse);
    assertEquals(1, cacheProvider.createCache(DefaultHttpCache.CACHE_NAME).getSize());

    // Invalidate content for OwnerX. Next entry will have owner mark
    service.invalidateUserResources(ImmutableSet.of("OwnerX"), appxToken);

    oauth.httpResponse =
        new HttpResponseBuilder(CACHEABLE).setResponseString("NEWCONTENT1").create();
    httpResponse = requestPipeline.execute(signedRequest);
    assertEquals("NEWCONTENT1", httpResponse.getResponseAsString());
    assertEquals("o=1;", httpResponse.getHeader(DefaultInvalidationService.INVALIDATION_HEADER));
    assertEquals(1, cacheProvider.createCache(DefaultHttpCache.CACHE_NAME).getSize());

    // Invalidate content for ViewerX. Next entry will have both owner and viewer mark
    service.invalidateUserResources(ImmutableSet.of("ViewerX"), appxToken);
    oauth.httpResponse =
        new HttpResponseBuilder(CACHEABLE).setResponseString("NEWCONTENT2").create();
    httpResponse = requestPipeline.execute(signedRequest);
    assertEquals("NEWCONTENT2", httpResponse.getResponseAsString());
    assertEquals(
        "o=1;v=2;", httpResponse.getHeader(DefaultInvalidationService.INVALIDATION_HEADER));
    assertEquals(1, cacheProvider.createCache(DefaultHttpCache.CACHE_NAME).getSize());
  }
 @Test
 public void testInvalidateUsers() throws Exception {
   service.invalidateUserResources(ImmutableSet.of("example.org:1", "example.org:2"), appxToken);
   service.invalidateUserResources(ImmutableSet.of("example.org:1", "example.org:2"), appyToken);
   assertEquals(4, cacheProvider.createCache(DefaultInvalidationService.CACHE_NAME).getSize());
   assertNotNull(
       cacheProvider
           .createCache(DefaultInvalidationService.CACHE_NAME)
           .getElement("INV_TOK:AppX:1"));
   assertNotNull(
       cacheProvider
           .createCache(DefaultInvalidationService.CACHE_NAME)
           .getElement("INV_TOK:AppX:2"));
   assertNotNull(
       cacheProvider
           .createCache(DefaultInvalidationService.CACHE_NAME)
           .getElement("INV_TOK:AppY:1"));
   assertNotNull(
       cacheProvider
           .createCache(DefaultInvalidationService.CACHE_NAME)
           .getElement("INV_TOK:AppY:2"));
 }