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// Copyright 2020 The Pigweed 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
// 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 "pw_chrono/simulated_system_clock.h"
#include "gtest/gtest.h"
using namespace std::chrono_literals;
namespace pw::chrono {
namespace {
// We can't control the SystemClock's period configuration, so just in case
// 42 hours cannot be accurately expressed in integer ticks, round the
// duration up.
constexpr SystemClock::duration kRoundedArbitraryDuration =
TEST(SimulatedSystemClock, InitialTime) {
SimulatedSystemClock clock;
TEST(SimulatedSystemClock, SetTime) {
SimulatedSystemClock clock;
TEST(SimulatedSystemClock, AdvanceTime) {
SimulatedSystemClock clock;
const SystemClock::time_point before_timestamp =;
const SystemClock::time_point after_timestamp =;
EXPECT_EQ(kRoundedArbitraryDuration, after_timestamp - before_timestamp);
} // namespace
} // namespace pw::chrono