public void TestConvertDateTime()
        {
            var span = new TimeSpan(0, 12, 34, 56, 789);
            int time = 123456;
            int ms = 789;

            int hhmm_____ = 0;
            int ____ssf__ = 0;
            int _______ff = 0;

            var codec = new PbTickCodec();

            codec.SetUpdateTime(span, out hhmm_____, out ____ssf__, out _______ff);
            Assert.AreEqual(1234, hhmm_____);
            Assert.AreEqual(567, ____ssf__);
            Assert.AreEqual(89, _______ff);

            codec.SetUpdateTime(time, ms, out hhmm_____, out ____ssf__, out _______ff);
            Assert.AreEqual(1234, hhmm_____);
            Assert.AreEqual(567, ____ssf__);
            Assert.AreEqual(89, _______ff);

            codec.GetUpdateTime(hhmm_____, ____ssf__, _______ff, out time, out ms);
            Assert.AreEqual(123456, time);
            Assert.AreEqual(789, ms);

            span = codec.GetUpdateTime(hhmm_____, ____ssf__, _______ff);
            Assert.AreEqual(0, span.Days);
            Assert.AreEqual(12, span.Hours);
            Assert.AreEqual(34, span.Minutes);
            Assert.AreEqual(56, span.Seconds);
            Assert.AreEqual(789, span.Milliseconds);

            var date1 = 20141104;
            var date2 = 20141105;

            var tick = new PbTick();
            codec.SetActionDay(tick, new DateTime(2014, 11, 4));
            codec.SetTradingDay(tick, new DateTime(2014, 11, 5));
            Assert.AreEqual(date1, tick.ActionDay);
            Assert.AreEqual(date2, tick.TradingDay);
            Assert.AreEqual(new DateTime(2014, 11, 4), codec.GetDateTime(tick.ActionDay));
            Assert.AreEqual(new DateTime(2014, 11, 5), codec.GetDateTime(tick.TradingDay));
        }