/* * This file is part of the Colobot: Gold Edition source code * Copyright (C) 2018, Daniel Roux, EPSITEC SA & TerranovaTeam * http://epsitec.ch; http://colobot.info; http://github.com/colobot * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * See the GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see http://gnu.org/licenses */ #include "common/system/system_other.h" #include struct SystemTest : ::testing::Test { CSystemUtilsOther system; }; TEST_F(SystemTest, TimeStampExactDiff) { auto epoch = SystemTimeStamp{}; EXPECT_EQ(system.TimeStampExactDiff(epoch, epoch), 0); auto duration = std::chrono::microseconds{123456789L}; auto before = std::chrono::high_resolution_clock::now(); auto after = before + duration; EXPECT_EQ(system.TimeStampExactDiff(before, after), std::chrono::nanoseconds{duration}.count()); EXPECT_EQ(system.TimeStampExactDiff(after, before), -std::chrono::nanoseconds{duration}.count()); } constexpr auto TIMESTAMP_START = SystemTimeStamp{std::chrono::nanoseconds{300}}; constexpr auto TIMESTAMP_MID = SystemTimeStamp{std::chrono::nanoseconds{600}}; constexpr auto TIMESTAMP_END = SystemTimeStamp{std::chrono::nanoseconds{900}}; constexpr auto LERP_PARAM_ZERO = 0.0f; constexpr auto LERP_PARAM_HALF = 0.5f; constexpr auto LERP_PARAM_ONE = 1.0f; TEST_F(SystemTest, TimeStampLerpReturnsStartWhenLerpParameterIsZero) { EXPECT_EQ(TIMESTAMP_START, system.TimeStampLerp(TIMESTAMP_START, TIMESTAMP_END, LERP_PARAM_ZERO)); } TEST_F(SystemTest, TimeStampLerpReturnsEndWhenLerpParameterIsOne) { EXPECT_EQ(TIMESTAMP_END, system.TimeStampLerp(TIMESTAMP_START, TIMESTAMP_END, LERP_PARAM_ONE)); } TEST_F(SystemTest, TimeStampLerpReturnsValueBetweenStartAndEndWhenLerpParameterIsBetweenZeroAndOne) { EXPECT_EQ(TIMESTAMP_MID, system.TimeStampLerp(TIMESTAMP_START, TIMESTAMP_END, LERP_PARAM_HALF)); } TEST_F(SystemTest, TimeStampLerpIsMonotonic) { constexpr auto deltaLerpParam = 0.1f; auto earlierTimeStamp = system.TimeStampLerp(TIMESTAMP_START, TIMESTAMP_END, LERP_PARAM_HALF - deltaLerpParam); auto laterTimeStamp = system.TimeStampLerp(TIMESTAMP_START, TIMESTAMP_END, LERP_PARAM_HALF + deltaLerpParam); EXPECT_TRUE(earlierTimeStamp < laterTimeStamp); } TEST_F(SystemTest, TimeStampLerpIsConsistent) { auto timeStamp = TIMESTAMP_START; EXPECT_EQ(timeStamp, system.TimeStampLerp(timeStamp, timeStamp, LERP_PARAM_ZERO)); EXPECT_EQ(timeStamp, system.TimeStampLerp(timeStamp, timeStamp, LERP_PARAM_HALF)); EXPECT_EQ(timeStamp, system.TimeStampLerp(timeStamp, timeStamp, LERP_PARAM_ONE)); }