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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.
#ifndef SYNC_TEST_TEST_TRANSACTION_OBSERVER_H_
#define SYNC_TEST_TEST_TRANSACTION_OBSERVER_H_
#include "base/memory/weak_ptr.h"
#include "sync/internal_api/public/base/model_type.h"
#include "sync/syncable/transaction_observer.h"
#include "sync/syncable/write_transaction_info.h"
namespace syncer {
namespace syncable {
// This class acts as a TransactionObserver for the syncable::Directory.
// It gathers information that is useful for writing test assertions.
class TestTransactionObserver :
public base::SupportsWeakPtr<TestTransactionObserver>,
public TransactionObserver {
public:
TestTransactionObserver();
virtual ~TestTransactionObserver();
virtual void OnTransactionWrite(
const ImmutableWriteTransactionInfo& write_transaction_info,
ModelTypeSet models_with_changes) override;
// Returns the number of transactions observed.
//
// Transactions are generated only when meaningful changes are made. For most
// testing purposes, you may assume that this counts the number of syncer
// nudges generated.
int transactions_observed();
private:
DISALLOW_COPY_AND_ASSIGN(TestTransactionObserver);
int transactions_observed_;
};
} // namespace syncable
} // namespace syncer
#endif // SYNC_TEST_TEST_TRANSACTION_OBSERVER_H_
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