AffiliationBackend: Implement the better part of on-demand fetching.

components/password_manager/core/browser/fake_affiliation_api.cc

Index: components/password_manager/core/browser/fake_affiliation_api.cc
diff --git a/components/password_manager/core/browser/fake_affiliation_api.cc b/components/password_manager/core/browser/fake_affiliation_api.cc
new file mode 100644
index 0000000000000000000000000000000000000000..38e15ad3078828050d6f4f24b771461e7ed18c21
--- /dev/null
+++ b/components/password_manager/core/browser/fake_affiliation_api.cc
@@ -0,0 +1,69 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "components/password_manager/core/browser/fake_affiliation_api.h"
+
+#include <algorithm>
+
+#include "base/memory/scoped_ptr.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace password_manager {
+
+ScopedFakeAffiliationAPI::ScopedFakeAffiliationAPI() {
+}
+
+ScopedFakeAffiliationAPI::~ScopedFakeAffiliationAPI() {
+  // Note that trying to provide details of dangling fetchers would be unwise,
+  // as it is quite possible that they have been destroyed already.
+  EXPECT_FALSE(HasPendingRequest())
+      << "Pending AffilitionFetcher on shutdown.\n"
+      << "Call IgnoreNextRequest() if this is intended.";
+}
+
+void ScopedFakeAffiliationAPI::AddTestEquivalenceClass(
+    const AffiliatedFacets& affiliated_facets) {
+  preset_equivalence_relation_.push_back(affiliated_facets);
+}
+
+bool ScopedFakeAffiliationAPI::HasPendingRequest() {
+  return fake_fetcher_factory_.has_pending_fetchers();
+}
+
+std::vector<FacetURI> ScopedFakeAffiliationAPI::GetNextRequestedFacets() {
+  if (fake_fetcher_factory_.has_pending_fetchers())
+    return fake_fetcher_factory_.PeekNextFetcher()->requested_facet_uris();
+  return std::vector<FacetURI>();
+}
+
+void ScopedFakeAffiliationAPI::ServeNextRequest() {
+  if (!fake_fetcher_factory_.has_pending_fetchers())
+    return;
+
+  FakeAffiliationFetcher* fetcher = fake_fetcher_factory_.PopNextFetcher();
+  scoped_ptr<AffiliationFetcherDelegate::Result> fake_response(
+      new AffiliationFetcherDelegate::Result);
+  for (const auto& preset_equivalence_class : preset_equivalence_relation_) {
+    bool had_intersection_with_request = false;
+    for (const auto& requested_facet_uri : fetcher->requested_facet_uris()) {
+      if (std::find(preset_equivalence_class.begin(),
+                    preset_equivalence_class.end(),
+                    requested_facet_uri) != preset_equivalence_class.end()) {
+        had_intersection_with_request = true;
+        break;
+      }
+    }
+    if (had_intersection_with_request)
+      fake_response->push_back(preset_equivalence_class);
+  }
+  fetcher->SimulateSuccess(fake_response.Pass());
+}
+
+void ScopedFakeAffiliationAPI::IgnoreNextRequest() {
+  if (!fake_fetcher_factory_.has_pending_fetchers())
+    return;
+  ignore_result(fake_fetcher_factory_.PopNextFetcher());
+}
+
+}  // namespace password_manager