Unrevert r141537: Add extensions::StateStore and use that instead of

chrome/browser/value_store/caching_value_store_unittest.cc

-// Copyright (c) 2012 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/file_util.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/message_loop.h"
-#include "base/path_service.h"
-#include "base/scoped_temp_dir.h"
-#include "chrome/browser/value_store/caching_value_store.h"
-#include "chrome/common/chrome_paths.h"
-#include "content/public/test/test_browser_thread.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-using content::BrowserThread;
-
-// Test suite for CachingValueStore, using a test database with a few simple
-// entries.
-class CachingValueStoreTest
-    : public testing::Test,
-      public CachingValueStore::Observer {
- public:
-  CachingValueStoreTest()
-      : ui_thread_(BrowserThread::UI, MessageLoop::current()),
-        file_thread_(BrowserThread::FILE, MessageLoop::current()) {
-  }
-
-  virtual void SetUp() {
-    ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
-
-    FilePath test_data_dir;
-    ASSERT_TRUE(PathService::Get(chrome::DIR_TEST_DATA, &test_data_dir));
-    FilePath src_db(test_data_dir.AppendASCII("value_store_db"));
-    db_path_ = temp_dir_.path().AppendASCII("temp_db");
-    file_util::CopyDirectory(src_db, db_path_, true);
-
-    ResetStorage();
-  }
-
-  virtual void TearDown() {
-    MessageLoop::current()->RunAllPending();  // wait for storage to delete
-    storage_->RemoveObserver(this);
-    storage_.reset();
-  }
-
-  // CachingValueStore::Observer
-  virtual void OnInitializationComplete() {
-    MessageLoop::current()->Quit();
-  }
-
-  // Reset the value store, reloading the DB from disk.
-  void ResetStorage() {
-    if (storage_.get())
-      storage_->RemoveObserver(this);
-    storage_.reset(new CachingValueStore(db_path_));
-    storage_->AddObserver(this);
-    MessageLoop::current()->Run();  // wait for OnInitializationComplete
-  }
-
- protected:
-  scoped_ptr<CachingValueStore> storage_;
-  ScopedTempDir temp_dir_;
-  FilePath db_path_;
-  MessageLoop message_loop_;
-  content::TestBrowserThread ui_thread_;
-  content::TestBrowserThread file_thread_;
-};
-
-TEST_F(CachingValueStoreTest, GetExistingData) {
-  const base::Value* value = NULL;
-  ASSERT_FALSE(storage_->Get("key0", &value));
-
-  // Test existing keys in the DB.
-  {
-    ASSERT_TRUE(storage_->Get("key1", &value));
-    std::string result;
-    ASSERT_TRUE(value->GetAsString(&result));
-    EXPECT_EQ("value1", result);
-  }
-
-  {
-    ASSERT_TRUE(storage_->Get("key2", &value));
-    int result;
-    ASSERT_TRUE(value->GetAsInteger(&result));
-    EXPECT_EQ(2, result);
-  }
-}
-
-TEST_F(CachingValueStoreTest, ChangesPersistAfterReload) {
-  storage_->Set("key0", base::Value::CreateIntegerValue(0));
-  storage_->Set("key1", base::Value::CreateStringValue("new1"));
-  storage_->Remove("key2");
-
-  // Reload the DB and test our changes.
-  ResetStorage();
-
-  const base::Value* value = NULL;
-  {
-    ASSERT_TRUE(storage_->Get("key0", &value));
-    int result;
-    ASSERT_TRUE(value->GetAsInteger(&result));
-    EXPECT_EQ(0, result);
-  }
-
-  {
-    ASSERT_TRUE(storage_->Get("key1", &value));
-    std::string result;
-    ASSERT_TRUE(value->GetAsString(&result));
-    EXPECT_EQ("new1", result);
-  }
-
-  ASSERT_FALSE(storage_->Get("key2", &value));
-}