Add Store+Sync to reading list.

ios/chrome/browser/reading_list/reading_list_model_unittest.cc

 // Copyright 2016 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 "base/bind.h"
+#include "base/memory/ptr_util.h"
 #include "ios/chrome/browser/reading_list/reading_list_model_impl.h"
+#include "ios/chrome/browser/reading_list/reading_list_model_storage.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
 
 const GURL callback_url("http://example.com");
 const std::string callback_title("test title");
 
+class TestReadingListStorageObserver {
+ public:
+  virtual void ReadingListDidSaveEntry() = 0;
+  virtual void ReadingListDidRemoveEntry() = 0;
+  virtual void ReadingListDidSaveEntryFromSync() = 0;
+  virtual void ReadingListDidRemoveEntryFromSync() = 0;
+};
+
+class TestReadingListStorage : public ReadingListModelStorage {
+ public:
+  TestReadingListStorage(TestReadingListStorageObserver* observer)
+      : read_(new std::vector<ReadingListEntry>()),
+        unread_(new std::vector<ReadingListEntry>()),
+        observer_(observer) {}
+
+  void AddSampleEntries() {
+    ReadingListEntry read_a(GURL("http://read_a.com"), "read_a");
+    ReadingListEntry read_b(GURL("http://read_b.com"), "read_b");
+    ReadingListEntry read_c(GURL("http://read_c.com"), "read_c");
+    read_->push_back(std::move(read_c));
+    read_->push_back(std::move(read_a));
+    read_->push_back(std::move(read_b));
+    ReadingListEntry unread_a(GURL("http://unread_a.com"), "unread_a");
+    ReadingListEntry unread_b(GURL("http://unread_b.com"), "unread_b");
+    ReadingListEntry unread_c(GURL("http://unread_c.com"), "unread_c");
+    ReadingListEntry unread_d(GURL("http://unread_d.com"), "unread_d");
+    unread_->push_back(std::move(unread_a));
+    unread_->push_back(std::move(unread_d));
+    unread_->push_back(std::move(unread_c));
+    unread_->push_back(std::move(unread_b));
+  }
+
+  void SetReadingListModel(ReadingListModelImpl* model) override {
+    model->ModelLoaded(std::move(unread_), std::move(read_));
+  }
+
+  syncer::ModelTypeService* GetModelTypeService() override { return nullptr; }
+
+  void BeginTransaction() override {}
+
+  void CommitTransaction() override {}
+
+  // Saves or updates an entry. If the entry is not yet in the database, it is
+  // created.
+  void SaveEntry(const ReadingListEntry& entry,
+                 bool read,
+                 bool from_sync) override {
+    if (from_sync) {
+      observer_->ReadingListDidSaveEntryFromSync();
+    } else {
+      observer_->ReadingListDidSaveEntry();
+    }
+  }
+
+  // Removed an entry from the storage.
+  void RemoveEntry(const ReadingListEntry& entry, bool from_sync) override {
+    if (from_sync) {
+      observer_->ReadingListDidRemoveEntryFromSync();
+    } else {
+      observer_->ReadingListDidRemoveEntry();
+    }
+  }
+
+ private:
+  std::unique_ptr<std::vector<ReadingListEntry>> read_;
+  std::unique_ptr<std::vector<ReadingListEntry>> unread_;
+  TestReadingListStorageObserver* observer_;
+};
+
 class ReadingListModelTest : public ReadingListModelObserver,
+                             public TestReadingListStorageObserver,
                              public testing::Test {
  public:
   ReadingListModelTest()
       : callback_called_(false), model_(new ReadingListModelImpl()) {
     ClearCounts();
     model_->AddObserver(this);
   }
   ~ReadingListModelTest() override {}
 
+  void SetStorage(std::unique_ptr<TestReadingListStorage> storage) {
+    model_ =
+        base::MakeUnique<ReadingListModelImpl>(std::move(storage), nullptr);
+    ClearCounts();
+    model_->AddObserver(this);
+  }
+
   void ClearCounts() {
     observer_loaded_ = observer_started_batch_update_ =
         observer_completed_batch_update_ = observer_deleted_ =
             observer_remove_unread_ = observer_remove_read_ = observer_move_ =
                 observer_add_unread_ = observer_add_read_ =
                     observer_update_unread_ = observer_update_read_ =
-                        observer_did_apply_ = 0;
+                        observer_did_apply_ = storage_saved_ =
+                            storage_removed_ = storage_saved_from_sync_ =
+                                storage_removed_from_sync_ = 0;
   }
 
   void AssertObserverCount(int observer_loaded,
                            int observer_started_batch_update,
                            int observer_completed_batch_update,
                            int observer_deleted,
                            int observer_remove_unread,
                            int observer_remove_read,
                            int observer_move,
                            int observer_add_unread,
                            int observer_add_read,
                            int observer_update_unread,
                            int observer_update_read,
                            int observer_did_apply) {
     ASSERT_EQ(observer_loaded, observer_loaded_);
     ASSERT_EQ(observer_started_batch_update, observer_started_batch_update_);
     ASSERT_EQ(observer_completed_batch_update,
               observer_completed_batch_update_);
     ASSERT_EQ(observer_deleted, observer_deleted_);
     ASSERT_EQ(observer_remove_unread, observer_remove_unread_);
     ASSERT_EQ(observer_remove_read, observer_remove_read_);
     ASSERT_EQ(observer_move, observer_move_);
     ASSERT_EQ(observer_add_unread, observer_add_unread_);
     ASSERT_EQ(observer_add_read, observer_add_read_);
     ASSERT_EQ(observer_update_unread, observer_update_unread_);
     ASSERT_EQ(observer_update_read, observer_update_read_);
     ASSERT_EQ(observer_did_apply, observer_did_apply_);
   }
 
+  void AssertStorageCount(int storage_saved,
+                          int storage_removed,
+                          int storage_saved_from_sync,
+                          int storage_removed_from_sync) {
+    ASSERT_EQ(storage_saved, storage_saved_);
+    ASSERT_EQ(storage_removed, storage_removed_);
+    ASSERT_EQ(storage_saved_from_sync, storage_saved_from_sync_);
+    ASSERT_EQ(storage_removed_from_sync, storage_removed_from_sync_);
+  }
+
   // ReadingListModelObserver
   void ReadingListModelLoaded(const ReadingListModel* model) override {
     observer_loaded_ += 1;
   }
   void ReadingListModelBeganBatchUpdates(
       const ReadingListModel* model) override {
     observer_started_batch_update_ += 1;
   }
   void ReadingListModelCompletedBatchUpdates(
       const ReadingListModel* model) override {
     observer_completed_batch_update_ += 1;
   }
   void ReadingListModelBeingDeleted(const ReadingListModel* model) override {
     observer_deleted_ += 1;
   }
   void ReadingListWillRemoveUnreadEntry(const ReadingListModel* model,
                                         size_t index) override {
     observer_remove_unread_ += 1;
   }
   void ReadingListWillMoveEntry(const ReadingListModel* model,
-                                size_t index) override {
+                                size_t index,
+                                bool read) override {
     observer_move_ += 1;
   }
   void ReadingListWillRemoveReadEntry(const ReadingListModel* model,
                                       size_t index) override {
     observer_remove_read_ += 1;
   }
   void ReadingListWillAddUnreadEntry(const ReadingListModel* model,
                                      const ReadingListEntry& entry) override {
     observer_add_unread_ += 1;
   }
   void ReadingListWillAddReadEntry(const ReadingListModel* model,
                                    const ReadingListEntry& entry) override {
     observer_add_read_ += 1;
   }
   void ReadingListWillUpdateUnreadEntry(const ReadingListModel* model,
                                         size_t index) override {
     observer_update_unread_ += 1;
   }
   void ReadingListWillUpdateReadEntry(const ReadingListModel* model,
                                       size_t index) override {
     observer_update_read_ += 1;
   }
   void ReadingListDidApplyChanges(ReadingListModel* model) override {
     observer_did_apply_ += 1;
   }
+
+  void ReadingListDidSaveEntry() override { storage_saved_ += 1; }
+  void ReadingListDidRemoveEntry() override { storage_removed_ += 1; }
+  void ReadingListDidSaveEntryFromSync() override {
+    storage_saved_from_sync_ += 1;
+  }
+  void ReadingListDidRemoveEntryFromSync() override {
+    storage_removed_from_sync_ += 1;
+  }
+
   void Callback(const ReadingListEntry& entry) {
     EXPECT_EQ(callback_url, entry.URL());
     EXPECT_EQ(callback_title, entry.Title());
     callback_called_ = true;
   }
 
   bool CallbackCalled() { return callback_called_; }
 
  protected:
   int observer_loaded_;
   int observer_started_batch_update_;
   int observer_completed_batch_update_;
   int observer_deleted_;
   int observer_remove_unread_;
   int observer_remove_read_;
   int observer_move_;
   int observer_add_unread_;
   int observer_add_read_;
   int observer_update_unread_;
   int observer_update_read_;
   int observer_did_apply_;
+  int storage_saved_;
+  int storage_removed_;
+  int storage_saved_from_sync_;
+  int storage_removed_from_sync_;
   bool callback_called_;
 
   std::unique_ptr<ReadingListModelImpl> model_;
 };
 
 TEST_F(ReadingListModelTest, EmptyLoaded) {
   EXPECT_TRUE(model_->loaded());
   AssertObserverCount(1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
   EXPECT_EQ(0ul, model_->unread_size());
   EXPECT_EQ(0ul, model_->read_size());
   model_->Shutdown();
   EXPECT_FALSE(model_->loaded());
   AssertObserverCount(1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0);
 }
 
+TEST_F(ReadingListModelTest, ModelLoaded) {
+  ClearCounts();
+  auto storage = base::MakeUnique<TestReadingListStorage>(this);
+  storage->AddSampleEntries();
+  SetStorage(std::move(storage));
+
+  AssertObserverCount(1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
+  EXPECT_EQ(model_->read_size(), 3u);
+  EXPECT_EQ(model_->GetReadEntryAtIndex(0).Title(), "read_c");
+  EXPECT_EQ(model_->GetReadEntryAtIndex(1).Title(), "read_b");
+  EXPECT_EQ(model_->GetReadEntryAtIndex(2).Title(), "read_a");
+
+  EXPECT_EQ(model_->unread_size(), 4u);
+  EXPECT_EQ(model_->GetUnreadEntryAtIndex(0).Title(), "unread_d");
+  EXPECT_EQ(model_->GetUnreadEntryAtIndex(1).Title(), "unread_c");
+  EXPECT_EQ(model_->GetUnreadEntryAtIndex(2).Title(), "unread_b");
+  EXPECT_EQ(model_->GetUnreadEntryAtIndex(3).Title(), "unread_a");
+}
+
 TEST_F(ReadingListModelTest, AddEntry) {
+  auto storage = base::MakeUnique<TestReadingListStorage>(this);
+  SetStorage(std::move(storage));
   ClearCounts();
+
   const ReadingListEntry& entry =
       model_->AddEntry(GURL("http://example.com"), "sample");
   EXPECT_EQ(GURL("http://example.com"), entry.URL());
   EXPECT_EQ("sample", entry.Title());
 
   AssertObserverCount(0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1);
+  AssertStorageCount(1, 0, 0, 0);
   EXPECT_EQ(1ul, model_->unread_size());
   EXPECT_EQ(0ul, model_->read_size());
   EXPECT_TRUE(model_->HasUnseenEntries());
 
   const ReadingListEntry& other_entry = model_->GetUnreadEntryAtIndex(0);
   EXPECT_EQ(GURL("http://example.com"), other_entry.URL());
   EXPECT_EQ("sample", other_entry.Title());
 }
 
+TEST_F(ReadingListModelTest, SyncAddEntry) {
+  auto storage = base::MakeUnique<TestReadingListStorage>(this);
+  SetStorage(std::move(storage));
+  auto entry =
+      base::MakeUnique<ReadingListEntry>(GURL("http://example.com"), "sample");
+  ClearCounts();
+  model_->AddEntry(GURL("http://example.com"), "sample");
+  model_->MarkReadByURL(GURL("http://example.com"));
+
+  AssertObserverCount(0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 2);
+  AssertStorageCount(2, 0, 0, 0);
+  ASSERT_EQ(model_->unread_size(), 0u);
+  ASSERT_EQ(model_->read_size(), 1u);
+  ClearCounts();
+
+  // This entry is older, it should not replace the old one.
+  model_->SyncAddEntry(std::move(entry), false);
+  AssertObserverCount(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
+  AssertStorageCount(0, 0, 0, 0);
+  ASSERT_EQ(model_->unread_size(), 0u);
+  ASSERT_EQ(model_->read_size(), 1u);
+  ClearCounts();
+
+  entry =
+      base::MakeUnique<ReadingListEntry>(GURL("http://example.com"), "sample");
+  // This entry is newer, it should replace the old one and mark it unread.
+  model_->SyncAddEntry(std::move(entry), false);
+  AssertObserverCount(0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
+  AssertStorageCount(0, 0, 1, 0);
+  ASSERT_EQ(model_->unread_size(), 1u);
+  ASSERT_EQ(model_->read_size(), 0u);
+  ClearCounts();
+
+  entry =
+      base::MakeUnique<ReadingListEntry>(GURL("http://example.com"), "sample");
+  // This entry is newer, it should replace the old one and mark it read.
+  model_->SyncAddEntry(std::move(entry), true);
+  AssertObserverCount(0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
+  AssertStorageCount(0, 0, 1, 0);
+  ASSERT_EQ(model_->unread_size(), 0u);
+  ASSERT_EQ(model_->read_size(), 1u);
+}
+
+TEST_F(ReadingListModelTest, RemoveEntryByUrl) {
+  auto storage = base::MakeUnique<TestReadingListStorage>(this);
+  SetStorage(std::move(storage));
+  model_->AddEntry(GURL("http://example.com"), "sample");
+  ClearCounts();
+  EXPECT_NE(model_->GetEntryFromURL(GURL("http://example.com")), nullptr);
+  EXPECT_EQ(model_->unread_size(), 1u);
+  model_->RemoveEntryByURL(GURL("http://example.com"));
+  AssertObserverCount(0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1);
+  AssertStorageCount(0, 1, 0, 0);
+  EXPECT_EQ(model_->unread_size(), 0u);
+  EXPECT_EQ(model_->GetEntryFromURL(GURL("http://example.com")), nullptr);
+
+  model_->AddEntry(GURL("http://example.com"), "sample");
+  model_->MarkReadByURL(GURL("http://example.com"));
+  ClearCounts();
+  EXPECT_NE(model_->GetEntryFromURL(GURL("http://example.com")), nullptr);
+  EXPECT_EQ(model_->read_size(), 1u);
+  model_->RemoveEntryByURL(GURL("http://example.com"));
+  AssertObserverCount(0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1);
+  AssertStorageCount(0, 1, 0, 0);
+  EXPECT_EQ(model_->read_size(), 0u);
+  EXPECT_EQ(model_->GetEntryFromURL(GURL("http://example.com")), nullptr);
+}
+
+TEST_F(ReadingListModelTest, RemoveSyncEntryByUrl) {
+  auto storage = base::MakeUnique<TestReadingListStorage>(this);
+  SetStorage(std::move(storage));
+  model_->AddEntry(GURL("http://example.com"), "sample");
+  ClearCounts();
+  EXPECT_NE(model_->GetEntryFromURL(GURL("http://example.com")), nullptr);
+  EXPECT_EQ(model_->unread_size(), 1u);
+  model_->SyncRemoveEntry(GURL("http://example.com"));
+  AssertObserverCount(0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1);
+  AssertStorageCount(0, 0, 0, 1);
+  EXPECT_EQ(model_->unread_size(), 0u);
+  EXPECT_EQ(model_->GetEntryFromURL(GURL("http://example.com")), nullptr);
+
+  model_->AddEntry(GURL("http://example.com"), "sample");
+  model_->MarkReadByURL(GURL("http://example.com"));
+  ClearCounts();
+  EXPECT_NE(model_->GetEntryFromURL(GURL("http://example.com")), nullptr);
+  EXPECT_EQ(model_->read_size(), 1u);
+  model_->SyncRemoveEntry(GURL("http://example.com"));
+  AssertObserverCount(0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1);
+  AssertStorageCount(0, 0, 0, 1);
+  EXPECT_EQ(model_->read_size(), 0u);
+  EXPECT_EQ(model_->GetEntryFromURL(GURL("http://example.com")), nullptr);
+}
+
 TEST_F(ReadingListModelTest, ReadEntry) {
   model_->AddEntry(GURL("http://example.com"), "sample");
 
   ClearCounts();
   model_->MarkReadByURL(GURL("http://example.com"));
   AssertObserverCount(0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
   EXPECT_EQ(0ul, model_->unread_size());
   EXPECT_EQ(1ul, model_->read_size());
   EXPECT_FALSE(model_->HasUnseenEntries());
 
@@ skipping 206 matching lines @@
 }
 
 // Tests that ReadingListModel calls CallbackModelBeingDeleted when destroyed.
 TEST_F(ReadingListModelTest, CallbackModelBeingDeleted) {
   AssertObserverCount(1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
   model_.reset();
   AssertObserverCount(1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0);
 }
 
 }  // namespace