mcs/class/corlib/Test/System.Threading/ThreadTest.cs

   1 // ThreadTest.cs - NUnit Test Cases for the System.Threading.Thread class
   2 //
   3 // Authors
   4 //      Eduardo Garcia Cebollero (kiwnix@yahoo.es)
   5 //      Sebastien Pouliot  <sebastien@ximian.com>
   6 //
   7 // (C) Eduardo Garcia Cebollero.
   8 // (C) Ximian, Inc.  http://www.ximian.com
   9 // (C) 2004 Novell (http://www.novell.com)
  10 //
  11
  12 using System;
  13 using System.Globalization;
  14 using System.Security.Principal;
  15 using System.Threading;
  16
  17 using NUnit.Framework;
  18
  19 namespace MonoTests.System.Threading
  20 {
  21         // These tests seem to hang the 2.0 framework. So they are disabled for now
  22         // Don't reenable them until you can run a few thousand times on an SMP box.
  23         [Category ("NotWorking")]
  24         public class ThreadedPrincipalTest
  25         {
  26                 public static void NoPrincipal ()
  27                 {
  28                         AppDomain.CurrentDomain.SetPrincipalPolicy (PrincipalPolicy.NoPrincipal);
  29                         IPrincipal p = Thread.CurrentPrincipal;
  30                         Assert.IsNull (p, "#1");
  31
  32                         Thread.CurrentPrincipal = new GenericPrincipal (new GenericIdentity ("mono"), null);
  33                         Assert.IsNotNull (Thread.CurrentPrincipal, "#2");
  34
  35                         Thread.CurrentPrincipal = null;
  36                         Assert.IsNull (Thread.CurrentPrincipal, "#3");
  37                         // in this case we can return to null
  38                 }
  39
  40                 public static void UnauthenticatedPrincipal ()
  41                 {
  42                         AppDomain.CurrentDomain.SetPrincipalPolicy (PrincipalPolicy.UnauthenticatedPrincipal);
  43                         IPrincipal p = Thread.CurrentPrincipal;
  44                         Assert.IsNotNull (p, "#1");
  45                         Assert.IsTrue ((p is GenericPrincipal), "#2");
  46                         Assert.AreEqual (String.Empty, p.Identity.Name, "#3");
  47                         Assert.AreEqual (String.Empty, p.Identity.AuthenticationType, "#4");
  48                         Assert.IsFalse (p.Identity.IsAuthenticated, "#5");
  49
  50                         Thread.CurrentPrincipal = new GenericPrincipal (new GenericIdentity ("mono"), null);
  51                         Assert.IsNotNull (Thread.CurrentPrincipal, "#6");
  52
  53                         Thread.CurrentPrincipal = null;
  54                         Assert.IsNotNull (Thread.CurrentPrincipal, "#7");
  55                         // in this case we can't return to null
  56                 }
  57
  58                 public static void WindowsPrincipal ()
  59                 {
  60                         AppDomain.CurrentDomain.SetPrincipalPolicy (PrincipalPolicy.WindowsPrincipal);
  61                         IPrincipal p = Thread.CurrentPrincipal;
  62                         Assert.IsNotNull (p, "#1");
  63                         Assert.IsTrue ((p is WindowsPrincipal), "#2");
  64                         Assert.IsNotNull (p.Identity.Name, "#3");
  65                         Assert.IsNotNull (p.Identity.AuthenticationType, "#4");
  66                         Assert.IsTrue (p.Identity.IsAuthenticated, "#5");
  67
  68                         // note: we can switch from a WindowsPrincipal to a GenericPrincipal
  69                         Thread.CurrentPrincipal = new GenericPrincipal (new GenericIdentity ("mono"), null);
  70                         Assert.IsNotNull (Thread.CurrentPrincipal, "#6");
  71
  72                         Thread.CurrentPrincipal = null;
  73                         Assert.IsNotNull (Thread.CurrentPrincipal, "#7");
  74                         // in this case we can't return to null
  75                 }
  76
  77                 public static void CopyOnNewThread ()
  78                 {
  79                         Assert.IsNotNull (Thread.CurrentPrincipal, "#1");
  80                         Assert.AreEqual ("good", Thread.CurrentPrincipal.Identity.Name, "#2");
  81                 }
  82         }
  83
  84         [TestFixture]
  85         [Category("MobileNotWorking")] // Abort #10240
  86         public class ThreadTest
  87         {
  88                 //TimeSpan Infinite = new TimeSpan (-10000);    // -10000 ticks == -1 ms
  89                 TimeSpan SmallNegative = new TimeSpan (-2);     // between 0 and -1.0 (infinite) ms
  90                 TimeSpan Negative = new TimeSpan (-20000);      // really negative
  91                 //TimeSpan MaxValue = TimeSpan.FromMilliseconds ((long) Int32.MaxValue);
  92                 TimeSpan TooLarge = TimeSpan.FromMilliseconds ((long) Int32.MaxValue + 1);
  93
  94                 static bool is_win32;
  95                 static bool is_mono;
  96
  97                 static ThreadTest ()
  98                 {
  99                         switch (Environment.OSVersion.Platform) {
 100                         case PlatformID.Win32NT:
 101                         case PlatformID.Win32S:
 102                         case PlatformID.Win32Windows:
 103                         case PlatformID.WinCE:
 104                                 is_win32 = true;
 105                                 break;
 106                         }
 107
 108                         // check a class in mscorlib to determine if we're running on Mono
 109                         if (Type.GetType ("System.MonoType", false) != null)
 110                                 is_mono = true;
 111                 }
 112
 113                 //Some Classes to test as threads
 114                 private class C1Test
 115                 {
 116                         public int cnt;
 117                         public Thread thread1;
 118                         public bool endm1;
 119                         public bool endm2;
 120
 121                         public C1Test()
 122                         {
 123                                 thread1 = (Thread)null;
 124                                 this.cnt = 0;
 125                                 endm1 = endm2 = false;
 126                         }
 127
 128                         public void TestMethod()
 129                         {
 130                                 while (cnt < 10)
 131                                 {
 132                                         cnt++;
 133                                 }
 134                                 endm1 = true;
 135                         }
 136                         public void TestMethod2()
 137                         {
 138                                 if (!(thread1==(Thread)null) )
 139                                 {
 140                                         thread1.Join();
 141                                 }
 142                                 endm2 = true;
 143                         }
 144                 }
 145
 146                 private class C2Test
 147                 {
 148                         public int cnt;
 149                         public bool run = false;
 150
 151                         public C2Test()
 152                         {
 153                                 this.cnt = 0;
 154                         }
 155
 156                         public void TestMethod()
 157                         {
 158                                 run = true;
 159                                 while (true)
 160                                 {
 161                                         if (cnt < 1000)
 162                                                 cnt++;
 163                                         else
 164                                                 cnt = 0;
 165                                 }
 166                         }
 167                 }
 168
 169                 private class C3Test
 170                 {
 171                         public C1Test sub_class;
 172                         public Thread sub_thread;
 173
 174                         public C3Test()
 175                         {
 176                                 sub_class = new C1Test();
 177                                 sub_thread = new Thread(new ThreadStart(sub_class.TestMethod));
 178                         }
 179
 180                         public void TestMethod1()
 181                         {
 182                                 sub_thread.Start();
 183                                 Thread.Sleep (100);
 184                                 sub_thread.Abort();
 185                         }
 186                 }
 187
 188                 private class C4Test
 189                 {
 190                         public C1Test class1;
 191                         public C1Test class2;
 192                         public Thread thread1;
 193                         public Thread thread2;
 194                         public bool T1ON ;
 195                         public bool T2ON ;
 196
 197                         public C4Test()
 198                         {
 199                                 T1ON = false;
 200                                 T2ON = false;
 201                                 class1 = new C1Test();
 202                                 class2 = new C1Test();
 203                                 thread1 = new Thread(new ThreadStart(class1.TestMethod));
 204                                 thread2 = new Thread(new ThreadStart(class2.TestMethod));
 205                         }
 206
 207                         public void TestMethod1()
 208                         {
 209                                 thread1.Start();
 210                                 TestUtil.WaitForAlive (thread1, "wait1");
 211                                 T1ON = true;
 212                                 thread2.Start();
 213                                 TestUtil.WaitForAlive (thread2, "wait2");
 214                                 T2ON = true;
 215                                 thread1.Abort();
 216                                 TestUtil.WaitForNotAlive (thread1, "wait3");
 217                                 T1ON = false;
 218                                 thread2.Abort();
 219                                 TestUtil.WaitForNotAlive (thread2, "wait4");
 220                                 T2ON = false;
 221                         }
 222
 223                         public void TestMethod2()
 224                         {
 225                                 thread1.Start();
 226                                 thread1.Join();
 227                         }
 228                 }
 229
 230                 [Test]
 231                 public void TestCtor1()
 232                 {
 233                         C1Test test1 = new C1Test();
 234                         Thread t = new Thread (new ThreadStart (test1.TestMethod));
 235
 236                         Assert.IsTrue (t.CurrentCulture.IsReadOnly, "CurrentCulture.IsReadOnly");
 237                         Assert.IsFalse (t.IsAlive, "IsAlive");
 238                         Assert.IsFalse (t.IsBackground, "IsBackground");
 239                         Assert.IsNull (t.Name, "Name");
 240                         Assert.AreEqual (ThreadState.Unstarted, t.ThreadState, "ThreadState");
 241                 }
 242
 243                 [Test]
 244                 [Category ("NotWorking")] // we're not sharing (read-only) CultureInfo
 245                 public void CultureInfo_Shared_Across_Threads ()
 246                 {
 247                         Thread t = new Thread (TestCtor1);
 248                         Assert.AreSame (t.CurrentCulture, t.CurrentUICulture, "Culture");
 249
 250                         Assert.AreSame (t.CurrentCulture, CultureInfo.CurrentCulture, "CultureInfo.CurrentCulture");
 251                         Assert.AreSame (t.CurrentUICulture, CultureInfo.CurrentUICulture, "CultureInfo.CurrentUICulture");
 252
 253                         Assert.AreSame (t.CurrentCulture, Thread.CurrentThread.CurrentCulture, "Thread.CurrentThread.CurrentCulture");
 254                         Assert.AreSame (t.CurrentUICulture, Thread.CurrentThread.CurrentUICulture, "Thread.CurrentThread.CurrentUICulture");
 255                 }
 256
 257                 [Test] // bug #325566
 258                 public void GetHashCodeTest ()
 259                 {
 260                         C1Test test1 = new C1Test ();
 261                         Thread tA = new Thread (new ThreadStart (test1.TestMethod));
 262                         int hA1 = tA.GetHashCode ();
 263 #if NET_2_0
 264                         Assert.IsTrue (hA1 > 0, "#A1");
 265 #endif
 266                         tA.Start ();
 267                         int hA2 = tA.GetHashCode ();
 268                         Assert.AreEqual (hA1, hA2, "#A2");
 269                         tA.Join ();
 270                         int hA3 = tA.GetHashCode ();
 271                         Assert.AreEqual (hA1, hA3, "#A3");
 272 #if NET_2_0
 273                         Assert.AreEqual (hA1, tA.ManagedThreadId, "#A4");
 274 #endif
 275
 276                         test1 = new C1Test ();
 277                         Thread tB = new Thread (new ThreadStart (test1.TestMethod));
 278                         int hB1 = tB.GetHashCode ();
 279 #if NET_2_0
 280                         Assert.IsTrue (hB1 > 0, "#B1");
 281 #endif
 282                         tB.Start ();
 283                         int hB2 = tB.GetHashCode ();
 284                         Assert.AreEqual (hB1, hB2, "#B2");
 285                         tB.Join ();
 286                         int hB3 = tB.GetHashCode ();
 287                         Assert.AreEqual (hB1, hB3, "#B3");
 288 #if NET_2_0
 289                         Assert.AreEqual (hB1, tB.ManagedThreadId, "#B4");
 290 #endif
 291                         Assert.IsFalse (hA2 == hB2, "#B5");
 292                 }
 293
 294 #if NET_2_0
 295                 [Test] // bug #82700
 296                 public void ManagedThreadId ()
 297                 {
 298                         C1Test test1 = new C1Test ();
 299                         Thread t1 = new Thread (new ThreadStart (test1.TestMethod));
 300                         int mtA1 = t1.ManagedThreadId;
 301                         t1.Start ();
 302                         int mtA2 = t1.ManagedThreadId;
 303                         t1.Join ();
 304                         int mtA3 = t1.ManagedThreadId;
 305                         Assert.AreEqual (mtA1, mtA2, "#A1");
 306                         Assert.AreEqual (mtA2, mtA3, "#A2");
 307
 308                         test1 = new C1Test ();
 309                         Thread t2 = new Thread (new ThreadStart (test1.TestMethod));
 310                         int mtB1 = t2.ManagedThreadId;
 311                         t2.Start ();
 312                         int mtB2 = t2.ManagedThreadId;
 313                         t2.Join ();
 314                         int mtB3 = t2.ManagedThreadId;
 315                         Assert.AreEqual (mtB1, mtB2, "#B1");
 316                         Assert.AreEqual (mtB2, mtB3, "#B2");
 317                         Assert.IsFalse (mtB1 == mtA1, "#B3");
 318                 }
 319 #endif
 320
 321                 [Test]
 322                 [Category ("NotDotNet")] // it hangs.
 323                 public void TestStart()
 324                 {
 325                         if (is_win32 && is_mono)
 326                                 Assert.Fail ("This test fails on Win32. The test should be fixed.");
 327                 {
 328                         C1Test test1 = new C1Test();
 329                         Thread TestThread = new Thread(new ThreadStart(test1.TestMethod));
 330                         TestThread.Start();
 331                         TestThread.Join();
 332                         Assert.AreEqual (10, test1.cnt, "#1");
 333                 }
 334                 {
 335                         C2Test test1 = new C2Test();
 336                         Thread TestThread = new Thread(new ThreadStart(test1.TestMethod));
 337                         TestThread.Start();
 338                         TestThread.Abort();
 339                         try {
 340                                 TestThread.Start();
 341                                 Assert.Fail ("#2");
 342                         } catch (ThreadStateException) {
 343                         }
 344                 }
 345                 {
 346                         C2Test test1 = new C2Test();
 347                         Thread TestThread = new Thread(new ThreadStart(test1.TestMethod));
 348                         TestThread.Start();
 349                         while (!test1.run) {
 350                         }
 351                         bool started = (TestThread.ThreadState == ThreadState.Running);
 352                         Assert.AreEqual (started, test1.run, "#15 Thread Is not in the correct state: ");
 353                         TestThread.Abort();
 354                 }
 355                 }
 356
 357                 [Test]
 358                 public void TestApartmentState ()
 359                 {
 360                         if (is_win32 && is_mono)
 361                                 Assert.Fail ("This test fails on mono on win32. Our runtime should be fixed.");
 362
 363                         C2Test test1 = new C2Test();
 364                         Thread TestThread = new Thread(new ThreadStart(test1.TestMethod));
 365                         Assert.AreEqual (ApartmentState.Unknown, TestThread.ApartmentState, "#1");
 366                         TestThread.Start();
 367                         TestUtil.WaitForAlive (TestThread, "wait5");
 368 #if NET_2_0
 369                         Assert.AreEqual (ApartmentState.MTA, TestThread.ApartmentState, "#2");
 370 #else
 371                         Assert.AreEqual (ApartmentState.Unknown, TestThread.ApartmentState, "#3");
 372 #endif
 373                         TestThread.Abort();
 374                 }
 375
 376                 [Test]
 377                 public void TestPriority1()
 378                 {
 379                         if (is_win32 && is_mono)
 380                                 Assert.Fail ("This test fails on mono on Win32. Our runtime should be fixed.");
 381
 382                         C2Test test1 = new C2Test();
 383                         Thread TestThread = new Thread(new ThreadStart(test1.TestMethod));
 384                         try {
 385                                 TestThread.Priority=ThreadPriority.BelowNormal;
 386                                 ThreadPriority after = TestThread.Priority;
 387                                 TestThread.Start();
 388                                 TestUtil.WaitForAlive (TestThread, "wait7");
 389                                 ThreadPriority before = TestThread.Priority;
 390                                 Assert.AreEqual (before, after, "#41 Unexpected Priority Change: ");
 391                         } finally {
 392                                 TestThread.Abort();
 393                         }
 394                 }
 395
 396                 [Test]
 397                 [Category ("NotDotNet")] // on MS, Thread is still in AbortRequested state when Start is invoked
 398                 public void AbortUnstarted ()
 399                 {
 400                         C2Test test1 = new C2Test();
 401                         Thread th = new Thread (new ThreadStart (test1.TestMethod));
 402                         th.Abort ();
 403                         th.Start ();
 404                 }
 405
 406                 [Test]
 407                 [Category ("NotDotNet")] // on MS, ThreadState is immediately Stopped after Abort
 408                 [Category ("NotWorking")] // this is a MonoTODO -> no support for Priority
 409                 public void TestPriority2()
 410                 {
 411                         C2Test test1 = new C2Test();
 412                         Thread TestThread = new Thread(new ThreadStart(test1.TestMethod));
 413                         try {
 414                                 Assert.AreEqual (ThreadPriority.Normal, TestThread.Priority, "#42 Incorrect Priority in New thread: ");
 415                                 TestThread.Start();
 416                                 TestUtil.WaitForAliveOrStop (TestThread, "wait8");
 417                                 Assert.AreEqual (ThreadPriority.Normal, TestThread.Priority, "#43 Incorrect Priority in Started thread: ");
 418                         } finally {
 419                                 TestThread.Abort();
 420                         }
 421                         Assert.AreEqual (ThreadPriority.Normal, TestThread.Priority, "#44 Incorrect Priority in Aborted thread: ");
 422                 }
 423
 424                 [Test]
 425                 [Category ("NotWorking")] // this is a MonoTODO -> no support for Priority
 426                 public void TestPriority3()
 427                 {
 428                         C2Test test1 = new C2Test();
 429                         Thread TestThread = new Thread(new ThreadStart(test1.TestMethod));
 430                         try {
 431                                 TestThread.Start();
 432                                 TestThread.Priority = ThreadPriority.Lowest;
 433                                 Assert.AreEqual (ThreadPriority.Lowest, TestThread.Priority, "#45A Incorrect Priority:");
 434                                 TestThread.Priority = ThreadPriority.BelowNormal;
 435                                 Assert.AreEqual (ThreadPriority.BelowNormal, TestThread.Priority, "#45B Incorrect Priority:");
 436                                 TestThread.Priority = ThreadPriority.Normal;
 437                                 Assert.AreEqual (ThreadPriority.Normal, TestThread.Priority, "#45C Incorrect Priority:");
 438                                 TestThread.Priority = ThreadPriority.AboveNormal;
 439                                 Assert.AreEqual (ThreadPriority.AboveNormal, TestThread.Priority, "#45D Incorrect Priority:");
 440                                 TestThread.Priority = ThreadPriority.Highest;
 441                                 Assert.AreEqual (ThreadPriority.Highest, TestThread.Priority, "#45E Incorrect Priority:");
 442                         }
 443                         finally {
 444                                 TestThread.Abort();
 445                         }
 446                 }
 447
 448                 [Test]
 449                 public void TestUndivisibleByPageSizeMaxStackSize ()
 450                 {
 451                         const int undivisible_stacksize = 1048573;
 452
 453                         var thread = new Thread (new ThreadStart (delegate {}), undivisible_stacksize);
 454                         thread.Start ();
 455                         thread.Join ();
 456                 }
 457
 458                 [Test]
 459                 public void TestIsBackground1 ()
 460                 {
 461                         if (is_win32 && is_mono)
 462                                 Assert.Fail ("This test fails on mono on Win32. Our runtime should be fixed.");
 463
 464                         C2Test test1 = new C2Test();
 465                         Thread TestThread = new Thread(new ThreadStart(test1.TestMethod));
 466                         try {
 467                                 TestThread.Start();
 468                                 TestUtil.WaitForAlive (TestThread, "wait9");
 469                                 bool state = TestThread.IsBackground;
 470                                 Assert.IsFalse (state, "#51 IsBackground not set at the default state: ");
 471                         } finally {
 472                                 TestThread.Abort();
 473                         }
 474                 }
 475
 476                 [Test]
 477                 public void TestIsBackground2 ()
 478                 {
 479                         C2Test test1 = new C2Test();
 480                         Thread TestThread = new Thread(new ThreadStart(test1.TestMethod));
 481                         TestThread.IsBackground = true;
 482                         try {
 483                                 TestThread.Start();
 484                         } finally {
 485                                 TestThread.Abort();
 486                         }
 487
 488                         if (TestThread.IsAlive) {
 489                                 try {
 490                                         Assert.IsTrue (TestThread.IsBackground, "#52 Is Background Changed to Start ");
 491                                 } catch (ThreadStateException) {
 492                                         // Ignore if thread died meantime
 493                                 }
 494                         }
 495                 }
 496
 497                 [Test]
 498                 public void TestName()
 499                 {
 500                         if (is_win32 && is_mono)
 501                                 Assert.Fail ("This test fails on mono on Win32. Our runtime should be fixed.");
 502
 503                         C2Test test1 = new C2Test();
 504                         Thread TestThread = new Thread(new ThreadStart(test1.TestMethod));
 505                         try {
 506                                 TestThread.Start();
 507                                 TestUtil.WaitForAlive (TestThread, "wait10");
 508                                 string name = TestThread.Name;
 509                                 Assert.IsNull (name, "#61 Name set when mustn't be set: ");
 510                                 string newname = "Testing....";
 511                                 TestThread.Name = newname;
 512                                 Assert.AreEqual (newname, TestThread.Name, "#62 Name not set when must be set: ");
 513                         } finally {
 514                                 TestThread.Abort();
 515                         }
 516                 }
 517
 518                 [Test]
 519                 public void Name ()
 520                 {
 521                         Thread t = new Thread (new ThreadStart (Name));
 522                         Assert.IsNull (t.Name, "Name-1");
 523                         t.Name = null;
 524                         Assert.IsNull (t.Name, "Name-2");
 525                 }
 526
 527                 [Test]
 528                 [ExpectedException (typeof (InvalidOperationException))]
 529                 public void Rename ()
 530                 {
 531                         Thread t = new Thread (new ThreadStart (Rename));
 532                         t.Name = "a";
 533                         t.Name = "b";
 534                 }
 535
 536                 bool rename_finished;
 537                 bool rename_failed;
 538
 539                 [Test]
 540                 public void RenameTpThread ()
 541                 {
 542                         object monitor = new object ();
 543                         ThreadPool.QueueUserWorkItem (new WaitCallback (Rename_callback), monitor);
 544                         lock (monitor) {
 545                                 if (!rename_finished)
 546                                         Monitor.Wait (monitor);
 547                         }
 548                         Assert.IsTrue (rename_failed);
 549                 }
 550
 551                 void Rename_callback (object o) {
 552                         Thread.CurrentThread.Name = "a";
 553                         try {
 554                                 Thread.CurrentThread.Name = "b";
 555                                 Console.WriteLine ("Thread name is: {0}", Thread.CurrentThread.Name);
 556                         } catch (Exception e) {
 557                                 Console.Error.WriteLine (e);
 558                                 rename_failed = true;
 559                         }
 560                         object monitor = o;
 561                         lock (monitor) {
 562                                 rename_finished = true;
 563                                 Monitor.Pulse (monitor);
 564                         }
 565                 }
 566
 567                 [Test]
 568                 public void TestNestedThreads1()
 569                 {
 570                         C3Test test1 = new C3Test();
 571                         Thread TestThread = new Thread(new ThreadStart(test1.TestMethod1));
 572                         try {
 573                                 TestThread.Start();
 574                                 TestUtil.WaitForAlive (TestThread, "wait11");
 575                         } finally {
 576                                 TestThread.Abort();
 577                         }
 578                 }
 579
 580                 [Test]
 581                 public void TestNestedThreads2()
 582                 {
 583                         C4Test test1 = new C4Test();
 584                         Thread TestThread = new Thread(new ThreadStart(test1.TestMethod1));
 585                         try {
 586                                 TestThread.Start();
 587                         } finally {
 588                                 TestThread.Abort();
 589                         }
 590                 }
 591
 592                 [Test]
 593                 public void TestJoin1()
 594                 {
 595                         C1Test test1 = new C1Test();
 596                         C1Test test2 = new C1Test();
 597                         Thread thread1 = new Thread(new ThreadStart(test1.TestMethod));
 598                         Thread thread2 = new Thread(new ThreadStart(test1.TestMethod2));
 599                         try {
 600                                 thread1.Start();
 601                                 thread2.Start();
 602                                 thread2.Join();
 603                         } finally {
 604                                 thread1.Abort();
 605                                 thread2.Abort();
 606                         }
 607                 }
 608
 609                 [Test]
 610                 [ExpectedException (typeof (ArgumentOutOfRangeException))]
 611                 public void Join_Int32_Negative ()
 612                 {
 613                         // -1 is Timeout.Infinite
 614                         Thread.CurrentThread.Join (-2);
 615                 }
 616
 617                 [Test]
 618                 [ExpectedException (typeof (ArgumentOutOfRangeException))]
 619                 public void Join_TimeSpan_Negative ()
 620                 {
 621                         Thread.CurrentThread.Join (Negative);
 622                 }
 623
 624                 [Test]
 625                 [ExpectedException (typeof (ArgumentOutOfRangeException))]
 626                 public void Join_TimeSpan_TooLarge ()
 627                 {
 628                         Thread.CurrentThread.Join (TooLarge);
 629                 }
 630
 631                 [Test]
 632                 public void Join_TimeSpan_SmallNegative ()
 633                 {
 634                         Thread.CurrentThread.Join (SmallNegative);
 635                 }
 636
 637                 [Test]
 638                 [ExpectedException (typeof (ArgumentOutOfRangeException))]
 639                 public void Sleep_Int32_Negative ()
 640                 {
 641                         // -1 is Timeout.Infinite
 642                         Thread.Sleep (-2);
 643                 }
 644
 645                 [Test]
 646                 public void Sleep_TimeSpan_SmallNegative ()
 647                 {
 648                         Thread.Sleep (SmallNegative);
 649                 }
 650
 651                 [Test]
 652                 [ExpectedException (typeof (ArgumentOutOfRangeException))]
 653                 public void Sleep_TimeSpan_Negative ()
 654                 {
 655                         Thread.Sleep (Negative);
 656                 }
 657
 658                 [Test]
 659                 [ExpectedException (typeof (ArgumentOutOfRangeException))]
 660                 public void Sleep_TimeSpan_TooLarge ()
 661                 {
 662                         Thread.Sleep (TooLarge);
 663                 }
 664
 665                 [Test]
 666                 public void SpinWait ()
 667                 {
 668                         // no exception for negative numbers
 669                         Thread.SpinWait (Int32.MinValue);
 670                         Thread.SpinWait (0);
 671                 }
 672
 673                 [Test]
 674                 public void TestThreadState ()
 675                 {
 676                         if (is_win32 && is_mono)
 677                                 Assert.Fail ("This test fails on mono on Win32. Our runtime should be fixed.");
 678
 679                         //TODO: Test The rest of the possible transitions
 680                         C2Test test1 = new C2Test();
 681                         Thread TestThread = new Thread(new ThreadStart(test1.TestMethod));
 682                         Assert.AreEqual (ThreadState.Unstarted, TestThread.ThreadState, "#101 Wrong Thread State");
 683                         try {
 684                                 TestThread.Start();
 685                                 //while(!TestThread.IsAlive); //In the MS Documentation this is not necessary
 686                                                                                           //but in the MS SDK it is
 687                                 Assert.IsTrue (TestThread.ThreadState == ThreadState.Running || (TestThread.ThreadState & ThreadState.Unstarted) != 0,
 688                                         "#102 Wrong Thread State: " + TestThread.ThreadState.ToString ());
 689                         } finally {
 690                                 TestThread.Abort();
 691                         }
 692
 693                         TestUtil.WaitForNotAlive (TestThread, "wait12");
 694                         // Docs say state will be Stopped, but Aborted happens sometimes (?)
 695                         Assert.IsTrue ((ThreadState.Stopped & TestThread.ThreadState) != 0 || (ThreadState.Aborted & TestThread.ThreadState) != 0,
 696                                 "#103 Wrong Thread State: " + TestThread.ThreadState.ToString ());
 697                 }
 698
 699                 [Test]
 700                 [Ignore ("see comment below.")]
 701                 public void CurrentPrincipal_PrincipalPolicy_NoPrincipal ()
 702                 {
 703                         // note: switching from PrincipalPolicy won't work inside the same thread
 704                         // because as soon as a Principal object is created the Policy doesn't matter anymore
 705                         Thread t = new Thread (new ThreadStart (ThreadedPrincipalTest.NoPrincipal));
 706                         try {
 707                                 t.Start ();
 708                                 t.Join ();
 709                         } catch {
 710                                 t.Abort ();
 711                         }
 712                 }
 713
 714                 [Test]
 715                 [Ignore ("see comment below.")]
 716                 public void CurrentPrincipal_PrincipalPolicy_UnauthenticatedPrincipal ()
 717                 {
 718                         // note: switching from PrincipalPolicy won't work inside the same thread
 719                         // because as soon as a Principal object is created the Policy doesn't matter anymore
 720                         Thread t = new Thread (new ThreadStart (ThreadedPrincipalTest.UnauthenticatedPrincipal));
 721                         try {
 722                                 t.Start ();
 723                                 t.Join ();
 724                         } catch {
 725                                 t.Abort ();
 726                         }
 727                 }
 728
 729                 [Test]
 730                 public void CurrentPrincipal_PrincipalPolicy_WindowsPrincipal ()
 731                 {
 732                         // note: switching from PrincipalPolicy won't work inside the same thread
 733                         // because as soon as a Principal object is created the Policy doesn't matter anymore
 734                         Thread t = new Thread (new ThreadStart (ThreadedPrincipalTest.WindowsPrincipal));
 735                         try {
 736                                 t.Start ();
 737                                 t.Join ();
 738                         } catch {
 739                                 t.Abort ();
 740                         }
 741                 }
 742
 743                 [Test]
 744                 public void IPrincipal_CopyOnNewThread ()
 745                 {
 746                         Thread.CurrentPrincipal = new GenericPrincipal (new GenericIdentity ("bad"), null);
 747                         Thread t = new Thread (new ThreadStart (ThreadedPrincipalTest.CopyOnNewThread));
 748                         try {
 749                                 Thread.CurrentPrincipal = new GenericPrincipal (new GenericIdentity ("good"), null);
 750                                 t.Start ();
 751                                 t.Join ();
 752                         } catch {
 753                                 t.Abort ();
 754                         }
 755                 }
 756
 757                 int counter = 0;
 758
 759                 [Test]
 760                 public void TestSuspend ()
 761                 {
 762                         Thread t = new Thread (new ThreadStart (DoCount));
 763                         t.IsBackground = true;
 764                         t.Start ();
 765
 766                         CheckIsRunning ("t1", t);
 767
 768                         t.Suspend ();
 769                         WaitSuspended ("t2", t);
 770
 771                         CheckIsNotRunning ("t3", t);
 772
 773                         t.Resume ();
 774                         WaitResumed ("t4", t);
 775
 776                         CheckIsRunning ("t5", t);
 777
 778                         t.Abort ();
 779                         TestUtil.WaitForNotAlive (t, "wait13");
 780                         CheckIsNotRunning ("t6", t);
 781                 }
 782
 783                 [Test]
 784                 [Category("NotDotNet")] // On MS, ThreadStateException is thrown on Abort: "Thread is suspended; attempting to abort"
 785                 public void TestSuspendAbort ()
 786                 {
 787                         if (is_win32 && is_mono)
 788                                 Assert.Fail ("This test fails on Win32. The test should be fixed.");
 789
 790                         Thread t = new Thread (new ThreadStart (DoCount));
 791                         t.IsBackground = true;
 792                         t.Start ();
 793
 794                         CheckIsRunning ("t1", t);
 795
 796                         t.Suspend ();
 797                         WaitSuspended ("t2", t);
 798
 799                         CheckIsNotRunning ("t3", t);
 800
 801                         t.Abort ();
 802
 803                         int n=0;
 804                         while (t.IsAlive && n < 200) {
 805                                 Thread.Sleep (10);
 806                                 n++;
 807                         }
 808
 809                         Assert.IsTrue (n < 200, "Timeout while waiting for abort");
 810
 811                         CheckIsNotRunning ("t6", t);
 812                 }
 813
 814                 [Test]
 815                 public void Test_Interrupt ()
 816                 {
 817                         bool interruptedExceptionThrown = false;
 818                         ThreadPool.QueueUserWorkItem (Test_Interrupt_Worker, Thread.CurrentThread);
 819
 820                         try {
 821                                 try {
 822                                         Thread.Sleep (3000);
 823                                 } finally {
 824                                         try {
 825                                                 Thread.Sleep (0);
 826                                         } catch (ThreadInterruptedException) {
 827                                                 Assert.Fail ("ThreadInterruptedException thrown twice");
 828                                         }
 829                                 }
 830                         } catch (ThreadInterruptedException) {
 831                                 interruptedExceptionThrown = true;
 832                         }
 833
 834                         Assert.IsTrue (interruptedExceptionThrown, "ThreadInterruptedException expected.");
 835                 }
 836
 837                 [Test]
 838                 [ExpectedException (typeof (ArgumentNullException))]
 839                 public void TestQueueUserWorkItemNullCallback ()
 840                 {
 841                         ThreadPool.QueueUserWorkItem (null, null);
 842                 }
 843
 844                 private void Test_Interrupt_Worker (object o)
 845                 {
 846                         Thread t = o as Thread;
 847                         Thread.Sleep (100);
 848                         t.Interrupt ();
 849                 }
 850
 851                 [Test]
 852                 [Category ("NotDotNet")] // it crashes nunit.
 853                 public void Test_InterruptCurrentThread ()
 854                 {
 855                         bool interruptedExceptionThrown = false;
 856
 857                         Thread.CurrentThread.Interrupt ();
 858                         try {
 859                                 Thread.Sleep (0);
 860                                 Assert.Fail ();
 861                         } catch (ThreadInterruptedException) {
 862                         }
 863                 }
 864
 865                 [Test]
 866                 public void GetNamedDataSlotTest ()
 867                 {
 868                         Assert.IsNotNull (Thread.GetNamedDataSlot ("te#st"), "#1");
 869                         Assert.AreSame (Thread.GetNamedDataSlot ("te#st"), Thread.GetNamedDataSlot ("te#st"), "#2");
 870                 }
 871
 872                 void CheckIsRunning (string s, Thread t)
 873                 {
 874                         int c = counter;
 875                         Thread.Sleep (100);
 876                         Assert.IsTrue (counter > c, s);
 877                 }
 878
 879                 void CheckIsNotRunning (string s, Thread t)
 880                 {
 881                         int c = counter;
 882                         Thread.Sleep (100);
 883                         Assert.AreEqual (counter, c, s);
 884                 }
 885
 886                 void WaitSuspended (string s, Thread t)
 887                 {
 888                         int n=0;
 889                         ThreadState state = t.ThreadState;
 890                         while ((state & ThreadState.Suspended) == 0) {
 891                                 Assert.IsTrue ((state & ThreadState.SuspendRequested) != 0, s + ": expected SuspendRequested state");
 892                                 Thread.Sleep (10);
 893                                 n++;
 894                                 Assert.IsTrue (n < 100, s + ": failed to suspend");
 895                                 state = t.ThreadState;
 896                         }
 897                         Assert.IsTrue ((state & ThreadState.SuspendRequested) == 0, s + ": SuspendRequested state not expected");
 898                 }
 899
 900                 void WaitResumed (string s, Thread t)
 901                 {
 902                         int n=0;
 903                         while ((t.ThreadState & ThreadState.Suspended) != 0) {
 904                                 Thread.Sleep (10);
 905                                 n++;
 906                                 Assert.IsTrue (n < 100, s + ": failed to resume");
 907                         }
 908                 }
 909
 910                 public void DoCount ()
 911                 {
 912                         while (true) {
 913                                 counter++;
 914                                 Thread.Sleep (1);
 915                         }
 916                 }
 917         }
 918
 919         [TestFixture]
 920         public class ThreadStateTest {
 921                 void Start ()
 922                 {
 923                 }
 924
 925                 [Test] // bug #81720
 926                 public void IsBackGround ()
 927                 {
 928                         Thread t1 = new Thread (new ThreadStart (Start));
 929                         Assert.AreEqual (ThreadState.Unstarted, t1.ThreadState, "#A1");
 930                         Assert.IsFalse (t1.IsBackground, "#A2");
 931                         t1.Start ();
 932                         t1.Join ();
 933                         Assert.AreEqual (ThreadState.Stopped, t1.ThreadState, "#A3");
 934
 935                         try {
 936                                 bool isBackGround = t1.IsBackground;
 937                                 Assert.Fail ("#A4: " + isBackGround.ToString ());
 938                         } catch (ThreadStateException ex) {
 939                                 Assert.AreEqual (typeof (ThreadStateException), ex.GetType (), "#A5");
 940                                 Assert.IsNull (ex.InnerException, "#A6");
 941                                 Assert.IsNotNull (ex.Message, "#A7");
 942                         }
 943
 944                         Thread t2 = new Thread (new ThreadStart (Start));
 945                         Assert.AreEqual (ThreadState.Unstarted, t2.ThreadState, "#B1");
 946                         t2.IsBackground = true;
 947                         Assert.AreEqual (ThreadState.Unstarted | ThreadState.Background, t2.ThreadState, "#B2");
 948                         Assert.IsTrue (t2.IsBackground, "#B3");
 949                         t2.Start ();
 950                         t2.Join ();
 951                         Assert.AreEqual (ThreadState.Stopped, t2.ThreadState, "#B4");
 952
 953                         try {
 954                                 bool isBackGround = t2.IsBackground;
 955                                 Assert.Fail ("#B5: " + isBackGround.ToString ());
 956                         } catch (ThreadStateException ex) {
 957                                 Assert.AreEqual (typeof (ThreadStateException), ex.GetType (), "#B6");
 958                                 Assert.IsNull (ex.InnerException, "#B7");
 959                                 Assert.IsNotNull (ex.Message, "#B8");
 960                         }
 961                 }
 962         }
 963
 964         [TestFixture]
 965         [Serializable]
 966         public class ThreadTest_ManagedThreadId
 967         {
 968                 AppDomain ad1;
 969                 AppDomain ad2;
 970                 MBRO mbro = new MBRO ();
 971
 972                 class MBRO : MarshalByRefObject {
 973                         public int id_a1;
 974                         public int id_b1;
 975                         public int id_b2;
 976                         public string ad_a1;
 977                         public string ad_b1;
 978                         public string ad_b2;
 979                         public string message;
 980                 }
 981 #if !MOBILE
 982                 [Test]
 983                 public void ManagedThreadId_AppDomains ()
 984                 {
 985                         AppDomain currentDomain = AppDomain.CurrentDomain;
 986                         ad1 = AppDomain.CreateDomain ("AppDomain 1", currentDomain.Evidence, currentDomain.SetupInformation);
 987                         ad2 = AppDomain.CreateDomain ("AppDomain 2", currentDomain.Evidence, currentDomain.SetupInformation);
 988
 989                         Thread a = new Thread (ThreadA);
 990                         Thread b = new Thread (ThreadB);
 991                         // execute on AppDomain 1 thread A
 992                         // execute on AppDomain 2 thread B
 993                         // execute on AppDomain 1 thread B - must have same ManagedThreadId as Ad 2 on thread B
 994                         a.Start ();
 995                         a.Join ();
 996                         b.Start ();
 997                         b.Join ();
 998
 999                         AppDomain.Unload (ad1);
1000                         AppDomain.Unload (ad2);
1001
1002                         if (mbro.message != null)
1003                                 Assert.Fail (mbro.message);
1004
1005                         // Console.WriteLine ("Done id_a1: {0} id_b1: {1} id_b2: {2} ad_a1: {3} ad_b1: {4} ad_b2: {5}", mbro.id_a1, mbro.id_b1, mbro.id_b2, mbro.ad_a1, mbro.ad_b1, mbro.ad_b2);
1006
1007                         Assert.AreEqual ("AppDomain 1", mbro.ad_a1, "Name #1");
1008                         Assert.AreEqual ("AppDomain 1", mbro.ad_b1, "Name #2");
1009                         Assert.AreEqual ("AppDomain 2", mbro.ad_b2, "Name #3");
1010
1011                         Assert.AreNotEqual (mbro.id_a1, mbro.id_b1, "Id #1");
1012                         Assert.AreNotEqual (mbro.id_a1, mbro.id_b2, "Id #2");
1013                         Assert.AreEqual (mbro.id_b1, mbro.id_b2, "Id #3");
1014
1015                         Assert.AreNotEqual (mbro.id_a1, Thread.CurrentThread.ManagedThreadId, "Id #4");
1016                         Assert.AreNotEqual (mbro.id_b1, Thread.CurrentThread.ManagedThreadId, "Id #5");
1017                         Assert.AreNotEqual (mbro.id_b2, Thread.CurrentThread.ManagedThreadId, "Id #6");
1018                         Assert.AreNotEqual (mbro.ad_a1, AppDomain.CurrentDomain.FriendlyName, "Name #4");
1019                         Assert.AreNotEqual (mbro.ad_b1, AppDomain.CurrentDomain.FriendlyName, "Name #5");
1020                         Assert.AreNotEqual (mbro.ad_b2, AppDomain.CurrentDomain.FriendlyName, "Name #6");
1021                 }
1022 #endif
1023                 void A1 ()
1024                 {
1025                         mbro.id_a1 = Thread.CurrentThread.ManagedThreadId;
1026                         mbro.ad_a1 = AppDomain.CurrentDomain.FriendlyName;
1027                 }
1028
1029                 void B2 ()
1030                 {
1031                         mbro.id_b2 = Thread.CurrentThread.ManagedThreadId;
1032                         mbro.ad_b2 = AppDomain.CurrentDomain.FriendlyName;
1033                 }
1034
1035                 void B1 ()
1036                 {
1037                         mbro.id_b1 = Thread.CurrentThread.ManagedThreadId;
1038                         mbro.ad_b1 = AppDomain.CurrentDomain.FriendlyName;
1039                 }
1040
1041                 void ThreadA (object obj)
1042                 {
1043                         // Console.WriteLine ("ThreadA");
1044                         try {
1045                                 ad1.DoCallBack (A1);
1046                         } catch (Exception ex) {
1047                                 mbro.message = string.Format ("ThreadA exception: {0}", ex);
1048                         }
1049                         // Console.WriteLine ("ThreadA Done");
1050                 }
1051
1052                 void ThreadB (object obj)
1053                 {
1054                         // Console.WriteLine ("ThreadB");
1055                         try {
1056                                 ad2.DoCallBack (B2);
1057                                 ad1.DoCallBack (B1);
1058                         } catch (Exception ex) {
1059                                 mbro.message = string.Format ("ThreadB exception: {0}", ex);
1060                         }
1061                         // Console.WriteLine ("ThreadB Done");
1062                 }
1063         }
1064
1065         [TestFixture]
1066         public class ThreadApartmentTest
1067         {
1068                 void Start ()
1069                 {
1070                 }
1071
1072                 [Test] // bug #81658
1073                 public void ApartmentState_StoppedThread ()
1074                 {
1075                         Thread t1 = new Thread (new ThreadStart (Start));
1076                         t1.Start ();
1077                         t1.Join ();
1078                         try {
1079                                 ApartmentState state = t1.ApartmentState;
1080                                 Assert.Fail ("#A1: " + state.ToString ());
1081                         } catch (ThreadStateException ex) {
1082                                 Assert.AreEqual (typeof (ThreadStateException), ex.GetType (), "#A2");
1083                                 Assert.IsNull (ex.InnerException, "#A3");
1084                                 Assert.IsNotNull (ex.Message, "#A4");
1085                         }
1086
1087                         Thread t2 = new Thread (new ThreadStart (Start));
1088                         t2.IsBackground = true;
1089                         t2.Start ();
1090                         t2.Join ();
1091                         try {
1092                                 ApartmentState state = t2.ApartmentState;
1093                                 Assert.Fail ("#B1: " + state.ToString ());
1094                         } catch (ThreadStateException ex) {
1095                                 Assert.AreEqual (typeof (ThreadStateException), ex.GetType (), "#B2");
1096                                 Assert.IsNull (ex.InnerException, "#B3");
1097                                 Assert.IsNotNull (ex.Message, "#B4");
1098                         }
1099                 }
1100
1101                 [Test]
1102                 public void ApartmentState_BackGround ()
1103                 {
1104                         Thread t1 = new Thread (new ThreadStart (Start));
1105                         t1.IsBackground = true;
1106                         Assert.AreEqual (ApartmentState.Unknown, t1.ApartmentState, "#1");
1107                         t1.ApartmentState = ApartmentState.STA;
1108                         Assert.AreEqual (ApartmentState.STA, t1.ApartmentState, "#2");
1109                 }
1110
1111                 [Test]
1112                 public void TestApartmentState ()
1113                 {
1114                         Thread t1 = new Thread (new ThreadStart (Start));
1115                         Thread t2 = new Thread (new ThreadStart (Start));
1116                         Thread t3 = new Thread (new ThreadStart (Start));
1117
1118                         Assert.AreEqual (ApartmentState.Unknown, t1.ApartmentState, "Thread1 Default");
1119                         Assert.AreEqual (ApartmentState.Unknown, t2.ApartmentState, "Thread2 Default");
1120                         Assert.AreEqual (ApartmentState.Unknown, t3.ApartmentState, "Thread3 Default");
1121
1122                         t1.ApartmentState = ApartmentState.STA;
1123                         Assert.AreEqual (ApartmentState.STA, t1.ApartmentState, "Thread1 Set Once");
1124                         t1.ApartmentState = ApartmentState.MTA;
1125                         Assert.AreEqual (ApartmentState.STA, t1.ApartmentState, "Thread1 Set Twice");
1126
1127                         t2.ApartmentState = ApartmentState.MTA;
1128                         Assert.AreEqual (ApartmentState.MTA, t2.ApartmentState, "Thread2 Set Once");
1129                         t2.ApartmentState = ApartmentState.STA;
1130                         Assert.AreEqual (ApartmentState.MTA, t2.ApartmentState, "Thread2 Set Twice");
1131
1132                         bool exception_occured = false;
1133                         try {
1134                                 t3.ApartmentState = ApartmentState.Unknown;
1135                         }
1136                         catch (Exception) {
1137                                 exception_occured = true;
1138                         }
1139                         Assert.AreEqual (ApartmentState.Unknown, t3.ApartmentState, "Thread3 Set Invalid");
1140 #if NET_2_0
1141                         Assert.IsFalse (exception_occured, "Thread3 Set Invalid Exception Occured");
1142 #else
1143                         Assert.IsTrue (exception_occured, "Thread3 Set Invalid Exception Occured");
1144 #endif
1145
1146                         t1.Start ();
1147                         exception_occured = false;
1148                         try {
1149                                 t1.ApartmentState = ApartmentState.STA;
1150                         }
1151                         catch (Exception) {
1152                                 exception_occured = true;
1153                         }
1154                         Assert.IsTrue (exception_occured, "Thread1 Started Invalid Exception Occured");
1155                 }
1156
1157                 [Test]
1158                 public void TestSetApartmentStateSameState ()
1159                 {
1160                         Thread t1 = new Thread (new ThreadStart (Start));
1161                         t1.SetApartmentState (ApartmentState.STA);
1162                         Assert.AreEqual (ApartmentState.STA, t1.ApartmentState, "Thread1 Set Once");
1163
1164                         t1.SetApartmentState (ApartmentState.STA);
1165                         Assert.AreEqual (ApartmentState.STA, t1.ApartmentState, "Thread1 Set twice");
1166                 }
1167
1168                 [Test]
1169                 [ExpectedException(typeof(InvalidOperationException))]
1170                 public void TestSetApartmentStateDiffState ()
1171                 {
1172                         Thread t1 = new Thread (new ThreadStart (Start));
1173                         t1.SetApartmentState (ApartmentState.STA);
1174                         Assert.AreEqual (ApartmentState.STA, t1.ApartmentState, "Thread1 Set Once");
1175
1176                         t1.SetApartmentState (ApartmentState.MTA);
1177                 }
1178
1179                 [Test]
1180                 public void TestTrySetApartmentState ()
1181                 {
1182                         Thread t1 = new Thread (new ThreadStart (Start));
1183                         t1.SetApartmentState (ApartmentState.STA);
1184                         Assert.AreEqual (ApartmentState.STA, t1.ApartmentState, "#1");
1185
1186                         bool result = t1.TrySetApartmentState (ApartmentState.MTA);
1187                         Assert.IsFalse (result, "#2");
1188
1189                         result = t1.TrySetApartmentState (ApartmentState.STA);
1190                         Assert.IsTrue (result, "#3");
1191                 }
1192
1193                 [Test]
1194                 public void TestTrySetApartmentStateRunning ()
1195                 {
1196                         Thread t1 = new Thread (new ThreadStart (Start));
1197                         t1.SetApartmentState (ApartmentState.STA);
1198                         Assert.AreEqual (ApartmentState.STA, t1.ApartmentState, "#1");
1199
1200                         t1.Start ();
1201
1202                         try {
1203                                 t1.TrySetApartmentState (ApartmentState.STA);
1204                                 Assert.Fail ("#2");
1205                         } catch (ThreadStateException) {
1206                         }
1207
1208                         t1.Join ();
1209                 }
1210
1211                 [Test]
1212                 public void Volatile () {
1213                         double v3 = 55667;
1214                         Thread.VolatileWrite (ref v3, double.MaxValue);
1215                         Assert.AreEqual (v3, double.MaxValue);
1216
1217                         float v4 = 1;
1218                         Thread.VolatileWrite (ref v4, float.MaxValue);
1219                         Assert.AreEqual (v4, float.MaxValue);
1220                 }
1221
1222                 [Test]
1223                 public void Culture ()
1224                 {
1225                         Assert.IsNotNull (Thread.CurrentThread.CurrentCulture, "CurrentCulture");
1226                         Assert.IsNotNull (Thread.CurrentThread.CurrentUICulture, "CurrentUICulture");
1227                 }
1228
1229                 [Test]
1230                 public void ThreadStartSimple ()
1231                 {
1232                         int i = 0;
1233                         Thread t = new Thread (delegate () {
1234                                 // ensure the NSAutoreleasePool works
1235                                 i++;
1236                         });
1237                         t.Start ();
1238                         t.Join ();
1239                         Assert.AreEqual (1, i, "ThreadStart");
1240                 }
1241
1242                 [Test]
1243                 public void ParametrizedThreadStart ()
1244                 {
1245                         int i = 0;
1246                         object arg = null;
1247                         Thread t = new Thread (delegate (object obj) {
1248                                 // ensure the NSAutoreleasePool works
1249                                 i++;
1250                                 arg = obj;
1251                         });
1252                         t.Start (this);
1253                         t.Join ();
1254
1255                         Assert.AreEqual (1, i, "ParametrizedThreadStart");
1256                         Assert.AreEqual (this, arg, "obj");
1257                 }
1258
1259                 [Test]
1260                 public void SetNameTpThread () {
1261                         ThreadPool.QueueUserWorkItem(new WaitCallback(ThreadProc));
1262                 }
1263
1264                 static void ThreadProc(Object stateInfo) {
1265                         Thread.CurrentThread.Name = "My Worker";
1266                 }
1267         }
1268
1269         public class TestUtil
1270         {
1271                 public static void WaitForNotAlive (Thread t, string s)
1272                 {
1273                         WhileAlive (t, true, s);
1274                 }
1275
1276                 public static void WaitForAlive (Thread t, string s)
1277                 {
1278                         WhileAlive (t, false, s);
1279                 }
1280
1281                 public static bool WaitForAliveOrStop (Thread t, string s)
1282                 {
1283                         return WhileAliveOrStop (t, false, s);
1284                 }
1285
1286                 public static void WhileAlive (Thread t, bool alive, string s)
1287                 {
1288                         DateTime ti = DateTime.Now;
1289                         while (t.IsAlive == alive) {
1290                                 if ((DateTime.Now - ti).TotalSeconds > 10) {
1291                                         if (alive) Assert.Fail ("Timeout while waiting for not alive state. " + s);
1292                                         else Assert.Fail ("Timeout while waiting for alive state. " + s);
1293                                 }
1294                         }
1295                 }
1296
1297                 public static bool WhileAliveOrStop (Thread t, bool alive, string s)
1298                 {
1299                         DateTime ti = DateTime.Now;
1300                         while (t.IsAlive == alive) {
1301                                 if (t.ThreadState == ThreadState.Stopped)
1302                                         return false;
1303
1304                                 if ((DateTime.Now - ti).TotalSeconds > 10) {
1305                                         if (alive) Assert.Fail ("Timeout while waiting for not alive state. " + s);
1306                                         else Assert.Fail ("Timeout while waiting for alive state. " + s);
1307                                 }
1308                         }
1309
1310                         return true;
1311                 }
1312         }
1313 }