Create skeleton for the Prefetching store and initial pipeline step.

components/offline_pages/core/prefetch/suggested_articles_observer_unittest.cc

 // Copyright 2017 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/offline_pages/core/prefetch/suggested_articles_observer.h"
 
 #include "base/run_loop.h"
 #include "base/test/test_simple_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "components/offline_pages/core/client_namespace_constants.h"
@@ skipping 14 matching lines @@
 ContentSuggestion ContentSuggestionFromTestURL(const GURL& test_url) {
   auto category =
       Category::FromKnownCategory(ntp_snippets::KnownCategories::ARTICLES);
   return ContentSuggestion(category, test_url.spec(), test_url);
 }
 
 class TestingPrefetchDispatcher : public PrefetchDispatcher {
  public:
   TestingPrefetchDispatcher() = default;
 
+  void SetService(PrefetchService* service) override{};
+
   void AddCandidatePrefetchURLs(
-      const std::vector<PrefetchURL>& suggested_urls) override {
-    latest_prefetch_urls = suggested_urls;
+      const std::vector<PrefetchURL>& prefetch_urls) override {
+    latest_prefetch_urls = prefetch_urls;
     new_suggestions_count++;
   }
 
   void RemoveAllUnprocessedPrefetchURLs(
       const std::string& name_space) override {
-    DCHECK_EQ(name_space, kSuggestedArticlesNamespace);
+    DCHECK_EQ(kSuggestedArticlesNamespace, name_space);
     latest_prefetch_urls.clear();
     remove_all_suggestions_count++;
   }
 
   void RemovePrefetchURLsByClientId(const ClientId& client_id) override {
-    DCHECK_EQ(client_id.name_space, kSuggestedArticlesNamespace);
+    DCHECK_EQ(kSuggestedArticlesNamespace, client_id.name_space);
     remove_by_client_id_count++;
-    last_removed_client_id = base::MakeUnique<ClientId>(client_id);
+    last_removed_client_id = client_id;
   }
 
   void BeginBackgroundTask(
       std::unique_ptr<ScopedBackgroundTask> task) override {}
   void StopBackgroundTask(ScopedBackgroundTask* task) override {}
 
   std::vector<PrefetchURL> latest_prefetch_urls;
-  std::unique_ptr<ClientId> last_removed_client_id;
+  ClientId last_removed_client_id;
 
   int new_suggestions_count = 0;
   int remove_all_suggestions_count = 0;
   int remove_by_client_id_count = 0;
 };
 
 class TestingPrefetchService : public PrefetchService {
  public:
   TestingPrefetchService() = default;
 
+  OfflineMetricsCollector* GetOfflineMetricsCollector() override {
+    return nullptr;
+  }
+  PrefetchDispatcher* GetPrefetchDispatcher() override { return &dispatcher; }
+  PrefetchGCMHandler* GetPrefetchGCMHandler() override { return nullptr; }
+  PrefetchStore* GetPrefetchStore() override { return nullptr; }
   void ObserveContentSuggestionsService(
       ntp_snippets::ContentSuggestionsService* content_suggestions_service)
       override {}
-  PrefetchDispatcher* GetDispatcher() override { return &dispatcher; };
-  OfflineMetricsCollector* GetOfflineMetricsCollector() override {
-    return nullptr;
-  }
-  PrefetchGCMHandler* GetPrefetchGCMHandler() override { return nullptr; }
 
   TestingPrefetchDispatcher dispatcher;
 };
+
 }  // namespace
 
 class OfflinePageSuggestedArticlesObserverTest : public testing::Test {
  public:
   OfflinePageSuggestedArticlesObserverTest() = default;
 
   void SetUp() override {
     observer_ = base::MakeUnique<SuggestedArticlesObserver>(
         nullptr, test_prefetch_service());
   }
@@ skipping 61 matching lines @@
       ContentSuggestionFromTestURL(test_url_1));
   observer()->OnCategoryStatusChanged(category,
                                       ntp_snippets::CategoryStatus::AVAILABLE);
   observer()->OnNewSuggestions(category);
   ASSERT_EQ(1U, test_prefetch_dispatcher()->latest_prefetch_urls.size());
 
   observer()->OnSuggestionInvalidated(
       ntp_snippets::ContentSuggestion::ID(category, test_url_1.spec()));
 
   EXPECT_EQ(1, test_prefetch_dispatcher()->remove_by_client_id_count);
-  EXPECT_EQ(ClientId(kSuggestedArticlesNamespace, test_url_1.spec()),
-            *test_prefetch_dispatcher()->last_removed_client_id);
+  EXPECT_EQ(test_url_1.spec(),
+            test_prefetch_dispatcher()->last_removed_client_id.id);
+  EXPECT_EQ(
+      kSuggestedArticlesNamespace,
+      test_prefetch_dispatcher()->latest_prefetch_urls[0].client_id.name_space);
 }
 
 }  // namespace offline_pages