chromium/third_party/abseil-cpp/absl/time/clock_test.cc

// Copyright 2017 The Abseil Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "absl/time/clock.h"

#include "absl/base/config.h"
#if defined(ABSL_HAVE_ALARM)
#include <signal.h>
#include <unistd.h>
#ifdef _AIX
// sig_t is not defined in AIX.
typedef void (*sig_t)(int);
#endif
#elif defined(__linux__) || defined(__APPLE__)
#error all known Linux and Apple targets have alarm
#endif

#include "gtest/gtest.h"
#include "absl/time/time.h"

namespace {

TEST(Time, Now) { … }

enum class AlarmPolicy { … };

#if defined(ABSL_HAVE_ALARM)
bool alarm_handler_invoked = …;

void AlarmHandler(int signo) { … }
#endif

// Does SleepFor(d) take between lower_bound and upper_bound at least
// once between now and (now + timeout)?  If requested (and supported),
// add an alarm for the middle of the sleep period and expect it to fire.
bool SleepForBounded(absl::Duration d, absl::Duration lower_bound,
                     absl::Duration upper_bound, absl::Duration timeout,
                     AlarmPolicy alarm_policy, int* attempts) { … }

testing::AssertionResult AssertSleepForBounded(absl::Duration d,
                                               absl::Duration early,
                                               absl::Duration late,
                                               absl::Duration timeout,
                                               AlarmPolicy alarm_policy) { … }

// Tests that SleepFor() returns neither too early nor too late.
TEST(SleepFor, Bounded) { … }

}  // namespace