public void TestTradingDayCache_IsOpen() { CacheUtils_TradingDay cache = GetTradingDayCache(); Assert.IsFalse(cache.IsTrade(19900101)); Assert.IsTrue(cache.IsTrade(20100201)); Assert.IsFalse(cache.IsTrade(20100206)); Assert.IsFalse(cache.IsTrade(20170101)); }