git subrepo clone --branch=20.41.6 git@github.com:ETLCPP/etl.git components/etl
subrepo: subdir: "components/etl" merged: "be5537ec" upstream: origin: "git@github.com:ETLCPP/etl.git" branch: "20.41.6" commit: "be5537ec" git-subrepo: version: "0.4.9" origin: "???" commit: "???"
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components/etl/test/test_chrono_time_point.cpp
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components/etl/test/test_chrono_time_point.cpp
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/******************************************************************************
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The MIT License(MIT)
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Embedded Template Library.
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https://github.com/ETLCPP/etl
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https://www.etlcpp.com
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Documentation:
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Copyright(c) 2025 John Wellbelove
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files(the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions :
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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******************************************************************************/
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#include "etl/platform.h"
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#include "unit_test_framework.h"
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#include "etl/chrono.h"
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#include <vector>
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#include <algorithm>
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// Set to 0 to reference against std::chrono
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#define ETL_USING_ETL_CHRONO 1
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#if ETL_USING_ETL_CHRONO
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#define Chrono etl::chrono
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#else
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#if ETL_USING_CPP20
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#include <chrono>
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#define Chrono std::chrono
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#else
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#error std::chrono not supported
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#endif
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#endif
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namespace
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{
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struct test_clock
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{
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using duration = Chrono::hours;
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};
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using TimePoint = Chrono::time_point<test_clock>;
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SUITE(test_chrono_time_point)
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{
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//*************************************************************************
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TEST(test_default_constructor)
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{
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TimePoint tp;
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CHECK_EQUAL(0, tp.time_since_epoch().count());
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}
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//*************************************************************************
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TEST(test_constructor_with_duration)
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{
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auto num_days = Chrono::days::period::num;
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auto num_hours = Chrono::hours::period::num;
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for (int d = 1; d < 100; ++d)
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{
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TimePoint tp{ Chrono::days(d) };
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auto hours = tp.time_since_epoch().count();
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auto hours_scaled_to_days = (hours * num_hours) / num_days;
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CHECK_EQUAL(d, hours_scaled_to_days);
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}
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}
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//*************************************************************************
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TEST(test_copy_constructor)
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{
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auto num_days = Chrono::days::period::num;
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auto num_hours = Chrono::hours::period::num;
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for (int d = 1; d < 100; ++d)
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{
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TimePoint tp{ Chrono::days(d) };
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TimePoint tp2{ tp };
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auto hours = tp2.time_since_epoch().count();
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auto hours_scaled_to_days = (hours * num_hours) / num_days;
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CHECK_EQUAL(d, hours_scaled_to_days);
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}
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}
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//*************************************************************************
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TEST(test_plus_equal_days)
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{
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auto num_days = Chrono::days::period::num;
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auto num_hours = Chrono::hours::period::num;
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Chrono::days ds(2);
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TimePoint tp{ Chrono::days(0) };
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for (int d = 1; d < 100; ++d)
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{
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tp += ds;
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auto hours = tp.time_since_epoch().count();
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auto hours_scaled_to_days = (hours * num_hours) / num_days;
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CHECK_EQUAL(d * 2, hours_scaled_to_days);
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}
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}
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//*************************************************************************
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TEST(test_plus_equal_hours)
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{
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auto num_days = Chrono::days::period::num;
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auto num_hours = Chrono::hours::period::num;
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Chrono::hours hs(48);
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TimePoint tp{ Chrono::days(0) };
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for (int d = 1; d < 100; ++d)
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{
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tp += hs;
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auto hours = tp.time_since_epoch().count();
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auto hours_scaled_to_days = (hours * num_hours) / num_days;
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CHECK_EQUAL(d * 2, hours_scaled_to_days);
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}
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}
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//*************************************************************************
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TEST(test_minus_equal_days)
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{
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auto num_days = Chrono::days::period::num;
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auto num_hours = Chrono::hours::period::num;
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Chrono::days ds(2);
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TimePoint tp{ Chrono::days(100) };
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for (int d = 1; d < 100; ++d)
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{
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tp -= ds;
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auto hours = tp.time_since_epoch().count();
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auto hours_scaled_to_days = (hours * num_hours) / num_days;
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CHECK_EQUAL(100 - (d * 2), hours_scaled_to_days);
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}
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}
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//*************************************************************************
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TEST(test_minus_equal_hours)
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{
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auto num_days = Chrono::days::period::num;
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auto num_hours = Chrono::hours::period::num;
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Chrono::hours hs(48);
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TimePoint tp{ Chrono::days(100) };
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for (int d = 1; d < 100; ++d)
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{
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tp -= hs;
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auto hours = tp.time_since_epoch().count();
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auto hours_scaled_to_days = (hours * num_hours) / num_days;
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CHECK_EQUAL(100 - (d * 2), hours_scaled_to_days);
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}
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}
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#if ETL_USING_ETL_CHRONO
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//*************************************************************************
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TEST(test_min_max_time_point)
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{
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using Rep = TimePoint::duration::rep;
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CHECK_EQUAL(etl::integral_limits<Rep>::min, TimePoint::min().time_since_epoch().count());
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CHECK_EQUAL(etl::integral_limits<Rep>::max, TimePoint::max().time_since_epoch().count());
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}
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#endif
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//*************************************************************************
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TEST(test_time_point_comparison_operators)
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{
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// 10 days
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TimePoint tp10h{ Chrono::hours(240) };
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TimePoint tp10d{ Chrono::days(10) };
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// 20 days
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TimePoint tp20h{ Chrono::hours(480) };
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TimePoint tp20d{ Chrono::days(20) };
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// ==
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CHECK_TRUE(tp10h == tp10h);
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CHECK_TRUE(tp10d == tp10h);
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CHECK_TRUE(tp10h == tp10d);
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CHECK_FALSE(tp10h == tp20h);
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CHECK_FALSE(tp20h == tp10h);
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CHECK_FALSE(tp10h == tp20d);
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CHECK_FALSE(tp10d == tp20h);
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CHECK_FALSE(tp20h == tp10d);
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CHECK_FALSE(tp20d == tp10h);
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// <
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CHECK_TRUE(tp10h < tp20h);
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CHECK_TRUE(tp10d < tp20h);
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CHECK_TRUE(tp10h < tp20d);
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CHECK_FALSE(tp10h < tp10h);
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CHECK_FALSE(tp10d < tp10h);
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CHECK_FALSE(tp10h < tp10d);
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CHECK_FALSE(tp20h < tp10h);
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CHECK_FALSE(tp20d < tp10h);
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CHECK_FALSE(tp20h < tp10d);
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// <=
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CHECK_TRUE(tp10h <= tp20h);
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CHECK_TRUE(tp10d <= tp20h);
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CHECK_TRUE(tp10h <= tp20d);
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CHECK_TRUE(tp10h <= tp10h);
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CHECK_TRUE(tp10d <= tp10h);
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CHECK_TRUE(tp10h <= tp10d);
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CHECK_FALSE(tp20h <= tp10h);
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CHECK_FALSE(tp20d <= tp10h);
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CHECK_FALSE(tp20h <= tp10d);
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// >
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CHECK_TRUE(tp20h > tp10h);
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CHECK_TRUE(tp20d > tp10h);
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CHECK_TRUE(tp20h > tp10d);
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CHECK_FALSE(tp10h > tp10h);
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CHECK_FALSE(tp10d > tp10h);
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CHECK_FALSE(tp10h > tp10d);
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CHECK_FALSE(tp10h > tp20h);
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CHECK_FALSE(tp10d > tp20h);
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CHECK_FALSE(tp10h > tp20d);
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// >=
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CHECK_TRUE(tp20h >= tp10h);
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CHECK_TRUE(tp20d >= tp10h);
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CHECK_TRUE(tp20h >= tp10d);
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CHECK_TRUE(tp10h >= tp10h);
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CHECK_TRUE(tp10d >= tp10h);
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CHECK_TRUE(tp10h >= tp10d);
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CHECK_FALSE(tp10h >= tp20h);
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CHECK_FALSE(tp10d >= tp20h);
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CHECK_FALSE(tp10h >= tp20d);
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#if ETL_USING_CPP20
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CHECK_TRUE((tp10h <=> tp10h) == 0);
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CHECK_TRUE((tp10h <=> tp20h) < 0);
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CHECK_TRUE((tp20h <=> tp10h) > 0);
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CHECK_TRUE((tp10h <=> tp10d) == 0);
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CHECK_TRUE((tp10d <=> tp20h) < 0);
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CHECK_TRUE((tp20h <=> tp10d) > 0);
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CHECK_TRUE((tp10d <=> tp10h) == 0);
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CHECK_TRUE((tp10h <=> tp20d) < 0);
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CHECK_TRUE((tp20d <=> tp10h) > 0);
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#endif
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}
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//*************************************************************************
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TEST(test_time_point_common_type)
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{
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using TimePointHours = Chrono::time_point<test_clock, Chrono::hours>;
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using TimePointDays = Chrono::time_point<test_clock, Chrono::days>;
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using CommonType = etl::common_type_t<TimePointHours, TimePointDays>;
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CHECK_TRUE((std::is_same<TimePointHours::duration, CommonType::duration>::value));
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CHECK_FALSE((std::is_same<TimePointDays::duration, CommonType::duration>::value));
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}
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//*************************************************************************
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TEST(test_floor)
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{
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using TimePoint = Chrono::time_point<test_clock, Chrono::milliseconds>;
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TimePoint tp(Chrono::milliseconds(1234)); // 1234 milliseconds
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auto floored_tp = floor<Chrono::seconds>(tp);
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CHECK_EQUAL(1, floored_tp.time_since_epoch().count());
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TimePoint negative_tp(Chrono::milliseconds(-1234)); // -1234 milliseconds
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auto floored_negative_tp = floor<Chrono::seconds>(negative_tp);
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CHECK_EQUAL(-2, floored_negative_tp.time_since_epoch().count());
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}
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//*************************************************************************
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TEST(test_ceil)
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{
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using TimePoint = Chrono::time_point<test_clock, Chrono::milliseconds>;
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TimePoint tp(Chrono::milliseconds(1234)); // 1234 milliseconds
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auto ceil_tp = ceil<Chrono::seconds>(tp);
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CHECK_EQUAL(2, ceil_tp.time_since_epoch().count());
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TimePoint negative_tp(Chrono::milliseconds(-1234)); // -1234 milliseconds
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auto ceil_negative_tp = ceil<Chrono::seconds>(negative_tp);
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CHECK_EQUAL(-1, ceil_negative_tp.time_since_epoch().count());
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}
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//*************************************************************************
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TEST(test_round)
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{
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using TimePoint = Chrono::time_point<test_clock, Chrono::milliseconds>;
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TimePoint tp1(Chrono::milliseconds(1500)); // 1500 milliseconds
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auto round1 = round<Chrono::seconds>(tp1); // Round to seconds
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CHECK_EQUAL(2, round1.time_since_epoch().count());
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TimePoint tp2(Chrono::milliseconds(2500)); // 2500 milliseconds
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auto round2 = round<Chrono::seconds>(tp2); // Round to seconds
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CHECK_EQUAL(2, round2.time_since_epoch().count());
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TimePoint tp3(Chrono::milliseconds(-1500)); // -1500 milliseconds
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auto round3 = round<Chrono::seconds>(tp3); // Round to seconds
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CHECK_EQUAL(-2, round3.time_since_epoch().count());
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}
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//*************************************************************************
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TEST(test_time_point_cast)
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{
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using TimePointFrom = Chrono::time_point<test_clock, Chrono::seconds>;
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using TimePointTo = Chrono::time_point<test_clock, Chrono::milliseconds>;
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TimePointFrom from(Chrono::seconds(2));
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TimePointTo to = Chrono::time_point_cast<TimePointTo::duration>(from);
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auto expected = from.time_since_epoch().count() * (TimePointTo::period::den / TimePointFrom::period::den);
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auto actual = to.time_since_epoch().count();
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CHECK_EQUAL(expected, actual);
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}
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};
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}
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