[bcl] Remove more NET_2_0 checks from class libs
[mono.git] / mcs / class / corlib / Test / System / TimeZoneTest.cs
index 0c23887b2234399bb082b21873f7fab021a01dbf..965d2e078e36d3f267b9fcfead09bdca0e99d02b 100644 (file)
@@ -18,126 +18,138 @@ using System.Runtime.Serialization.Formatters.Binary;
 
 namespace MonoTests.System {
 
-public class TimeZoneTest : TestCase {
-
-       private CultureInfo oldcult;
-
-       public TimeZoneTest() {}
-
-       protected override void SetUp ()
-       {
-               oldcult = Thread.CurrentThread.CurrentCulture;
-               Thread.CurrentThread.CurrentCulture = new CultureInfo ("");
-       }
-       
-       protected override void TearDown ()
-       {
-               Thread.CurrentThread.CurrentCulture = oldcult;
-       }
+[TestFixture]
+public class TimeZoneTest {
 
        private void CET (TimeZone t1) 
        {
-               AssertEquals("A01", "CET", t1.StandardName);
-               AssertEquals("A02", "CEST", t1.DaylightName);
+               Assert.AreEqual("CET", t1.StandardName, "A01");
+               Assert.AreEqual("CEST", t1.DaylightName, "A02");
        
                DaylightTime d1 = t1.GetDaylightChanges (2002);
-               AssertEquals("A03", "03/31/2002 02:00:00", d1.Start.ToString ("G"));
-               AssertEquals("A04", "10/27/2002 03:00:00", d1.End.ToString ("G"));
-               AssertEquals("A05", 36000000000L, d1.Delta.Ticks);
+               Assert.AreEqual("03/31/2002 02:00:00", d1.Start.ToString ("G"), "A03");
+               Assert.AreEqual("10/27/2002 03:00:00", d1.End.ToString ("G"), "A04");
+               Assert.AreEqual(36000000000L, d1.Delta.Ticks, "A05");
        
                DaylightTime d2 = t1.GetDaylightChanges (1996);
-               AssertEquals("A06", "03/31/1996 02:00:00", d2.Start.ToString ("G"));
-               AssertEquals("A07", "10/27/1996 03:00:00", d2.End.ToString ("G"));
-               AssertEquals("A08", 36000000000L, d2.Delta.Ticks);
+               Assert.AreEqual("03/31/1996 02:00:00", d2.Start.ToString ("G"), "A06");
+               Assert.AreEqual("10/27/1996 03:00:00", d2.End.ToString ("G"), "A07");
+               Assert.AreEqual(36000000000L, d2.Delta.Ticks, "A08");
        
                DateTime d3 = new DateTime (2002,2,25);
-               AssertEquals("A09", false, t1.IsDaylightSavingTime (d3));
+               Assert.AreEqual(false, t1.IsDaylightSavingTime (d3), "A09");
                DateTime d4 = new DateTime (2002,4,2);
-               AssertEquals("A10", true, t1.IsDaylightSavingTime (d4));
+               Assert.AreEqual(true, t1.IsDaylightSavingTime (d4), "A10");
                DateTime d5 = new DateTime (2002,11,4);
-               AssertEquals("A11", false, t1.IsDaylightSavingTime (d5));
+               Assert.AreEqual(false, t1.IsDaylightSavingTime (d5), "A11");
        
-               AssertEquals("A12", 36000000000L, t1.GetUtcOffset (d3).Ticks);
-               AssertEquals("A13", 72000000000L, t1.GetUtcOffset (d4).Ticks);
-               AssertEquals("A14", 36000000000L, t1.GetUtcOffset (d5).Ticks);
+               Assert.AreEqual(36000000000L, t1.GetUtcOffset (d3).Ticks, "A12");
+               Assert.AreEqual(72000000000L, t1.GetUtcOffset (d4).Ticks, "A13");
+               Assert.AreEqual(36000000000L, t1.GetUtcOffset (d5).Ticks, "A14");
        }
 
        private void EST (TimeZone t1) 
        {
                // It could be EST though...
-               //AssertEquals("B01", "Eastern Standard Time", t1.StandardName);
-               //AssertEquals("B02", "Eastern Daylight Time", t1.DaylightName);
+               //Assert.AreEqual("Eastern Standard Time", t1.StandardName, "B01");
+               //Assert.AreEqual("Eastern Daylight Time", t1.DaylightName, "B02");
 
                DaylightTime d1 = t1.GetDaylightChanges (2002);
-               AssertEquals("B03", "04/07/2002 02:00:00", d1.Start.ToString ("G"));
-               AssertEquals("B04", "10/27/2002 02:00:00", d1.End.ToString ("G"));
-               AssertEquals("B05", 36000000000L, d1.Delta.Ticks);
+               Assert.AreEqual("04/07/2002 02:00:00", d1.Start.ToString ("G"), "B03");
+               Assert.AreEqual("10/27/2002 02:00:00", d1.End.ToString ("G"), "B04");
+               Assert.AreEqual(36000000000L, d1.Delta.Ticks, "B05");
 
                DaylightTime d2 = t1.GetDaylightChanges (1996);
-               AssertEquals("B06", "04/07/1996 02:00:00", d2.Start.ToString ("G"));
-               AssertEquals("B07", "10/27/1996 02:00:00", d2.End.ToString ("G"));
-               AssertEquals("B08", 36000000000L, d2.Delta.Ticks);
+               Assert.AreEqual("04/07/1996 02:00:00", d2.Start.ToString ("G"), "B06");
+               Assert.AreEqual("10/27/1996 02:00:00", d2.End.ToString ("G"), "B07");
+               Assert.AreEqual(36000000000L, d2.Delta.Ticks, "B08");
 
                DateTime d3 = new DateTime (2002,2,25);
-               AssertEquals("B09", false, t1.IsDaylightSavingTime (d3));
+               Assert.AreEqual(false, t1.IsDaylightSavingTime (d3), "B09");
                DateTime d4 = new DateTime (2002,4,8);
-               AssertEquals("B10", true, t1.IsDaylightSavingTime (d4));
+               Assert.AreEqual(true, t1.IsDaylightSavingTime (d4), "B10");
                DateTime d5 = new DateTime (2002,11,4);
-               AssertEquals("B11", false, t1.IsDaylightSavingTime (d5));
+               Assert.AreEqual(false, t1.IsDaylightSavingTime (d5), "B11");
 
-               AssertEquals("B12", -180000000000L, t1.GetUtcOffset (d3).Ticks);
-               AssertEquals("B13", -144000000000L, t1.GetUtcOffset (d4).Ticks);
-               AssertEquals("B14", -180000000000L, t1.GetUtcOffset (d5).Ticks);
+               Assert.AreEqual(-180000000000L, t1.GetUtcOffset (d3).Ticks, "B12");
+               Assert.AreEqual(-144000000000L, t1.GetUtcOffset (d4).Ticks, "B13");
+               Assert.AreEqual(-180000000000L, t1.GetUtcOffset (d5).Ticks, "B14");
        }
 
        private void TST (TimeZone t1) 
        {
-               AssertEquals("C01", "Tokyo Standard Time", t1.StandardName);
-               AssertEquals("C02", "Tokyo Standard Time", t1.DaylightName);
+               Assert.AreEqual("Tokyo Standard Time", t1.StandardName, "C01");
+               Assert.AreEqual("Tokyo Standard Time", t1.DaylightName, "C02");
 
                DateTime d3 = new DateTime (2002,2,25);
-               AssertEquals("C09", false, t1.IsDaylightSavingTime (d3));
+               Assert.AreEqual(false, t1.IsDaylightSavingTime (d3), "C09");
                DateTime d4 = new DateTime (2002,4,8);
-               AssertEquals("C10", false, t1.IsDaylightSavingTime (d4));
+               Assert.AreEqual(false, t1.IsDaylightSavingTime (d4), "C10");
                DateTime d5 = new DateTime (2002,11,4);
-               AssertEquals("C11", false, t1.IsDaylightSavingTime (d5));
+               Assert.AreEqual(false, t1.IsDaylightSavingTime (d5), "C11");
 
-               AssertEquals("C12", 324000000000L, t1.GetUtcOffset (d3).Ticks);
-               AssertEquals("C13", 324000000000L, t1.GetUtcOffset (d4).Ticks);
-               AssertEquals("C14", 324000000000L, t1.GetUtcOffset (d5).Ticks);
+               Assert.AreEqual(324000000000L, t1.GetUtcOffset (d3).Ticks, "C12");
+               Assert.AreEqual(324000000000L, t1.GetUtcOffset (d4).Ticks, "C13");
+               Assert.AreEqual(324000000000L, t1.GetUtcOffset (d5).Ticks, "C14");
        }
 
        private void GMT (TimeZone t1) {
                // Probably wont work on MS.NET, but is better than nothing. Where do
                // we change our implementation to match theirs?
                
-               AssertEquals("D01", "GMT", t1.StandardName);
-               AssertEquals("D02", "BST", t1.DaylightName);
+               Assert.AreEqual("GMT", t1.StandardName, "D01");
+               Assert.IsTrue("BST" == t1.DaylightName || "IST" == t1.DaylightName, "D02");
        
                DaylightTime d1 = t1.GetDaylightChanges (2002);
-               AssertEquals("D03", "03/31/2002 01:00:00", d1.Start.ToString ("G"));
-               AssertEquals("D04", "10/27/2002 02:00:00", d1.End.ToString ("G"));
-               AssertEquals("D05", 36000000000L, d1.Delta.Ticks);
+               Assert.AreEqual("03/31/2002 01:00:00", d1.Start.ToString ("G"), "D03");
+               Assert.AreEqual("10/27/2002 02:00:00", d1.End.ToString ("G"), "D04");
+               Assert.AreEqual(36000000000L, d1.Delta.Ticks, "D05");
        
                DaylightTime d2 = t1.GetDaylightChanges (1996);
-               AssertEquals("D06", "03/31/1996 01:00:00", d2.Start.ToString ("G"));
-               AssertEquals("D07", "10/27/1996 02:00:00", d2.End.ToString ("G"));
-               AssertEquals("D08", 36000000000L, d2.Delta.Ticks);
+               Assert.AreEqual("03/31/1996 01:00:00", d2.Start.ToString ("G"), "D06");
+               Assert.AreEqual("10/27/1996 02:00:00", d2.End.ToString ("G"), "D07");
+               Assert.AreEqual(36000000000L, d2.Delta.Ticks, "D08");
        
                DateTime d3 = new DateTime (2002,2,25);
-               AssertEquals("D09", false, t1.IsDaylightSavingTime (d3));
+               Assert.AreEqual(false, t1.IsDaylightSavingTime (d3), "D09");
                DateTime d4 = new DateTime (2002,4,2);
-               AssertEquals("D10", true, t1.IsDaylightSavingTime (d4));
+               Assert.AreEqual(true, t1.IsDaylightSavingTime (d4), "D10");
                DateTime d5 = new DateTime (2002,11,4);
-               AssertEquals("D11", false, t1.IsDaylightSavingTime (d5));
+               Assert.AreEqual(false, t1.IsDaylightSavingTime (d5), "D11");
        
-               AssertEquals("D12", 0L, t1.GetUtcOffset (d3).Ticks);
-               AssertEquals("D13", 36000000000L, t1.GetUtcOffset (d4).Ticks);
-               AssertEquals("D14", 0L, t1.GetUtcOffset (d5).Ticks);
+               Assert.AreEqual(0L, t1.GetUtcOffset (d3).Ticks, "D12");
+               Assert.AreEqual(36000000000L, t1.GetUtcOffset (d4).Ticks, "D13");
+               Assert.AreEqual(0L, t1.GetUtcOffset (d5).Ticks, "D14");
        }
 
+       private void NZST(TimeZone t1) {
+               Assert.AreEqual("NZST", t1.StandardName, "E01");
+               Assert.AreEqual("NZDT", t1.DaylightName, "E02");
 
+               DaylightTime d1 = t1.GetDaylightChanges (2013);
+               Assert.AreEqual("09/29/2013 02:00:00", d1.Start.ToString ("G"), "E03");
+               Assert.AreEqual("04/07/2013 03:00:00", d1.End.ToString ("G"), "E04");
+               Assert.AreEqual(36000000000L, d1.Delta.Ticks, "E05");
 
+               DaylightTime d2 = t1.GetDaylightChanges (2001);
+               Assert.AreEqual("10/07/2001 02:00:00", d2.Start.ToString ("G"), "E06");
+               Assert.AreEqual("03/18/2001 03:00:00", d2.End.ToString ("G"), "E07");
+               Assert.AreEqual(36000000000L, d2.Delta.Ticks, "E08");
+
+               DateTime d3 = new DateTime(2013,02,15);
+               Assert.AreEqual(true, t1.IsDaylightSavingTime (d3), "E09");
+               DateTime d4 = new DateTime(2013,04,30);
+               Assert.AreEqual(false, t1.IsDaylightSavingTime (d4), "E10");
+               DateTime d5 = new DateTime(2013,11,03);
+               Assert.AreEqual(true, t1.IsDaylightSavingTime (d5), "E11");
+
+               Assert.AreEqual(36000000000L /*hour*/ * 13L, t1.GetUtcOffset (d3).Ticks, "E12");
+               Assert.AreEqual(36000000000L /*hour*/ * 12L, t1.GetUtcOffset (d4).Ticks, "E13");
+               Assert.AreEqual(36000000000L /*hour*/ * 13L, t1.GetUtcOffset (d5).Ticks, "E14");
+       }
+
+       [Test]
+       [Culture ("")]
        public void TestCtors ()
        {
                TimeZone t1 = TimeZone.CurrentTimeZone;
@@ -155,6 +167,9 @@ public class TimeZoneTest : TestCase {
                        case "GMT":
                                GMT (t1);
                                break;
+                       case "NZST":
+                               NZST (t1);
+                               break;
                        default:
                                NUnit.Framework.Assert.Ignore ("Your time zone (" + t1.StandardName + ") isn't defined in the test case");
                                break;
@@ -172,12 +187,11 @@ public class TimeZoneTest : TestCase {
                ms.Position = 0;
                TimeZone clone = (TimeZone) bf.Deserialize (ms);
 
-               AssertEquals ("DaylightName", tz.DaylightName, clone.DaylightName);
-               AssertEquals ("StandardName", tz.StandardName, clone.StandardName);
+               Assert.AreEqual (tz.DaylightName, clone.DaylightName, "DaylightName");
+               Assert.AreEqual (tz.StandardName, clone.StandardName, "StandardName");
        }
 
        static private byte[] serialized_timezone = {
-#if NET_2_0
                0x00, 0x01, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x01, 0x00, 0x00, 0x00, 
                0x1C, 0x53, 0x79, 0x73, 0x74, 0x65, 0x6D, 0x2E, 0x43, 0x75, 0x72, 0x72, 0x65, 0x6E, 0x74, 0x53, 0x79, 0x73, 0x74, 0x65, 0x6D, 0x54, 
                0x69, 0x6D, 0x65, 0x5A, 0x6F, 0x6E, 0x65, 0x04, 0x00, 0x00, 0x00, 0x17, 0x6D, 0x5F, 0x43, 0x61, 0x63, 0x68, 0x65, 0x64, 0x44, 0x61, 
@@ -206,34 +220,6 @@ public class TimeZoneTest : TestCase {
                0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, 0x50, 0x23, 0xFA, 0x07, 0x06, 0xC7, 0x88, 0x00, 0xD0, 0xE2, 0xC4, 0x0C, 0xAB, 0xC7, 
                0x88, 0x00, 0x68, 0xC4, 0x61, 0x08, 0x00, 0x00, 0x00, 0x01, 0x08, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, 0x50, 0x0C, 0x0F, 
                0xEF, 0xAB, 0xC3, 0x88, 0x00, 0x90, 0xE7, 0xB0, 0x73, 0x4B, 0xC4, 0x88, 0x00, 0x68, 0xC4, 0x61, 0x08, 0x00, 0x00, 0x00, 0x0B
-#else
-               0x00, 0x01, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x01, 0x00, 0x00, 0x00, 
-               0x1C, 0x53, 0x79, 0x73, 0x74, 0x65, 0x6D, 0x2E, 0x43, 0x75, 0x72, 0x72, 0x65, 0x6E, 0x74, 0x53, 0x79, 0x73, 0x74, 0x65, 0x6D, 0x54, 
-               0x69, 0x6D, 0x65, 0x5A, 0x6F, 0x6E, 0x65, 0x04, 0x00, 0x00, 0x00, 0x17, 0x6D, 0x5F, 0x43, 0x61, 0x63, 0x68, 0x65, 0x64, 0x44, 0x61, 
-               0x79, 0x6C, 0x69, 0x67, 0x68, 0x74, 0x43, 0x68, 0x61, 0x6E, 0x67, 0x65, 0x73, 0x0D, 0x6D, 0x5F, 0x74, 0x69, 0x63, 0x6B, 0x73, 0x4F, 
-               0x66, 0x66, 0x73, 0x65, 0x74, 0x0E, 0x6D, 0x5F, 0x73, 0x74, 0x61, 0x6E, 0x64, 0x61, 0x72, 0x64, 0x4E, 0x61, 0x6D, 0x65, 0x0E, 0x6D, 
-               0x5F, 0x64, 0x61, 0x79, 0x6C, 0x69, 0x67, 0x68, 0x74, 0x4E, 0x61, 0x6D, 0x65, 0x03, 0x00, 0x01, 0x01, 0x1C, 0x53, 0x79, 0x73, 0x74, 
-               0x65, 0x6D, 0x2E, 0x43, 0x6F, 0x6C, 0x6C, 0x65, 0x63, 0x74, 0x69, 0x6F, 0x6E, 0x73, 0x2E, 0x48, 0x61, 0x73, 0x68, 0x74, 0x61, 0x62, 
-               0x6C, 0x65, 0x09, 0x09, 0x02, 0x00, 0x00, 0x00, 0x00, 0xF8, 0x29, 0x17, 0xD6, 0xFF, 0xFF, 0xFF, 0x06, 0x03, 0x00, 0x00, 0x00, 0x15, 
-               0x45, 0x61, 0x73, 0x74, 0x65, 0x72, 0x6E, 0x20, 0x53, 0x74, 0x61, 0x6E, 0x64, 0x61, 0x72, 0x64, 0x20, 0x54, 0x69, 0x6D, 0x65, 0x0A, 
-               0x04, 0x02, 0x00, 0x00, 0x00, 0x1C, 0x53, 0x79, 0x73, 0x74, 0x65, 0x6D, 0x2E, 0x43, 0x6F, 0x6C, 0x6C, 0x65, 0x63, 0x74, 0x69, 0x6F, 
-               0x6E, 0x73, 0x2E, 0x48, 0x61, 0x73, 0x68, 0x74, 0x61, 0x62, 0x6C, 0x65, 0x07, 0x00, 0x00, 0x00, 0x0A, 0x4C, 0x6F, 0x61, 0x64, 0x46, 
-               0x61, 0x63, 0x74, 0x6F, 0x72, 0x07, 0x56, 0x65, 0x72, 0x73, 0x69, 0x6F, 0x6E, 0x08, 0x43, 0x6F, 0x6D, 0x70, 0x61, 0x72, 0x65, 0x72, 
-               0x10, 0x48, 0x61, 0x73, 0x68, 0x43, 0x6F, 0x64, 0x65, 0x50, 0x72, 0x6F, 0x76, 0x69, 0x64, 0x65, 0x72, 0x08, 0x48, 0x61, 0x73, 0x68, 
-               0x53, 0x69, 0x7A, 0x65, 0x04, 0x4B, 0x65, 0x79, 0x73, 0x06, 0x56, 0x61, 0x6C, 0x75, 0x65, 0x73, 0x00, 0x00, 0x03, 0x03, 0x00, 0x05, 
-               0x05, 0x0B, 0x08, 0x1C, 0x53, 0x79, 0x73, 0x74, 0x65, 0x6D, 0x2E, 0x43, 0x6F, 0x6C, 0x6C, 0x65, 0x63, 0x74, 0x69, 0x6F, 0x6E, 0x73, 
-               0x2E, 0x49, 0x43, 0x6F, 0x6D, 0x70, 0x61, 0x72, 0x65, 0x72, 0x24, 0x53, 0x79, 0x73, 0x74, 0x65, 0x6D, 0x2E, 0x43, 0x6F, 0x6C, 0x6C, 
-               0x65, 0x63, 0x74, 0x69, 0x6F, 0x6E, 0x73, 0x2E, 0x49, 0x48, 0x61, 0x73, 0x68, 0x43, 0x6F, 0x64, 0x65, 0x50, 0x72, 0x6F, 0x76, 0x69, 
-               0x64, 0x65, 0x72, 0x08, 0xEC, 0x51, 0x38, 0x3F, 0x02, 0x00, 0x00, 0x00, 0x0A, 0x0A, 0x0B, 0x00, 0x00, 0x00, 0x09, 0x04, 0x00, 0x00, 
-               0x00, 0x09, 0x05, 0x00, 0x00, 0x00, 0x10, 0x04, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x08, 0x08, 0xCC, 0x07, 0x00, 0x00, 0x08, 
-               0x08, 0xD2, 0x07, 0x00, 0x00, 0x10, 0x05, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x09, 0x06, 0x00, 0x00, 0x00, 0x09, 0x07, 0x00, 
-               0x00, 0x00, 0x04, 0x06, 0x00, 0x00, 0x00, 0x21, 0x53, 0x79, 0x73, 0x74, 0x65, 0x6D, 0x2E, 0x47, 0x6C, 0x6F, 0x62, 0x61, 0x6C, 0x69, 
-               0x7A, 0x61, 0x74, 0x69, 0x6F, 0x6E, 0x2E, 0x44, 0x61, 0x79, 0x6C, 0x69, 0x67, 0x68, 0x74, 0x54, 0x69, 0x6D, 0x65, 0x03, 0x00, 0x00, 
-               0x00, 0x07, 0x6D, 0x5F, 0x73, 0x74, 0x61, 0x72, 0x74, 0x05, 0x6D, 0x5F, 0x65, 0x6E, 0x64, 0x07, 0x6D, 0x5F, 0x64, 0x65, 0x6C, 0x74, 
-               0x61, 0x00, 0x00, 0x00, 0x0D, 0x0D, 0x0C, 0x00, 0x10, 0xFA, 0x0F, 0x3D, 0xF2, 0xBC, 0x08, 0x00, 0x50, 0xD5, 0xB1, 0xC1, 0x91, 0xBD, 
-               0x08, 0x00, 0x68, 0xC4, 0x61, 0x08, 0x00, 0x00, 0x00, 0x01, 0x07, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, 0x50, 0x0C, 0x0F, 
-               0xEF, 0xAB, 0xC3, 0x08, 0x00, 0x90, 0xE7, 0xB0, 0x73, 0x4B, 0xC4, 0x08, 0x00, 0x68, 0xC4, 0x61, 0x08, 0x00, 0x00, 0x00, 0x0B
-#endif
        };
 
        [Test]
@@ -245,9 +231,112 @@ public class TimeZoneTest : TestCase {
                MemoryStream ms = new MemoryStream (serialized_timezone);
                BinaryFormatter bf = new BinaryFormatter ();
                TimeZone tz = (TimeZone) bf.Deserialize (ms);
-               AssertEquals ("DaylightName", "Eastern Daylight Time", tz.DaylightName);
-               AssertEquals ("StandardName", "Eastern Standard Time", tz.StandardName);
+               Assert.AreEqual ("Eastern Daylight Time", tz.DaylightName, "DaylightName");
+               Assert.AreEqual ("Eastern Standard Time", tz.StandardName, "StandardName");
        }
-}
 
+       [Test]
+       public void ToLocalTimeAtDSTBoundaries ()
+       {
+               TimeZone tz = TimeZone.CurrentTimeZone;
+               DateTime dst_start_utc = tz.GetDaylightChanges(2007).Start.ToUniversalTime ();
+
+               if (dst_start_utc == DateTime.MinValue)
+                       Assert.Ignore ("Couldn't get beginning of daylight saving time in 2007.");
+               Assert.IsTrue (tz.ToLocalTime (dst_start_utc.Subtract (new TimeSpan (0, 1, 0))) < tz.ToLocalTime (dst_start_utc), "0:1:59 < 0:3:00");
+               Assert.IsTrue (tz.ToLocalTime (dst_start_utc) < tz.ToLocalTime (dst_start_utc.Add (new TimeSpan (0, 1, 0))), "0:3:00 < 0:3:01");
+               Assert.IsTrue (tz.ToLocalTime (dst_start_utc.Add (new TimeSpan (0, 1, 0))) < tz.ToLocalTime (dst_start_utc.Add (new TimeSpan (0, 59, 0))), "0:3:01 < 0:3:59");
+               Assert.IsTrue (tz.ToLocalTime (dst_start_utc.Add (new TimeSpan (0, 59, 0))) < tz.ToLocalTime (dst_start_utc.Add (new TimeSpan (1, 0, 0))), "0:3:59 < 0:4:00");
+               Assert.IsTrue (tz.ToLocalTime (dst_start_utc.Add (new TimeSpan (1, 0, 0))) < tz.ToLocalTime (dst_start_utc.Add (new TimeSpan (1, 1, 0))), "0:4:00 < 0:4:01");
+       }
+
+               [Test]
+               public void GetUtcOffsetAtDSTBoundary ()
+               {
+                       /*
+                        * Getting a definitive list of timezones which do or don't observe Daylight
+                        * Savings is difficult (can't say America's or USA definitively) and lengthy see 
+                        *
+                        * http://en.wikipedia.org/wiki/Daylight_saving_time_by_country
+                        *
+                        * as a good starting point for a list.
+                        *
+                        * The following are SOME of the timezones/regions which do support daylight savings.
+                        *
+                        * Pacific/Auckland
+                        * Pacific/Sydney
+                        * USA (EST, CST, MST, PST, AKST) note this does not cover all states or regions
+                        * Europe/London (GMT)
+                        * CET (member states of the European Union)
+                        *
+                        * This test should work in all the above timezones
+                        */
+
+
+                       TimeZone tz = TimeZone.CurrentTimeZone;
+                       int year = DateTime.Now.Year;
+                       DaylightTime daylightChanges = tz.GetDaylightChanges(year);
+                       DateTime dst_end = daylightChanges.End;
+
+                       if (dst_end == DateTime.MinValue)
+                               Assert.Ignore (tz.StandardName + " did not observe daylight saving time during " + year + ".");
+
+                       var standardOffset = tz.GetUtcOffset(daylightChanges.Start.AddMinutes(-1));
+
+                       Assert.AreEqual(standardOffset, tz.GetUtcOffset (dst_end));
+                       Assert.AreEqual(standardOffset, tz.GetUtcOffset (dst_end.Add (daylightChanges.Delta.Negate ().Add (TimeSpan.FromSeconds(1)))));
+                       Assert.AreEqual(standardOffset, tz.GetUtcOffset (dst_end.Add(daylightChanges.Delta.Negate ())));
+                       Assert.AreNotEqual(standardOffset, tz.GetUtcOffset (dst_end.Add(daylightChanges.Delta.Negate ().Add (TimeSpan.FromSeconds(-1)))));
+               }
+
+
+               [Test]
+               public void StaticProperties ()
+               {
+                       Assert.IsNotNull (TimeZoneInfo.Local, "Local");
+                       Assert.IsNotNull (TimeZoneInfo.Utc, "Utc");
+               }
+               
+               [Test]
+               public void FindSystemTimeZoneById ()
+               {
+                       TimeZoneInfo tzi = TimeZoneInfo.FindSystemTimeZoneById ("Canada/Eastern");
+                       Assert.AreEqual ("EDT", tzi.DaylightName, "DaylightName");
+                       Assert.AreEqual ("EST", tzi.StandardName, "StandardName");
+                       Assert.IsTrue (tzi.SupportsDaylightSavingTime, "SupportsDaylightSavingTime");
+               }
+
+#if MOBILE
+               // On device we cannot read the OS file system to look for /etc/localtime
+               // and /usr/share/zoneinfo - so we must initialize the BCL TimeZoneInfo
+               // from NSTimeZoneInfo. The tests here check the code paths between the
+               // two types - if they break then TimeZoneInfo work work at all
+               // ref: http://bugzilla.xamarin.com/show_bug.cgi?id=1790
+               
+               bool incomplete_data_on_simulator_only_bug;
+
+               [Test]
+               public void GetSystemTimeZones ()
+               {
+                       // if test is executed a second time then it report less than 400 (about 127) items available
+                       if (incomplete_data_on_simulator_only_bug)
+                               Assert.Ignore ("known to fail on some iOS simulator versions - see source comments");
+                       
+                       try {
+                               Assert.That (TimeZoneInfo.GetSystemTimeZones ().Count, Is.GreaterThan (400), "GetSystemTimeZones");
+                       } catch (NullReferenceException) {
+                               // that's a weird one. It failed on iOS 5.1 *beta* simulator (on Lion) but it worked on *final*
+                               // now it fails on Snow Leopard the same way (incomplete data) with iOS5 simulator (OS update ?)
+                               // but it *never*ever* failed on devices
+                               incomplete_data_on_simulator_only_bug = true;
+#if XAMCORE_2_0
+                               if (ObjCRuntime.Runtime.Arch == ObjCRuntime.Arch.SIMULATOR)
+#else
+                               if (MonoTouch.ObjCRuntime.Runtime.Arch == MonoTouch.ObjCRuntime.Arch.SIMULATOR)
+#endif
+                                       Assert.Ignore ("known to fail on some iOS simulator versions - see source comments");
+                       }
+               }
+#endif
+       }
 }