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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
 * You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef gtest_utils_h__
#define gtest_utils_h__

#define GTEST_HAS_RTTI 0
#include "gtest/gtest.h"
#include "test_io.h"

namespace nss_test {

// Gtest utilities
class Timeout : public PollTarget {
 public:
  Timeout(int32_t timer_ms) : handle_(nullptr) {
    Poller::Instance()->SetTimer(timer_ms, this, &Timeout::ExpiredCallback,
                                 &handle_);
  }
  ~Timeout() {
    if (handle_) {
      handle_->Cancel();
    }
  }

  static void ExpiredCallback(PollTarget* target, Event event) {
    Timeout* timeout = static_cast<Timeout*>(target);
    timeout->handle_ = nullptr;
  }

  bool timed_out() const { return !handle_; }

 private:
  std::shared_ptr<Poller::Timer> handle_;
};

}  // namespace nss_test

#define WAIT_(expression, timeout) \
  do {                             \
    Timeout tm(timeout);           \
    while (!(expression)) {        \
      Poller::Instance()->Poll();  \
      if (tm.timed_out()) break;   \
    }                              \
  } while (0)

#define ASSERT_TRUE_WAIT(expression, timeout) \
  do {                                        \
    WAIT_(expression, timeout);               \
    ASSERT_TRUE(expression);                  \
  } while (0)

#endif