mcs/class/corlib/Test/System/TimeZoneInfoTest.cs

   1 /*
   2  * TimeZoneInfo.Tests
   3  *
   4  * Author(s)
   5  *      Stephane Delcroix <stephane@delcroix.org>
   6  *
   7  * Copyright 2011 Xamarin Inc.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining
  10  * a copy of this software and associated documentation files (the
  11  * "Software"), to deal in the Software without restriction, including
  12  * without limitation the rights to use, copy, modify, merge, publish,
  13  * distribute, sublicense, and/or sell copies of the Software, and to
  14  * permit persons to whom the Software is furnished to do so, subject to
  15  * the following conditions:
  16  *
  17  * The above copyright notice and this permission notice shall be
  18  * included in all copies or substantial portions of the Software.
  19  *
  20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27  */
  28
  29 using System;
  30 using System.IO;
  31 using System.Runtime.InteropServices;
  32 using System.Runtime.Serialization.Formatters.Binary;
  33 using System.Collections;
  34 using System.Reflection;
  35 using System.Globalization;
  36
  37 using NUnit.Framework;
  38 namespace MonoTests.System
  39 {
  40         public class TimeZoneInfoTest
  41         {
  42                 static FieldInfo localField;
  43                 static FieldInfo cachedDataField;
  44                 static object localFieldObj;
  45
  46                 public static void SetLocal (TimeZoneInfo val)
  47                 {
  48                         if (localField == null) {
  49                                 if (Type.GetType ("Mono.Runtime") != null) {
  50                                         localField = typeof (TimeZoneInfo).GetField ("local",
  51                                                         BindingFlags.Static | BindingFlags.GetField | BindingFlags.NonPublic);
  52                                 } else {
  53                                         cachedDataField = typeof (TimeZoneInfo).GetField ("s_cachedData",
  54                                                         BindingFlags.Static | BindingFlags.GetField | BindingFlags.NonPublic);
  55
  56                                         localField = cachedDataField.FieldType.GetField ("m_localTimeZone",
  57                                                 BindingFlags.Instance | BindingFlags.GetField | BindingFlags.NonPublic);
  58                                 }
  59                         }
  60
  61                         if (cachedDataField != null)
  62                                 localFieldObj = cachedDataField.GetValue (null);
  63
  64                         localField.SetValue (localFieldObj, val);
  65                 }
  66
  67                 [TestFixture]
  68                 public class PropertiesTests
  69                 {
  70                         [Test]
  71                         public void GetLocal ()
  72                         {
  73                                 if (Environment.OSVersion.Platform != PlatformID.Unix)
  74                                         Assert.Ignore ("Not running on Unix.");
  75                                 TimeZoneInfo local = TimeZoneInfo.Local;
  76                                 Assert.IsNotNull (local);
  77                                 Assert.IsTrue (true);
  78                         }
  79
  80                         [DllImport ("libc")]
  81                         private static extern int readlink (string path, byte[] buffer, int buflen);
  82
  83                         [Test] // Covers #24958
  84                         public void LocalId ()
  85                         {
  86                                 byte[] buf = new byte [512];
  87
  88                                 var path = "/etc/localtime";
  89                                 try {
  90                                         var ret = readlink (path, buf, buf.Length);
  91                                         if (ret == -1)
  92                                                 return; // path is not a symbolic link, nothing to test
  93                                 } catch (DllNotFoundException e) {
  94                                         return;
  95                                 }
  96 #if !MONOTOUCH && !XAMMAC
  97                                 // this assumption is incorrect for iOS, tvO, watchOS and OSX
  98                                 Assert.IsTrue (TimeZoneInfo.Local.Id != "Local", "Local timezone id should not be \"Local\"");
  99 #endif
 100                         }
 101                 }
 102
 103                 [TestFixture]
 104                 public class CreateCustomTimezoneTests
 105                 {
 106                         [Test]
 107                         [ExpectedException (typeof (ArgumentNullException))]
 108                         public void IdIsNullException ()
 109                         {
 110                                 TimeZoneInfo.CreateCustomTimeZone (null, new TimeSpan (0), null, null);
 111                         }
 112
 113                         [Test]
 114                         [ExpectedException (typeof (ArgumentException))]
 115                         public void IdIsEmptyString ()
 116                         {
 117                                 TimeZoneInfo.CreateCustomTimeZone ("", new TimeSpan (0), null, null);
 118                         }
 119
 120                         [Test]
 121                         [ExpectedException (typeof (ArgumentException))]
 122                         public void OffsetIsNotMinutes ()
 123                         {
 124                                 TimeZoneInfo.CreateCustomTimeZone ("mytimezone", new TimeSpan (0, 0, 55), null, null);
 125                         }
 126
 127                         [Test]
 128                         [ExpectedException (typeof (ArgumentOutOfRangeException))]
 129                         public void OffsetTooBig ()
 130                         {
 131                                 TimeZoneInfo.CreateCustomTimeZone ("mytimezone", new TimeSpan (14, 1, 0), null, null);
 132                         }
 133
 134                         [Test]
 135                         [ExpectedException (typeof (ArgumentOutOfRangeException))]
 136                         public void OffsetTooSmall ()
 137                         {
 138                                 TimeZoneInfo.CreateCustomTimeZone ("mytimezone", - new TimeSpan (14, 1, 0), null, null);
 139                         }
 140
 141                 #if STRICT
 142                         [Test]
 143                         [ExpectedException (typeof (ArgumentException))]
 144                         public void IdLongerThan32 ()
 145                         {
 146                                 TimeZoneInfo.CreateCustomTimeZone ("12345678901234567890123456789012345", new TimeSpan (0), null, null);
 147                         }
 148                 #endif
 149
 150                         [Test]
 151                         [ExpectedException (typeof (InvalidTimeZoneException))]
 152                         public void AdjustmentRulesOverlap ()
 153                         {
 154                                 TimeZoneInfo.TransitionTime s1 = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,4,0,0), 3, 2, DayOfWeek.Sunday);
 155                                 TimeZoneInfo.TransitionTime e1 = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,4,0,0), 10, 2, DayOfWeek.Sunday);
 156                                 TimeZoneInfo.AdjustmentRule r1 = TimeZoneInfo.AdjustmentRule.CreateAdjustmentRule (new DateTime (2000,1,1), new DateTime (2005,1,1), new TimeSpan (1,0,0), s1, e1);
 157                                 TimeZoneInfo.TransitionTime s2 = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,4,0,0), 2, 2, DayOfWeek.Sunday);
 158                                 TimeZoneInfo.TransitionTime e2 = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,4,0,0), 11, 2, DayOfWeek.Sunday);
 159                                 TimeZoneInfo.AdjustmentRule r2 = TimeZoneInfo.AdjustmentRule.CreateAdjustmentRule (new DateTime (2004,1,1), new DateTime (2007,1,1), new TimeSpan (1,0,0), s2, e2);
 160                                 TimeZoneInfo.CreateCustomTimeZone ("mytimezone", new TimeSpan (6,0,0),null,null,null,new TimeZoneInfo.AdjustmentRule[] {r1, r2});
 161                         }
 162
 163                         [Test]
 164                         [ExpectedException (typeof (InvalidTimeZoneException))]
 165                         public void RulesNotOrdered ()
 166                         {
 167                                 TimeZoneInfo.TransitionTime s1 = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,4,0,0), 3, 2, DayOfWeek.Sunday);
 168                                 TimeZoneInfo.TransitionTime e1 = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,4,0,0), 10, 2, DayOfWeek.Sunday);
 169                                 TimeZoneInfo.AdjustmentRule r1 = TimeZoneInfo.AdjustmentRule.CreateAdjustmentRule (new DateTime (2000,1,1), new DateTime (2005,1,1), new TimeSpan (1,0,0), s1, e1);
 170                                 TimeZoneInfo.TransitionTime s2 = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,4,0,0), 2, 2, DayOfWeek.Sunday);
 171                                 TimeZoneInfo.TransitionTime e2 = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,4,0,0), 11, 2, DayOfWeek.Sunday);
 172                                 TimeZoneInfo.AdjustmentRule r2 = TimeZoneInfo.AdjustmentRule.CreateAdjustmentRule (new DateTime (2006,1,1), new DateTime (2007,1,1), new TimeSpan (1,0,0), s2, e2);
 173                                 TimeZoneInfo.CreateCustomTimeZone ("mytimezone", new TimeSpan (6,0,0),null,null,null,new TimeZoneInfo.AdjustmentRule[] {r2, r1});
 174                         }
 175
 176                         [Test]
 177                         [ExpectedException (typeof (InvalidTimeZoneException))]
 178                         public void OffsetOutOfRange ()
 179                         {
 180                                 TimeZoneInfo.TransitionTime startTransition = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,4,0,0), 3, 2, DayOfWeek.Sunday);
 181                                 TimeZoneInfo.TransitionTime endTransition = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,4,0,0), 10, 2, DayOfWeek.Sunday);
 182                                 TimeZoneInfo.AdjustmentRule rule = TimeZoneInfo.AdjustmentRule.CreateAdjustmentRule (new DateTime (2000,1,1), new DateTime (2005,1,1), new TimeSpan (3,0,0), startTransition, endTransition);
 183                                 TimeZoneInfo.CreateCustomTimeZone ("mytimezone", new TimeSpan (12,0,0),null,null,null,new TimeZoneInfo.AdjustmentRule[] {rule});
 184                         }
 185
 186                         [Test]
 187                         [ExpectedException (typeof (InvalidTimeZoneException))]
 188                         public void NullRule ()
 189                         {
 190                                 TimeZoneInfo.CreateCustomTimeZone ("mytimezone", new TimeSpan (12,0,0),null,null,null,new TimeZoneInfo.AdjustmentRule[] {null});
 191                         }
 192
 193                         [Test]
 194                         [ExpectedException (typeof (InvalidTimeZoneException))]
 195                         public void MultiplesRulesForDate ()
 196                         {
 197                                 TimeZoneInfo.TransitionTime s1 = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,4,0,0), 3, 2, DayOfWeek.Sunday);
 198                                 TimeZoneInfo.TransitionTime e1 = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,4,0,0), 10, 2, DayOfWeek.Sunday);
 199                                 TimeZoneInfo.AdjustmentRule r1 = TimeZoneInfo.AdjustmentRule.CreateAdjustmentRule (new DateTime (2000,1,1), new DateTime (2005,1,1), new TimeSpan (1,0,0), s1, e1);
 200                                 TimeZoneInfo.TransitionTime s2 = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,4,0,0), 2, 2, DayOfWeek.Sunday);
 201                                 TimeZoneInfo.TransitionTime e2 = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,4,0,0), 11, 2, DayOfWeek.Sunday);
 202                                 TimeZoneInfo.AdjustmentRule r2 = TimeZoneInfo.AdjustmentRule.CreateAdjustmentRule (new DateTime (2005,1,1), new DateTime (2007,1,1), new TimeSpan (1,0,0), s2, e2);
 203                                 TimeZoneInfo.CreateCustomTimeZone ("mytimezone", new TimeSpan (6,0,0),null,null,null,new TimeZoneInfo.AdjustmentRule[] {r1, r2});
 204                         }
 205
 206                         [Test]
 207                         public void SupportsDaylightSavingTime_NonEmptyAdjustmentRule ()
 208                         {
 209                                 TimeZoneInfo.TransitionTime s1 = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,4,0,0), 3, 2, DayOfWeek.Sunday);
 210                                 TimeZoneInfo.TransitionTime e1 = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,4,0,0), 10, 2, DayOfWeek.Sunday);
 211                                 TimeZoneInfo.AdjustmentRule r1 = TimeZoneInfo.AdjustmentRule.CreateAdjustmentRule (new DateTime (2000,1,1), new DateTime (2005,1,1), new TimeSpan (1,0,0), s1, e1);
 212                                 TimeZoneInfo tz = TimeZoneInfo.CreateCustomTimeZone ("mytimezone", new TimeSpan (6,0,0),null,null,null,new TimeZoneInfo.AdjustmentRule[] {r1});
 213                                 Assert.IsTrue (tz.SupportsDaylightSavingTime);
 214                         }
 215
 216                         [Test]
 217                         public void SupportsDaylightSavingTime_EmptyAdjustmentRule ()
 218                         {
 219                                 TimeZoneInfo tz = TimeZoneInfo.CreateCustomTimeZone ("mytimezone", new TimeSpan (6,0,0),null,null,null,null);
 220                                 Assert.IsFalse (tz.SupportsDaylightSavingTime);
 221                         }
 222
 223                         [Test]
 224                         public void SupportsDaylightSavingTime_NonEmptyAdjustmentRule_DisableDaylightSavingTime ()
 225                         {
 226                                 TimeZoneInfo.TransitionTime s1 = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,4,0,0), 3, 2, DayOfWeek.Sunday);
 227                                 TimeZoneInfo.TransitionTime e1 = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,4,0,0), 10, 2, DayOfWeek.Sunday);
 228                                 TimeZoneInfo.AdjustmentRule r1 = TimeZoneInfo.AdjustmentRule.CreateAdjustmentRule (new DateTime (2000,1,1), new DateTime (2005,1,1), new TimeSpan (1,0,0), s1, e1);
 229                                 TimeZoneInfo tz = TimeZoneInfo.CreateCustomTimeZone ("mytimezone", new TimeSpan (6,0,0),null,null,null,new TimeZoneInfo.AdjustmentRule[] {r1}, true);
 230                                 Assert.IsFalse (tz.SupportsDaylightSavingTime);
 231                         }
 232
 233                         [Test]
 234                         public void SupportsDaylightSavingTime_EmptyAdjustmentRule_DisableDaylightSavingTime ()
 235                         {
 236                                 TimeZoneInfo tz = TimeZoneInfo.CreateCustomTimeZone ("mytimezone", new TimeSpan (6,0,0),null,null,null,null,true);
 237                                 Assert.IsFalse (tz.SupportsDaylightSavingTime);
 238                         }
 239                 }
 240
 241                 [TestFixture]
 242                 public class IsDaylightSavingTimeTests
 243                 {
 244                         TimeZoneInfo london;
 245
 246                         [SetUp]
 247                         public void CreateTimeZones ()
 248                         {
 249                                 TimeZoneInfo.TransitionTime start = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,1,0,0), 3, 5, DayOfWeek.Sunday);
 250                                 TimeZoneInfo.TransitionTime end = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,2,0,0), 10, 5, DayOfWeek.Sunday);
 251                                 TimeZoneInfo.AdjustmentRule rule = TimeZoneInfo.AdjustmentRule.CreateAdjustmentRule (DateTime.MinValue.Date, DateTime.MaxValue.Date, new TimeSpan (1,0,0), start, end);
 252                                 london = TimeZoneInfo.CreateCustomTimeZone ("Europe/London", new TimeSpan (0), "Europe/London", "British Standard Time", "British Summer Time", new TimeZoneInfo.AdjustmentRule [] {rule});
 253                         }
 254
 255                         [Test]
 256                         public void NoDSTInUTC ()
 257                         {
 258                                 DateTime june01 = new DateTime (2007, 06, 01);
 259                                 Assert.IsFalse (TimeZoneInfo.Utc.IsDaylightSavingTime (june01));
 260                         }
 261
 262                         [Test]
 263                         public void DSTInLondon ()
 264                         {
 265                                 if (Environment.OSVersion.Platform != PlatformID.Unix)
 266                                         Assert.Ignore ("Not running on Unix.");
 267                                 DateTime june01 = new DateTime (2007, 06, 01);
 268                                 DateTime xmas = new DateTime (2007, 12, 25);
 269                                 Assert.IsTrue (london.IsDaylightSavingTime (june01), "June 01 is DST in London");
 270                                 Assert.IsFalse (london.IsDaylightSavingTime (xmas), "Xmas is not DST in London");
 271                         }
 272
 273                         [Test]
 274                         public void DSTTransisions ()
 275                         {
 276                                 if (Environment.OSVersion.Platform != PlatformID.Unix)
 277                                         Assert.Ignore ("Not running on Unix.");
 278                                 DateTime beforeDST = new DateTime (2007, 03, 25, 0, 59, 59, DateTimeKind.Unspecified);
 279                                 DateTime startDST = new DateTime (2007, 03, 25, 2, 0, 0, DateTimeKind.Unspecified);
 280                                 DateTime endDST = new DateTime (2007, 10, 28, 1, 59, 59, DateTimeKind.Unspecified);
 281                                 DateTime afterDST = new DateTime (2007, 10, 28, 2, 0, 0, DateTimeKind.Unspecified);
 282                                 Assert.IsFalse (london.IsDaylightSavingTime (beforeDST), "Just before DST");
 283                                 Assert.IsTrue (london.IsDaylightSavingTime (startDST), "the first seconds of DST");
 284                                 Assert.IsFalse (london.IsDaylightSavingTime (endDST), "The last seconds of DST");
 285                                 Assert.IsFalse (london.IsDaylightSavingTime (afterDST), "Just after DST");
 286                         }
 287
 288                         [Test]
 289                         public void DSTTransisionsUTC ()
 290                         {
 291                                 DateTime beforeDST = new DateTime (2007, 03, 25, 0, 59, 59, DateTimeKind.Utc);
 292                                 DateTime startDST = new DateTime (2007, 03, 25, 1, 0, 0, DateTimeKind.Utc);
 293                                 DateTime endDST = new DateTime (2007, 10, 28, 0, 59, 59, DateTimeKind.Utc);
 294                                 DateTime afterDST = new DateTime (2007, 10, 28, 1, 0, 0, DateTimeKind.Utc);
 295                                 Assert.IsFalse (london.IsDaylightSavingTime (beforeDST), "Just before DST");
 296                                 Assert.IsTrue (london.IsDaylightSavingTime (startDST), "the first seconds of DST");
 297                                 Assert.IsTrue (london.IsDaylightSavingTime (endDST), "The last seconds of DST");
 298                                 Assert.IsFalse (london.IsDaylightSavingTime (afterDST), "Just after DST");
 299                         }
 300
 301                 #if SLOW_TESTS
 302                         [Test]
 303                         public void MatchTimeZoneBehavior ()
 304                         {
 305                                 TimeZone tzone = TimeZone.CurrentTimeZone;
 306                                 TimeZoneInfo local = TimeZoneInfo.Local;
 307                                 for (DateTime date = new DateTime (2007, 01, 01, 0, 0, 0, DateTimeKind.Local); date < new DateTime (2007, 12, 31, 23, 59, 59); date += new TimeSpan (0,1,0)) {
 308                                         date = DateTime.SpecifyKind (date, DateTimeKind.Local);
 309                                         if (local.IsInvalidTime (date))
 310                                                 continue;
 311                                         Assert.IsTrue (tzone.IsDaylightSavingTime (date) == local.IsDaylightSavingTime (date));
 312                                 }
 313                         }
 314                 #endif
 315                         [Test (Description="Description xambug #17155")]
 316                         public void AdjustmentRuleAfterNewYears ()
 317                         {
 318                                 TimeZoneInfo tz;
 319                                 if (Environment.OSVersion.Platform == PlatformID.Unix)
 320                                         tz = TimeZoneInfo.FindSystemTimeZoneById ("Pacific/Auckland"); // *nix
 321                                 else
 322                                         tz = TimeZoneInfo.FindSystemTimeZoneById ("New Zealand Standard Time"); // Windows
 323
 324                                 // DST start: 9/29/2013 2:00:00 AM
 325                                 // DST end: 4/6/2014 3:00:00 AM
 326                                 DateTime dt = new DateTime (2014, 1, 9, 23, 0, 0, DateTimeKind.Utc);
 327                                 Assert.IsTrue (tz.IsDaylightSavingTime (dt), "#1.1");
 328
 329                                 // DST start: 9/29/2014 2:00:00 AM
 330                                 // DST end: 4/6/2015 3:00:00 AM
 331                                 dt = new DateTime (2014, 6, 9, 23, 0, 0, DateTimeKind.Utc);
 332                                 Assert.IsFalse (tz.IsDaylightSavingTime (dt), "#2.1");
 333
 334                                 // DST start: 9/29/2014 2:00:00 AM
 335                                 // DST end: 4/6/2015 3:00:00 AM
 336                                 dt = new DateTime (2014, 10, 9, 23, 0, 0, DateTimeKind.Utc);
 337                                 Assert.IsTrue (tz.IsDaylightSavingTime (dt), "#3.1");
 338                         }
 339
 340                         [Test] //Covers #26008
 341                         public void DSTWithFloatingDateRule ()
 342                         {
 343                                 // Construct a custom time zone where daylight saving time starts on the
 344                                 // 2nd Sunday in March.
 345                                 var transitionToDaylight = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1, 1, 1, 2, 0, 0), 3, 2, DayOfWeek.Sunday);
 346                                 var transitionToStandard = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1, 1, 1, 2, 0, 0), 11, 1, DayOfWeek.Sunday);
 347                                 var adjustment = TimeZoneInfo.AdjustmentRule.CreateAdjustmentRule (DateTime.MinValue.Date, DateTime.MaxValue.Date, new TimeSpan (1, 0, 0), transitionToDaylight, transitionToStandard);
 348                                 var timeZone = TimeZoneInfo.CreateCustomTimeZone ("BugCheck", new TimeSpan (-8, 0, 0), "Testing", "Testing Standard", "Testing Daylight", new TimeZoneInfo.AdjustmentRule [] { adjustment });
 349                                 // See if March 7, 2014 is listed as being during daylight saving time.
 350                                 // If it is DST, then the runtime has the bug that we are looking for.
 351                                 Assert.IsFalse (timeZone.IsDaylightSavingTime (new DateTime (2014, 3, 7, 12, 0, 0, DateTimeKind.Unspecified)));
 352                         }
 353
 354                         [Test] //Covers #25050
 355                         public void TestAthensDST ()
 356                         {
 357                                 TimeZoneInfo tzi = TimeZoneInfo.FindSystemTimeZoneById ("Europe/Athens");
 358                                 var date = new DateTime (2014, 3, 30 , 2, 0, 0);
 359                                 Assert.IsFalse (tzi.IsDaylightSavingTime (date));
 360                                 Assert.AreEqual (new TimeSpan (2,0,0), tzi.GetUtcOffset (date));
 361                         }
 362                 }
 363
 364                 [TestFixture]
 365                 public class ConvertTimeTests_LocalUtc : ConvertTimeTests
 366                 {
 367                         static TimeZoneInfo oldLocal;
 368
 369                         [SetUp]
 370                         public void SetLocal ()
 371                         {
 372                                 base.CreateTimeZones ();
 373
 374                                 oldLocal = TimeZoneInfo.Local;
 375                                 TimeZoneInfoTest.SetLocal (TimeZoneInfo.Utc);
 376                         }
 377
 378                         [TearDown]
 379                         public void RestoreLocal ()
 380                         {
 381                                 TimeZoneInfoTest.SetLocal (oldLocal);
 382                         }
 383                 }
 384
 385                 [TestFixture]
 386                 public class ConvertTimeTests
 387                 {
 388                         TimeZoneInfo london;
 389
 390                         [SetUp]
 391                         public void CreateTimeZones ()
 392                         {
 393                                 TimeZoneInfo.TransitionTime start = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,1,0,0), 3, 5, DayOfWeek.Sunday);
 394                                 TimeZoneInfo.TransitionTime end = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,2,0,0), 10, 5, DayOfWeek.Sunday);
 395                                 TimeZoneInfo.AdjustmentRule rule = TimeZoneInfo.AdjustmentRule.CreateAdjustmentRule (DateTime.MinValue.Date, DateTime.MaxValue.Date, new TimeSpan (1,0,0), start, end);
 396                                 london = TimeZoneInfo.CreateCustomTimeZone ("Europe/London", new TimeSpan (0), "Europe/London", "British Standard Time", "British Summer Time", new TimeZoneInfo.AdjustmentRule [] {rule});
 397                         }
 398
 399                         [Test]
 400                         [ExpectedException (typeof (ArgumentException))]
 401                         public void ConvertFromUtc_KindIsLocalException ()
 402                         {
 403                                 if (Environment.OSVersion.Platform != PlatformID.Unix)
 404                                         throw new ArgumentException ();
 405                                 TimeZoneInfo.ConvertTimeFromUtc (new DateTime (2007, 5, 3, 11, 8, 0, DateTimeKind.Local), TimeZoneInfo.Local);
 406                         }
 407
 408                         [Test]
 409                         [ExpectedException (typeof (ArgumentNullException))]
 410                         public void ConvertFromUtc_DestinationTimeZoneIsNullException ()
 411                         {
 412                                 TimeZoneInfo.ConvertTimeFromUtc (new DateTime (2007, 5, 3, 11, 8, 0), null);
 413                         }
 414
 415                         [Test]
 416                         public void ConvertFromUtc_DestinationIsUTC ()
 417                         {
 418                                 DateTime now = DateTime.UtcNow;
 419                                 DateTime converted = TimeZoneInfo.ConvertTimeFromUtc (now, TimeZoneInfo.Utc);
 420                                 Assert.AreEqual (now, converted);
 421                         }
 422
 423                         [Test]
 424                         public void ConvertFromUTC_ConvertInWinter ()
 425                         {
 426                                 if (Environment.OSVersion.Platform != PlatformID.Unix)
 427                                         Assert.Ignore ("Not running on Unix.");
 428                                 DateTime utc = new DateTime (2007, 12, 25, 12, 0, 0);
 429                                 DateTime converted = TimeZoneInfo.ConvertTimeFromUtc (utc, london);
 430                                 Assert.AreEqual (utc, converted);
 431                         }
 432
 433                         [Test]
 434                         public void ConvertFromUtc_ConvertInSummer ()
 435                         {
 436                                 if (Environment.OSVersion.Platform != PlatformID.Unix)
 437                                         Assert.Ignore ("Not running on Unix.");
 438                                 DateTime utc = new DateTime (2007, 06, 01, 12, 0, 0);
 439                                 DateTime converted = TimeZoneInfo.ConvertTimeFromUtc (utc, london);
 440                                 Assert.AreEqual (utc + new TimeSpan (1,0,0), converted);
 441                         }
 442
 443                         [Test]
 444                         public void ConvertToUTC_KindIsUtc ()
 445                         {
 446                                 DateTime now = DateTime.UtcNow;
 447                                 Assert.AreEqual (now.Kind, DateTimeKind.Utc);
 448                                 DateTime converted = TimeZoneInfo.ConvertTimeToUtc (now);
 449                                 Assert.AreEqual (now, converted);
 450                         }
 451
 452                         [Test]
 453                         [ExpectedException (typeof (ArgumentException))]
 454                         public void ConvertToUTC_KindIsUTCButSourceIsNot ()
 455                         {
 456                                 TimeZoneInfo.ConvertTimeToUtc (new DateTime (2007, 5, 3, 12, 8, 0, DateTimeKind.Utc), london);
 457                         }
 458
 459                         [Test]
 460                         [ExpectedException (typeof (ArgumentException))]
 461                         public void ConvertToUTC_KindIsLocalButSourceIsNot ()
 462                         {
 463                                 if (Environment.OSVersion.Platform != PlatformID.Unix)
 464                                         throw new ArgumentException ();
 465                                 TimeZoneInfo.ConvertTimeToUtc (new DateTime (2007, 5, 3, 12, 8, 0, DateTimeKind.Local), london);
 466                         }
 467
 468                         [Test]
 469                         [ExpectedException (typeof (ArgumentException))]
 470                         public void ConvertToUTC_InvalidDate ()
 471                         {
 472                                 TimeZoneInfo.ConvertTimeToUtc (new DateTime (2007, 3, 25, 1, 30, 0), london);
 473                         }
 474
 475                         [Test]
 476                         [ExpectedException (typeof (ArgumentNullException))]
 477                         public void ConvertToUTC_SourceIsNull ()
 478                         {
 479                                 TimeZoneInfo.ConvertTimeToUtc (new DateTime (2007, 5, 3, 12, 16, 0), null);
 480                         }
 481
 482                 #if SLOW_TESTS
 483                         [Test]
 484                         public void ConvertToUtc_MatchDateTimeBehavior ()
 485                         {
 486                                 for (DateTime date = new DateTime (2007, 01, 01, 0, 0, 0); date < new DateTime (2007, 12, 31, 23, 59, 59); date += new TimeSpan (0,1,0)) {
 487                                         Assert.AreEqual (TimeZoneInfo.ConvertTimeToUtc (date), date.ToUniversalTime ());
 488                                 }
 489                         }
 490                 #endif
 491
 492                         [Test]
 493                         public void ConvertFromToUtc ()
 494                         {
 495                                 if (Environment.OSVersion.Platform != PlatformID.Unix)
 496                                         Assert.Ignore ("Not running on Unix.");
 497                                 DateTime utc = DateTime.UtcNow;
 498                                 Assert.AreEqual (utc.Kind, DateTimeKind.Utc);
 499                                 DateTime converted = TimeZoneInfo.ConvertTimeFromUtc (utc, london);
 500                                 Assert.AreEqual (converted.Kind, DateTimeKind.Unspecified);
 501                                 DateTime back = TimeZoneInfo.ConvertTimeToUtc (converted, london);
 502                                 Assert.AreEqual (back.Kind, DateTimeKind.Utc);
 503                                 Assert.AreEqual (utc, back);
 504
 505                         }
 506
 507                         [Test]
 508                         public void ConvertTimeToUtc_Overflow ()
 509                         {
 510                                 var res = TimeZoneInfo.ConvertTimeToUtc (new DateTime (0));
 511                                 Assert.AreEqual (res.Kind, DateTimeKind.Utc, "#1");
 512
 513                                 res = TimeZoneInfo.ConvertTimeToUtc (DateTime.MaxValue);
 514                                 Assert.AreEqual (res.Kind, DateTimeKind.Utc, "#2");
 515                         }
 516
 517                         [Test]
 518                         public void ConvertFromToUtc_Utc ()
 519                         {
 520                                 DateTime utc = DateTime.UtcNow;
 521                                 Assert.AreEqual (utc.Kind, DateTimeKind.Utc);
 522                                 DateTime converted = TimeZoneInfo.ConvertTimeFromUtc (utc, TimeZoneInfo.Utc);
 523                                 Assert.AreEqual (DateTimeKind.Utc, converted.Kind);
 524                                 DateTime back = TimeZoneInfo.ConvertTimeToUtc (converted, TimeZoneInfo.Utc);
 525                                 Assert.AreEqual (back.Kind, DateTimeKind.Utc);
 526                                 Assert.AreEqual (utc, back);
 527                         }
 528
 529                         [Test]
 530                         public void ConvertFromToLocal ()
 531                         {
 532                                 DateTime utc = DateTime.UtcNow;
 533                                 Assert.AreEqual (utc.Kind, DateTimeKind.Utc);
 534                                 DateTime converted = TimeZoneInfo.ConvertTimeFromUtc (utc, TimeZoneInfo.Local);
 535                                 var expectedKind = (TimeZoneInfo.Local == TimeZoneInfo.Utc)? DateTimeKind.Utc : DateTimeKind.Local;
 536                                 Assert.AreEqual (expectedKind, converted.Kind);
 537                                 DateTime back = TimeZoneInfo.ConvertTimeToUtc (converted, TimeZoneInfo.Local);
 538                                 Assert.AreEqual (back.Kind, DateTimeKind.Utc);
 539                                 Assert.AreEqual (utc, back);
 540                         }
 541
 542                         [Test]
 543                         public void ConvertToTimeZone ()
 544                         {
 545                                 if (Environment.OSVersion.Platform != PlatformID.Unix)
 546                                         Assert.Ignore ("Not running on Unix.");
 547
 548                                 TimeZoneInfo.ConvertTime (DateTime.Now, TimeZoneInfo.FindSystemTimeZoneById("Pacific/Auckland"));
 549                         }
 550
 551                         [Test]
 552                         [ExpectedException (typeof (ArgumentNullException))]
 553                         public void ConvertTime_DateTime_TimeZoneInfo_DestinationTimeZoneIsNull ()
 554                         {
 555                                 TimeZoneInfo.ConvertTime (DateTime.Now, null);
 556                         }
 557
 558                         [Test]
 559                         public void ConvertTime_DateTime_TimeZoneInfo_DateTimeKindMatch ()
 560                         {
 561                                 var sdt = new DateTime (2014, 1, 9, 23, 0, 0, DateTimeKind.Utc);
 562                                 var ddt = TimeZoneInfo.ConvertTime (sdt, TimeZoneInfo.Utc);
 563                                 Assert.AreEqual (ddt.Kind, sdt.Kind, "#1.1");
 564                                 Assert.AreEqual (ddt.Kind, DateTimeKind.Utc, "#1.2");
 565
 566                                 sdt = new DateTime (2014, 1, 9, 23, 0, 0, DateTimeKind.Local);
 567                                 ddt = TimeZoneInfo.ConvertTime (sdt, TimeZoneInfo.Local);
 568                                 Assert.AreEqual (ddt.Kind, sdt.Kind, "#2.1");
 569                                 Assert.AreEqual (ddt.Kind, DateTimeKind.Local, "#2.2");
 570
 571                                 sdt = new DateTime (2014, 1, 9, 23, 0, 0);
 572                                 ddt = TimeZoneInfo.ConvertTime (sdt, TimeZoneInfo.Local);
 573                                 var expectedKind = (TimeZoneInfo.Local == TimeZoneInfo.Utc)? DateTimeKind.Utc : sdt.Kind;
 574                                 Assert.AreEqual (expectedKind,  ddt.Kind, "#3.1");
 575                                 Assert.AreEqual (DateTimeKind.Unspecified, sdt.Kind, "#3.2");
 576                         }
 577
 578                         [Test]
 579                         [ExpectedException (typeof (ArgumentNullException))]
 580                         public void ConverTime_DateTime_TimeZoneInfo_TimeZoneInfo_SourceTimeZoneIsNull ()
 581                         {
 582                                 TimeZoneInfo.ConvertTime (DateTime.Now, null, TimeZoneInfo.Local);
 583                         }
 584
 585                         [Test]
 586                         [ExpectedException (typeof (ArgumentNullException))]
 587                         public void ConverTime_DateTime_TimeZoneInfo_TimeZoneInfo_DestinationTimeZoneIsNull ()
 588                         {
 589                                 TimeZoneInfo.ConvertTime (DateTime.Now, TimeZoneInfo.Utc, null);
 590                         }
 591
 592                         [Test (Description="Fix for xambug https://bugzilla.xamarin.com/show_bug.cgi?id=17155")]
 593                         public void ConvertTime_AdjustmentRuleAfterNewYears ()
 594                         {
 595                                 TimeZoneInfo tz;
 596                                 if (Environment.OSVersion.Platform == PlatformID.Unix)
 597                                         tz = TimeZoneInfo.FindSystemTimeZoneById ("Pacific/Auckland"); // *nix
 598                                 else
 599                                         tz = TimeZoneInfo.FindSystemTimeZoneById ("New Zealand Standard Time"); // Windows
 600
 601                                 // DST start: 9/29/2013 2:00:00 AM
 602                                 // DST end: 4/6/2014 3:00:00 AM
 603                                 DateTime sdt = new DateTime (2014, 1, 9, 23, 0, 0, DateTimeKind.Utc);
 604                                 DateTime ddt = TimeZoneInfo.ConvertTime (sdt, tz);
 605                                 Assert.AreEqual (10, ddt.Day, "#1.1");
 606                                 Assert.AreEqual (1, ddt.Month, "#1.2");
 607                                 Assert.AreEqual (2014, ddt.Year, "#1.3");
 608                                 Assert.AreEqual (12, ddt.Hour, "#1.4");
 609                                 Assert.AreEqual (0, ddt.Minute, "#1.5");
 610                                 Assert.AreEqual (0, ddt.Second, "#1.6");
 611
 612                                 // DST start: 9/29/2014 2:00:00 AM
 613                                 // DST end: 4/6/2015 3:00:00 AM
 614                                 sdt = new DateTime (2014, 6, 9, 23, 0, 0, DateTimeKind.Utc);
 615                                 ddt = TimeZoneInfo.ConvertTime (sdt, tz);
 616                                 Assert.AreEqual (10, ddt.Day, "#2.1");
 617                                 Assert.AreEqual (6, ddt.Month, "#2.2");
 618                                 Assert.AreEqual (2014, ddt.Year, "#2.3");
 619                                 Assert.AreEqual (11, ddt.Hour, "#2.4");
 620                                 Assert.AreEqual (0, ddt.Minute, "#2.5");
 621                                 Assert.AreEqual (0, ddt.Second, "#2.6");
 622
 623                                 // DST start: 9/29/2014 2:00:00 AM
 624                                 // DST end: 4/6/2015 3:00:00 AM
 625                                 sdt = new DateTime (2014, 10, 9, 23, 0, 0, DateTimeKind.Utc);
 626                                 ddt = TimeZoneInfo.ConvertTime (sdt, tz);
 627                                 Assert.AreEqual (10, ddt.Day, "#3.1");
 628                                 Assert.AreEqual (10, ddt.Month, "#3.2");
 629                                 Assert.AreEqual (2014, ddt.Year, "#3.3");
 630                                 Assert.AreEqual (12, ddt.Hour, "#3.4");
 631                                 Assert.AreEqual (0, ddt.Minute, "#3.5");
 632                                 Assert.AreEqual (0, ddt.Second, "#3.6");
 633                         }
 634
 635                         [Test (Description="Fix the bug https://bugzilla.xamarin.com/show_bug.cgi?id=1849")]
 636                         public void ConvertTime_AjustmentConvertTimeWithSourceTimeZone () {
 637
 638                                 TimeZoneInfo easternTimeZone;
 639                                 TimeZoneInfo pacificTimeZone;
 640
 641                                 if (Environment.OSVersion.Platform == PlatformID.Unix) {
 642                                         // *nix
 643                                         easternTimeZone = TimeZoneInfo.FindSystemTimeZoneById ("US/Eastern");
 644                                         pacificTimeZone = TimeZoneInfo.FindSystemTimeZoneById ("US/Pacific");
 645                                 }
 646                                 else {
 647                                         // Windows
 648                                         easternTimeZone = TimeZoneInfo.FindSystemTimeZoneById ("Eastern Standard Time");
 649                                         pacificTimeZone = TimeZoneInfo.FindSystemTimeZoneById ("Pacific Standard Time");
 650                                 }
 651
 652                                 DateTime lastMidnight = new DateTime (new DateTime (2012, 06, 13).Ticks, DateTimeKind.Unspecified);
 653                                 DateTime lastMidnightAsEST = TimeZoneInfo.ConvertTime (lastMidnight, pacificTimeZone, easternTimeZone);
 654                                 DateTime lastMidnightAsPST = TimeZoneInfo.ConvertTime (lastMidnightAsEST, easternTimeZone, pacificTimeZone);
 655
 656                                 // Last midnight in PST as EST should be 3AM
 657                                 DateTime expectedDate = new DateTime (2012, 06, 13, 3, 0, 0);
 658
 659                                 Assert.AreEqual (expectedDate, lastMidnightAsEST);
 660                                 Assert.AreEqual (lastMidnight, lastMidnightAsPST);
 661                         }
 662                 }
 663
 664                 [TestFixture]
 665                 public class IsInvalidTimeTests
 666                 {
 667                         TimeZoneInfo london;
 668
 669                         [SetUp]
 670                         public void CreateTimeZones ()
 671                         {
 672                                 TimeZoneInfo.TransitionTime start = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,1,0,0), 3, 5, DayOfWeek.Sunday);
 673                                 TimeZoneInfo.TransitionTime end = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,2,0,0), 10, 5, DayOfWeek.Sunday);
 674                                 TimeZoneInfo.AdjustmentRule rule = TimeZoneInfo.AdjustmentRule.CreateAdjustmentRule (DateTime.MinValue.Date, DateTime.MaxValue.Date, new TimeSpan (1,0,0), start, end);
 675                                 london = TimeZoneInfo.CreateCustomTimeZone ("Europe/London", new TimeSpan (0), "Europe/London", "British Standard Time", "British Summer Time", new TimeZoneInfo.AdjustmentRule [] {rule});
 676                         }
 677
 678                 #if SLOW_TESTS
 679                         [Test]
 680                         public void UTCDate ()
 681                         {
 682                                 for (DateTime date = new DateTime (2007, 01, 01, 0, 0, 0); date < new DateTime (2007, 12, 31, 23, 59, 59); date += new TimeSpan (0,1,0)) {
 683                                         date = DateTime.SpecifyKind (date, DateTimeKind.Utc);
 684                                         Assert.IsFalse (london.IsInvalidTime (date));
 685                                 }
 686                         }
 687                 #endif
 688                         [Test]
 689                         public void InvalidDates ()
 690                         {
 691                                 Assert.IsFalse (london.IsInvalidTime (new DateTime (2007, 03, 25, 0, 59, 59)));
 692                                 Assert.IsTrue (london.IsInvalidTime (new DateTime (2007, 03, 25, 1, 0, 0)));
 693                                 Assert.IsTrue (london.IsInvalidTime (new DateTime (2007, 03, 25, 1, 59, 59)));
 694                                 Assert.IsFalse (london.IsInvalidTime (new DateTime (2007, 03, 25, 2, 0, 0)));
 695                         }
 696                 }
 697
 698                 [TestFixture]
 699                 public class IsAmbiguousTimeTests
 700                 {
 701                         TimeZoneInfo london;
 702
 703                         [SetUp]
 704                         public void CreateTimeZones ()
 705                         {
 706                                 TimeZoneInfo.TransitionTime start = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,1,0,0), 3, 5, DayOfWeek.Sunday);
 707                                 TimeZoneInfo.TransitionTime end = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,2,0,0), 10, 5, DayOfWeek.Sunday);
 708                                 TimeZoneInfo.AdjustmentRule rule = TimeZoneInfo.AdjustmentRule.CreateAdjustmentRule (DateTime.MinValue.Date, DateTime.MaxValue.Date, new TimeSpan (1,0,0), start, end);
 709                                 london = TimeZoneInfo.CreateCustomTimeZone ("Europe/London", new TimeSpan (0), "Europe/London", "British Standard Time", "British Summer Time", new TimeZoneInfo.AdjustmentRule [] {rule});
 710                         }
 711
 712                         [Test]
 713                         public void AmbiguousDates ()
 714                         {
 715                                 if (Environment.OSVersion.Platform != PlatformID.Unix)
 716                                         Assert.Ignore ("Not running on Unix.");
 717                                 Assert.IsFalse (london.IsAmbiguousTime (new DateTime (2007, 10, 28, 1, 0, 0)));
 718                                 Assert.IsTrue (london.IsAmbiguousTime (new DateTime (2007, 10, 28, 1, 0, 1)));
 719                                 Assert.IsTrue (london.IsAmbiguousTime (new DateTime (2007, 10, 28, 2, 0, 0)));
 720                                 Assert.IsFalse (london.IsAmbiguousTime (new DateTime (2007, 10, 28, 2, 0, 1)));
 721                         }
 722
 723                         [Test]
 724                         public void AmbiguousUTCDates ()
 725                         {
 726                                 if (Environment.OSVersion.Platform != PlatformID.Unix)
 727                                         Assert.Ignore ("Not running on Unix.");
 728                                 Assert.IsFalse (london.IsAmbiguousTime (new DateTime (2007, 10, 28, 0, 0, 0, DateTimeKind.Utc)));
 729                                 Assert.IsTrue (london.IsAmbiguousTime (new DateTime (2007, 10, 28, 0, 0, 1, DateTimeKind.Utc)));
 730                                 Assert.IsTrue (london.IsAmbiguousTime (new DateTime (2007, 10, 28, 0, 59, 59, DateTimeKind.Utc)));
 731                                 Assert.IsFalse (london.IsAmbiguousTime (new DateTime (2007, 10, 28, 1, 0, 0, DateTimeKind.Utc)));
 732                         }
 733
 734                 #if SLOW_TESTS
 735                         [Test]
 736                         public void AmbiguousInUTC ()
 737                         {
 738                                 for (DateTime date = new DateTime (2007, 01, 01, 0, 0, 0); date < new DateTime (2007, 12, 31, 23, 59, 59); date += new TimeSpan (0,1,0)) {
 739                                         Assert.IsFalse (TimeZoneInfo.Utc.IsAmbiguousTime (date));
 740                                 }
 741                         }
 742                 #endif
 743                 }
 744
 745                 [TestFixture]
 746                 public class GetSystemTimeZonesTests
 747                 {
 748                         [Test]
 749                         public void Identity ()
 750                         {
 751                                 Assert.AreSame (TimeZoneInfo.GetSystemTimeZones (), TimeZoneInfo.GetSystemTimeZones ());
 752                         }
 753
 754                         [Test]
 755                         public void NotEmpty ()
 756                         {
 757                                 if (Environment.OSVersion.Platform != PlatformID.Unix)
 758                                         Assert.Ignore ("Not running on Unix.");
 759                                 global::System.Collections.ObjectModel.ReadOnlyCollection<TimeZoneInfo> systemTZ = TimeZoneInfo.GetSystemTimeZones ();
 760                                 Assert.IsNotNull(systemTZ, "SystemTZ is null");
 761                                 Assert.IsFalse (systemTZ.Count == 0, "SystemTZ is empty");
 762                         }
 763
 764                         [Test]
 765                         public void ContainsBrussels ()
 766                         {
 767                                 if (Environment.OSVersion.Platform != PlatformID.Unix)
 768                                         Assert.Ignore ("Not running on Unix.");
 769                                 global::System.Collections.ObjectModel.ReadOnlyCollection<TimeZoneInfo> systemTZ = TimeZoneInfo.GetSystemTimeZones ();
 770                                 foreach (TimeZoneInfo tz in systemTZ) {
 771                                         if (tz.Id == "Europe/Brussels")
 772                                                 return;
 773                                 }
 774                                 Assert.Fail ("Europe/Brussels not found in SystemTZ");
 775                         }
 776
 777                         [Test]
 778                         public void ReflectionReturnsTheCorrectMethod ()
 779                         {
 780                                 var method = (MethodInfo) typeof (TimeZoneInfo).GetMember ("GetSystemTimeZones", MemberTypes.Method, BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic)[0];
 781
 782                                 var timeZones = (global::System.Collections.ObjectModel.ReadOnlyCollection<TimeZoneInfo>) method.Invoke (null, null);
 783                                 Assert.IsTrue (timeZones.Count > 0, "GetSystemTimeZones should not return an empty collection.");
 784                         }
 785                 }
 786
 787                 [TestFixture]
 788                 public class FindSystemTimeZoneByIdTests
 789                 {
 790                         [Test]
 791                         [ExpectedException (typeof (ArgumentNullException))]
 792                         public void NullId ()
 793                         {
 794                                 TimeZoneInfo.FindSystemTimeZoneById (null);
 795                         }
 796
 797                         [Test]
 798                         [ExpectedException (typeof (TimeZoneNotFoundException))]
 799                         public void NonSystemTimezone ()
 800                         {
 801                                 if (Environment.OSVersion.Platform != PlatformID.Unix)
 802                                         throw new TimeZoneNotFoundException ();
 803                                 TimeZoneInfo.FindSystemTimeZoneById ("Neverland/The_Lagoon");
 804                         }
 805
 806                         [Test]
 807                         public void FindBrusselsTZ ()
 808                         {
 809                                 if (Environment.OSVersion.Platform != PlatformID.Unix)
 810                                         Assert.Ignore ("Not running on Unix.");
 811                                 TimeZoneInfo brussels = TimeZoneInfo.FindSystemTimeZoneById ("Europe/Brussels");
 812                                 Assert.IsNotNull (brussels);
 813                         }
 814
 815                         [Test]
 816                         public void OffsetIsCorrectInKinshasa ()
 817                         {
 818                                 if (Environment.OSVersion.Platform != PlatformID.Unix)
 819                                         Assert.Ignore ("Not running on Unix.");
 820                                 TimeZoneInfo kin = TimeZoneInfo.FindSystemTimeZoneById ("Africa/Kinshasa");
 821                                 Assert.AreEqual (new TimeSpan (1,0,0), kin.BaseUtcOffset, "BaseUtcOffset in Kinshasa is not +1h");
 822                         }
 823
 824                         [Test]
 825                         public void OffsetIsCorrectInBrussels ()
 826                         {
 827                                 if (Environment.OSVersion.Platform != PlatformID.Unix)
 828                                         Assert.Ignore ("Not running on Unix.");
 829                                 TimeZoneInfo brussels = TimeZoneInfo.FindSystemTimeZoneById ("Europe/Brussels");
 830                                 Assert.AreEqual (new TimeSpan (1,0,0), brussels.BaseUtcOffset, "BaseUtcOffset for Brussels is not +1h");
 831                         }
 832
 833                         [Test]
 834                         public void NoDSTInKinshasa ()
 835                         {
 836                                 if (Environment.OSVersion.Platform != PlatformID.Unix)
 837                                         Assert.Ignore ("Not running on Unix.");
 838                                 TimeZoneInfo kin = TimeZoneInfo.FindSystemTimeZoneById ("Africa/Kinshasa");
 839                                 Assert.IsFalse (kin.SupportsDaylightSavingTime);
 840                         }
 841
 842                         [Test]
 843                         public void BrusselsSupportsDST ()
 844                         {
 845                                 if (Environment.OSVersion.Platform != PlatformID.Unix)
 846                                         Assert.Ignore ("Not running on Unix.");
 847                                 TimeZoneInfo brussels = TimeZoneInfo.FindSystemTimeZoneById ("Europe/Brussels");
 848                                 Assert.IsTrue (brussels.SupportsDaylightSavingTime);
 849                         }
 850
 851                         [Test]
 852                         public void MelbourneSupportsDST ()
 853                         {
 854                                 if (Environment.OSVersion.Platform != PlatformID.Unix)
 855                                         Assert.Ignore ("Not running on Unix.");
 856                                 TimeZoneInfo melbourne = TimeZoneInfo.FindSystemTimeZoneById ("Australia/Melbourne");
 857                                 Assert.IsTrue (melbourne.SupportsDaylightSavingTime);
 858                         }
 859
 860                         [Test]
 861                         public void RomeAndVaticanSharesTime ()
 862                         {
 863                                 if (Environment.OSVersion.Platform != PlatformID.Unix)
 864                                         Assert.Ignore ("Not running on Unix.");
 865                                 TimeZoneInfo rome = TimeZoneInfo.FindSystemTimeZoneById ("Europe/Rome");
 866                                 TimeZoneInfo vatican = TimeZoneInfo.FindSystemTimeZoneById ("Europe/Vatican");
 867                                 Assert.IsTrue (rome.HasSameRules (vatican));
 868                         }
 869
 870                         [Test]
 871                         public void FindSystemTimeZoneById_Local_Roundtrip ()
 872                         {
 873                                 Assert.AreEqual (TimeZoneInfo.Local.Id, TimeZoneInfo.FindSystemTimeZoneById (TimeZoneInfo.Local.Id).Id);
 874                         }
 875
 876                         [Test]
 877                         public void Test326 ()
 878                         {
 879                                 DateTime utc = DateTime.UtcNow;
 880                                 DateTime local = TimeZoneInfo.ConvertTime (utc, TimeZoneInfo.Utc, TimeZoneInfo.FindSystemTimeZoneById (TimeZoneInfo.Local.Id));
 881                                 Assert.AreEqual (local, utc + TimeZoneInfo.Local.GetUtcOffset (utc), "ConvertTime/Local");
 882                         }
 883
 884                 #if SLOW_TESTS
 885                         [Test]
 886                         public void BrusselsAdjustments ()
 887                         {
 888                                 TimeZoneInfo.TransitionTime start = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,2,0,0), 3, 5, DayOfWeek.Sunday);
 889                                 TimeZoneInfo.TransitionTime end = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,3,0,0), 10, 5, DayOfWeek.Sunday);
 890                                 TimeZoneInfo.AdjustmentRule rule = TimeZoneInfo.AdjustmentRule.CreateAdjustmentRule (DateTime.MinValue.Date, DateTime.MaxValue.Date, new TimeSpan (1,0,0), start, end);
 891                                 TimeZoneInfo brussels = TimeZoneInfo.CreateCustomTimeZone ("Europe/Brussels", new TimeSpan (1, 0, 0), "Europe/Brussels", "", "", new TimeZoneInfo.AdjustmentRule [] {rule});
 892
 893                                 TimeZoneInfo brussels_sys = TimeZoneInfo.FindSystemTimeZoneById ("Europe/Brussels");
 894
 895                                 for (DateTime date = new DateTime (2006, 01, 01, 0, 0, 0, DateTimeKind.Local); date < new DateTime (2007, 12, 31, 23, 59, 59); date += new TimeSpan (0,30,0)) {
 896                                         Assert.AreEqual (brussels.GetUtcOffset (date), brussels_sys.GetUtcOffset (date));
 897                                         Assert.AreEqual (brussels.IsDaylightSavingTime (date), brussels_sys.IsDaylightSavingTime (date));
 898                                 }
 899                         }
 900                 #endif
 901
 902                         [Test]
 903                         public void SubminuteDSTOffsets ()
 904                         {
 905                                 if (Environment.OSVersion.Platform != PlatformID.Unix)
 906                                         Assert.Ignore ();
 907
 908                                 var subMinuteDSTs = new string [] {
 909                                         "Europe/Dublin", // Europe/Dublin has a DST offset of 34 minutes and 39 seconds in 1916.
 910                                         "Europe/Amsterdam",
 911                                         "America/St_Johns",
 912                                         "Canada/Newfoundland",
 913                                         "Europe/Moscow",
 914                                         "Europe/Riga",
 915                                         "N/A", // testing that the test doesn't fail with inexistent TZs
 916                                 };
 917                                 foreach (var tz in subMinuteDSTs) {
 918                                         try {
 919                                                 TimeZoneInfo.FindSystemTimeZoneById (tz);
 920                                         } catch (TimeZoneNotFoundException) {
 921                                                 // ok;
 922                                         } catch (Exception ex) {
 923                                                 Assert.Fail (string.Format ("Failed to load TZ {0}: {1}", tz, ex.ToString ()));
 924                                         }
 925                                 }
 926                         }
 927                 }
 928
 929                 [TestFixture]
 930                 public class GetAmbiguousTimeOffsetsTests
 931                 {
 932                         [Test]
 933                         [ExpectedException (typeof(ArgumentException))]
 934                         public void DateIsNotAmbiguous ()
 935                         {
 936                                 if (Environment.OSVersion.Platform != PlatformID.Unix)
 937                                         throw new ArgumentException ();
 938                                 TimeZoneInfo brussels = TimeZoneInfo.FindSystemTimeZoneById ("Europe/Brussels");
 939                                 DateTime date = new DateTime (2007, 05, 11, 11, 40, 00);
 940                                 brussels.GetAmbiguousTimeOffsets (date);
 941                         }
 942
 943                         [Test]
 944                         public void AmbiguousOffsets ()
 945                         {
 946                                 if (Environment.OSVersion.Platform != PlatformID.Unix)
 947                                         Assert.Ignore ("Not running on Unix.");
 948                                 TimeZoneInfo brussels = TimeZoneInfo.FindSystemTimeZoneById ("Europe/Brussels");
 949                                 DateTime date = new DateTime (2007, 10, 28, 2, 30, 00);
 950                                 Assert.IsTrue (brussels.IsAmbiguousTime (date));
 951                                 Assert.AreEqual (2, brussels.GetAmbiguousTimeOffsets (date).Length);
 952                                 Assert.AreEqual (new TimeSpan[] {new TimeSpan (1, 0, 0), new TimeSpan (2, 0, 0)}, brussels.GetAmbiguousTimeOffsets (date));
 953                         }
 954                 }
 955
 956                 [TestFixture]
 957                 public class HasSameRulesTests
 958                 {
 959                         [Test]
 960                         public void NullAdjustments () //bnc #391011
 961                         {
 962                                 TimeZoneInfo utc = TimeZoneInfo.Utc;
 963                                 TimeZoneInfo custom = TimeZoneInfo.CreateCustomTimeZone ("Custom", new TimeSpan (0), "Custom", "Custom");
 964                                 Assert.IsTrue (utc.HasSameRules (custom));
 965                         }
 966                 }
 967
 968                 [TestFixture]
 969                 public class SerializationTests
 970                 {
 971                         [Test]
 972                         public void Serialization_Deserialization ()
 973                         {
 974                                 TimeZoneInfo.TransitionTime start = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,1,0,0), 3, 5, DayOfWeek.Sunday);
 975                                 TimeZoneInfo.TransitionTime end = TimeZoneInfo.TransitionTime.CreateFloatingDateRule (new DateTime (1,1,1,2,0,0), 10, 5, DayOfWeek.Sunday);
 976                                 TimeZoneInfo.AdjustmentRule rule = TimeZoneInfo.AdjustmentRule.CreateAdjustmentRule (DateTime.MinValue.Date, DateTime.MaxValue.Date, new TimeSpan (1,0,0), start, end);
 977                                 TimeZoneInfo london = TimeZoneInfo.CreateCustomTimeZone ("Europe/London", new TimeSpan (0), "Europe/London", "British Standard Time", "British Summer Time", new TimeZoneInfo.AdjustmentRule [] {rule});
 978                                 MemoryStream stream = new MemoryStream ();
 979                                 BinaryFormatter formatter = new BinaryFormatter ();
 980                                 formatter.Serialize (stream, london);
 981                                 stream.Position = 0;
 982                                 TimeZoneInfo deserialized = (TimeZoneInfo) formatter.Deserialize (stream);
 983                                 stream.Close ();
 984                                 stream.Dispose ();
 985                                 Assert.IsTrue (london.Equals (deserialized));
 986                         }
 987                 }
 988
 989                 [TestFixture]
 990                 public class MultipleDaylightSavingTimeTests {
 991                         private TimeZoneInfo cairo;
 992                         private DateTime dst1Start;
 993                         private DateTime dst1End;
 994                         private DateTime dst2Start;
 995                         private DateTime dst2End;
 996
 997                         private TimeSpan baseUtcOffset;
 998                         private TimeSpan dstUtcOffset;
 999                         private TimeSpan dstOffset;
1000
1001                         [SetUp]
1002                         public void CreateTimeZones ()
1003                         {
1004                                 /*
1005                                 From 1/1/2014 12:00:00 AM to 6/30/2014 12:00:00 AM
1006                                         Delta: 01:00:00
1007                                         Begins at 12:00 AM on 16 May
1008                                         Ends at 1:00 AM on 29 June
1009                                 From 7/1/2014 12:00:00 AM to 12/31/2014 12:00:00 AM
1010                                         Delta: 01:00:00
1011                                         Begins at 12:00 AM on 29 July
1012                                         Ends at 12:00 AM on 26 September
1013                                 */
1014                                 dst1Start = new DateTime (2014, 5, 16);
1015                                 dst1End = new DateTime (2014, 6, 29);
1016                                 dst2Start = new DateTime (2014, 7, 29);
1017                                 dst2End = new DateTime (2014, 9, 26);
1018
1019                                 baseUtcOffset = new TimeSpan (2, 0, 0);
1020                                 dstUtcOffset = new TimeSpan (3, 0, 0);
1021                                 dstOffset = dstUtcOffset - baseUtcOffset;
1022
1023                                 var rule1 = TimeZoneInfo.AdjustmentRule.CreateAdjustmentRule (
1024                                         new DateTime (2014, 1, 1), new DateTime (2014, 6, 30), dstOffset,
1025                                         CreateFixedDateRule (dst1Start), CreateFixedDateRule (dst1End));
1026
1027                                 var rule2 = TimeZoneInfo.AdjustmentRule.CreateAdjustmentRule (
1028                                         new DateTime (2014, 7, 1), new DateTime (2014, 12, 31), dstOffset,
1029                                         CreateFixedDateRule (dst2Start), CreateFixedDateRule (dst2End));
1030
1031                                 cairo = TimeZoneInfo.CreateCustomTimeZone ("Africa/Cairo", baseUtcOffset, "Africa/Cairo", "EET", "EEST",
1032                                         new [] {rule1, rule2});
1033                         }
1034
1035                         private static TimeZoneInfo.TransitionTime CreateFixedDateRule (DateTime dateTime)
1036                         {
1037                                 var time = new DateTime (dateTime.Ticks - dateTime.Date.Ticks);
1038                                 return TimeZoneInfo.TransitionTime.CreateFixedDateRule (time, dateTime.Month, dateTime.Day);
1039                         }
1040
1041                         [Test]
1042                         public void GetUtcOffset_FromUTC ()
1043                         {
1044                                 var d = dst1Start.Add (-baseUtcOffset);
1045                                 d = DateTime.SpecifyKind (d, DateTimeKind.Utc);
1046                                 Assert.AreEqual(baseUtcOffset, cairo.GetUtcOffset (d.Add (new TimeSpan(0,0,0,-1))));
1047                                 Assert.AreEqual(dstUtcOffset, cairo.GetUtcOffset (d));
1048                                 Assert.AreEqual(dstUtcOffset, cairo.GetUtcOffset (d.Add (new TimeSpan(0,0,0, 1))));
1049
1050                                 d = dst1End.Add (-baseUtcOffset-dstOffset);
1051                                 d = DateTime.SpecifyKind (d, DateTimeKind.Utc);
1052                                 Assert.AreEqual(dstUtcOffset, cairo.GetUtcOffset (d.Add (new TimeSpan(0,0,0,-1))));
1053                                 Assert.AreEqual(baseUtcOffset, cairo.GetUtcOffset (d));
1054                                 Assert.AreEqual(baseUtcOffset, cairo.GetUtcOffset (d.Add (new TimeSpan(0,0,0, 1))));
1055
1056                                 d = dst2Start.Add (-baseUtcOffset);
1057                                 d = DateTime.SpecifyKind (d, DateTimeKind.Utc);
1058                                 Assert.AreEqual(baseUtcOffset, cairo.GetUtcOffset (d.Add (new TimeSpan(0,0,0,-1))));
1059                                 Assert.AreEqual(dstUtcOffset, cairo.GetUtcOffset (d));
1060                                 Assert.AreEqual(dstUtcOffset, cairo.GetUtcOffset (d.Add (new TimeSpan(0,0,0, 1))));
1061
1062                                 d = dst2End.Add (-baseUtcOffset-dstOffset);
1063                                 d = DateTime.SpecifyKind (d, DateTimeKind.Utc);
1064                                 Assert.AreEqual(dstUtcOffset, cairo.GetUtcOffset (d.Add (new TimeSpan(0,0,0,-1))));
1065                                 Assert.AreEqual(baseUtcOffset, cairo.GetUtcOffset (d));
1066                                 Assert.AreEqual(baseUtcOffset, cairo.GetUtcOffset (d.Add (new TimeSpan(0,0,0, 1))));
1067                         }
1068
1069                         [Test]
1070                         public void GetUtcOffset_FromLocal ()
1071                         {
1072                                 var d = dst1Start.Add (-baseUtcOffset);
1073                                 d = DateTime.SpecifyKind (d, DateTimeKind.Utc);
1074                                 d = d.ToLocalTime ();
1075                                 Assert.AreEqual(baseUtcOffset, cairo.GetUtcOffset (d.Add (new TimeSpan(0,0,0,-1))));
1076                                 Assert.AreEqual(dstUtcOffset, cairo.GetUtcOffset (d));
1077                                 Assert.AreEqual(dstUtcOffset, cairo.GetUtcOffset (d.Add (new TimeSpan(0,0,0, 1))));
1078
1079                                 d = dst1End.Add (-baseUtcOffset-dstOffset);
1080                                 d = DateTime.SpecifyKind (d, DateTimeKind.Utc);
1081                                 d = d.ToLocalTime ();
1082                                 Assert.AreEqual(dstUtcOffset, cairo.GetUtcOffset (d.Add (new TimeSpan(0,0,0,-1))));
1083                                 Assert.AreEqual(baseUtcOffset, cairo.GetUtcOffset (d));
1084                                 Assert.AreEqual(baseUtcOffset, cairo.GetUtcOffset (d.Add (new TimeSpan(0,0,0, 1))));
1085
1086                                 d = dst2Start.Add (-baseUtcOffset);
1087                                 d = DateTime.SpecifyKind (d, DateTimeKind.Utc);
1088                                 d = d.ToLocalTime ();
1089                                 Assert.AreEqual(baseUtcOffset, cairo.GetUtcOffset (d.Add (new TimeSpan(0,0,0,-1))));
1090                                 Assert.AreEqual(dstUtcOffset, cairo.GetUtcOffset (d));
1091                                 Assert.AreEqual(dstUtcOffset, cairo.GetUtcOffset (d.Add (new TimeSpan(0,0,0, 1))));
1092
1093                                 d = dst2End.Add (-baseUtcOffset-dstOffset);
1094                                 d = DateTime.SpecifyKind (d, DateTimeKind.Utc);
1095                                 d = d.ToLocalTime ();
1096                                 Assert.AreEqual(dstUtcOffset, cairo.GetUtcOffset (d.Add (new TimeSpan(0,0,0,-1))));
1097                                 Assert.AreEqual(baseUtcOffset, cairo.GetUtcOffset (d));
1098                                 Assert.AreEqual(baseUtcOffset, cairo.GetUtcOffset (d.Add (new TimeSpan(0,0,0, 1))));
1099                         }
1100
1101                         [Test]
1102                         public void GetUtcOffset_FromUnspecified ()
1103                         {
1104                                 var d = dst1Start.Add (dstOffset);
1105                                 Assert.AreEqual(baseUtcOffset, cairo.GetUtcOffset (d.Add (new TimeSpan(0,0,0,-1))));
1106                                 Assert.AreEqual(dstUtcOffset, cairo.GetUtcOffset (d));
1107                                 Assert.AreEqual(dstUtcOffset, cairo.GetUtcOffset (d.Add (new TimeSpan(0,0,0, 1))));
1108
1109                                 d = dst1End.Add (-dstOffset);
1110                                 Assert.AreEqual(dstUtcOffset, cairo.GetUtcOffset (d.Add (new TimeSpan(0,0,0,-1))));
1111                                 Assert.AreEqual(baseUtcOffset, cairo.GetUtcOffset (d));
1112                                 Assert.AreEqual(baseUtcOffset, cairo.GetUtcOffset (d.Add (new TimeSpan(0,0,0, 1))));
1113
1114                                 d = dst2Start.Add (dstOffset);
1115                                 Assert.AreEqual(baseUtcOffset, cairo.GetUtcOffset (d.Add (new TimeSpan(0,0,0,-1))));
1116                                 Assert.AreEqual(dstUtcOffset, cairo.GetUtcOffset (d));
1117                                 Assert.AreEqual(dstUtcOffset, cairo.GetUtcOffset (d.Add (new TimeSpan(0,0,0, 1))));
1118
1119                                 d = dst2End.Add (-dstOffset);
1120                                 Assert.AreEqual(dstUtcOffset, cairo.GetUtcOffset (d.Add (new TimeSpan(0,0,0,-1))));
1121                                 Assert.AreEqual(baseUtcOffset, cairo.GetUtcOffset (d));
1122                                 Assert.AreEqual(baseUtcOffset, cairo.GetUtcOffset (d.Add (new TimeSpan(0,0,0, 1))));
1123                         }
1124
1125                   [Test]
1126                   public void  GetUtcOffset_FromDateTimeOffset ()
1127                   {
1128                           DateTimeOffset offset;
1129
1130                           offset = new DateTimeOffset(dst1Start, baseUtcOffset);
1131                           Assert.AreEqual(baseUtcOffset, cairo.GetUtcOffset(offset.Add(new TimeSpan(0, 0, 0, -1))), "dst1Start_with_baseUtcOffset#before");
1132                           Assert.AreEqual(dstUtcOffset, cairo.GetUtcOffset(offset), "dst1Start_with_baseUtcOffset#exact");
1133                           Assert.AreEqual(dstUtcOffset, cairo.GetUtcOffset(offset.Add(new TimeSpan(0, 0, 0, 1))), "dst1Start_with_baseUtcOffset#after");
1134
1135                           offset = new DateTimeOffset(dst1End, dstOffset + baseUtcOffset);
1136                           Assert.AreEqual(dstUtcOffset, cairo.GetUtcOffset(offset.Add(new TimeSpan(0, 0, 0, -1))), "dst1End_with_dstOffset+baseUtcOffset#before");
1137                           Assert.AreEqual(baseUtcOffset, cairo.GetUtcOffset(offset), "dst1End_with_dstOffset+baseUtcOffset#exact");
1138                           Assert.AreEqual(baseUtcOffset, cairo.GetUtcOffset(offset.Add(new TimeSpan(0, 0, 0, 1))), "dst1End_with_dstOffset+baseUtcOffset#after");
1139
1140                           offset = new DateTimeOffset(dst2Start, baseUtcOffset);
1141                           Assert.AreEqual(baseUtcOffset, cairo.GetUtcOffset(offset.Add(new TimeSpan(0, 0, 0, -1))), "dst2Start_with_baseUtcOffset#before");
1142                           Assert.AreEqual(dstUtcOffset, cairo.GetUtcOffset(offset), "dst2Start_with_baseUtcOffset#exact");
1143                           Assert.AreEqual(dstUtcOffset, cairo.GetUtcOffset(offset.Add(new TimeSpan(0, 0, 0, 1))), "dst2Start_with_baseUtcOffset#after");
1144
1145                           offset = new DateTimeOffset(dst2End, baseUtcOffset + dstOffset);
1146                           Assert.AreEqual(dstUtcOffset, cairo.GetUtcOffset(offset.Add(new TimeSpan(0, 0, 0, -1))), "dst2End_with_dstOffset+baseUtcOffset#before");
1147                           Assert.AreEqual(baseUtcOffset, cairo.GetUtcOffset(offset), "dst2End_with_dstOffset+baseUtcOffset#exact");
1148                           Assert.AreEqual(baseUtcOffset, cairo.GetUtcOffset(offset.Add(new TimeSpan(0, 0, 0, 1))), "dst2End_with_dstOffset+baseUtcOffset#after");
1149                   }
1150     }
1151
1152                 [TestFixture]
1153                 public class GetDaylightChanges
1154                 {
1155                         MethodInfo getChanges;
1156
1157                         [SetUp]
1158                         public void Setup ()
1159                         {
1160                                 var flags = BindingFlags.Instance | BindingFlags.NonPublic;
1161                                 getChanges = typeof (TimeZoneInfo).GetMethod ("GetDaylightChanges", flags);
1162                         }
1163
1164                         [Test]
1165                         public void TestSydneyDaylightChanges ()
1166                         {
1167                                 TimeZoneInfo tz;
1168                                 if (Environment.OSVersion.Platform == PlatformID.Unix)
1169                                         tz = TimeZoneInfo.FindSystemTimeZoneById ("Australia/Sydney");
1170                                 else
1171                                         tz = TimeZoneInfo.FindSystemTimeZoneById ("W. Australia Standard Time");
1172
1173                                 var changes = (DaylightTime) getChanges.Invoke (tz, new object [] {2014});
1174
1175                                 Assert.AreEqual (new TimeSpan (1, 0, 0), changes.Delta);
1176                                 Assert.AreEqual (new DateTime (2014, 10, 5, 2, 0, 0), changes.Start);
1177                                 Assert.AreEqual (new DateTime (2014, 4, 6, 3, 0, 0), changes.End);
1178                         }
1179
1180                         [Test]
1181                         public void AllTimeZonesDaylightChanges ()
1182                         {
1183                                 foreach (var tz in TimeZoneInfo.GetSystemTimeZones ()) {
1184                                         try {
1185                                                 for (var year = 1950; year <= 2051; year++)
1186                                                         getChanges.Invoke (tz, new object [] {year} );
1187                                         } catch (Exception e) {
1188                                                 Assert.Fail ("TimeZone " + tz.Id + " exception: " + e.ToString ());
1189                                         }
1190                                 }
1191                         }
1192                 }
1193
1194                 [TestFixture]
1195                 public class ParseTZBuffer
1196                 {
1197                         MethodInfo parseTZBuffer;
1198
1199                         [SetUp]
1200                         public void Setup()
1201                         {
1202                                 var flags = BindingFlags.Static | BindingFlags.NonPublic;
1203                                 parseTZBuffer = typeof (TimeZoneInfo).GetMethod ("ParseTZBuffer", flags);
1204                         }
1205
1206                         [Test]
1207                         public void Bug31432 ()
1208                         {
1209                                 // Europe/Moscow from failing device
1210                                 var base64Data = "VFppZjIAAAAAAAAAAAAAAAAAAAAAAAAPAAAADwAAAAAAAABNAAAADwAAACKbXx7HnT7yeZ4q7vme9zlpn4RX+aDYbOmhABYJoTymQKQQbcCkPTKwpRVosKU9A8CnHkVQtaQZYBUnp9AWGNxAFwjbUBf6D8AY6g7QGdtDQBrMk9AbvKDwHKyR8B2cgvAejHPwH3xk8CBsVfAhXEbwIkw38CM8KPAkLBnwJRwK8CYL+/AnBSdwJ/UYcCjlF4ApeL+AKdTQQCrEszArtNxwLKTNcC2UvnAuhK9wL3SgcDBkkXAxXbzwMnKX8DM9nvA0UnnwNR2A8DYyW/A2/WLwOBt4cDjdRPA5+1pwOr0m8DvbPHA8pkNwPbsecD6GJXA/mwBwQGYHcEGEHPBCRelwQ2P+8EQly3BFQ+DwRgWtcEcjwvBH7snwSQOk8EnOq/BK44bwS66N8EzMo3BNjm/wVEwdYAIBAgMBAwUEBQYFBwgHCQcJBwkHCQoLCgsKCwoLCgsKCwoMDQoJBwsKCwoLCgsKCwoLCgsKCwoLCgsKCwoLCgsKCwoLCgsKCwoLCg4KAAAjOQAAAAAxhwEEAAAjdwAAAAA/lwEIAAAqMAADAAA4QAENAABGUAEPAAAqMAARAAAcIAAVAAA4QAEZAAAqMAARAAA4QAEZAAAqMAEdAAAcIAAVAAA4QAARTU1UAE1TVABNRFNUAFMATQBNU0sARUVUAE1TRABFRVNUAAAAAAAAAAAAAAABAQEBAQAAAAAAAAAAAAAAAAAAAFRaaWYyAAAAAAAAAAAAAAAAAAAAAAAAEAAAABAAAAAAAAAATgAAABAAAAAm/////1a2wMf/////m18ex/////+dPvJ5/////54q7vn/////nvc5af////+fhFf5/////6DYbOn/////oQAWCf////+hPKZA/////6QQbcD/////pD0ysP////+lFWiw/////6U9A8D/////px5FUP////+1pBlgAAAAABUnp9AAAAAAFhjcQAAAAAAXCNtQAAAAABf6D8AAAAAAGOoO0AAAAAAZ20NAAAAAABrMk9AAAAAAG7yg8AAAAAAcrJHwAAAAAB2cgvAAAAAAHoxz8AAAAAAffGTwAAAAACBsVfAAAAAAIVxG8AAAAAAiTDfwAAAAACM8KPAAAAAAJCwZ8AAAAAAlHArwAAAAACYL+/AAAAAAJwUncAAAAAAn9RhwAAAAACjlF4AAAAAAKXi/gAAAAAAp1NBAAAAAACrEszAAAAAAK7TccAAAAAAspM1wAAAAAC2UvnAAAAAALoSvcAAAAAAvdKBwAAAAADBkkXAAAAAAMV288AAAAAAycpfwAAAAADM9nvAAAAAANFJ58AAAAAA1HYDwAAAAADYyW/AAAAAANv1i8AAAAAA4G3hwAAAAADjdRPAAAAAAOftacAAAAAA6vSbwAAAAADvbPHAAAAAAPKZDcAAAAAA9ux5wAAAAAD6GJXAAAAAAP5sAcAAAAABAZgdwAAAAAEGEHPAAAAAAQkXpcAAAAABDY/7wAAAAAEQly3AAAAAARUPg8AAAAABGBa1wAAAAAEcjwvAAAAAAR+7J8AAAAABJA6TwAAAAAEnOq/AAAAAASuOG8AAAAABLro3wAAAAAEzMo3AAAAAATY5v8AAAAABUTB1gAQMCAwQCBAYFBgcGCAkICggKCAoICgsMCwwLDAsMCwwLDAsNDgsKCAwLDAsMCwwLDAsMCwwLDAsMCwwLDAsMCwwLDAsMCwwLDAsMCw8LAAAjOQAAAAAjOQAEAAAxhwEIAAAjdwAEAAA/lwEMAAAqMAADAAA4QAERAABGUAETAAAqMAAVAAAcIAAZAAA4QAEdAAAqMAAVAAA4QAEdAAAqMAEhAAAcIAAZAAA4QAAVTE1UAE1NVABNU1QATURTVABTAE0ATVNLAEVFVABNU0QARUVTVAAAAAAAAAAAAAAAAAEBAQEBAAAAAAAAAAAAAAAAAAAAAApNU0stMwo=";
1211
1212                                 var data = Convert.FromBase64String (base64Data);
1213
1214                                 var tz = parseTZBuffer.Invoke (null, new object[] { "Test", data, data.Length});
1215                                 Assert.IsTrue (tz != null);
1216                         }
1217                 }
1218         }
1219 }