mcs/class/corlib/Test/System.Threading.Tasks/ParallelTests.cs

   1 //
   2 // ParallelTests.cs
   3 //
   4 // Copyright (c) 2008 Jérémie "Garuma" Laval
   5 //
   6 // Permission is hereby granted, free of charge, to any person obtaining a copy
   7 // of this software and associated documentation files (the "Software"), to deal
   8 // in the Software without restriction, including without limitation the rights
   9 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10 // copies of the Software, and to permit persons to whom the Software is
  11 // furnished to do so, subject to the following conditions:
  12 //
  13 // The above copyright notice and this permission notice shall be included in
  14 // all copies or substantial portions of the Software.
  15 //
  16 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  19 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22 // THE SOFTWARE.
  23 //
  24 //
  25
  26
  27 using System;
  28 using System.Linq;
  29 using System.Threading;
  30 using System.Threading.Tasks;
  31 using System.IO;
  32 using System.Collections.Generic;
  33 using System.Collections.Concurrent;
  34
  35 using NUnit;
  36 using NUnit.Framework;
  37 using NUnit.Framework.Constraints;
  38
  39 namespace MonoTests.System.Threading.Tasks
  40 {
  41         [TestFixture]
  42         public class ParallelTests
  43         {
  44                 [Test]
  45                 public void ParallelForTestCase ()
  46                 {
  47                         int[] expected = Enumerable.Range (1, 1000).Select ((e) => e * 2).ToArray ();
  48
  49                         ParallelTestHelper.Repeat (() => {
  50                                 int[] actual = Enumerable.Range (1, 1000).ToArray ();
  51                                 SpinWait sw = new SpinWait ();
  52
  53                                 Parallel.For (0, actual.Length, (i) => { actual[i] *= 2; sw.SpinOnce (); });
  54
  55                                 Assert.That (actual, new CollectionEquivalentConstraint (expected), "#1, same");
  56                                 Assert.That (actual, new EqualConstraint (expected), "#2, in order");
  57                         });
  58                 }
  59
  60                 [Test, ExpectedException (typeof (AggregateException))]
  61                 public void ParallelForExceptionTestCase ()
  62                 {
  63                         Parallel.For(1, 100, delegate (int i) { throw new Exception("foo"); });
  64                 }
  65
  66                 [Test]
  67                 public void ParallelForSmallRangeTest ()
  68                 {
  69                         ParallelTestHelper.Repeat (() => {
  70                                 int test = -1;
  71                                 Parallel.For (0, 1, (i) => test = i);
  72
  73                                 Assert.AreEqual (0, test, "#1");
  74                         });
  75                 }
  76
  77                 [Test]
  78                 public void ParallelForNoOperationTest ()
  79                 {
  80                         bool launched = false;
  81                         Parallel.For (4, 1, (i) => launched = true);
  82                         Assert.IsFalse (launched, "#1");
  83                 }
  84
  85                 [Test]
  86                 public void ParallelForNestedTest ()
  87                 {
  88                         bool[] launched = new bool[6 * 20 * 10];
  89                         Parallel.For (0, 6, delegate (int i) {
  90                                 Parallel.For (0, 20, delegate (int j) {
  91                                         Parallel.For (0, 10, delegate (int k) {
  92                                                         launched[i * 20 * 10 + j * 10 + k] = true;
  93                                         });
  94                                 });
  95                     });
  96
  97                         Assert.IsTrue (launched.All ((_) => _), "All true");
  98                 }
  99
 100                 [Test]
 101                 public void ParallelForEachTestCase ()
 102                 {
 103                         ParallelTestHelper.Repeat (() => {
 104                                 IEnumerable<int> e = Enumerable.Repeat(1, 500);
 105                                 ConcurrentQueue<int> queue = new ConcurrentQueue<int> ();
 106                                 SpinWait sw = new SpinWait ();
 107                                 int count = 0;
 108
 109                                 Parallel.ForEach (e, (element) => { Interlocked.Increment (ref count); queue.Enqueue (element); sw.SpinOnce (); });
 110
 111                                 Assert.AreEqual (500, count, "#1");
 112
 113                                 Assert.That (queue, new CollectionEquivalentConstraint (e), "#2");
 114                         });
 115                 }
 116
 117                 [Test]
 118                 public void ParallelForEachTestCaseWithIndex ()
 119                 {
 120                         var list = new List<int> { 0, 1, 2, 3, 4 };
 121
 122                         Parallel.ForEach (list, (l, s, i) => {
 123                                 Assert.AreEqual (l, i, "#1");
 124                         });
 125                 }
 126
 127                 class ValueAndSquare
 128                 {
 129                         public float Value { get; set; }
 130                         public float Square { get; set; }
 131                 }
 132
 133                 [Test]
 134                 public void ParallerForEach_UserType ()
 135                 {
 136                         var values = new[] {
 137                                 new ValueAndSquare() { Value = 1f },
 138                                 new ValueAndSquare() { Value = 2f },
 139                                 new ValueAndSquare() { Value = 3f },
 140                                 new ValueAndSquare() { Value = 4f },
 141                                 new ValueAndSquare() { Value = 5f },
 142                                 new ValueAndSquare() { Value = 6f },
 143                                 new ValueAndSquare() { Value = 7f },
 144                                 new ValueAndSquare() { Value = 8f },
 145                                 new ValueAndSquare() { Value = 9f },
 146                                 new ValueAndSquare() { Value = 10f }
 147                         };
 148
 149                         Parallel.ForEach (Partitioner.Create (values), l => l.Square = l.Value * l.Value);
 150
 151                         foreach (var item in values) {
 152                                 Assert.AreEqual (item.Square, item.Value * item.Value);
 153                         }
 154                 }
 155
 156                 [Test, ExpectedException (typeof (AggregateException))]
 157                 public void ParallelForEachExceptionTestCase ()
 158                 {
 159                         IEnumerable<int> e = Enumerable.Repeat (1, 10);
 160                         Parallel.ForEach (e, delegate (int element) { throw new Exception ("foo"); });
 161                 }
 162
 163                 [Test]
 164                 public void BasicInvokeTest ()
 165                 {
 166                         int val1 = 0, val2 = 0;
 167
 168                         Parallel.Invoke (() => Interlocked.Increment (ref val1), () => Interlocked.Increment (ref val2));
 169                         Assert.AreEqual (1, val1, "#1");
 170                         Assert.AreEqual (1, val2, "#2");
 171                 }
 172
 173                 [Test]
 174                 public void InvokeWithOneNullActionTest ()
 175                 {
 176                         int val1 = 0, val2 = 0;
 177
 178                         try {
 179                                 Parallel.Invoke (() => Interlocked.Increment (ref val1), null, () => Interlocked.Increment (ref val2));
 180                         } catch (ArgumentException ex) {
 181                                 Assert.AreEqual (0, val1, "#1");
 182                                 Assert.AreEqual (0, val2, "#2");
 183                                 return;
 184                         }
 185                         Assert.Fail ("Shouldn't be there");
 186                 }
 187
 188                 [Test]
 189                 public void OneActionInvokeTest ()
 190                 {
 191                         int val = 0;
 192
 193                         Parallel.Invoke (() => Interlocked.Increment (ref val));
 194                         Assert.AreEqual (1, val, "#1");
 195                 }
 196
 197                 [Test, ExpectedException (typeof (ArgumentNullException))]
 198                 public void InvokeWithNullActions ()
 199                 {
 200                         Parallel.Invoke ((Action[])null);
 201                 }
 202
 203                 [Test, ExpectedException (typeof (ArgumentNullException))]
 204                 public void InvokeWithNullOptions ()
 205                 {
 206                         Parallel.Invoke ((ParallelOptions)null, () => Thread.Sleep (100));
 207                 }
 208
 209                 [Test]
 210                 public void InvokeWithExceptions ()
 211                 {
 212                         try {
 213                                 Parallel.Invoke (() => { throw new ApplicationException ("foo"); }, () => { throw new IOException ("foo"); });
 214                         } catch (AggregateException ex) {
 215                                 Assert.AreEqual (2, ex.InnerExceptions.Count);
 216                                 foreach (var e in ex.InnerExceptions)
 217                                         Console.WriteLine (e.GetType ());
 218                                 Assert.IsTrue (ex.InnerExceptions.Any (e => e.GetType () == typeof (ApplicationException)));
 219                                 Assert.IsTrue (ex.InnerExceptions.Any (e => e.GetType () == typeof (IOException)));
 220                                 return;
 221                         }
 222                         Assert.Fail ("Shouldn't go there");
 223                 }
 224         }
 225 }