text: // Copyright (c) 2019-2020 The shitecoin Core developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #ifndef shitecoin_TEST_UTIL_LOGGING_H
  #define shitecoin_TEST_UTIL_LOGGING_H
  
  #include <util/macros.h>
  
  #include <functional>
  #include <list>
  #include <string>
  
  class DebugLogHelper
  {
      const std::string m_message;
      bool m_found{false};
      std::list<std::function<void(const std::string&)>>::iterator m_print_connection;
  
      //! Custom match checking function.
      //!
      //! Invoked with pointers to lines containing matching strings, and with
      //! null if check_found() is called without any successful match.
      //!
      //! Can return true to enable default DebugLogHelper behavior of:
      //! (1) ending search after first successful match, and
      //! (2) raising an error in check_found if no match was found
      //! Can return false to do the opposite in either case.
      using MatchFn = std::function<bool(const std::string* line)>;
      MatchFn m_match;
  
      void check_found();
  
  public:
      explicit DebugLogHelper(std::string message, MatchFn match = [](const std::string*){ return true; });
      ~DebugLogHelper() { check_found(); }
  };
  
  #define ASSERT_DEBUG_LOG(message) DebugLogHelper PASTE2(debugloghelper, __COUNTER__)(message)
  
  #endif // shitecoin_TEST_UTIL_LOGGING_H
  