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#include "app/system.h"
#include "app/system_windows.h"
#include <gtest/gtest.h>
class CSystemUtilsWindowsWrapper : public CSystemUtilsWindows
{
public:
CSystemUtilsWindowsWrapper() {}
void SetFrequency(long long counterFrequency)
{
m_counterFrequency = counterFrequency;
}
};
class SystemUtilsWindowsUT : public testing::Test
{
protected:
static const long long SEC = 1000000000;
CSystemUtilsWindowsWrapper systemUtils;
};
TEST_F(SystemUtilsWindowsUT, TimerResolution)
{
systemUtils.SetFrequency(SEC);
EXPECT_EQ(1u, systemUtils.GetTimeStampExactResolution());
systemUtils.SetFrequency(SEC/3);
EXPECT_EQ(3u, systemUtils.GetTimeStampExactResolution());
}
TEST_F(SystemUtilsWindowsUT, TimeStampDiff)
{
systemUtils.SetFrequency(SEC);
SystemTimeStamp before, after;
before.counterValue = 100;
after.counterValue = 200;
long long tDiff = systemUtils.TimeStampExactDiff(&before, &after);
EXPECT_EQ( 100, tDiff);
tDiff = systemUtils.TimeStampExactDiff(&after, &before);
EXPECT_EQ(-100, tDiff);
// -------
systemUtils.SetFrequency(SEC/3);
before.counterValue = 200;
after.counterValue = 400;
tDiff = systemUtils.TimeStampExactDiff(&before, &after);
EXPECT_EQ( 200*3, tDiff);
tDiff = systemUtils.TimeStampExactDiff(&after, &before);
EXPECT_EQ(-200*3, tDiff);
}
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