+ [Test]
+ public void CurrentTimeZone_SerializationRoundtrip ()
+ {
+ TimeZone tz = TimeZone.CurrentTimeZone;
+ BinaryFormatter bf = new BinaryFormatter ();
+ MemoryStream ms = new MemoryStream ();
+ bf.Serialize (ms, tz);
+
+ ms.Position = 0;
+ TimeZone clone = (TimeZone) bf.Deserialize (ms);
+
+ Assert.AreEqual (tz.DaylightName, clone.DaylightName, "DaylightName");
+ Assert.AreEqual (tz.StandardName, clone.StandardName, "StandardName");
+ }
+
+ static private byte[] serialized_timezone = {
+ 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,
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+ 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,
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+ 0x53, 0x69, 0x7A, 0x65, 0x04, 0x4B, 0x65, 0x79, 0x73, 0x06, 0x56, 0x61, 0x6C, 0x75, 0x65, 0x73, 0x00, 0x00, 0x03, 0x03, 0x00, 0x05,
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+ 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, 0x03, 0x00, 0x00, 0x00, 0x0A, 0x0A, 0x0B, 0x00, 0x00, 0x00, 0x09, 0x04, 0x00, 0x00,
+ 0x00, 0x09, 0x05, 0x00, 0x00, 0x00, 0x10, 0x04, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x08, 0x08, 0xCC, 0x07, 0x00, 0x00, 0x08,
+ 0x08, 0xD5, 0x07, 0x00, 0x00, 0x08, 0x08, 0xD2, 0x07, 0x00, 0x00, 0x10, 0x05, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x09, 0x06,
+ 0x00, 0x00, 0x00, 0x09, 0x07, 0x00, 0x00, 0x00, 0x09, 0x08, 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, 0x88, 0x00, 0x50, 0xD5, 0xB1, 0xC1, 0x91, 0xBD, 0x88, 0x00, 0x68, 0xC4, 0x61, 0x08, 0x00, 0x00, 0x00, 0x01, 0x07,
+ 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
+ };
+
+ [Test]
+ [Category ("NotWorking")]
+ // 1.x - deserialize but strings are null
+ // 2.x - eexception when creating a datetime with a negative value
+ public void DeserializeKnownValue ()
+ {
+ MemoryStream ms = new MemoryStream (serialized_timezone);
+ BinaryFormatter bf = new BinaryFormatter ();
+ TimeZone tz = (TimeZone) bf.Deserialize (ms);
+ 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
+ }