mcs/class/System.Core/Test/System.Linq/ParallelEnumerableTests.cs

   1 // ParallelEnumerableTests.cs
   2 //
   3 // Copyright (c) 2008 Jérémie "Garuma" Laval
   4 //
   5 // Based on Enumerable test suite by Jb Evain (jbevain@novell.com)
   6 //
   7 // Permission is hereby granted, free of charge, to any person obtaining a copy
   8 // of this software and associated documentation files (the "Software"), to deal
   9 // in the Software without restriction, including without limitation the rights
  10 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11 // copies of the Software, and to permit persons to whom the Software is
  12 // furnished to do so, subject to the following conditions:
  13 //
  14 // The above copyright notice and this permission notice shall be included in
  15 // all copies or substantial portions of the Software.
  16 //
  17 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  20 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  23 // THE SOFTWARE.
  24 //
  25 //
  26
  27 #if NET_4_0
  28
  29 using System;
  30 using System.Threading;
  31 using System.Linq;
  32
  33 using System.Collections;
  34 using System.Collections.Generic;
  35
  36 using NUnit.Framework;
  37
  38 namespace MonoTests.System.Linq
  39 {
  40         [TestFixtureAttribute]
  41         public class ParallelEnumerableTests
  42         {
  43                 IEnumerable<int> baseEnumerable;
  44
  45                 [SetUpAttribute]
  46                 public void Setup ()
  47                 {
  48                         baseEnumerable = Enumerable.Range(1, 10000);
  49                 }
  50
  51                 void AreEquivalent (IEnumerable<int> syncEnumerable, IEnumerable<int> asyncEnumerable, int count)
  52                 {
  53                         int[] sync  = Enumerable.ToArray(syncEnumerable);
  54                         int[] async = Enumerable.ToArray(asyncEnumerable);
  55
  56                         // This is not AreEquals because ParallelQuery is non-deterministic (IParallelOrderedEnumerable is)
  57                         // thus the order of the initial Enumerable might not be preserved
  58                         CollectionAssert.AreEquivalent(sync, async, "#" + count);
  59                 }
  60
  61                 void AreEquivalent<T> (IEnumerable<T> syncEnumerable, IEnumerable<T> asyncEnumerable, int count)
  62                 {
  63                         T[] sync  = Enumerable.ToArray(syncEnumerable);
  64                         T[] async = Enumerable.ToArray(asyncEnumerable);
  65
  66                         // This is not AreEquals because ParallelQuery is non-deterministic (IParallelOrderedEnumerable is)
  67                         // thus the order of the initial Enumerable might not be preserved
  68                         CollectionAssert.AreEquivalent(sync, async, "#" + count);
  69                 }
  70
  71                 static void AssertAreSame<T> (IEnumerable<T> expected, IEnumerable<T> actual)
  72                 {
  73                         if (expected == null) {
  74                                 Assert.IsNull (actual);
  75                                 return;
  76                         }
  77
  78                         Assert.IsNotNull (actual);
  79
  80                         IEnumerator<T> ee = expected.GetEnumerator ();
  81                         IEnumerator<T> ea = actual.GetEnumerator ();
  82
  83                         while (ee.MoveNext ()) {
  84                                 Assert.IsTrue (ea.MoveNext (), "'" + ee.Current + "' expected.");
  85                                 Assert.AreEqual (ee.Current, ea.Current);
  86                         }
  87
  88                         if (ea.MoveNext ())
  89                                 Assert.Fail ("Unexpected element: " + ea.Current);
  90                 }
  91
  92                 public static void AssertException<T> (Action action) where T : Exception
  93                 {
  94                         try {
  95                                 action ();
  96                         }
  97                         catch (T) {
  98                                 return;
  99                         }
 100                         Assert.Fail ("Expected: " + typeof (T).Name);
 101                 }
 102
 103                 static void AssertAreSame<K, V> (K expectedKey, IEnumerable<V> expectedValues, IGrouping<K, V> actual)
 104                 {
 105                         if (expectedValues == null) {
 106                                 Assert.IsNull (actual);
 107                                 return;
 108                         }
 109
 110                         Assert.IsNotNull (actual);
 111
 112                         Assert.AreEqual (expectedKey, actual.Key);
 113
 114                         var ee = expectedValues.GetEnumerator ();
 115                         var ea = actual.GetEnumerator ();
 116
 117                         while (ee.MoveNext ()) {
 118                                 Assert.IsTrue (ea.MoveNext (), "'" + ee.Current + "' expected.");
 119                                 Assert.AreEqual (ee.Current, ea.Current);
 120                         }
 121
 122                         if (ea.MoveNext ())
 123                                 Assert.Fail ("Unexpected element: " + ee.Current);
 124                 }
 125
 126                 static void AssertAreSame<K, V> (IDictionary<K, IEnumerable<V>> expected, IEnumerable<IGrouping<K, V>> actual)
 127                 {
 128                         if (expected == null) {
 129                                 Assert.IsNull (actual);
 130                                 return;
 131                         }
 132
 133                         Assert.IsNotNull (actual);
 134
 135                         var ee = expected.GetEnumerator ();
 136                         var ea = actual.GetEnumerator ();
 137
 138                         while (ee.MoveNext ()) {
 139                                 Assert.IsTrue (ea.MoveNext (), "'" + ee.Current.Key + "' expected.");
 140                                 AssertAreSame (ee.Current.Key, ee.Current.Value, ea.Current);
 141                         }
 142
 143                         if (ea.MoveNext ())
 144                                 Assert.Fail ("Unexpected element: " + ee.Current.Key);
 145                 }
 146
 147                 static void AssertAreSame<K, V> (IDictionary<K, IEnumerable<V>> expected, ILookup<K, V> actual)
 148                 {
 149                         if (expected == null) {
 150                                 Assert.IsNull (actual);
 151                                 return;
 152                         }
 153
 154                         Assert.IsNotNull (actual);
 155
 156                         var ee = expected.GetEnumerator ();
 157                         var ea = actual.GetEnumerator ();
 158
 159                         while (ee.MoveNext ()) {
 160                                 Assert.IsTrue (ea.MoveNext (), "'" + ee.Current.Key + "' expected.");
 161                                 AssertAreSame (ee.Current.Key, ee.Current.Value, ea.Current);
 162                         }
 163
 164                         if (ea.MoveNext ())
 165                                 Assert.Fail ("Unexpected element: " + ee.Current.Key);
 166                 }
 167
 168                 static void AssertAreSame<K, V> (IDictionary<K, V> expected, IDictionary<K, V> actual)
 169                 {
 170                         if (expected == null) {
 171                                 Assert.IsNull (actual);
 172                                 return;
 173                         }
 174
 175                         Assert.IsNotNull (actual);
 176
 177                         var ee = expected.GetEnumerator ();
 178                         var ea = actual.GetEnumerator ();
 179
 180                         while (ee.MoveNext ()) {
 181                                 Assert.IsTrue (ea.MoveNext (), "'" + ee.Current.Key + ", " + ee.Current.Value + "' expected.");
 182                                 Assert.AreEqual (ee.Current.Key, ea.Current.Key);
 183                                 Assert.AreEqual (ee.Current.Value, ea.Current.Value);
 184                         }
 185
 186                         if (ea.MoveNext ())
 187                                 Assert.Fail ("Unexpected element: " + ee.Current.Key + ", " + ee.Current.Value);
 188                 }
 189
 190                 [Test]
 191                 public void SelectTestCase ()
 192                 {
 193                         ParallelTestHelper.Repeat (() => {
 194                                 IEnumerable<int> sync  = baseEnumerable.Select (i => i * i);
 195                                 IEnumerable<int> async = baseEnumerable.AsParallel ().Select (i => i * i);
 196
 197                                 AreEquivalent(sync, async, 1);
 198                         });
 199                 }
 200
 201                 [Test]
 202                 public void WhereTestCase ()
 203                 {
 204                         ParallelTestHelper.Repeat (() => {
 205                                 IEnumerable<int> sync  = baseEnumerable.Where(i => i % 2 == 0);
 206                                 IEnumerable<int> async = baseEnumerable.AsParallel().Where(i => i % 2 == 0);
 207
 208                                 AreEquivalent(sync, async, 1);
 209                         });
 210                 }
 211
 212                 [Test]
 213                 public void CountTestCase ()
 214                 {
 215                         ParallelTestHelper.Repeat (() => {
 216                                 int sync  = baseEnumerable.Count();
 217                                 int async = baseEnumerable.AsParallel().Count();
 218
 219                                 Assert.AreEqual(sync, async, "#1");
 220                         });
 221                 }
 222
 223                 [Test]
 224                 public void AggregateTestCase ()
 225                 {
 226                         ParallelTestHelper.Repeat (() => {
 227                                 ParallelQuery<int> range = ParallelEnumerable.Repeat (5, 2643);
 228                                 double average = range.Aggregate(() => new double[2],
 229                                                                  (acc, elem) => { acc[0] += elem; acc[1]++; return acc; },
 230                                 (acc1, acc2) => { acc1[0] += acc2[0]; acc1[1] += acc2[1]; return acc1; },
 231                                 acc => acc[0] / acc[1]);
 232
 233                                 Assert.AreEqual(5.0, average, "#1");
 234                         });
 235                 }
 236
 237                 [Test]
 238                 public void TestSimpleExcept ()
 239                 {
 240                         ParallelTestHelper.Repeat (() => {
 241                                 int [] first = {0, 1, 2, 3, 4, 5};
 242                                 int [] second = {2, 4, 6};
 243                                 int [] result = {0, 1, 3, 5};
 244
 245                                 AreEquivalent (result, first.AsParallel ().Except (second.AsParallel ()), 1);
 246                         });
 247                 }
 248
 249                 [Test]
 250                 public void TestSimpleIntersect ()
 251                 {
 252                         ParallelTestHelper.Repeat (() => {
 253                                 int [] first = {0, 1, 2, 3, 4, 5};
 254                                 int [] second = {2, 4, 6};
 255                                 int [] result = {2, 4};
 256
 257                                 AreEquivalent (result, first.AsParallel ().Intersect (second.AsParallel ()), 1);
 258                         });
 259                 }
 260
 261                 [Test]
 262                 public void TestSimpleUnion ()
 263                 {
 264                         ParallelTestHelper.Repeat (() => {
 265                                 int [] first = {0, 1, 2, 3, 4, 5};
 266                                 int [] second = {2, 4, 6};
 267                                 int [] result = {0, 1, 2, 3, 4, 5, 6};
 268
 269                                 AreEquivalent (result, first.AsParallel ().Union (second.AsParallel ()), 1);
 270                         });
 271                 }
 272
 273                 class Foo {}
 274                 class Bar : Foo {}
 275
 276                 [Test]
 277                 public void TestCast ()
 278                 {
 279                         Bar a = new Bar ();
 280                         Bar b = new Bar ();
 281                         Bar c = new Bar ();
 282
 283                         Foo [] foos = new Foo [] {a, b, c};
 284                         Bar [] result = new Bar [] {a, b, c};
 285
 286                         AreEquivalent (result, foos.AsParallel ().Cast<Bar> (), 1);
 287                 }
 288
 289                 [Test]
 290                 public void TestSkip ()
 291                 {
 292                         int [] data = {0, 1, 2, 3, 4, 5};
 293                         int [] result = {3, 4, 5};
 294
 295                         AssertAreSame (result, data.AsParallel ().AsOrdered ().Skip (3).ToArray ());
 296                 }
 297
 298                 [Test]
 299                 public void TestSkipIterating ()
 300                 {
 301                         int [] data = {0, 1, 2, 3, 4, 5};
 302                         int [] result = {3, 4, 5};
 303
 304                         AssertAreSame (result, data.AsParallel ().AsOrdered ().Skip (3));
 305                 }
 306
 307                 [Test, Ignore]
 308                 public void TestSkipWhile ()
 309                 {
 310                         int [] data = {0, 1, 2, 3, 4, 5};
 311                         int [] result = {3, 4, 5};
 312
 313                         AssertAreSame (result, data.AsParallel ().AsOrdered ().SkipWhile (i => i < 3));
 314                 }
 315
 316                 [Test, Ignore]
 317                 public void TestTake ()
 318                 {
 319                         int [] data = {0, 1, 2, 3, 4, 5};
 320                         int [] result = {0, 1, 2};
 321
 322                         AssertAreSame (result, data.AsParallel ().AsOrdered ().Take (3));
 323                 }
 324
 325                 [Test, Ignore]
 326                 public void TestTakeWhile ()
 327                 {
 328                         int [] data = {0, 1, 2, 3, 4, 5};
 329                         int [] result = {0, 1, 2};
 330
 331                         AssertAreSame (result, data.AsParallel ().AsOrdered ().TakeWhile (i => i < 3));
 332                 }
 333
 334                 [Test, Ignore]
 335                 public void TestLast ()
 336                 {
 337                         int [] data = {1, 2, 3};
 338
 339                         Assert.AreEqual (3, data.AsParallel ().Last ());
 340                 }
 341
 342                 [Test, Ignore]
 343                 public void TestLastOrDefault ()
 344                 {
 345                         int [] data = {};
 346
 347                         Assert.AreEqual (default (int), data.AsParallel ().LastOrDefault ());
 348                 }
 349
 350                 [Test, Ignore]
 351                 public void TestFirst ()
 352                 {
 353                         int [] data = {1, 2, 3};
 354
 355                         Assert.AreEqual (1, data.AsParallel ().First ());
 356                 }
 357
 358                 [Test, Ignore]
 359                 public void TestFirstOrDefault ()
 360                 {
 361                         int [] data = {};
 362
 363                         Assert.AreEqual (default (int), data.AsParallel ().FirstOrDefault ());
 364                 }
 365
 366                 [Test]
 367                 public void TestReverse ()
 368                 {
 369                         int [] data = {0, 1, 2, 3, 4};
 370                         int [] result = {4, 3, 2, 1, 0};
 371
 372                         AssertAreSame (result, data.AsParallel ().AsOrdered ().Reverse ());
 373                         AssertAreSame (result, ParallelEnumerable.Range (0, 5).AsOrdered ().Reverse ());
 374                 }
 375
 376                 [Test]
 377                 public void TestOrderBy ()
 378                 {
 379                         ParallelTestHelper.Repeat (() => {
 380                                 int [] array = { 14, 53, 3, 9, 11, 14, 5, 32, 2 };
 381
 382                                 var q = array.AsParallel ().OrderBy ((i) => i);
 383                                 AssertIsOrdered (q, array.Length);
 384                         });
 385                 }
 386
 387                 class Baz {
 388                         string name;
 389                         int age;
 390
 391                         public string Name
 392                         {
 393                                 get {
 394                                         if (string.IsNullOrEmpty (name))
 395                                                 return Age.ToString ();
 396
 397                                         return name + " (" + Age + ")";
 398                                 }
 399                         }
 400
 401                         public int Age
 402                         {
 403                                 get { return age + 1; }
 404                         }
 405
 406                         public Baz (string name, int age)
 407                         {
 408                                 this.name = name;
 409                                 this.age = age;
 410                         }
 411
 412                         public override int GetHashCode ()
 413                         {
 414                                 return this.Age ^ this.Name.GetHashCode ();
 415                         }
 416
 417                         public override bool Equals (object obj)
 418                         {
 419                                 Baz b = obj as Baz;
 420                                 if (b == null)
 421                                         return false;
 422
 423                                 return b.Age == this.Age && b.Name == this.Name;
 424                         }
 425
 426                         public override string ToString ()
 427                         {
 428                                 return this.Name;
 429                         }
 430                 }
 431
 432                 static IEnumerable<Baz> CreateBazCollection ()
 433                 {
 434                         return new [] {
 435                                 new Baz ("jb", 25),
 436                                 new Baz ("ana", 20),
 437                                 new Baz ("reg", 28),
 438                                 new Baz ("ro", 25),
 439                                 new Baz ("jb", 7),
 440                         };
 441                 }
 442
 443                 [Test]
 444                 public void TestOrderByAgeAscendingTheByNameDescending ()
 445                 {
 446                         ParallelTestHelper.Repeat (() => {
 447                                 var q = from b in CreateBazCollection ().AsParallel()
 448                                                 orderby b.Age ascending, b.Name descending
 449                                                 select b;
 450                                 //var q = CreateBazCollection ().AsParallel ().OrderBy ((b) => b.Age).ThenByDescending ((b) => b.Name);
 451
 452                                 var expected = new [] {
 453                                         new Baz ("jb", 7),
 454                                         new Baz ("ana", 20),
 455                                         new Baz ("ro", 25),
 456                                         new Baz ("jb", 25),
 457                                         new Baz ("reg", 28),
 458                                 };
 459
 460                                 foreach (Baz b in q) {
 461                                         Console.Write(b.Name + ", " + b.Age + "; ");
 462                                 }
 463
 464                                 AssertAreSame (expected, q);
 465                         });
 466                 }
 467
 468                 class Data {
 469                         public int ID { get; set; }
 470                         public string Name { get; set; }
 471
 472                         public override string ToString ()
 473                         {
 474                                 return ID + " " + Name;
 475                         }
 476                 }
 477
 478                 IEnumerable<Data> CreateData ()
 479                 {
 480                         return new [] {
 481                                 new Data { ID = 10, Name = "bcd" },
 482                                 new Data { ID = 20, Name = "Abcd" },
 483                                 new Data { ID = 20, Name = "Ab" },
 484                                 new Data { ID = 10, Name = "Zyx" },
 485                         };
 486                 }
 487
 488                 [Test]
 489                 public void TestOrderByIdDescendingThenByNameAscending ()
 490                 {
 491                         ParallelTestHelper.Repeat (() => {
 492                                 var q = from d in CreateData ().AsParallel()
 493                                         orderby d.ID descending, d.Name ascending
 494                                                 select d;
 495
 496                                 var list = new List<Data> (q);
 497
 498                                 Assert.AreEqual ("Ab", list [0].Name);
 499                                 Assert.AreEqual ("Abcd", list [1].Name);
 500                                 Assert.AreEqual ("bcd", list [2].Name);
 501                                 Assert.AreEqual ("Zyx", list [3].Name);
 502                         });
 503                 }
 504
 505                 static void AssertIsOrdered (IEnumerable<int> e, int count)
 506                 {
 507                         int f = int.MinValue;
 508                         int c = 0;
 509
 510                         foreach (int i in e) {
 511                                 Assert.IsTrue (f <= i, string.Format ("{0} <= {1}", f, i));
 512                                 f = i;
 513                                 c++;
 514                         }
 515
 516                         Assert.AreEqual (count, c);
 517                 }
 518
 519
 520                 [TestAttribute, Ignore]
 521                 public void ElementAtTestCase()
 522                 {
 523                         ParallelTestHelper.Repeat (() => {
 524                                 Assert.AreEqual(1, baseEnumerable.ElementAt(0), "#1");
 525                                 Assert.AreEqual(51, baseEnumerable.ElementAt(50), "#2");
 526                                 Assert.AreEqual(489, baseEnumerable.ElementAt(488), "#3");
 527                         });
 528                 }
 529
 530                 [TestAttribute, Ignore]
 531                 public void TakeTestCase()
 532                 {
 533                         ParallelTestHelper.Repeat (() => {
 534                                 ParallelQuery<int> async = baseEnumerable.AsParallel().Take(2000);
 535                                 IEnumerable<int> sync = baseEnumerable.Take(2000);
 536
 537                                 AreEquivalent(sync, async, 1);
 538
 539                                 async = baseEnumerable.AsParallel().Take(100);
 540                                 sync = baseEnumerable.Take(100);
 541
 542                                 AreEquivalent(sync, async, 2);
 543                         }, 20);
 544                 }
 545
 546                 [Test]
 547                 public void SkipTestCase()
 548                 {
 549                         ParallelTestHelper.Repeat (() => {
 550                                 ParallelQuery<int> async = baseEnumerable.AsParallel().AsOrdered().Skip(2000);
 551                                 IEnumerable<int> sync = baseEnumerable.Skip(2000);
 552
 553                                 AreEquivalent(sync, async, 1);
 554
 555                                 async = baseEnumerable.AsParallel().Skip(100);
 556                                 sync = baseEnumerable.Skip(100);
 557
 558                                 Assert.AreEqual(sync.Count(), async.Count(), "#2");
 559                         }, 20);
 560                 }
 561
 562                 [Test]
 563                 public void ZipTestCase()
 564                 {
 565                         ParallelTestHelper.Repeat (() => {
 566                                 ParallelQuery<int> async1 = ParallelEnumerable.Range(0, 10000);
 567                                 ParallelQuery<int> async2 = ParallelEnumerable.Repeat(1, 10000).Zip(async1, (e1, e2) => e1 + e2);
 568
 569                                 int[] expected = Enumerable.Range (1, 10000).ToArray ();
 570                                 CollectionAssert.AreEquivalent(expected, Enumerable.ToArray (async2), "#1");
 571                         });
 572                 }
 573
 574                 [Test]
 575                 public void RangeTestCase ()
 576                 {
 577                         ParallelTestHelper.Repeat (() => {
 578                                 IEnumerable<int> sync  = Enumerable.Range(1, 1000);
 579                                 IEnumerable<int> async = ParallelEnumerable.Range(1, 1000);
 580
 581                                 AreEquivalent (sync, async, 1);
 582                         });
 583                 }
 584
 585                 [Test]
 586                 public void RepeatTestCase ()
 587                 {
 588                         ParallelTestHelper.Repeat (() => {
 589                                 IEnumerable<int> sync  = Enumerable.Repeat(1, 1000);
 590                                 IEnumerable<int> async = ParallelEnumerable.Repeat(1, 1000);
 591
 592                                 AreEquivalent (sync, async, 1);
 593                         });
 594                 }
 595
 596                 [Test]
 597                 public void TestSum ()
 598                 {
 599                         int [] data = {1, 2, 3, 4};
 600
 601                         Assert.AreEqual (10, data.AsParallel().Sum ());
 602                 }
 603
 604                 [Test]
 605                 public void SumOnEmpty ()
 606                 {
 607                         int [] data = {};
 608
 609                         Assert.AreEqual (0, data.AsParallel().Sum ());
 610                 }
 611
 612                 [Test]
 613                 public void TestMax ()
 614                 {
 615                         int [] data = {1, 3, 5, 2};
 616
 617                         Assert.AreEqual (5, data.AsParallel().Max ());
 618                 }
 619
 620                 [Test]
 621                 public void TestMin ()
 622                 {
 623                         int [] data = {3, 5, 2, 6, 1, 7};
 624
 625                         Assert.AreEqual (1, data.AsParallel().Min ());
 626                 }
 627
 628                 [Test]
 629                 public void TestToListOrdered ()
 630                 {
 631                         int [] data = { 2, 3, 5 };
 632
 633                         var list = data.AsParallel().AsOrdered().ToList ();
 634
 635                         AssertAreSame (data, list);
 636                         AssertIsOrdered (list, data.Length);
 637
 638                         Assert.AreEqual (typeof (List<int>), list.GetType ());
 639                 }
 640
 641                 [Test]
 642                 public void TestToArrayOrdered ()
 643                 {
 644                         ICollection<int> coll = new List<int> ();
 645                         coll.Add (0);
 646                         coll.Add (1);
 647                         coll.Add (2);
 648
 649                         int [] result = {0, 1, 2};
 650
 651                         var array = coll.AsParallel().AsOrdered().ToArray ();
 652
 653                         AssertAreSame (result, array);
 654                         AssertIsOrdered (array, result.Length);
 655
 656                         Assert.AreEqual (typeof (int []), array.GetType ());
 657                 }
 658
 659                 [Test]
 660                 public void TestToList ()
 661                 {
 662                         int [] data = {3, 5, 2};
 663
 664                         var list = data.AsParallel().ToList ();
 665
 666                         CollectionAssert.AreEquivalent (data, list);
 667
 668                         Assert.AreEqual (typeof (List<int>), list.GetType ());
 669                 }
 670
 671                 [Test]
 672                 public void TestToArray ()
 673                 {
 674                         ICollection<int> coll = new List<int> ();
 675                         coll.Add (0);
 676                         coll.Add (1);
 677                         coll.Add (2);
 678
 679                         int [] result = {0, 1, 2};
 680
 681                         var array = coll.AsParallel().ToArray ();
 682
 683                         CollectionAssert.AreEquivalent (result, array);
 684
 685                         Assert.AreEqual (typeof (int []), array.GetType ());
 686                 }
 687
 688
 689                 [Test]
 690                 public void TestAverageOnInt32 ()
 691                 {
 692                         Assert.AreEqual (23.25, (new int [] { 24, 7, 28, 34 }).Average ());
 693                 }
 694
 695                 [Test]
 696                 public void TestAverageOnInt64 ()
 697                 {
 698                         Assert.AreEqual (23.25, (new long [] { 24, 7, 28, 34 }).Average ());
 699                 }
 700
 701
 702                 [Test]
 703                 public void AnyArgumentNullTest ()
 704                 {
 705                         string [] data = { "2", "1", "5", "3", "4" };
 706
 707
 708                         // Any<TSource> ()
 709                         AssertException<ArgumentNullException> (delegate () { ((IEnumerable<string>) null).AsParallel ().Any (); });
 710
 711                         // Any<TSource> (Func<TSource, bool>)
 712                         AssertException<ArgumentNullException> (delegate () { ((IEnumerable<string>) null).AsParallel ().Any (x => true); });
 713                         AssertException<ArgumentNullException> (delegate () { data.AsParallel ().Any ((Func<string, bool>) null); });
 714                 }
 715
 716                 [Test]
 717                 public void AnyTest ()
 718                 {
 719                         int [] data = { 5, 2, 3, 1, 6 };
 720                         int [] empty = { };
 721
 722
 723                         // Any<TSource> ()
 724                         Assert.IsTrue (data.AsParallel ().Any ());
 725                         Assert.IsFalse (empty.AsParallel ().Any ());
 726
 727                         // Any<TSource> (Func<TSource, bool>)
 728                         Assert.IsTrue (data.AsParallel ().Any (x => x == 5));
 729                         Assert.IsFalse (data.AsParallel ().Any (x => x == 9));
 730                         Assert.IsFalse (empty.AsParallel ().Any (x => true));
 731                 }
 732
 733
 734                 [Test]
 735                 public void AllArgumentNullTest ()
 736                 {
 737                         string [] data = { "2", "1", "5", "3", "4" };
 738
 739                         AssertException<ArgumentNullException> (delegate () { ((IEnumerable<string>) null).AsParallel ().All (x => true); });
 740                         AssertException<ArgumentNullException> (delegate () { data.AsParallel ().All ((Func<string, bool>) null); });
 741                 }
 742
 743                 [Test]
 744                 public void AllTest ()
 745                 {
 746                         int [] data = { 5, 2, 3, 1, 6 };
 747                         int [] empty = { };
 748
 749                         Assert.IsTrue (data.AsParallel ().All (x => true));
 750                         Assert.IsFalse (data.AsParallel ().All (x => x != 1));
 751                         Assert.IsTrue (empty.AsParallel ().All (x => false));
 752                 }
 753         }
 754 }
 755
 756 #endif