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// Copyright 2011 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/installer/util/registry_key_backup.h"
#include <windows.h>
#include <memory>
#include "base/logging.h"
#include "base/win/registry.h"
#include "chrome/installer/util/registry_test_data.h"
#include "chrome/installer/util/work_item.h"
#include "testing/gtest/include/gtest/gtest.h"
using base::win::RegKey;
class RegistryKeyBackupTest : public testing::Test {
protected:
static void TearDownTestCase() { logging::CloseLogFile(); }
void SetUp() override {
ASSERT_TRUE(test_data_.Initialize(HKEY_CURRENT_USER, L"SOFTWARE\\TmpTmp"));
destination_path_.assign(test_data_.base_path()).append(L"\\Destination");
}
RegistryTestData test_data_;
std::wstring destination_path_;
};
// Test that writing an uninitialized backup does nothing.
TEST_F(RegistryKeyBackupTest, Uninitialized) {
RegistryKeyBackup backup;
EXPECT_TRUE(backup.WriteTo(test_data_.root_key(), destination_path_.c_str(),
WorkItem::kWow64Default));
EXPECT_FALSE(
RegKey(test_data_.root_key(), destination_path_.c_str(), KEY_READ)
.Valid());
}
// Test that initializing a backup with a non-existent key works, and that
// writing it back out does nothing.
TEST_F(RegistryKeyBackupTest, MissingKey) {
std::wstring non_existent_key_path(test_data_.base_path() + L"\\NoKeyHere");
RegistryKeyBackup backup;
EXPECT_TRUE(backup.Initialize(test_data_.root_key(),
non_existent_key_path.c_str(),
WorkItem::kWow64Default));
EXPECT_TRUE(backup.WriteTo(test_data_.root_key(), destination_path_.c_str(),
WorkItem::kWow64Default));
EXPECT_FALSE(
RegKey(test_data_.root_key(), destination_path_.c_str(), KEY_READ)
.Valid());
}
// Test that reading some data then writing it out does the right thing.
TEST_F(RegistryKeyBackupTest, ReadWrite) {
RegistryKeyBackup backup;
EXPECT_TRUE(backup.Initialize(test_data_.root_key(),
test_data_.non_empty_key_path().c_str(),
WorkItem::kWow64Default));
EXPECT_TRUE(backup.WriteTo(test_data_.root_key(), destination_path_.c_str(),
WorkItem::kWow64Default));
test_data_.ExpectMatchesNonEmptyKey(test_data_.root_key(),
destination_path_.c_str());
}
// Test that reading some data, swapping, then writing it out does the right
// thing.
TEST_F(RegistryKeyBackupTest, Swap) {
RegistryKeyBackup backup;
RegistryKeyBackup other_backup;
EXPECT_TRUE(backup.Initialize(test_data_.root_key(),
test_data_.non_empty_key_path().c_str(),
WorkItem::kWow64Default));
backup.swap(other_backup);
EXPECT_TRUE(other_backup.WriteTo(test_data_.root_key(),
destination_path_.c_str(),
WorkItem::kWow64Default));
// Now make sure the one we started with is truly empty.
EXPECT_EQ(ERROR_SUCCESS, RegKey(test_data_.root_key(),
destination_path_.c_str(), KEY_QUERY_VALUE)
.DeleteKey(L""));
EXPECT_TRUE(backup.WriteTo(test_data_.root_key(), destination_path_.c_str(),
WorkItem::kWow64Default));
EXPECT_FALSE(
RegKey(test_data_.root_key(), destination_path_.c_str(), KEY_READ)
.Valid());
}
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