1// Copyright (c) 2021-present The Bitcoin Core developers
2// Distributed under the MIT software license, see the accompanying
3// file COPYING or http://www.opensource.org/licenses/mit-license.php.
4
5#ifndef BITCOIN_INTERFACES_ECHO_H
6#define BITCOIN_INTERFACES_ECHO_H
7
8#include <memory>
9#include <string>
10
11namespace interfaces {
12//! Simple string echoing interface for testing.
13class Echo
14{
15public:
16    virtual ~Echo() = default;
17
18    //! Echo provided string.
19    virtual std::string echo(const std::string& echo) = 0;
20};
21
22//! Return implementation of Echo interface.
23std::unique_ptr<Echo> MakeEcho();
24} // namespace interfaces
25
26#endif // BITCOIN_INTERFACES_ECHO_H
27