// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.  All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// Author: kenton@google.com (Kenton Varda)
// emulates google3/testing/base/public/googletest.h

#ifndef GOOGLE_PROTOBUF_GOOGLETEST_H__
#define GOOGLE_PROTOBUF_GOOGLETEST_H__

#include <gmock/gmock.h>

#include <map>
#include <vector>

#include "google/protobuf/stubs/common.h"
#include "google/protobuf/stubs/logging.h"

// Disable death tests if we use exceptions in CHECK().
#if !PROTOBUF_USE_EXCEPTIONS && defined(GTEST_HAS_DEATH_TEST) && \
    !GTEST_OS_WINDOWS
#define PROTOBUF_HAS_DEATH_TEST
#endif

namespace google {
namespace protobuf {

// When running unittests, get the directory containing the source code.
std::string TestSourceDir();

// When running unittests, get a directory where temporary files may be
// placed.
std::string TestTempDir();

// Capture all text written to stdout or stderr.
void CaptureTestStdout();
void CaptureTestStderr();

// Stop capturing stdout or stderr and return the text captured.
std::string GetCapturedTestStdout();
std::string GetCapturedTestStderr();

// For use with ScopedMemoryLog::GetMessages().  Inside Google the LogLevel
// constants don't have the LOGLEVEL_ prefix, so the code that used
// ScopedMemoryLog refers to LOGLEVEL_ERROR as just ERROR.
#undef ERROR  // defend against promiscuous windows.h
static const LogLevel ERROR = LOGLEVEL_ERROR;
static const LogLevel WARNING = LOGLEVEL_WARNING;

// Receives copies of all LOG(ERROR) messages while in scope.  Sample usage:
//   {
//     ScopedMemoryLog log;  // constructor registers object as a log sink
//     SomeRoutineThatMayLogMessages();
//     const vector<string>& warnings = log.GetMessages(ERROR);
//   }  // destructor unregisters object as a log sink
// This is a dummy implementation which covers only what is used by protocol
// buffer unit tests.
class ScopedMemoryLog {
 public:
  ScopedMemoryLog();
  ScopedMemoryLog(const ScopedMemoryLog&) = delete;
  ScopedMemoryLog& operator=(const ScopedMemoryLog&) = delete;
  virtual ~ScopedMemoryLog();

  // Fetches all messages with the given severity level.
  const std::vector<std::string>& GetMessages(LogLevel error);

 private:
  std::map<LogLevel, std::vector<std::string> > messages_;
  LogHandler* old_handler_;

  static void HandleLog(LogLevel level, const char* filename, int line,
                        const std::string& message);

  static ScopedMemoryLog* active_log_;
};

}  // namespace protobuf
}  // namespace google

#endif  // GOOGLE_PROTOBUF_GOOGLETEST_H__