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56 lines
1.8 KiB
56 lines
1.8 KiB
7 months ago
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// Copyright 2020 The Pigweed Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not
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// use this file except in compliance with the License. You may obtain a copy of
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// the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations under
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// the License.
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#include "pw_chrono/simulated_system_clock.h"
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#include "gtest/gtest.h"
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using namespace std::chrono_literals;
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namespace pw::chrono {
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namespace {
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// We can't control the SystemClock's period configuration, so just in case
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// 42 hours cannot be accurately expressed in integer ticks, round the
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// duration up.
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constexpr SystemClock::duration kRoundedArbitraryDuration =
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SystemClock::for_at_least(42h);
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TEST(SimulatedSystemClock, InitialTime) {
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SimulatedSystemClock clock;
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EXPECT_EQ(SystemClock::time_point(SystemClock::duration(0)), clock.now());
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}
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TEST(SimulatedSystemClock, SetTime) {
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SimulatedSystemClock clock;
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clock.SetTime(pw::chrono::SystemClock::time_point(kRoundedArbitraryDuration));
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EXPECT_EQ(kRoundedArbitraryDuration, clock.now().time_since_epoch());
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}
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TEST(SimulatedSystemClock, AdvanceTime) {
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SimulatedSystemClock clock;
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const SystemClock::time_point before_timestamp = clock.now();
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clock.AdvanceTime(kRoundedArbitraryDuration);
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const SystemClock::time_point after_timestamp = clock.now();
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EXPECT_EQ(kRoundedArbitraryDuration, clock.now().time_since_epoch());
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EXPECT_EQ(kRoundedArbitraryDuration, after_timestamp - before_timestamp);
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}
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} // namespace
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} // namespace pw::chrono
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