logging_custom_handler.cpp

// Copyright (c) 2012 A. Joel Lamotte <mjklaim@gmail.com>
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)

#include <string>
#include <sstream>

#include <gtest/gtest.h>

#include <network/logging/logging.hpp>

using namespace network::logging;

TEST(logging_custom_handler, custom_log_handler_output) {

  std::stringstream log_output;
  auto custom_log_handler = [&](const log_record & log) {
    log_output << "[CPPNETLIB]<" << log.filename() << ":" << log.line() << "> "
               << log.message();
  }
  ;

  const auto line_num = 42;
  const auto file_name = "somewhere.cpp";
  const auto message = "At line " + std::to_string(line_num) +
                       " we check the code.";

  set_log_record_handler(custom_log_handler);
  log(log_record(file_name, line_num) << "At line " << line_num
                                      << " we check the code.");

  const auto result_output = log_output.str();

  ASSERT_TRUE(!result_output.empty());
  ASSERT_TRUE(result_output == "[CPPNETLIB]<somewhere.cpp:42> " + message);
}