dateandtimetests.cs

大名鼎鼎的mono是.NET平台的跨平台（支持linux

			Assert.AreEqual(727,DateAndTime.DateDiff(DateInterval.Day, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.Saturday     ,FirstWeekOfYear.System));
			Assert.AreEqual(727,DateAndTime.DateDiff(DateInterval.DayOfYear, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.Saturday     ,FirstWeekOfYear.System));
			Assert.AreEqual(17448,DateAndTime.DateDiff(DateInterval.Hour, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.Saturday     ,FirstWeekOfYear.System));
			Assert.AreEqual(1046880,DateAndTime.DateDiff(DateInterval.Minute, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.Saturday     ,FirstWeekOfYear.System));
			Assert.AreEqual(24,DateAndTime.DateDiff(DateInterval.Month, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.Saturday     ,FirstWeekOfYear.System));
			Assert.AreEqual(8,DateAndTime.DateDiff(DateInterval.Quarter, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.Saturday     ,FirstWeekOfYear.System));
			Assert.AreEqual(62812800,DateAndTime.DateDiff(DateInterval.Second, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.Saturday     ,FirstWeekOfYear.System));
			Assert.AreEqual(103,DateAndTime.DateDiff(DateInterval.Weekday, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.Saturday     ,FirstWeekOfYear.System));			
			Assert.AreEqual(2,DateAndTime.DateDiff(DateInterval.Year, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.Saturday     ,FirstWeekOfYear.System));
		}
		
		[Test]
		public void DateDiff_FirstWeekOfYear_1()
		{
			Assert.AreEqual(727,DateAndTime.DateDiff(DateInterval.Day, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System ,FirstWeekOfYear.Jan1 ));
			Assert.AreEqual(727,DateAndTime.DateDiff(DateInterval.DayOfYear, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System ,FirstWeekOfYear.Jan1 ));
			Assert.AreEqual(17448,DateAndTime.DateDiff(DateInterval.Hour, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System ,FirstWeekOfYear.Jan1 ));
			Assert.AreEqual(1046880,DateAndTime.DateDiff(DateInterval.Minute, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System ,FirstWeekOfYear.Jan1 ));
			Assert.AreEqual(24,DateAndTime.DateDiff(DateInterval.Month, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System ,FirstWeekOfYear.Jan1 ));
			Assert.AreEqual(8,DateAndTime.DateDiff(DateInterval.Quarter, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System ,FirstWeekOfYear.Jan1 ));
			Assert.AreEqual(62812800,DateAndTime.DateDiff(DateInterval.Second, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System ,FirstWeekOfYear.Jan1 ));
			Assert.AreEqual(103,DateAndTime.DateDiff(DateInterval.Weekday, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System ,FirstWeekOfYear.Jan1 ));			
			Assert.AreEqual(2,DateAndTime.DateDiff(DateInterval.Year, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System ,FirstWeekOfYear.Jan1 ));

			Assert.AreEqual(727,DateAndTime.DateDiff(DateInterval.Day, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System ,FirstWeekOfYear.FirstFourDays  ));
			Assert.AreEqual(727,DateAndTime.DateDiff(DateInterval.DayOfYear, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System ,FirstWeekOfYear.FirstFourDays ));
			Assert.AreEqual(17448,DateAndTime.DateDiff(DateInterval.Hour, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System ,FirstWeekOfYear.FirstFourDays  ));
			Assert.AreEqual(1046880,DateAndTime.DateDiff(DateInterval.Minute, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System ,FirstWeekOfYear.FirstFourDays  ));
			Assert.AreEqual(24,DateAndTime.DateDiff(DateInterval.Month, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System ,FirstWeekOfYear.FirstFourDays  ));
			Assert.AreEqual(8,DateAndTime.DateDiff(DateInterval.Quarter, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System ,FirstWeekOfYear.FirstFourDays  ));
			Assert.AreEqual(62812800,DateAndTime.DateDiff(DateInterval.Second, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System ,FirstWeekOfYear.FirstFourDays  ));
			Assert.AreEqual(103,DateAndTime.DateDiff(DateInterval.Weekday, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System ,FirstWeekOfYear.FirstFourDays  ));			
			Assert.AreEqual(2,DateAndTime.DateDiff(DateInterval.Year, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System ,FirstWeekOfYear.FirstFourDays  ));

			Assert.AreEqual(727,DateAndTime.DateDiff(DateInterval.Day, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System ,FirstWeekOfYear.FirstFullWeek   ));
			Assert.AreEqual(727,DateAndTime.DateDiff(DateInterval.DayOfYear, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System ,FirstWeekOfYear.FirstFullWeek  ));
			Assert.AreEqual(17448,DateAndTime.DateDiff(DateInterval.Hour, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System ,FirstWeekOfYear.FirstFullWeek   ));
			Assert.AreEqual(1046880,DateAndTime.DateDiff(DateInterval.Minute, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System ,FirstWeekOfYear.FirstFullWeek   ));
			Assert.AreEqual(24,DateAndTime.DateDiff(DateInterval.Month, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System ,FirstWeekOfYear.FirstFullWeek   ));
			Assert.AreEqual(8,DateAndTime.DateDiff(DateInterval.Quarter, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System ,FirstWeekOfYear.FirstFullWeek   ));
			Assert.AreEqual(62812800,DateAndTime.DateDiff(DateInterval.Second, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System ,FirstWeekOfYear.FirstFullWeek   ));
			Assert.AreEqual(103,DateAndTime.DateDiff(DateInterval.Weekday, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System ,FirstWeekOfYear.FirstFullWeek   ));			
			Assert.AreEqual(2,DateAndTime.DateDiff(DateInterval.Year, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System ,FirstWeekOfYear.FirstFullWeek   ));
		}

		[Test]
		public void DateDiff_DateInterval_WeekOfYear()
		{
			Assert.AreEqual(104,DateAndTime.DateDiff(DateInterval.WeekOfYear, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System,FirstWeekOfYear.System),"1");
			Assert.AreEqual(104,DateAndTime.DateDiff("ww", DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System,FirstWeekOfYear.System),"2");
			Assert.AreEqual(104,DateAndTime.DateDiff(DateInterval.WeekOfYear, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.Sunday,FirstWeekOfYear.System),"3");
			Assert.AreEqual(104,DateAndTime.DateDiff(DateInterval.WeekOfYear, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.Monday,FirstWeekOfYear.System),"4");
			Assert.AreEqual(104,DateAndTime.DateDiff(DateInterval.WeekOfYear, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.Tuesday,FirstWeekOfYear.System));
			Assert.AreEqual(104,DateAndTime.DateDiff(DateInterval.WeekOfYear, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.Wednesday,FirstWeekOfYear.System));
			Assert.AreEqual(104,DateAndTime.DateDiff(DateInterval.WeekOfYear, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.Thursday,FirstWeekOfYear.System));
			Assert.AreEqual(103,DateAndTime.DateDiff(DateInterval.WeekOfYear, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.Friday,FirstWeekOfYear.System));
			Assert.AreEqual(104,DateAndTime.DateDiff(DateInterval.WeekOfYear, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.Saturday,FirstWeekOfYear.System));
			Assert.AreEqual(104,DateAndTime.DateDiff(DateInterval.WeekOfYear, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System,FirstWeekOfYear.Jan1 ));
			Assert.AreEqual(104,DateAndTime.DateDiff(DateInterval.WeekOfYear, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System,FirstWeekOfYear.FirstFourDays  ));
			Assert.AreEqual(104,DateAndTime.DateDiff(DateInterval.WeekOfYear, DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System,FirstWeekOfYear.FirstFullWeek   ));
		}

		[Test]
		[ExpectedException(typeof(ArgumentException))]
		public void DateDiff_1()
		{
			// Argument 'Interval' is not a valid value.
			DateAndTime.DateDiff("k", DateTime.Parse("12/5/03"),DateTime.Parse("12/1/05"),FirstDayOfWeek.System ,FirstWeekOfYear.System );
		}

		[Test]
		[ExpectedException(typeof(InvalidCastException))]
		public void DateDiff_3()
		{
			// Argument 'Date2' cannot be converted to type 'Date'.
			DateAndTime.DateDiff("d", DateTime.Parse("12/5/03"),"12test5/03", (FirstDayOfWeek)8 ,FirstWeekOfYear.System );
		}

		#endregion

		#region DatePart Tests


		[Test]
		public void DatePart () 
		{
			DateTime dtJan4 = new DateTime(2001, 1, 4);

			// TODO: Test this better

			Assert.AreEqual(2001, DateAndTime.DatePart(DateInterval.Year, dtJan4, FirstDayOfWeek.System, FirstWeekOfYear.System),"#DP01");
			Assert.AreEqual(1, DateAndTime.DatePart(DateInterval.Quarter, dtJan4, FirstDayOfWeek.System, FirstWeekOfYear.System),"#DP02");
			Assert.AreEqual(1, DateAndTime.DatePart(DateInterval.Month, dtJan4, FirstDayOfWeek.System, FirstWeekOfYear.System),"#DP03");
			Assert.AreEqual(1, DateAndTime.DatePart(DateInterval.WeekOfYear, dtJan4, FirstDayOfWeek.System, FirstWeekOfYear.FirstFourDays),"#DP04");
			Assert.AreEqual(53, DateAndTime.DatePart(DateInterval.WeekOfYear, dtJan4, FirstDayOfWeek.System, FirstWeekOfYear.FirstFullWeek),"#DP05");
			Assert.AreEqual(1, DateAndTime.DatePart(DateInterval.WeekOfYear, dtJan4, FirstDayOfWeek.System, FirstWeekOfYear.Jan1),"#DP06");
			Assert.AreEqual(1, DateAndTime.DatePart(DateInterval.WeekOfYear, dtJan4, FirstDayOfWeek.System, FirstWeekOfYear.System),"#DP07");
			Assert.AreEqual(7, DateAndTime.DatePart(DateInterval.Weekday, dtJan4, FirstDayOfWeek.Friday, FirstWeekOfYear.FirstFourDays),"#DP08");
			Assert.AreEqual(6, DateAndTime.DatePart(DateInterval.Weekday, dtJan4, FirstDayOfWeek.Saturday, FirstWeekOfYear.FirstFourDays),"#DP09");
			Assert.AreEqual(5, DateAndTime.DatePart(DateInterval.Weekday, dtJan4, FirstDayOfWeek.Sunday, FirstWeekOfYear.FirstFourDays),"#DP10");
			Assert.AreEqual(4, DateAndTime.DatePart(DateInterval.Weekday, dtJan4, FirstDayOfWeek.Monday, FirstWeekOfYear.FirstFourDays),"#DP11");
			Assert.AreEqual(3, DateAndTime.DatePart(DateInterval.Weekday, dtJan4, FirstDayOfWeek.Tuesday, FirstWeekOfYear.FirstFourDays),"#DP12");
			Assert.AreEqual(2, DateAndTime.DatePart(DateInterval.Weekday, dtJan4, FirstDayOfWeek.Wednesday, FirstWeekOfYear.FirstFourDays),"#DP13");
			Assert.AreEqual(1, DateAndTime.DatePart(DateInterval.Weekday, dtJan4, FirstDayOfWeek.Thursday, FirstWeekOfYear.FirstFourDays),"#DP14");
			Assert.AreEqual(5, DateAndTime.DatePart(DateInterval.Weekday, dtJan4, FirstDayOfWeek.System, FirstWeekOfYear.FirstFourDays),"#DP15");


		}


		[Test]
		public void DatePart_DateInterval_1()
		{
			Assert.AreEqual(5,DateAndTime.DatePart(DateInterval.Day, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.System));
			Assert.AreEqual(339,DateAndTime.DatePart(DateInterval.DayOfYear, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.System));
			Assert.AreEqual(15,DateAndTime.DatePart(DateInterval.Hour, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.System));
			Assert.AreEqual(22,DateAndTime.DatePart(DateInterval.Minute, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.System));
			Assert.AreEqual(12,DateAndTime.DatePart(DateInterval.Month, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.System));
			Assert.AreEqual(4,DateAndTime.DatePart(DateInterval.Quarter, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.System));
			Assert.AreEqual(33,DateAndTime.DatePart(DateInterval.Second, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.System));
			Assert.AreEqual(6,DateAndTime.DatePart(DateInterval.Weekday, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.System));
			Assert.AreEqual(49,DateAndTime.DatePart(DateInterval.WeekOfYear, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.System));
			Assert.AreEqual(2003,DateAndTime.DatePart(DateInterval.Year, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.System));
		}

		[Test]
		public void DatePart_String_1()
		{
			Assert.AreEqual(5,DateAndTime.DatePart("d", DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.System));
			Assert.AreEqual(339,DateAndTime.DatePart("y", DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.System));
			Assert.AreEqual(15,DateAndTime.DatePart("h", DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.System));
			Assert.AreEqual(22,DateAndTime.DatePart("n", DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.System));
			Assert.AreEqual(12,DateAndTime.DatePart("m", DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.System));
			Assert.AreEqual(4,DateAndTime.DatePart("q", DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.System));
			Assert.AreEqual(33,DateAndTime.DatePart("s", DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.System));
			Assert.AreEqual(6,DateAndTime.DatePart("w", DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.System));
			Assert.AreEqual(49,DateAndTime.DatePart("ww", DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.System));
			Assert.AreEqual(2003,DateAndTime.DatePart("yyyy", DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.System));
		}

		[Test]
		public void DatePart_FirstDayOfWeek_1()
		{
			Assert.AreEqual(5,DateAndTime.DatePart(DateInterval.Day, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Sunday  ,FirstWeekOfYear.System));
			Assert.AreEqual(339,DateAndTime.DatePart(DateInterval.DayOfYear , DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Sunday  ,FirstWeekOfYear.System));
			Assert.AreEqual(15,DateAndTime.DatePart(DateInterval.Hour, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Sunday  ,FirstWeekOfYear.System));
			Assert.AreEqual(22,DateAndTime.DatePart(DateInterval.Minute, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Sunday  ,FirstWeekOfYear.System));
			Assert.AreEqual(12,DateAndTime.DatePart(DateInterval.Month, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Sunday  ,FirstWeekOfYear.System));
			Assert.AreEqual(4,DateAndTime.DatePart(DateInterval.Quarter, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Sunday  ,FirstWeekOfYear.System));
			Assert.AreEqual(33,DateAndTime.DatePart(DateInterval.Second, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Sunday  ,FirstWeekOfYear.System));
			Assert.AreEqual(6,DateAndTime.DatePart(DateInterval.Weekday, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Sunday  ,FirstWeekOfYear.System));			
			Assert.AreEqual(2003,DateAndTime.DatePart(DateInterval.Year, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Sunday  ,FirstWeekOfYear.System));

			Assert.AreEqual(5,DateAndTime.DatePart(DateInterval.Day, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Monday   ,FirstWeekOfYear.System));
			Assert.AreEqual(339,DateAndTime.DatePart(DateInterval.DayOfYear , DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Monday   ,FirstWeekOfYear.System));
			Assert.AreEqual(15,DateAndTime.DatePart(DateInterval.Hour, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Monday   ,FirstWeekOfYear.System));
			Assert.AreEqual(22,DateAndTime.DatePart(DateInterval.Minute, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Monday   ,FirstWeekOfYear.System));
			Assert.AreEqual(12,DateAndTime.DatePart(DateInterval.Month, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Monday   ,FirstWeekOfYear.System));
			Assert.AreEqual(4,DateAndTime.DatePart(DateInterval.Quarter, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Monday   ,FirstWeekOfYear.System));
			Assert.AreEqual(33,DateAndTime.DatePart(DateInterval.Second, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Monday   ,FirstWeekOfYear.System));
			Assert.AreEqual(5,DateAndTime.DatePart(DateInterval.Weekday, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Monday   ,FirstWeekOfYear.System));			
			Assert.AreEqual(2003,DateAndTime.DatePart(DateInterval.Year, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Monday   ,FirstWeekOfYear.System));

			Assert.AreEqual(5,DateAndTime.DatePart(DateInterval.Day, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Tuesday    ,FirstWeekOfYear.System));
			Assert.AreEqual(339,DateAndTime.DatePart(DateInterval.DayOfYear , DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Tuesday    ,FirstWeekOfYear.System));
			Assert.AreEqual(15,DateAndTime.DatePart(DateInterval.Hour, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Tuesday    ,FirstWeekOfYear.System));
			Assert.AreEqual(22,DateAndTime.DatePart(DateInterval.Minute, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Tuesday    ,FirstWeekOfYear.System));
			Assert.AreEqual(12,DateAndTime.DatePart(DateInterval.Month, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Tuesday    ,FirstWeekOfYear.System));
			Assert.AreEqual(4,DateAndTime.DatePart(DateInterval.Quarter, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Tuesday    ,FirstWeekOfYear.System));
			Assert.AreEqual(33,DateAndTime.DatePart(DateInterval.Second, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Tuesday    ,FirstWeekOfYear.System));
			Assert.AreEqual(4,DateAndTime.DatePart(DateInterval.Weekday, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Tuesday    ,FirstWeekOfYear.System));			
			Assert.AreEqual(2003,DateAndTime.DatePart(DateInterval.Year, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Tuesday    ,FirstWeekOfYear.System));

			Assert.AreEqual(5,DateAndTime.DatePart(DateInterval.Day, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Wednesday     ,FirstWeekOfYear.System));
			Assert.AreEqual(339,DateAndTime.DatePart(DateInterval.DayOfYear , DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Wednesday     ,FirstWeekOfYear.System));
			Assert.AreEqual(15,DateAndTime.DatePart(DateInterval.Hour, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Wednesday     ,FirstWeekOfYear.System));
			Assert.AreEqual(22,DateAndTime.DatePart(DateInterval.Minute, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Wednesday     ,FirstWeekOfYear.System));
			Assert.AreEqual(12,DateAndTime.DatePart(DateInterval.Month, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Wednesday     ,FirstWeekOfYear.System));
			Assert.AreEqual(4,DateAndTime.DatePart(DateInterval.Quarter, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Wednesday     ,FirstWeekOfYear.System));
			Assert.AreEqual(33,DateAndTime.DatePart(DateInterval.Second, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Wednesday     ,FirstWeekOfYear.System));
			Assert.AreEqual(3,DateAndTime.DatePart(DateInterval.Weekday, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Wednesday     ,FirstWeekOfYear.System));			
			Assert.AreEqual(2003,DateAndTime.DatePart(DateInterval.Year, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Wednesday     ,FirstWeekOfYear.System));

			Assert.AreEqual(5,DateAndTime.DatePart(DateInterval.Day, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Thursday   ,FirstWeekOfYear.System));
			Assert.AreEqual(339,DateAndTime.DatePart(DateInterval.DayOfYear , DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Thursday   ,FirstWeekOfYear.System));
			Assert.AreEqual(15,DateAndTime.DatePart(DateInterval.Hour, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Thursday   ,FirstWeekOfYear.System));
			Assert.AreEqual(22,DateAndTime.DatePart(DateInterval.Minute, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Thursday   ,FirstWeekOfYear.System));
			Assert.AreEqual(12,DateAndTime.DatePart(DateInterval.Month, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Thursday   ,FirstWeekOfYear.System));
			Assert.AreEqual(4,DateAndTime.DatePart(DateInterval.Quarter, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Thursday   ,FirstWeekOfYear.System));
			Assert.AreEqual(33,DateAndTime.DatePart(DateInterval.Second, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Thursday   ,FirstWeekOfYear.System));
			Assert.AreEqual(2,DateAndTime.DatePart(DateInterval.Weekday, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Thursday   ,FirstWeekOfYear.System));			
			Assert.AreEqual(2003,DateAndTime.DatePart(DateInterval.Year, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Thursday   ,FirstWeekOfYear.System));

			Assert.AreEqual(5,DateAndTime.DatePart(DateInterval.Day, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Friday    ,FirstWeekOfYear.System));
			Assert.AreEqual(339,DateAndTime.DatePart(DateInterval.DayOfYear , DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Friday    ,FirstWeekOfYear.System));
			Assert.AreEqual(15,DateAndTime.DatePart(DateInterval.Hour, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Friday    ,FirstWeekOfYear.System));
			Assert.AreEqual(22,DateAndTime.DatePart(DateInterval.Minute, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Friday    ,FirstWeekOfYear.System));
			Assert.AreEqual(12,DateAndTime.DatePart(DateInterval.Month, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Friday    ,FirstWeekOfYear.System));
			Assert.AreEqual(4,DateAndTime.DatePart(DateInterval.Quarter, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Friday    ,FirstWeekOfYear.System));
			Assert.AreEqual(33,DateAndTime.DatePart(DateInterval.Second, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Friday    ,FirstWeekOfYear.System));
			Assert.AreEqual(1,DateAndTime.DatePart(DateInterval.Weekday, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Friday    ,FirstWeekOfYear.System));			
			Assert.AreEqual(2003,DateAndTime.DatePart(DateInterval.Year, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Friday    ,FirstWeekOfYear.System));