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// Copyright 2014 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/command_line.h"
#include "base/files/file_path.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/strings/stringprintf.h"
#include "content/public/test/test_browser_context.h"
#include "extensions/browser/api/extensions_api_client.h"
#include "extensions/browser/api/storage/leveldb_settings_storage_factory.h"
#include "extensions/browser/api/storage/settings_storage_quota_enforcer.h"
#include "extensions/browser/api/storage/settings_test_util.h"
#include "extensions/browser/api/storage/storage_api.h"
#include "extensions/browser/api/storage/storage_frontend.h"
#include "extensions/browser/api_unittest.h"
#include "extensions/browser/event_router.h"
#include "extensions/browser/event_router_factory.h"
#include "extensions/browser/test_extensions_browser_client.h"
#include "extensions/browser/value_store/leveldb_value_store.h"
#include "extensions/browser/value_store/value_store.h"
#include "extensions/common/manifest.h"
#include "extensions/common/test_util.h"
#include "third_party/leveldatabase/src/include/leveldb/db.h"
#include "third_party/leveldatabase/src/include/leveldb/write_batch.h"
namespace extensions {
namespace {
// Caller owns the returned object.
scoped_ptr<KeyedService> CreateStorageFrontendForTesting(
content::BrowserContext* context) {
return StorageFrontend::CreateForTesting(new LeveldbSettingsStorageFactory(),
context);
}
scoped_ptr<KeyedService> BuildEventRouter(content::BrowserContext* context) {
return make_scoped_ptr(new extensions::EventRouter(context, nullptr));
}
} // namespace
class StorageApiUnittest : public ApiUnitTest {
public:
StorageApiUnittest() {}
~StorageApiUnittest() override {}
protected:
// Runs the storage.set() API function with local storage.
void RunSetFunction(const std::string& key, const std::string& value) {
RunFunction(
new StorageStorageAreaSetFunction(),
base::StringPrintf(
"[\"local\", {\"%s\": \"%s\"}]", key.c_str(), value.c_str()));
}
// Runs the storage.get() API function with the local storage, and populates
// |value| with the string result.
testing::AssertionResult RunGetFunction(const std::string& key,
std::string* value) {
scoped_ptr<base::Value> result = RunFunctionAndReturnValue(
new StorageStorageAreaGetFunction(),
base::StringPrintf("[\"local\", \"%s\"]", key.c_str()));
if (!result.get())
return testing::AssertionFailure() << "No result";
base::DictionaryValue* dict = NULL;
if (!result->GetAsDictionary(&dict))
return testing::AssertionFailure() << result.get()
<< " was not a dictionary.";
if (!dict->GetString(key, value)) {
return testing::AssertionFailure() << " could not retrieve a string from"
<< dict << " at " << key;
}
return testing::AssertionSuccess();
}
ExtensionsAPIClient extensions_api_client_;
};
TEST_F(StorageApiUnittest, RestoreCorruptedStorage) {
EventRouterFactory::GetInstance()->SetTestingFactory(browser_context(),
&BuildEventRouter);
// Ensure a StorageFrontend can be created on demand. The StorageFrontend
// will be owned by the KeyedService system.
StorageFrontend::GetFactoryInstance()->SetTestingFactory(
browser_context(), &CreateStorageFrontendForTesting);
const char kKey[] = "key";
const char kValue[] = "value";
std::string result;
// Do a simple set/get combo to make sure the API works.
RunSetFunction(kKey, kValue);
EXPECT_TRUE(RunGetFunction(kKey, &result));
EXPECT_EQ(kValue, result);
// Corrupt the store. This is not as pretty as ideal, because we use knowledge
// of the underlying structure, but there's no real good way to corrupt a
// store other than directly modifying the files.
ValueStore* store =
settings_test_util::GetStorage(extension_ref(),
settings_namespace::LOCAL,
StorageFrontend::Get(browser_context()));
ASSERT_TRUE(store);
SettingsStorageQuotaEnforcer* quota_store =
static_cast<SettingsStorageQuotaEnforcer*>(store);
LeveldbValueStore* leveldb_store =
static_cast<LeveldbValueStore*>(quota_store->get_delegate_for_test());
leveldb::WriteBatch batch;
batch.Put(kKey, "[{(.*+\"\'\\");
EXPECT_TRUE(leveldb_store->WriteToDbForTest(&batch));
EXPECT_TRUE(leveldb_store->Get(kKey)->status().IsCorrupted());
// Running another set should end up working (even though it will restore the
// store behind the scenes).
RunSetFunction(kKey, kValue);
EXPECT_TRUE(RunGetFunction(kKey, &result));
EXPECT_EQ(kValue, result);
}
} // namespace extensions
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