Function TEST

test/time_unittest.cc:621–646

#endif  // OS_ANDROID

TEST(TimeTicks, Deltas) {
  for (int index = 0; index < 50; index++) {
    TimeTicks ticks_start = TimeTicks::Now();
    butil::PlatformThread::Sleep(butil::TimeDelta::FromMilliseconds(10));
    TimeTicks ticks_stop = TimeTicks::Now();
    TimeDelta delta = ticks_stop - ticks_start;
    // Note:  Although we asked for a 10ms sleep, if the
    // time clock has a finer granularity than the Sleep()
    // clock, it is quite possible to wakeup early.  Here
    // is how that works:
    //      Time(ms timer)      Time(us timer)
    //          5                   5010
    //          6                   6010
    //          7                   7010
    //          8                   8010
    //          9                   9000
    // Elapsed  4ms                 3990us
    //
    // Unfortunately, our InMilliseconds() function truncates
    // rather than rounds.  We should consider fixing this
    // so that our averages come out better.
    EXPECT_GE(delta.InMilliseconds(), 9);
    EXPECT_GE(delta.InMicroseconds(), 9000);
    EXPECT_EQ(delta.InSeconds(), 0);
  }
}

static void HighResClockTest(TimeTicks (*GetTicks)()) {
#if defined(OS_WIN)