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#ifndef SYNC_TEST_TEST_TRANSACTION_OBSERVER_H_ 6#define SYNC_TEST_TEST_TRANSACTION_OBSERVER_H_ 7 8#include "base/memory/weak_ptr.h" 9#include "sync/internal_api/public/base/model_type.h" 10#include "sync/syncable/transaction_observer.h" 11#include "sync/syncable/write_transaction_info.h" 12 13namespace syncer { 14namespace syncable { 15 16// This class acts as a TransactionObserver for the syncable::Directory. 17// It gathers information that is useful for writing test assertions. 18class TestTransactionObserver : 19 public base::SupportsWeakPtr<TestTransactionObserver>, 20 public TransactionObserver { 21 public: 22 TestTransactionObserver(); 23 virtual ~TestTransactionObserver(); 24 virtual void OnTransactionWrite( 25 const ImmutableWriteTransactionInfo& write_transaction_info, 26 ModelTypeSet models_with_changes) OVERRIDE; 27 28 // Returns the number of transactions observed. 29 // 30 // Transactions are generated only when meaningful changes are made. For most 31 // testing purposes, you may assume that this counts the number of syncer 32 // nudges generated. 33 int transactions_observed(); 34 35 private: 36 DISALLOW_COPY_AND_ASSIGN(TestTransactionObserver); 37 38 int transactions_observed_; 39}; 40 41} // namespace syncable 42} // namespace syncer 43 44 45#endif // SYNC_TEST_TEST_TRANSACTION_OBSERVER_H_ 46