chrome/browser/value_store/value_store_frontend_unittest.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/file_util.h"
   6 #include "base/files/scoped_temp_dir.h"
   7 #include "base/memory/scoped_ptr.h"
   8 #include "base/message_loop/message_loop.h"
   9 #include "base/path_service.h"
  10 #include "chrome/browser/value_store/value_store_frontend.h"
  11 #include "chrome/common/chrome_paths.h"
  12 #include "content/public/test/test_browser_thread.h"
  13 #include "testing/gtest/include/gtest/gtest.h"
  14
  15 using content::BrowserThread;
  16
  17 class ValueStoreFrontendTest : public testing::Test {
  18  public:
  19   ValueStoreFrontendTest()
  20       : ui_thread_(BrowserThread::UI, base::MessageLoop::current()),
  21         file_thread_(BrowserThread::FILE, base::MessageLoop::current()) {
  22   }
  23
  24   virtual void SetUp() {
  25     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
  26
  27     base::FilePath test_data_dir;
  28     ASSERT_TRUE(PathService::Get(chrome::DIR_TEST_DATA, &test_data_dir));
  29     base::FilePath src_db(test_data_dir.AppendASCII("value_store_db"));
  30     db_path_ = temp_dir_.path().AppendASCII("temp_db");
  31     base::CopyDirectory(src_db, db_path_, true);
  32
  33     ResetStorage();
  34   }
  35
  36   virtual void TearDown() {
  37     base::MessageLoop::current()->RunUntilIdle();  // wait for storage to delete
  38     storage_.reset();
  39   }
  40
  41   // Reset the value store, reloading the DB from disk.
  42   void ResetStorage() {
  43     storage_.reset(new ValueStoreFrontend(db_path_));
  44   }
  45
  46   bool Get(const std::string& key, scoped_ptr<base::Value>* output) {
  47     storage_->Get(key, base::Bind(&ValueStoreFrontendTest::GetAndWait,
  48                                   base::Unretained(this), output));
  49     base::MessageLoop::current()->Run();  // wait for GetAndWait
  50     return !!output->get();
  51   }
  52
  53  protected:
  54   void GetAndWait(scoped_ptr<base::Value>* output,
  55                   scoped_ptr<base::Value> result) {
  56     *output = result.Pass();
  57     base::MessageLoop::current()->Quit();
  58   }
  59
  60   scoped_ptr<ValueStoreFrontend> storage_;
  61   base::ScopedTempDir temp_dir_;
  62   base::FilePath db_path_;
  63   base::MessageLoop message_loop_;
  64   content::TestBrowserThread ui_thread_;
  65   content::TestBrowserThread file_thread_;
  66 };
  67
  68 TEST_F(ValueStoreFrontendTest, GetExistingData) {
  69   scoped_ptr<base::Value> value;
  70   ASSERT_FALSE(Get("key0", &value));
  71
  72   // Test existing keys in the DB.
  73   {
  74     ASSERT_TRUE(Get("key1", &value));
  75     std::string result;
  76     ASSERT_TRUE(value->GetAsString(&result));
  77     EXPECT_EQ("value1", result);
  78   }
  79
  80   {
  81     ASSERT_TRUE(Get("key2", &value));
  82     int result;
  83     ASSERT_TRUE(value->GetAsInteger(&result));
  84     EXPECT_EQ(2, result);
  85   }
  86 }
  87
  88 TEST_F(ValueStoreFrontendTest, ChangesPersistAfterReload) {
  89   storage_->Set("key0",
  90       scoped_ptr<base::Value>(base::Value::CreateIntegerValue(0)));
  91   storage_->Set("key1",
  92       scoped_ptr<base::Value>(base::Value::CreateStringValue("new1")));
  93   storage_->Remove("key2");
  94
  95   // Reload the DB and test our changes.
  96   ResetStorage();
  97
  98   scoped_ptr<base::Value> value;
  99   {
 100     ASSERT_TRUE(Get("key0", &value));
 101     int result;
 102     ASSERT_TRUE(value->GetAsInteger(&result));
 103     EXPECT_EQ(0, result);
 104   }
 105
 106   {
 107     ASSERT_TRUE(Get("key1", &value));
 108     std::string result;
 109     ASSERT_TRUE(value->GetAsString(&result));
 110     EXPECT_EQ("new1", result);
 111   }
 112
 113   ASSERT_FALSE(Get("key2", &value));
 114 }