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// 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 <string>
#include "base/memory/scoped_ptr.h"
#include "base/message_loop.h"
#include "base/run_loop.h"
#include "chrome/browser/sync/glue/device_info.h"
#include "chrome/browser/sync/glue/synced_device_tracker.h"
#include "sync/internal_api/public/base/model_type.h"
#include "sync/internal_api/public/test/test_user_share.h"
#include "sync/protocol/sync.pb.h"
#include "sync/syncable/directory.h"
#include "sync/test/test_transaction_observer.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace browser_sync {
class SyncedDeviceTrackerTest : public ::testing::Test {
protected:
SyncedDeviceTrackerTest() : transaction_count_baseline_(0) { }
~SyncedDeviceTrackerTest() { }
void SetUp() {
test_user_share_.SetUp();
syncer::TestUserShare::CreateRoot(syncer::DEVICE_INFO, user_share());
synced_device_tracker_.reset(
new SyncedDeviceTracker(user_share(),
user_share()->directory->cache_guid()));
// We don't actually touch the Profile, so we can get away with passing in a
// NULL here. Constructing a TestingProfile can take over a 100ms, so this
// optimization can be the difference between 'tests run with a noticeable
// delay' and 'tests run instantaneously'.
synced_device_tracker_->Start(NULL, user_share());
}
void TearDown() {
synced_device_tracker_.reset();
test_user_share_.TearDown();
}
syncer::UserShare* user_share() {
return test_user_share_.user_share();
}
// Expose the private method to our tests.
void WriteLocalDeviceInfo(const DeviceInfo& info) {
synced_device_tracker_->WriteLocalDeviceInfo(info);
}
void ResetObservedChangesCounter() {
transaction_count_baseline_ = GetTotalTransactionsCount();
}
int GetObservedChangesCounter() {
return GetTotalTransactionsCount() - transaction_count_baseline_;
}
scoped_ptr<SyncedDeviceTracker> synced_device_tracker_;
private:
// Count of how many closed WriteTransactions notified of meaningful changes.
int GetTotalTransactionsCount() {
base::RunLoop run_loop;
run_loop.RunUntilIdle();
return test_user_share_.transaction_observer()->transactions_observed();
}
MessageLoop message_loop_;
syncer::TestUserShare test_user_share_;
int transaction_count_baseline_;
};
namespace {
// New client scenario: set device info when no previous info existed.
TEST_F(SyncedDeviceTrackerTest, CreateNewDeviceInfo) {
ASSERT_FALSE(synced_device_tracker_->ReadLocalDeviceInfo());
ResetObservedChangesCounter();
DeviceInfo write_device_info(
"Name", "Chromium 3000", "ChromeSyncAgent 3000",
sync_pb::SyncEnums_DeviceType_TYPE_LINUX);
WriteLocalDeviceInfo(write_device_info);
scoped_ptr<DeviceInfo> read_device_info(
synced_device_tracker_->ReadLocalDeviceInfo());
ASSERT_TRUE(read_device_info);
EXPECT_TRUE(write_device_info.Equals(*read_device_info.get()));
EXPECT_EQ(1, GetObservedChangesCounter());
}
// Restart scenario: update existing device info with identical data.
TEST_F(SyncedDeviceTrackerTest, DontModifyExistingDeviceInfo) {
// For writing.
DeviceInfo device_info(
"Name", "XYZ v1", "XYZ SyncAgent v1",
sync_pb::SyncEnums_DeviceType_TYPE_LINUX);
WriteLocalDeviceInfo(device_info);
// First read.
scoped_ptr<DeviceInfo> old_device_info(
synced_device_tracker_->ReadLocalDeviceInfo());
ASSERT_TRUE(old_device_info);
ResetObservedChangesCounter();
// Overwrite the device info with the same data as before.
WriteLocalDeviceInfo(device_info);
// Ensure that this didn't count as a change worth syncing.
EXPECT_EQ(0, GetObservedChangesCounter());
// Second read.
scoped_ptr<DeviceInfo> new_device_info(
synced_device_tracker_->ReadLocalDeviceInfo());
ASSERT_TRUE(new_device_info);
EXPECT_TRUE(old_device_info->Equals(*new_device_info.get()));
}
// Upgrade scenario: update existing device info with new version.
TEST_F(SyncedDeviceTrackerTest, UpdateExistingDeviceInfo) {
// Write v1 device info.
DeviceInfo device_info_v1(
"Name", "XYZ v1", "XYZ SyncAgent v1",
sync_pb::SyncEnums_DeviceType_TYPE_LINUX);
WriteLocalDeviceInfo(device_info_v1);
ResetObservedChangesCounter();
// Write upgraded device info.
DeviceInfo device_info_v2(
"Name", "XYZ v2", "XYZ SyncAgent v2",
sync_pb::SyncEnums_DeviceType_TYPE_LINUX);
WriteLocalDeviceInfo(device_info_v2);
// Verify result.
scoped_ptr<DeviceInfo> result_device_info(
synced_device_tracker_->ReadLocalDeviceInfo());
ASSERT_TRUE(result_device_info);
EXPECT_TRUE(result_device_info->Equals(device_info_v2));
// The update write should have sent a nudge.
EXPECT_EQ(1, GetObservedChangesCounter());
}
} // namespace
} // namespace browser_sync
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