dateandtimetests.cs

大名鼎鼎的mono是.NET平台的跨平台（支持linux

			Assert.AreEqual(5,DateAndTime.DatePart(DateInterval.Day, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Saturday     ,FirstWeekOfYear.System));
			Assert.AreEqual(339,DateAndTime.DatePart(DateInterval.DayOfYear , DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Saturday     ,FirstWeekOfYear.System));
			Assert.AreEqual(15,DateAndTime.DatePart(DateInterval.Hour, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Saturday     ,FirstWeekOfYear.System));
			Assert.AreEqual(22,DateAndTime.DatePart(DateInterval.Minute, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Saturday     ,FirstWeekOfYear.System));
			Assert.AreEqual(12,DateAndTime.DatePart(DateInterval.Month, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Saturday     ,FirstWeekOfYear.System));
			Assert.AreEqual(4,DateAndTime.DatePart(DateInterval.Quarter, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Saturday     ,FirstWeekOfYear.System));
			Assert.AreEqual(33,DateAndTime.DatePart(DateInterval.Second, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Saturday     ,FirstWeekOfYear.System));
			Assert.AreEqual(7,DateAndTime.DatePart(DateInterval.Weekday, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Saturday     ,FirstWeekOfYear.System));			
			Assert.AreEqual(2003,DateAndTime.DatePart(DateInterval.Year, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.Saturday     ,FirstWeekOfYear.System));
		}

		[Test]
		public void DatePart_FirstWeekOfYear_1()
		{
			Assert.AreEqual(5,DateAndTime.DatePart(DateInterval.Day, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.Jan1 ));
			Assert.AreEqual(339,DateAndTime.DatePart(DateInterval.DayOfYear, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.Jan1 ));
			Assert.AreEqual(15,DateAndTime.DatePart(DateInterval.Hour, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.Jan1 ));
			Assert.AreEqual(22,DateAndTime.DatePart(DateInterval.Minute, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.Jan1 ));
			Assert.AreEqual(12,DateAndTime.DatePart(DateInterval.Month, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.Jan1 ));
			Assert.AreEqual(4,DateAndTime.DatePart(DateInterval.Quarter, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.Jan1 ));
			Assert.AreEqual(33,DateAndTime.DatePart(DateInterval.Second, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.Jan1 ));
			Assert.AreEqual(6,DateAndTime.DatePart(DateInterval.Weekday, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.Jan1 ));			
			Assert.AreEqual(2003,DateAndTime.DatePart(DateInterval.Year, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.Jan1 ));

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

			Assert.AreEqual(5,DateAndTime.DatePart(DateInterval.Day, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.FirstFullWeek   ));
			Assert.AreEqual(339,DateAndTime.DatePart(DateInterval.DayOfYear, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.FirstFullWeek  ));
			Assert.AreEqual(15,DateAndTime.DatePart(DateInterval.Hour, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.FirstFullWeek   ));
			Assert.AreEqual(22,DateAndTime.DatePart(DateInterval.Minute, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.FirstFullWeek   ));
			Assert.AreEqual(12,DateAndTime.DatePart(DateInterval.Month, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.FirstFullWeek   ));
			Assert.AreEqual(4,DateAndTime.DatePart(DateInterval.Quarter, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.FirstFullWeek   ));
			Assert.AreEqual(33,DateAndTime.DatePart(DateInterval.Second, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.FirstFullWeek   ));
			Assert.AreEqual(6,DateAndTime.DatePart(DateInterval.Weekday, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.FirstFullWeek   ));			
			Assert.AreEqual(2003,DateAndTime.DatePart(DateInterval.Year, DateTime.Parse("12/5/03 15:22:33"),FirstDayOfWeek.System ,FirstWeekOfYear.FirstFullWeek   ));
		}

		[Test]
		[ExpectedException(typeof(ArgumentException))]
		public void DatePart_1()
		{
			// Argument 'Interval' is not a valid value.
			DateAndTime.DatePart("k", DateTime.Parse("12/5/03"),FirstDayOfWeek.System ,FirstWeekOfYear.System );
		}

		[Test]
		[ExpectedException(typeof(InvalidCastException))]
		public void DatePart_3()
		{
			// Argument 'Date2' cannot be converted to type 'Date'.
			DateAndTime.DatePart("d", "12test5/03", (FirstDayOfWeek)8 ,FirstWeekOfYear.System );
		}

		#endregion

		#region DateSerial Tests

		
		[Test]
		public void DateSerial () 
		{
			DateTime dtJan4 = new DateTime(2001, 1, 4);
			DateTime dtSerial = DateAndTime.DateSerial(2001, 1, 4);

			Assert.AreEqual( dtJan4, dtSerial);
		}

		[Test]
		public void DateSerial_1()
		{
			Assert.AreEqual(DateTime.Parse("12/1/2003"),DateAndTime.DateSerial(2003,12,1));

			Assert.AreEqual(new DateTime(DateTime.Now.Year - 6,5,24),DateAndTime.DateSerial(-5,-6,-7));

			Assert.AreEqual(DateTime.Parse("12/1/9999"),DateAndTime.DateSerial(9999,12,1));
			Assert.AreEqual(DateTime.Parse("12/1/2003"),DateAndTime.DateSerial(03,12,1));
			Assert.AreEqual(DateTime.Parse("12/1/2025"),DateAndTime.DateSerial(25,12,1));

			Assert.AreEqual(DateTime.Parse("12/1/2000"),DateAndTime.DateSerial(0,12,1));
			Assert.AreEqual(new DateTime(DateTime.Now.Year - 1,12,1),DateAndTime.DateSerial(-1,12,1));
			Assert.AreEqual(new DateTime(DateTime.Now.Year - 99,12,1),DateAndTime.DateSerial(-99,12,1));
		}

		[Test]
		public void DateSerial_2()
		{
			Assert.AreEqual(DateTime.Parse("1/1/2003"),DateAndTime.DateSerial(2003,1,1));
			Assert.AreEqual(DateTime.Parse("12/1/2002"),DateAndTime.DateSerial(2003,0,1));
			Assert.AreEqual(DateTime.Parse("11/1/2002"),DateAndTime.DateSerial(2003,-1,1));
			Assert.AreEqual(DateTime.Parse("1/1/2004"),DateAndTime.DateSerial(2003,13,1));

			Assert.AreEqual(DateTime.Parse("2/1/2001"),DateAndTime.DateSerial(2003,-22,1));
		}

		[Test]
		public void DateSerial_3()
		{
			Assert.AreEqual(DateTime.Parse("5/1/2003"),DateAndTime.DateSerial(2003,5,1));
			Assert.AreEqual(DateTime.Parse("4/30/2003"),DateAndTime.DateSerial(2003,5,0));
			Assert.AreEqual(DateTime.Parse("4/29/2003"),DateAndTime.DateSerial(2003,5,-1));
			Assert.AreEqual(DateTime.Parse("6/24/2003"),DateAndTime.DateSerial(2003,5,55));
		}

		#endregion

		#region DateString Tests

		[Test]
		public void DateString() 
		{
			string s = DateAndTime.DateString;
			DateTime dtNow = DateTime.Today;
			Assert.AreEqual(dtNow.ToShortDateString(), DateTime.Parse(s).ToShortDateString());

			// TODO: Add a test for setting the date string too
		}

        //DateAndTime.DateString property is read-only under TARGET_JVM
        [Category("TargetJvmNotWorking")]
		[Test]
		public void DateString_1()
		{
			DateTime now = DateTime.Now;
			try {
				Assert.AreEqual(Strings.Format(DateTime.Now,"MM-dd-yyyy"),DateAndTime.DateString);

				DateAndTime.DateString = "9-5-2003";
				Assert.AreEqual("09-05-2003",DateAndTime.DateString);
				Assert.AreEqual(Strings.Format(DateTime.Now,"MM-dd-yyyy"),DateAndTime.DateString);

				DateAndTime.DateString = "9-5-03";
				Assert.AreEqual("09-05-2003",DateAndTime.DateString);
				Assert.AreEqual(Strings.Format(DateTime.Now,"MM-dd-yyyy"),DateAndTime.DateString);

				DateAndTime.DateString = "9/5/2003";
				Assert.AreEqual("09-05-2003",DateAndTime.DateString);
				Assert.AreEqual(Strings.Format(DateTime.Now,"MM-dd-yyyy"),DateAndTime.DateString);

				DateAndTime.DateString = "9/5/03";
				Assert.AreEqual("09-05-2003",DateAndTime.DateString);
				Assert.AreEqual(Strings.Format(DateTime.Now,"MM-dd-yyyy"),DateAndTime.DateString);
			} catch (System.UnauthorizedAccessException exception) {
				Assert.Ignore (exception.Message);			
			} finally {
				try {
					DateAndTime.Today = now;
					DateAndTime.TimeOfDay = now;
				} catch {
				}
			}			
		}

		[Test]
		[ExpectedException(typeof(InvalidCastException))]
		public void DateString_2()
		{
			// Cast from string "9-5-003" to type 'Date' is not valid.
			DateAndTime.DateString = "9-5-003";
		}

		#endregion

		#region DateValue Tests

		[Test]
		public void DateValue () 
		{
			try 
			{
				DateAndTime.DateValue("This is not a date.");
			}
			catch (InvalidCastException) 
			{
				/* do nothing.  this is what we expect */
			}
			catch (Exception e) 
			{
				Assert.Fail ("Unexpected exception:" + e);
			}
			Assert.AreEqual(( new DateTime(1969, 2, 12)), DateAndTime.DateValue("02/12/1969"),"#DV03");
			Assert.AreEqual((new DateTime(1969, 2, 12)), DateAndTime.DateValue("February 12, 1969"),"#DV04");
		}

		[Test]
		public void DateValue_1()
		{
			if (Helper.OnMono)
				Assert.Ignore ("Buggy mono: #81535");
				
			Assert.AreEqual(DateTime.Parse("12/30/1991"),DateAndTime.DateValue("12/30/1991"));
			Assert.AreEqual(DateTime.Parse("12/30/1991"),DateAndTime.DateValue("12/30/91"));
			Assert.AreEqual(DateTime.Parse("12/30/1991"),DateAndTime.DateValue("December 30, 1991"));
			Assert.AreEqual(DateTime.Parse("12/30/1991"),DateAndTime.DateValue("Dec 30, 1991"));