mcs/class/corlib/Test/System.Collections.Generic/ListTest.cs

   1 //
   2 // MonoTests.System.Collections.Generic.Test.ListTest
   3 //
   4 // Authors:
   5 //      David Waite (mass@akuma.org)
   6 //      Andres G. Aragoneses (andres.aragoneses@7digital.com)
   7 //
   8 // Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
   9 // Copyright (C) 2005 David Waite (mass@akuma.org)
  10 // Copyright 2011 Xamarin Inc (http://www.xamarin.com).
  11 // Copyright 2012 7digital Ltd (http://www.7digital.com).
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 using System;
  34 using System.Collections;
  35 using System.Collections.Generic;
  36 using System.Collections.ObjectModel;
  37 using System.IO;
  38 using System.Runtime.Serialization.Formatters.Binary;
  39 using System.Text;
  40
  41 using NUnit.Framework;
  42
  43 namespace MonoTests.System.Collections.Generic {
  44
  45         class GenericComparer<T> : IComparer<T> {
  46
  47                 private bool called = false;
  48
  49                 public bool Called {
  50                         get {
  51                                 bool result = called;
  52                                 called = false;
  53                                 return called;
  54                         }
  55                 }
  56
  57                 public int Compare (T x, T y)
  58                 {
  59                         called = true;
  60                         return 0;
  61                 }
  62         }
  63
  64         [TestFixture]
  65         public class ListTest
  66         {
  67                 static byte [] _serializedList = new byte [] {
  68                         0x00, 0x01, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x01, 0x00,
  69                         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x01, 0x00, 0x00, 0x00,
  70                         0x7e, 0x53, 0x79, 0x73, 0x74, 0x65, 0x6d, 0x2e, 0x43, 0x6f, 0x6c,
  71                         0x6c, 0x65, 0x63, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x2e, 0x47, 0x65,
  72                         0x6e, 0x65, 0x72, 0x69, 0x63, 0x2e, 0x4c, 0x69, 0x73, 0x74, 0x60,
  73                         0x31, 0x5b, 0x5b, 0x53, 0x79, 0x73, 0x74, 0x65, 0x6d, 0x2e, 0x49,
  74                         0x6e, 0x74, 0x33, 0x32, 0x2c, 0x20, 0x6d, 0x73, 0x63, 0x6f, 0x72,
  75                         0x6c, 0x69, 0x62, 0x2c, 0x20, 0x56, 0x65, 0x72, 0x73, 0x69, 0x6f,
  76                         0x6e, 0x3d, 0x32, 0x2e, 0x30, 0x2e, 0x30, 0x2e, 0x30, 0x2c, 0x20,
  77                         0x43, 0x75, 0x6c, 0x74, 0x75, 0x72, 0x65, 0x3d, 0x6e, 0x65, 0x75,
  78                         0x74, 0x72, 0x61, 0x6c, 0x2c, 0x20, 0x50, 0x75, 0x62, 0x6c, 0x69,
  79                         0x63, 0x4b, 0x65, 0x79, 0x54, 0x6f, 0x6b, 0x65, 0x6e, 0x3d, 0x62,
  80                         0x37, 0x37, 0x61, 0x35, 0x63, 0x35, 0x36, 0x31, 0x39, 0x33, 0x34,
  81                         0x65, 0x30, 0x38, 0x39, 0x5d, 0x5d, 0x03, 0x00, 0x00, 0x00, 0x06,
  82                         0x5f, 0x69, 0x74, 0x65, 0x6d, 0x73, 0x05, 0x5f, 0x73, 0x69, 0x7a,
  83                         0x65, 0x08, 0x5f, 0x76, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e, 0x07,
  84                         0x00, 0x00, 0x08, 0x08, 0x08, 0x09, 0x02, 0x00, 0x00, 0x00, 0x03,
  85                         0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x0f, 0x02, 0x00, 0x00,
  86                         0x00, 0x04, 0x00, 0x00, 0x00, 0x08, 0x05, 0x00, 0x00, 0x00, 0x00,
  87                         0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  88                         0x0b };
  89                 int [] _list1_contents;
  90                 List <int> _list1;
  91
  92                 [SetUp]
  93                 public void SetUp ()
  94                 {
  95                         // FIXME arrays currently do not support generic collection
  96                         // interfaces
  97                         _list1_contents = new int [] { 55, 50, 22, 80, 56, 52, 40, 63 };
  98                         // _list1 = new List <int> (_list1_contents);
  99
 100                         _list1 = new List <int> (8);
 101                         foreach (int i in _list1_contents)
 102                                 _list1.Add (i);
 103                 }
 104
 105                 [Test]  // This was for bug #74980
 106                 public void InsertTest ()
 107                 {
 108                         List <string> test = new List <string> ();
 109                         test.Insert (0, "a");
 110                         test.Insert (0, "b");
 111                         test.Insert (1, "c");
 112
 113                         Assert.AreEqual (3, test.Count);
 114                         Assert.AreEqual ("b", test [0]);
 115                         Assert.AreEqual ("c", test [1]);
 116                         Assert.AreEqual ("a", test [2]);
 117                 }
 118
 119                 [Test]
 120                 public void InsertRangeTest ()
 121                 {
 122                         int count = _list1.Count;
 123                         // FIXME arrays currently do not support generic collection
 124                         // interfaces
 125                         int [] items = {1, 2, 3};
 126                         // List <int> newRange = new List <int> (items);
 127                         List <int> newRange = new List <int> (3);
 128                         foreach (int i in items)
 129                                 newRange.Add (i);
 130                         _list1.InsertRange (1, newRange);
 131                         Assert.AreEqual (count + 3, _list1.Count);
 132                         Assert.AreEqual (55, _list1 [0]);
 133                         Assert.AreEqual (1, _list1 [1]);
 134                         Assert.AreEqual (2, _list1 [2]);
 135                         Assert.AreEqual (3, _list1 [3]);
 136                         Assert.AreEqual (50, _list1 [4]);
 137
 138                         newRange = new List <int> ();
 139                         List <int> li = new List <int> ();
 140                         li.Add (1);
 141                         newRange.InsertRange (0, li);
 142                         newRange.InsertRange (newRange.Count, li);
 143                         Assert.AreEqual (2, newRange.Count);
 144                 }
 145
 146                 [Test]
 147                 public void InsertSelfTest()
 148                 {
 149                         List <int> range = new List <int> (5);
 150                         for (int i = 0; i < 5; ++ i)
 151                                 range.Add (i);
 152
 153                         range.InsertRange(2, range);
 154                         Assert.AreEqual (10, range.Count);
 155                         Assert.AreEqual (0, range [0]);
 156                         Assert.AreEqual (1, range [1]);
 157                         Assert.AreEqual (0, range [2]);
 158                         Assert.AreEqual (1, range [3]);
 159                         Assert.AreEqual (2, range [4]);
 160                         Assert.AreEqual (3, range [5]);
 161                         Assert.AreEqual (4, range [6]);
 162                         Assert.AreEqual (2, range [7]);
 163                         Assert.AreEqual (3, range [8]);
 164                         Assert.AreEqual (4, range [9]);
 165                 }
 166
 167                 [Test, ExpectedException (typeof (ArgumentNullException))]
 168                 public void InsertRangeNullTest ()
 169                 {
 170                         IEnumerable <int> n = null;
 171                         _list1.InsertRange (0, n);
 172                 }
 173
 174                 [Test, ExpectedException (typeof (ArgumentOutOfRangeException))]
 175                 public void InsertRangeNegativeIndexTest ()
 176                 {
 177                         _list1.InsertRange (-1, _list1);
 178                 }
 179
 180                 [Test]
 181                 public void IndexOfTest ()
 182                 {
 183                         List <int> l = new List <int> ();
 184
 185                         l.Add (100);
 186                         l.Add (200);
 187
 188                         Assert.AreEqual (1, l.IndexOf (200), "Could not find value");
 189                 }
 190
 191                 [Test, ExpectedException(typeof (ArgumentException))]
 192                 public void IList_InsertInvalidType1 ()
 193                 {
 194                         IList list = _list1 as IList;
 195                         list.Insert(0, new object());
 196                 }
 197
 198                 [Test, ExpectedException(typeof (ArgumentNullException))]
 199                 public void IList_InsertInvalidType2 ()
 200                 {
 201                         IList list = _list1 as IList;
 202                         list.Insert(0, null);
 203                 }
 204
 205                 [Test, ExpectedException(typeof (ArgumentException))]
 206                 public void IList_AddInvalidType1()
 207                 {
 208                         IList list = _list1 as IList;
 209                         list.Add(new object());
 210                 }
 211
 212                 [Test, ExpectedException(typeof (ArgumentNullException))]
 213                 public void IList_AddInvalidType2()
 214                 {
 215                         IList list = _list1 as IList;
 216                         list.Add(null);
 217                 }
 218
 219                 [Test]
 220                 public void IList_RemoveInvalidType()
 221                 {
 222                         IList list = _list1 as IList;
 223                         int nCount = list.Count;
 224                         list.Remove(new object());
 225                         Assert.AreEqual(nCount, list.Count);
 226
 227                         list.Remove(null);
 228                         Assert.AreEqual(nCount, list.Count);
 229                 }
 230
 231                 [Test, ExpectedException (typeof (ArgumentOutOfRangeException))]
 232                 public void IndexOfOutOfRangeTest ()
 233                 {
 234                         List <int> l = new List <int> (4);
 235                         l.IndexOf (0, 0, 4);
 236                 }
 237
 238                 [Test]
 239                 public void GetRangeTest ()
 240                 {
 241                         List <int> r = _list1.GetRange (2, 4);
 242                         Assert.AreEqual (4, r.Count);
 243                         Assert.AreEqual (22, r [0]);
 244                         Assert.AreEqual (80, r [1]);
 245                         Assert.AreEqual (56, r [2]);
 246                         Assert.AreEqual (52, r [3]);
 247                 }
 248
 249                 [Test]
 250                 public void EnumeratorTest ()
 251                 {
 252                         List <int>.Enumerator e = _list1.GetEnumerator ();
 253                         for (int i = 0; i < _list1_contents.Length; i++)
 254                         {
 255                                 Assert.IsTrue (e.MoveNext ());
 256                                 Assert.AreEqual (_list1_contents [i], e.Current);
 257                         }
 258                         Assert.IsFalse (e.MoveNext ());
 259                 }
 260
 261                 [Test]
 262                 public void ConstructWithSizeTest ()
 263                 {
 264                         List <object> l_1 = new List <object> (1);
 265                         List <object> l_2 = new List <object> (50);
 266                         List <object> l_3 = new List <object> (0);
 267
 268                         Assert.AreEqual (1, l_1.Capacity);
 269                         Assert.AreEqual (50, l_2.Capacity);
 270                         Assert.AreEqual (0, l_3.Capacity);
 271                 }
 272
 273                 [Test, ExpectedException (typeof (ArgumentOutOfRangeException))]
 274                 public void ConstructWithInvalidSizeTest ()
 275                 {
 276                         List <int> l = new List <int> (-1);
 277                 }
 278
 279                 [Test]
 280                 public void ConstructWithCollectionTest ()
 281                 {
 282                         List <int> l1 = new List <int> (_list1);
 283                         Assert.AreEqual (_list1.Count, l1.Count);
 284                         Assert.AreEqual (l1.Count, l1.Capacity);
 285                         for (int i = 0; i < l1.Count; i++)
 286                                 Assert.AreEqual (_list1 [i], l1 [i]);
 287
 288                         var input = new [] { "a", "b", "c" };
 289                         var l2 = new List<string>(input);
 290                         Assert.AreEqual (3, l2.Capacity);
 291                 }
 292
 293                 [Test, ExpectedException (typeof (ArgumentNullException))]
 294                 public void ConstructWithInvalidCollectionTest ()
 295                 {
 296                         List <int> n = null;
 297                         List <int> l1 = new List <int> (n);
 298                 }
 299
 300                 [Test]
 301                 public void AddTest ()
 302                 {
 303                         int count = _list1.Count;
 304                         _list1.Add (-1);
 305                         Assert.AreEqual (count + 1, _list1.Count);
 306                         Assert.AreEqual (-1, _list1 [_list1.Count - 1]);
 307                 }
 308
 309                 [Test]
 310                 public void AddRangeTest ()
 311                 {
 312                         int count = _list1.Count;
 313                         // FIXME arrays currently do not support generic collection
 314                         // interfaces
 315                         int [] range = { -1, -2, -3 };
 316                         List <int> tmp = new List <int> (3);
 317                         foreach (int i in range)
 318                                 tmp.Add (i);
 319                         // _list1.AddRange (range);
 320                         _list1.AddRange (tmp);
 321
 322                         Assert.AreEqual (count + 3, _list1.Count);
 323                         Assert.AreEqual (-1, _list1 [_list1.Count - 3]);
 324                         Assert.AreEqual (-2, _list1 [_list1.Count - 2]);
 325                         Assert.AreEqual (-3, _list1 [_list1.Count - 1]);
 326                 }
 327
 328                 [Test, ExpectedException (typeof (ArgumentNullException))]
 329                 public void AddNullRangeTest ()
 330                 {
 331                         int [] n = null;
 332                         _list1.AddRange (n);
 333                 }
 334
 335                 [Test]
 336                 public void BinarySearchTest ()
 337                 {
 338                         List <int> l = new List <int> (_list1);
 339                         l.Sort ();
 340                         Assert.AreEqual (0, l.BinarySearch (22));
 341                         Assert.AreEqual (-2, l.BinarySearch (23));
 342                         Assert.AreEqual (- (l.Count + 1), l.BinarySearch (int.MaxValue));
 343                 }
 344
 345
 346                 [Test]
 347                 public void DeserializeTest ()
 348                 {
 349                         MemoryStream ms = new MemoryStream ();
 350                         ms.Write (_serializedList, 0, _serializedList.Length);
 351                         ms.Position = 0;
 352
 353                         BinaryFormatter bf = new BinaryFormatter ();
 354                         List<int> list = (List<int>) bf.Deserialize (ms);
 355                         Assert.AreEqual (3, list.Count, "#1");
 356                         Assert.AreEqual (5, list [0], "#2");
 357                         Assert.AreEqual (0, list [1], "#3");
 358                         Assert.AreEqual (7, list [2], "#4");
 359                 }
 360
 361                 [Test]
 362                 public void SortTest ()
 363                 {
 364                         List <int> l = new List <int> (_list1);
 365                         l.Sort ();
 366                         Assert.AreEqual (_list1.Count, l.Count);
 367                         Assert.AreEqual (22, l [0]);
 368                         int minimum = 22;
 369                         foreach (int i in l)
 370                         {
 371                                 Assert.IsTrue (minimum <= i);
 372                                 minimum = i;
 373                         }
 374                 }
 375
 376                 [Test]
 377                 public void ClearTest ()
 378                 {
 379                         int capacity = _list1.Capacity;
 380                         _list1.Clear ();
 381                         Assert.AreEqual (0, _list1.Count);
 382                         Assert.AreEqual (capacity, _list1.Capacity);
 383                 }
 384
 385                 [Test]
 386                 public void ContainsTest ()
 387                 {
 388                         Assert.IsTrue (_list1.Contains (22));
 389                         Assert.IsFalse (_list1.Contains (23));
 390                 }
 391
 392                 private string StringConvert (int i)
 393                 {
 394                         return i.ToString ();
 395                 }
 396
 397                 [Test]
 398                 public void ConvertAllTest ()
 399                 {
 400                         List <string> s = _list1.ConvertAll ( (Converter <int, string>)StringConvert);
 401                         Assert.AreEqual (_list1.Count, s.Count);
 402                         Assert.AreEqual ("55", s [0]);
 403                 }
 404
 405                 [Test]
 406                 public void CopyToTest ()
 407                 {
 408                         int [] a = new int [2];
 409                         _list1.CopyTo (1, a, 0, 2);
 410                         Assert.AreEqual (50, a [0]);
 411                         Assert.AreEqual (22, a [1]);
 412
 413                         int [] b = new int [_list1.Count + 1];
 414                         b [_list1.Count] = 555;
 415                         _list1.CopyTo (b);
 416                         Assert.AreEqual (55, b [0]);
 417                         Assert.AreEqual (555, b [_list1.Count]);
 418
 419                         b [0] = 888;
 420                         _list1.CopyTo (b, 1);
 421                         Assert.AreEqual (888, b [0]);
 422                         Assert.AreEqual (55, b [1]);
 423                 }
 424
 425                 [Test, ExpectedException (typeof (ArgumentNullException))]
 426                 public void CopyToNullTest ()
 427                 {
 428                         int [] a = null;
 429                         _list1.CopyTo (0, a, 0, 0);
 430                 }
 431
 432                 static bool FindMultipleOfThree (int i)
 433                 {
 434                         return (i % 3) == 0;
 435                 }
 436
 437                 static bool FindMultipleOfFour (int i)
 438                 {
 439                         return (i % 4) == 0;
 440                 }
 441
 442                 static bool FindMultipleOfTwelve (int i)
 443                 {
 444                         return (i % 12) == 0;
 445                 }
 446
 447                 [Test]
 448                 public void FindTest ()
 449                 {
 450                         int i = _list1.Find (FindMultipleOfThree);
 451                         Assert.AreEqual (63, i);
 452
 453                         i = _list1.Find (FindMultipleOfTwelve);
 454                         Assert.AreEqual (default (int), i);
 455                 }
 456
 457                 [Test, ExpectedException (typeof (ArgumentNullException))]
 458                 public void FindNullTest ()
 459                 {
 460                         int i = _list1.Find (null);
 461                 }
 462
 463                 [Test]
 464                 public void FindAllSmallTest ()
 465                 {
 466                         List <int> findings = _list1.FindAll (FindMultipleOfFour);
 467                         Assert.AreEqual (4, findings.Count);
 468                         Assert.AreEqual (80, findings [0]);
 469                         Assert.AreEqual (56, findings [1]);
 470                         Assert.AreEqual (52, findings [2]);
 471                         Assert.AreEqual (40, findings [3]);
 472
 473                         findings = _list1.FindAll (FindMultipleOfTwelve);
 474                         Assert.IsNotNull (findings);
 475                         Assert.AreEqual (0, findings.Count);
 476                 }
 477
 478                 [Test]
 479                 public void FindAllMediumTest ()
 480                 {
 481                         List <int> integers = new List <int> (10000);
 482                         for (int i = 1; i <= 10000; i++)
 483                                 integers.Add (i);
 484
 485                         List <int> results = integers.FindAll (FindMultipleOfFour);
 486
 487                         Assert.IsNotNull (results);
 488                         Assert.AreEqual (2500, results.Count);
 489
 490                         results = integers.FindAll (FindMultipleOfTwelve);
 491
 492                         Assert.IsNotNull (results);
 493                         Assert.AreEqual (833, results.Count);
 494                 }
 495
 496                 [Test]
 497                 public void FindAllLargeTest ()
 498                 {
 499                         List <int> integers = new List <int> (70000);
 500                         for (int i = 1; i <= 80000; i++)
 501                                 integers.Add (i);
 502
 503                         List <int> results = integers.FindAll (FindMultipleOfFour);
 504
 505                         Assert.IsNotNull (results);
 506                         Assert.AreEqual (20000, results.Count);
 507
 508                         results = integers.FindAll (FindMultipleOfTwelve);
 509
 510                         Assert.IsNotNull (results);
 511                         Assert.AreEqual (6666, results.Count);
 512                 }
 513
 514                 [Test, ExpectedException (typeof (ArgumentNullException))]
 515                 public void FindAllNullTest ()
 516                 {
 517                         List <int> findings = _list1.FindAll (null);
 518                 }
 519
 520                 [Test]
 521                 public void FindIndexTest ()
 522                 {
 523                         int i = _list1.FindIndex (FindMultipleOfThree);
 524                         Assert.AreEqual (7, i);
 525
 526                         i = _list1.FindIndex (FindMultipleOfTwelve);
 527                         Assert.AreEqual (-1, i);
 528
 529                         var a = new List<int> () { 2, 2, 2, 3, 2 };
 530                         Assert.AreEqual (2, a.FindIndex (2, 2, l => true));
 531                 }
 532
 533                 [Test]
 534                 public void FindIndex_Invalid ()
 535                 {
 536                         try {
 537                                 _list1.FindIndex (null);
 538                                 Assert.Fail ("#1");
 539                         } catch (ArgumentNullException) {
 540                         }
 541
 542                         try {
 543                                 _list1.FindIndex (-1, l => true);
 544                                 Assert.Fail ("#2");
 545                         } catch (ArgumentOutOfRangeException) {
 546                         }
 547
 548                         try {
 549                                 _list1.FindIndex (-1, 0, l => true);
 550                                 Assert.Fail ("#2b");
 551                         } catch (ArgumentOutOfRangeException) {
 552                         }
 553
 554                         try {
 555                                 _list1.FindIndex (0, -1, l => true);
 556                                 Assert.Fail ("#3");
 557                         } catch (ArgumentOutOfRangeException) {
 558                         }
 559
 560                         try {
 561                                 _list1.FindIndex (100, l => true);
 562                                 Assert.Fail ("#4");
 563                         } catch (ArgumentOutOfRangeException) {
 564                         }
 565
 566                         try {
 567                                 _list1.FindIndex (100, 0, l => true);
 568                                 Assert.Fail ("#4b");
 569                         } catch (ArgumentOutOfRangeException) {
 570                         }
 571
 572                         try {
 573                                 _list1.FindIndex (7, 2, l => true);
 574                                 Assert.Fail ("#5");
 575                         } catch (ArgumentOutOfRangeException) {
 576                         }
 577                 }
 578
 579                 [Test]
 580                 public void FindLastTest ()
 581                 {
 582                         int i = _list1.FindLast (FindMultipleOfFour);
 583                         Assert.AreEqual (40, i);
 584
 585                         i = _list1.FindLast (FindMultipleOfTwelve);
 586                         Assert.AreEqual (default (int), i);
 587                 }
 588
 589                 [Test, ExpectedException (typeof (ArgumentNullException))]
 590                 public void FindLastNullTest ()
 591                 {
 592                         int i = _list1.FindLast (null);
 593                 }
 594
 595                 [Test]
 596                 public void ForEachTest ()
 597                 {
 598                         int i = 0;
 599                         _list1.ForEach (delegate (int j) { i += j; });
 600
 601                         Assert.AreEqual (418, i);
 602                 }
 603
 604                 [Test]
 605                 public void ForEach_Modified ()
 606                 {
 607                         try {
 608                                 _list1.ForEach (l => _list1.Add (0));
 609                                 Assert.Fail ();
 610                         } catch (InvalidOperationException) {
 611                         }
 612                 }
 613
 614                 [Test]
 615                 public void FindLastIndexTest ()
 616                 {
 617                         int i = _list1.FindLastIndex (FindMultipleOfFour);
 618                         Assert.AreEqual (6, i);
 619
 620                         i = _list1.FindLastIndex (5, FindMultipleOfFour);
 621                         Assert.AreEqual (5, i);
 622
 623                         i = _list1.FindIndex (FindMultipleOfTwelve);
 624                         Assert.AreEqual (-1, i);
 625
 626                         Assert.AreEqual (2, _list1.FindLastIndex (2, 3, l => true));
 627                         Assert.AreEqual (2, _list1.FindLastIndex (2, 2, l => true));
 628                         Assert.AreEqual (1, _list1.FindLastIndex (1, 2, l => true));
 629                 }
 630
 631                 [Test]
 632                 public void FindLastIndex_Invalid ()
 633                 {
 634                         try {
 635                                 _list1.FindLastIndex (null);
 636                                 Assert.Fail ("#1");
 637                         } catch (ArgumentNullException) {
 638                         }
 639
 640                         try {
 641                                 _list1.FindLastIndex (-1, l => true);
 642                                 Assert.Fail ("#2");
 643                         } catch (ArgumentOutOfRangeException) {
 644                         }
 645
 646                         try {
 647                                 _list1.FindLastIndex (-1, 0, l => true);
 648                                 Assert.Fail ("#2b");
 649                         } catch (ArgumentOutOfRangeException) {
 650                         }
 651
 652                         try {
 653                                 _list1.FindLastIndex (0, -1, l => true);
 654                                 Assert.Fail ("#3");
 655                         } catch (ArgumentOutOfRangeException) {
 656                         }
 657
 658                         try {
 659                                 _list1.FindLastIndex (100, l => true);
 660                                 Assert.Fail ("#4");
 661                         } catch (ArgumentOutOfRangeException) {
 662                         }
 663
 664                         try {
 665                                 _list1.FindLastIndex (100, 0, l => true);
 666                                 Assert.Fail ("#4b");
 667                         } catch (ArgumentOutOfRangeException) {
 668                         }
 669
 670                         try {
 671                                 _list1.FindLastIndex (2, 4, l => true);
 672                                 Assert.Fail ("#5");
 673                         } catch (ArgumentOutOfRangeException) {
 674                         }
 675                 }
 676
 677                 [Test]
 678                 public void RemoveTest ()
 679                 {
 680                         int count = _list1.Count;
 681                         bool result = _list1.Remove (22);
 682                         Assert.IsTrue (result);
 683                         Assert.AreEqual (count - 1, _list1.Count);
 684
 685                         Assert.AreEqual (-1, _list1.IndexOf (22));
 686
 687                         result = _list1.Remove (0);
 688                         Assert.IsFalse (result);
 689                 }
 690
 691                 [Test]
 692                 public void RemoveAllTest ()
 693                 {
 694                         int count = _list1.Count;
 695                         int removedCount = _list1.RemoveAll (FindMultipleOfFour);
 696                         Assert.AreEqual (4, removedCount);
 697                         Assert.AreEqual (count - 4, _list1.Count);
 698
 699                         removedCount = _list1.RemoveAll (FindMultipleOfTwelve);
 700                         Assert.AreEqual (0, removedCount);
 701                         Assert.AreEqual (count - 4, _list1.Count);
 702                 }
 703
 704                 [Test]
 705                 public void RemoveAtTest ()
 706                 {
 707                         int count = _list1.Count;
 708                         _list1.RemoveAt (0);
 709                         Assert.AreEqual (count - 1, _list1.Count);
 710                         Assert.AreEqual (50, _list1 [0]);
 711                 }
 712
 713                 [Test, ExpectedException (typeof (ArgumentOutOfRangeException))]
 714                 public void RemoveOutOfRangeTest ()
 715                 {
 716                         _list1.RemoveAt (_list1.Count);
 717                 }
 718
 719                 [Test]
 720                 public void RemoveRangeTest ()
 721                 {
 722                         int count = _list1.Count;
 723                         _list1.RemoveRange (1, 2);
 724                         Assert.AreEqual (count - 2, _list1.Count);
 725                         Assert.AreEqual (55, _list1 [0]);
 726                         Assert.AreEqual (80, _list1 [1]);
 727
 728                         _list1.RemoveRange (0, 0);
 729                         Assert.AreEqual (count - 2, _list1.Count);
 730                 }
 731
 732                 [Test]
 733                 public void RemoveRangeFromEmptyListTest ()
 734                 {
 735                         List<int> l = new List<int> ();
 736                         l.RemoveRange (0, 0);
 737                 }
 738
 739                 [Test, ExpectedException (typeof (ArgumentException))]
 740                 public void RemoveRangeOutOfRangeTest ()
 741                 {
 742                         _list1.RemoveRange (1, _list1.Count);
 743                 }
 744
 745                 [Test]
 746                 public void ReverseTest ()
 747                 {
 748                         int count = _list1.Count;
 749                         _list1.Reverse ();
 750                         Assert.AreEqual (count, _list1.Count);
 751
 752                         Assert.AreEqual (63, _list1 [0]);
 753                         Assert.AreEqual (55, _list1 [count - 1]);
 754
 755                         _list1.Reverse (0, 2);
 756
 757                         Assert.AreEqual (40, _list1 [0]);
 758                         Assert.AreEqual (63, _list1 [1]);
 759                 }
 760
 761                 [Test, ExpectedException (typeof (ArgumentException))]
 762                 public void ReverseOutOfRangeTest ()
 763                 {
 764                         _list1.Reverse (1, _list1.Count);
 765                 }
 766
 767                 [Test]
 768                 public void ToArrayTest ()
 769                 {
 770                         int [] copiedContents = _list1.ToArray ();
 771                         Assert.IsFalse (ReferenceEquals (copiedContents, _list1_contents));
 772
 773                         Assert.AreEqual (_list1.Count, copiedContents.Length);
 774                         Assert.AreEqual (_list1 [0], copiedContents [0]);
 775                 }
 776
 777                 [Test]
 778                 public void TrimExcessTest ()
 779                 {
 780                         List <string> l = new List <string> ();
 781                         l.Add ("foo");
 782
 783                         Assert.IsTrue (l.Count < l.Capacity);
 784                         l.TrimExcess ();
 785                         Assert.AreEqual (l.Count, l.Capacity);
 786                 }
 787
 788                 bool IsPositive (int i)
 789                 {
 790                         return i >= 0;
 791                 }
 792
 793                 [Test]
 794                 public void TrueForAllTest ()
 795                 {
 796                         Assert.IsFalse (_list1.TrueForAll (FindMultipleOfFour));
 797                         Assert.IsTrue (_list1.TrueForAll (IsPositive));
 798                 }
 799
 800                 [Test, ExpectedException (typeof (ArgumentNullException))]
 801                 public void TrueForAllNullTest ()
 802                 {
 803                         _list1.TrueForAll (null);
 804                 }
 805
 806                 [Test, ExpectedException (typeof (ArgumentOutOfRangeException))]
 807                 public void CapacityOutOfRangeTest ()
 808                 {
 809                         _list1.Capacity = _list1.Count - 1;
 810                 }
 811
 812                 [Test]
 813                 public void BinarySearch_EmptyList ()
 814                 {
 815                         GenericComparer<int> comparer = new GenericComparer<int> ();
 816                         List<int> l = new List<int> ();
 817                         Assert.AreEqual (-1, l.BinarySearch (0, comparer), "BinarySearch");
 818                         // bug 77030 - the comparer isn't called for an empty array/list
 819                         Assert.IsFalse (comparer.Called, "Called");
 820                 }
 821
 822                 [Test]
 823                 public void BinarySearch2_EmptyList ()
 824                 {
 825                         GenericComparer<int> comparer = new GenericComparer<int> ();
 826                         List<int> l = new List<int> ();
 827                         Assert.AreEqual (-1, l.BinarySearch (0, 0, 0, comparer), "BinarySearch");
 828                         // bug 77030 - the comparer isn't called for an empty array/list
 829                         Assert.IsFalse (comparer.Called, "Called");
 830                 }
 831
 832                 [Test]
 833                 public void AddRange_Bug77019 ()
 834                 {
 835                         List<int> l = new List<int> ();
 836                         Dictionary<string, int> d = new Dictionary<string, int> ();
 837                         l.AddRange (d.Values);
 838                         Assert.AreEqual (0, l.Count, "Count");
 839                 }
 840
 841                 [Test]
 842                 public void VersionCheck_Add ()
 843                 {
 844                         List<int> list = new List<int> ();
 845                         IEnumerator enumerator = list.GetEnumerator ();
 846                         list.Add (5);
 847
 848                         try {
 849                                 enumerator.MoveNext ();
 850                                 Assert.Fail ("#1");
 851                         } catch (InvalidOperationException) {
 852                         }
 853
 854                         try {
 855                                 enumerator.Reset ();
 856                                 Assert.Fail ("#2");
 857                         } catch (InvalidOperationException) {
 858                         }
 859
 860                         enumerator = list.GetEnumerator ();
 861                         enumerator.MoveNext ();
 862                 }
 863
 864                 [Test]
 865                 public void VersionCheck_AddRange ()
 866                 {
 867                         List<int> list = new List<int> ();
 868                         IEnumerator enumerator = list.GetEnumerator ();
 869                         list.AddRange (new int [] { 5, 7 });
 870
 871                         try {
 872                                 enumerator.MoveNext ();
 873                                 Assert.Fail ("#1");
 874                         } catch (InvalidOperationException) {
 875                         }
 876
 877                         try {
 878                                 enumerator.Reset ();
 879                                 Assert.Fail ("#2");
 880                         } catch (InvalidOperationException) {
 881                         }
 882
 883                         enumerator = list.GetEnumerator ();
 884                         enumerator.MoveNext ();
 885                 }
 886
 887                 [Test]
 888                 public void VersionCheck_Clear ()
 889                 {
 890                         List<int> list = new List<int> ();
 891                         IEnumerator enumerator = list.GetEnumerator ();
 892                         list.Clear ();
 893
 894                         try {
 895                                 enumerator.MoveNext ();
 896                                 Assert.Fail ("#1");
 897                         } catch (InvalidOperationException) {
 898                         }
 899
 900                         try {
 901                                 enumerator.Reset ();
 902                                 Assert.Fail ("#2");
 903                         } catch (InvalidOperationException) {
 904                         }
 905
 906                         enumerator = list.GetEnumerator ();
 907                         enumerator.MoveNext ();
 908                 }
 909
 910                 [Test]
 911                 public void VersionCheck_Insert ()
 912                 {
 913                         List<int> list = new List<int> ();
 914                         IEnumerator enumerator = list.GetEnumerator ();
 915                         list.Insert (0, 7);
 916
 917                         try {
 918                                 enumerator.MoveNext ();
 919                                 Assert.Fail ("#1");
 920                         } catch (InvalidOperationException) {
 921                         }
 922
 923                         try {
 924                                 enumerator.Reset ();
 925                                 Assert.Fail ("#2");
 926                         } catch (InvalidOperationException) {
 927                         }
 928
 929                         enumerator = list.GetEnumerator ();
 930                         enumerator.MoveNext ();
 931                 }
 932
 933                 [Test]
 934                 public void VersionCheck_InsertRange ()
 935                 {
 936                         List<int> list = new List<int> ();
 937                         IEnumerator enumerator = list.GetEnumerator ();
 938                         list.InsertRange (0, new int [] { 5, 7 });
 939
 940                         try {
 941                                 enumerator.MoveNext ();
 942                                 Assert.Fail ("#1");
 943                         } catch (InvalidOperationException) {
 944                         }
 945
 946                         try {
 947                                 enumerator.Reset ();
 948                                 Assert.Fail ("#2");
 949                         } catch (InvalidOperationException) {
 950                         }
 951
 952                         enumerator = list.GetEnumerator ();
 953                         enumerator.MoveNext ();
 954                 }
 955
 956                 [Test]
 957                 public void VersionCheck_Remove ()
 958                 {
 959                         List<int> list = new List<int> ();
 960                         list.Add (5);
 961                         IEnumerator enumerator = list.GetEnumerator ();
 962                         // version number is not incremented if item does not exist in list
 963                         list.Remove (7);
 964                         enumerator.MoveNext ();
 965                         list.Remove (5);
 966
 967                         try {
 968                                 enumerator.MoveNext ();
 969                                 Assert.Fail ("#1");
 970                         } catch (InvalidOperationException) {
 971                         }
 972
 973                         try {
 974                                 enumerator.Reset ();
 975                                 Assert.Fail ("#2");
 976                         } catch (InvalidOperationException) {
 977                         }
 978
 979                         enumerator = list.GetEnumerator ();
 980                         enumerator.MoveNext ();
 981                 }
 982
 983                 [Test]
 984                 public void VersionCheck_RemoveAll ()
 985                 {
 986                         List<int> list = new List<int> ();
 987                         list.Add (5);
 988                         IEnumerator enumerator = list.GetEnumerator ();
 989                         // version is not incremented if there are no items to remove
 990                         list.RemoveAll (FindMultipleOfFour);
 991                         enumerator.MoveNext ();
 992                         list.Add (4);
 993
 994                         enumerator = list.GetEnumerator ();
 995                         list.RemoveAll (FindMultipleOfFour);
 996
 997                         try {
 998                                 enumerator.MoveNext ();
 999                                 Assert.Fail ("#1");
1000                         } catch (InvalidOperationException) {
1001                         }
1002
1003                         try {
1004                                 enumerator.Reset ();
1005                                 Assert.Fail ("#2");
1006                         } catch (InvalidOperationException) {
1007                         }
1008
1009                         enumerator = list.GetEnumerator ();
1010                         enumerator.MoveNext ();
1011                 }
1012
1013                 [Test]
1014                 public void VersionCheck_RemoveAt ()
1015                 {
1016                         List<int> list = new List<int> ();
1017                         list.Add (5);
1018                         IEnumerator enumerator = list.GetEnumerator ();
1019                         list.RemoveAt (0);
1020
1021                         try {
1022                                 enumerator.MoveNext ();
1023                                 Assert.Fail ("#1");
1024                         } catch (InvalidOperationException) {
1025                         }
1026
1027                         try {
1028                                 enumerator.Reset ();
1029                                 Assert.Fail ("#2");
1030                         } catch (InvalidOperationException) {
1031                         }
1032
1033                         enumerator = list.GetEnumerator ();
1034                         enumerator.MoveNext ();
1035                 }
1036
1037                 [Test]
1038                 public void VersionCheck_RemoveRange ()
1039                 {
1040                         List<int> list = new List<int> ();
1041                         list.Add (5);
1042                         IEnumerator enumerator = list.GetEnumerator ();
1043                         // version is not incremented if count is zero
1044                         list.RemoveRange (0, 0);
1045                         enumerator.MoveNext ();
1046                         enumerator.Reset ();
1047                         list.RemoveRange (0, 1);
1048
1049                         try {
1050                                 enumerator.MoveNext ();
1051                                 Assert.Fail ("#1");
1052                         } catch (InvalidOperationException) {
1053                         }
1054
1055                         try {
1056                                 enumerator.Reset ();
1057                                 Assert.Fail ("#2");
1058                         } catch (InvalidOperationException) {
1059                         }
1060
1061                         enumerator = list.GetEnumerator ();
1062                         enumerator.MoveNext ();
1063                 }
1064
1065                 [Test, ExpectedException (typeof (InvalidOperationException))] // #699182
1066                 public void VersionCheck_Indexer ()
1067                 {
1068                         var list = new List<int> () { 0, 2, 3 };
1069                         var enumerator = list.GetEnumerator ();
1070
1071                         list [0] = 1;
1072
1073                         enumerator.MoveNext ();
1074                 }
1075
1076                 [Test]
1077                 public void VersionCheck_Reverse ()
1078                 {
1079                         List<int> list = new List<int> ();
1080                         IEnumerator enumerator = list.GetEnumerator ();
1081                         list.Reverse ();
1082
1083                         try {
1084                                 enumerator.MoveNext ();
1085                                 Assert.Fail ("#A1");
1086                         } catch (InvalidOperationException) {
1087                         }
1088
1089                         try {
1090                                 enumerator.Reset ();
1091                                 Assert.Fail ("#A2");
1092                         } catch (InvalidOperationException) {
1093                         }
1094
1095                         enumerator = list.GetEnumerator ();
1096                         list.Reverse (0, 0);
1097
1098                         try {
1099                                 enumerator.MoveNext ();
1100                                 Assert.Fail ("#B1");
1101                         } catch (InvalidOperationException) {
1102                         }
1103
1104                         try {
1105                                 enumerator.Reset ();
1106                                 Assert.Fail ("#B2");
1107                         } catch (InvalidOperationException) {
1108                         }
1109
1110                         enumerator = list.GetEnumerator ();
1111                         enumerator.MoveNext ();
1112                 }
1113
1114                 class SortTestComparer: IComparer<string> {
1115
1116                         public int Compare (string s1, string s2)
1117                         {
1118                                 return String.Compare (s1, s2);
1119                         }
1120                 }
1121
1122                 [Test]
1123                 public void Sort_Bug76361 ()
1124                 {
1125                         SortTestComparer comparer = new SortTestComparer ();
1126                         List<string> l = new List<string> ();
1127                         l.Add ("foo");
1128                         l.Add ("bar");
1129                         l.Sort (comparer);
1130                         Assert.AreEqual ("bar", l[0], "0");
1131                         Assert.AreEqual ("foo", l[1], "1");
1132                         Assert.AreEqual (2, l.Count, "Count");
1133                 }
1134
1135                 // for bug #77039 test case
1136                 class GenericIComparable: IComparable<GenericIComparable> {
1137                         private int _NumberToSortOn;
1138
1139                         public int NumberToSortOn {
1140                                 get { return _NumberToSortOn; }
1141                                 set { _NumberToSortOn = value; }
1142                         }
1143
1144                         public GenericIComparable (int val)
1145                         {
1146                                 _NumberToSortOn = val;
1147                         }
1148
1149                         public int CompareTo (GenericIComparable other)
1150                         {
1151                                 return NumberToSortOn.CompareTo (other.NumberToSortOn);
1152                         }
1153                 }
1154
1155                 [Test]
1156                 public void Sort_GenericIComparable_Bug77039 ()
1157                 {
1158                         List<GenericIComparable> l = new List<GenericIComparable> ();
1159                         l.Add (new GenericIComparable (2));
1160                         l.Add (new GenericIComparable (1));
1161                         l.Add (new GenericIComparable (3));
1162                         l.Sort ();
1163                         Assert.AreEqual (1, l[0].NumberToSortOn, "0");
1164                         Assert.AreEqual (2, l[1].NumberToSortOn, "1");
1165                         Assert.AreEqual (3, l[2].NumberToSortOn, "2");
1166                 }
1167
1168                 class NonGenericIComparable: IComparable {
1169                         private int _NumberToSortOn;
1170
1171                         public int NumberToSortOn {
1172                                 get { return _NumberToSortOn; }
1173                                 set { _NumberToSortOn = value; }
1174                         }
1175
1176                         public NonGenericIComparable (int val)
1177                         {
1178                                 _NumberToSortOn = val;
1179                         }
1180
1181                         public int CompareTo (object obj)
1182                         {
1183                                 return NumberToSortOn.CompareTo ((obj as NonGenericIComparable).NumberToSortOn);
1184                         }
1185                 }
1186
1187                 [Test]
1188                 public void Sort_NonGenericIComparable ()
1189                 {
1190                         List<NonGenericIComparable> l = new List<NonGenericIComparable> ();
1191                         l.Add (new NonGenericIComparable (2));
1192                         l.Add (new NonGenericIComparable (1));
1193                         l.Add (new NonGenericIComparable (3));
1194                         l.Sort ();
1195                         Assert.AreEqual (1, l[0].NumberToSortOn, "0");
1196                         Assert.AreEqual (2, l[1].NumberToSortOn, "1");
1197                         Assert.AreEqual (3, l[2].NumberToSortOn, "2");
1198                 }
1199
1200                 class NonComparable {
1201                 }
1202
1203                 [Test]
1204                 public void Sort_GenericNonIComparable ()
1205                 {
1206                         List<NonComparable> l = new List<NonComparable> ();
1207                         l.Sort ();
1208                         // no element -> no sort -> no exception
1209                         l.Add (new NonComparable ());
1210                         l.Sort ();
1211                         // one element -> no sort -> no exception
1212                 }
1213
1214                 [Test]
1215                 [ExpectedException (typeof (InvalidOperationException))]
1216                 public void Sort_GenericNonIComparable_2 ()
1217                 {
1218                         List<NonComparable> l = new List<NonComparable> ();
1219                         l.Add (new NonComparable ());
1220                         l.Add (new NonComparable ());
1221                         l.Sort ();
1222                         // two element -> sort -> exception!
1223                 }
1224
1225                 [Test]
1226                 public void IList_Contains_InvalidType()
1227                 {
1228                         List<string> list = new List<string>();
1229                         list.Add("foo");
1230                         Assert.IsFalse (((IList)list).Contains(new object()));
1231
1232                         Assert.IsFalse (((IList)_list1).Contains(null));
1233                 }
1234
1235                 [Test]
1236                 public void IList_IndexOf_InvalidType()
1237                 {
1238                         List<string> list = new List<string>();
1239                         list.Add("foo");
1240                         Assert.AreEqual (-1, ((IList)list).IndexOf(new object()));
1241
1242                         Assert.AreEqual (-1, ((IList)_list1).IndexOf(null));
1243                 }
1244
1245                 // for bug #77277 test case
1246                 [Test]
1247                 public void Test_ContainsAndIndexOf_EquatableItem ()
1248                 {
1249                         List<EquatableClass> list = new List<EquatableClass> ();
1250                         EquatableClass item0 = new EquatableClass (0);
1251                         EquatableClass item1 = new EquatableClass (1);
1252
1253                         list.Add (item0);
1254                         list.Add (item1);
1255                         list.Add (item0);
1256
1257                         Assert.AreEqual (true, list.Contains (item0), "#0");
1258                         Assert.AreEqual (true, list.Contains (new EquatableClass (0)), "#1");
1259                         Assert.AreEqual (0, list.IndexOf (item0), "#2");
1260                         Assert.AreEqual (0, list.IndexOf (new EquatableClass (0)), "#3");
1261                         Assert.AreEqual (2, list.LastIndexOf (item0), "#4");
1262                         Assert.AreEqual (2, list.LastIndexOf (new EquatableClass (0)), "#5");
1263                 }
1264
1265                 // for bug #81387 test case
1266                 [Test]
1267                 public void Test_Contains_After_Remove ()
1268                 {
1269                         List<int> list = new List<int> ();
1270             list.Add (2);
1271
1272             list.Remove (2);
1273
1274                         Assert.AreEqual (false, list.Contains (2), "#0");
1275                 }
1276
1277                 [Test]
1278                 [ExpectedException (typeof (ArgumentOutOfRangeException))]
1279                 public void SetItem_OutOfRange()
1280                 {
1281                         List<string> list = new List<string>();
1282                         list[0] = "foo";
1283                 }
1284
1285                 [Test]
1286                 [ExpectedException (typeof (ArgumentOutOfRangeException))]
1287                 public void SetItem_IList_OutOfRange()
1288                 {
1289                         IList<string> list = new List<string>();
1290                         list[0] = "foo";
1291                 }
1292
1293                 public class EquatableClass : IEquatable<EquatableClass>
1294                 {
1295                         int _x;
1296                         public EquatableClass (int x)
1297                         {
1298                                 _x = x;
1299                         }
1300
1301                         public bool Equals (EquatableClass other)
1302                         {
1303                                 return this._x == other._x;
1304                         }
1305                 }
1306
1307                 delegate void D ();
1308                 bool Throws (D d)
1309                 {
1310                         try {
1311                                 d ();
1312                                 return false;
1313                         } catch {
1314                                 return true;
1315                         }
1316                 }
1317
1318                 [Test]
1319                 // based on #491858, #517415
1320                 public void Enumerator_Current ()
1321                 {
1322                         var e1 = new List<int>.Enumerator ();
1323                         Assert.IsFalse (Throws (delegate { var x = e1.Current; }));
1324
1325                         var d = new List<int> ();
1326                         var e2 = d.GetEnumerator ();
1327                         Assert.IsFalse (Throws (delegate { var x = e2.Current; }));
1328                         e2.MoveNext ();
1329                         Assert.IsFalse (Throws (delegate { var x = e2.Current; }));
1330                         e2.Dispose ();
1331                         Assert.IsFalse (Throws (delegate { var x = e2.Current; }));
1332
1333                         var e3 = ((IEnumerable<int>) d).GetEnumerator ();
1334                         Assert.IsFalse (Throws (delegate { var x = e3.Current; }));
1335                         e3.MoveNext ();
1336                         Assert.IsFalse (Throws (delegate { var x = e3.Current; }));
1337                         e3.Dispose ();
1338                         Assert.IsFalse (Throws (delegate { var x = e3.Current; }));
1339
1340                         var e4 = ((IEnumerable) d).GetEnumerator ();
1341                         Assert.IsTrue (Throws (delegate { var x = e4.Current; }));
1342                         e4.MoveNext ();
1343                         Assert.IsTrue (Throws (delegate { var x = e4.Current; }));
1344                         ((IDisposable) e4).Dispose ();
1345                         Assert.IsTrue (Throws (delegate { var x = e4.Current; }));
1346                 }
1347
1348                 [Test]
1349                 public void Enumerator_Reset ()
1350                 {
1351                         var l = new List<int> () {
1352                                 4
1353                         };
1354
1355                         IEnumerator<int> e = l.GetEnumerator ();
1356                         Assert.IsTrue (e.MoveNext (), "#1");
1357                         Assert.AreEqual (4, e.Current, "#2");
1358                         e.Reset ();
1359                         Assert.AreEqual (0, e.Current, "#3");
1360                 }
1361
1362                 [Test] //bug #672907
1363                 public void ICollectionCopyToExceptions ()
1364                 {
1365                         var l = new List <int> ();
1366                         ICollection x = l;
1367                         try {
1368                                 x.CopyTo (null, 0);
1369                                 Assert.Fail ("#1");
1370                         } catch (Exception e) {
1371                                 Assert.IsTrue (e is ArgumentNullException, "#2");
1372                         }
1373
1374                         try {
1375                                 x.CopyTo (new int [10], -1);
1376                                 Assert.Fail ("#3");
1377                         } catch (Exception e) {
1378                                 Assert.IsTrue (e is ArgumentOutOfRangeException, "#4");
1379                         }
1380
1381                         try {
1382                                 x.CopyTo (new int [10, 1], 0);
1383                                 Assert.Fail ("#5");
1384                         } catch (Exception e) {
1385                                 Assert.IsTrue (e is ArgumentException, "#6");
1386                         }
1387
1388                         try {
1389                                 x.CopyTo (Array.CreateInstance (typeof (int), new int [] { 10 }, new int[] { 1 }), 0);
1390                                 Assert.Fail ("#7");
1391                         } catch (Exception e) {
1392                                 Assert.IsTrue (e is ArgumentOutOfRangeException, "#8");
1393                         }
1394
1395                         l.Add (10); l.Add (20);
1396                         try {
1397                                 x.CopyTo (new int [1], 0);
1398                                 Assert.Fail ("#9");
1399                         } catch (Exception e) {
1400                                 Assert.IsTrue (e is ArgumentException, "#10");
1401                         }
1402                 }
1403
1404                 [Test]
1405                 public void LastIndexOfEmpty_2558 () {
1406                         var l = new List<int> ();
1407                         Assert.AreEqual (-1, l.IndexOf (-1));
1408                 }
1409
1410
1411 #region Enumerator mutability
1412
1413                 class Bar
1414                 {
1415                 }
1416
1417                 class Foo : IEnumerable<Bar>
1418                 {
1419                         Baz enumerator;
1420
1421                         public Foo ()
1422                         {
1423                                 enumerator = new Baz ();
1424                         }
1425
1426                         public IEnumerator<Bar> GetEnumerator ()
1427                         {
1428                                 return enumerator;
1429                         }
1430
1431                         IEnumerator IEnumerable.GetEnumerator ()
1432                         {
1433                                 return enumerator;
1434                         }
1435                 }
1436
1437                 class Baz : IEnumerator<Bar>
1438                 {
1439                         public bool DisposeWasCalled = false;
1440
1441                         public void Dispose ()
1442                         {
1443                                 DisposeWasCalled = true;
1444                         }
1445
1446                         public bool MoveNext ()
1447                         {
1448                                 return false; //assume empty collection
1449                         }
1450
1451                         public void Reset ()
1452                         {
1453                         }
1454
1455                         public Bar Current
1456                         {
1457                                 get { return null; }
1458                         }
1459
1460                         object IEnumerator.Current
1461                         {
1462                                 get { return Current; }
1463                         }
1464                 }
1465
1466                 [Test]
1467                 public void PremiseAboutDisposeBeingCalledWhenLooping ()
1468                 {
1469                         Foo enumerable = new Foo ();
1470                         Baz enumerator = enumerable.GetEnumerator () as Baz;
1471                         Assert.IsNotNull (enumerator);
1472                         Assert.AreEqual (false, enumerator.DisposeWasCalled);
1473                         foreach (var element in enumerable) ; //sic
1474                         Assert.AreEqual (true, enumerator.DisposeWasCalled);
1475                 }
1476
1477                 [Test]
1478                 public void TwoEnumeratorsOfTwoDifferentListsAreDifferent ()
1479                 {
1480                         var twoThree = new List<int> { 2, 3 };
1481                         var oneTwo = new List<int> { 2, 4 };
1482                         Assert.IsFalse (oneTwo.GetEnumerator ().Equals (twoThree.GetEnumerator ()));
1483                 }
1484
1485                 [Test]
1486                 public void TwoEnumeratorsOfTwoDifferentListsWithSameElementsAreDifferent ()
1487                 {
1488                         var twoThree = new List<int> { 2, 3 };
1489                         var anotherTwoThree = new List<int> { 2, 3 };
1490                         Assert.IsFalse(twoThree.GetEnumerator ().Equals (anotherTwoThree.GetEnumerator ()));
1491                 }
1492
1493                 [Test]
1494                 public void EnumeratorIsSameInSameListAfterSubsequentCalls ()
1495                 {
1496                         var enumerable = new List<Bar> ();
1497                         var enumerator = enumerable.GetEnumerator ();
1498                         var enumerator2 = enumerable.GetEnumerator ();
1499
1500                         Assert.IsFalse (ReferenceEquals (enumerator2, enumerator)); //because they are value-types
1501
1502                         Assert.IsTrue (enumerator2.Equals (enumerator));
1503                 }
1504
1505
1506                 [Test] // was bug in Mono 2.10.9
1507                 public void EnumeratorIsStillSameInSubsequentCallsEvenHavingADisposalInBetween ()
1508                 {
1509                         var enumerable = new List<Bar> ();
1510                         var enumerator = enumerable.GetEnumerator ();
1511                         enumerator.Dispose ();
1512                         var enumerator2 = enumerable.GetEnumerator ();
1513
1514                         Assert.IsFalse (ReferenceEquals (enumerator2, enumerator)); //because they are value-types
1515
1516                         Assert.IsTrue (enumerator2.Equals (enumerator));
1517                 }
1518
1519                 [Test]
1520                 public void EnumeratorIsObviouslyDifferentAfterListChanges ()
1521                 {
1522                         var enumerable = new List<Bar> ();
1523                         var enumerator = enumerable.GetEnumerator ();
1524                         enumerable.Add (new Bar ());
1525                         var enumerator2 = enumerable.GetEnumerator ();
1526
1527                         Assert.IsFalse (ReferenceEquals (enumerator2, enumerator)); //because they are value-types
1528
1529                         Assert.IsFalse (enumerator2.Equals (enumerator));
1530                 }
1531
1532                 [Test] // was bug in Mono 2.10.9
1533                 public void DotNetDoesntThrowObjectDisposedExceptionAfterSubsequentDisposes()
1534                 {
1535                         var enumerable = new List<Bar> ();
1536                         var enumerator = enumerable.GetEnumerator ();
1537                         Assert.AreEqual (false, enumerator.MoveNext ());
1538                         enumerator.Dispose();
1539                         Assert.AreEqual (false, enumerator.MoveNext ());
1540                 }
1541 #endregion
1542
1543
1544         }
1545 }
1546