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/*
* Copyright (C) 2017-2020 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#include "shared/source/utilities/timer_util.h"
#include "test.h"
#include "gtest/gtest.h"
#include <algorithm>
using namespace NEO;
TEST(TimerTest, WhenStartingEndingTimerThenDeltaInExpectedRange) {
Timer::setFreq();
Timer timer;
auto loopCount = 100u;
unsigned long long maxDelta = 0;
unsigned long long minDelta = -1;
while (loopCount--) {
timer.start();
timer.end();
unsigned long long currentDelta = timer.get();
maxDelta = std::max(currentDelta, maxDelta);
minDelta = std::min(currentDelta, minDelta);
}
EXPECT_LE(minDelta, 10000u);
//thread switch may cost up to 2s
EXPECT_LE(maxDelta, 2000000000u);
}
TEST(TimerTest, WhenGettingStartEndThenEndIsAfterStart) {
Timer::setFreq();
Timer timer;
timer.start();
timer.end();
long long start = timer.getStart();
EXPECT_NE(0, start);
long long end = timer.getEnd();
EXPECT_NE(0, end);
EXPECT_GE(end, start);
}
TEST(TimerTest, WhenAssigningTimerThenStartTimeIsCopied) {
Timer::setFreq();
Timer timer1, timer2;
timer1.start();
timer1.end();
timer2 = timer1;
EXPECT_EQ(timer1.getStart(), timer2.getStart());
}
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