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#include "app/system.h"
#include "app/system_linux.h"
#include <gtest/gtest.h>
TEST(SystemLinuxTest, TimeStampDiff)
{
const long long SEC = 1000000000;
SystemTimeStamp before, after;
before.clockTime.tv_sec = 1;
before.clockTime.tv_nsec = 100;
after.clockTime.tv_sec = 1;
after.clockTime.tv_nsec = 900;
long long tDiff = TimeStampExactDiff_Linux(&before, &after);
EXPECT_EQ( 800, tDiff);
tDiff = TimeStampExactDiff_Linux(&after, &before);
EXPECT_EQ(-800, tDiff);
// -------
before.clockTime.tv_sec = 2;
before.clockTime.tv_nsec = 200;
after.clockTime.tv_sec = 3;
after.clockTime.tv_nsec = 500;
tDiff = TimeStampExactDiff_Linux(&before, &after);
EXPECT_EQ( SEC + 300, tDiff);
tDiff = TimeStampExactDiff_Linux(&after, &before);
EXPECT_EQ(-SEC - 300, tDiff);
// -------
before.clockTime.tv_sec = 3;
before.clockTime.tv_nsec = 200;
after.clockTime.tv_sec = 4;
after.clockTime.tv_nsec = 100;
tDiff = TimeStampExactDiff_Linux(&before, &after);
EXPECT_EQ( SEC - 100, tDiff);
tDiff = TimeStampExactDiff_Linux(&after, &before);
EXPECT_EQ(-SEC + 100, tDiff);
}
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