cpp-logger/test/logger_test.cxx

//
//  logger_test.cxx
//  logger
//
//  Created by Sam Jaffe on 3/31/19.
//

#include <gmock/gmock.h>

#include "logger/logger.hpp"

struct MockLoggerImpl : public logging::logger_impl {
  MOCK_METHOD0(flush, void());
  MOCK_METHOD1(write, void(logging::logpacket const &));
};

struct LoggerTest : public testing::Test {
  static void SetUpTestCase();
  static void TearDownTestCase();
  void SetUp() override;
  void TearDown() override;

  static std::unique_ptr<MockLoggerImpl> pimpl;
};
std::unique_ptr<MockLoggerImpl> LoggerTest::pimpl{};

using namespace logging;
void LoggerTest::SetUpTestCase() {
  _binding bind([]() -> logger_impl& {
    return *pimpl;
  });
  bind_logger_impl(bind);
}

void LoggerTest::SetUp() {
  pimpl.reset(new MockLoggerImpl);
}

void LoggerTest::TearDown() {
  pimpl.reset();
}

TEST_F(LoggerTest, ImplCannotBeMadeTwice) {
  EXPECT_ANY_THROW(bind_logger_impl(nullptr));
}

TEST_F(LoggerTest, LogsWithBraceFmtCode) {
  using testing::Field;
  EXPECT_CALL(*pimpl, write(Field(&logpacket::message, "5"))).Times(1);
  logger & LOG = logger::instance( );
  LOG.log(LERROR, "{}", 5);
}