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 #if NET_4_0
  27
  28 using System;
  29 using System.Linq;
  30 using System.Threading;
  31 using System.Threading.Tasks;
  32 using System.IO;
  33 using System.Collections.Generic;
  34 using System.Collections.Concurrent;
  35
  36 using NUnit;
  37 using NUnit.Framework;
  38 using NUnit.Framework.Constraints;
  39
  40 namespace MonoTests.System.Threading.Tasks
  41 {
  42         [TestFixture]
  43         public class ParallelTests
  44         {
  45                 [Test]
  46                 public void ParallelForTestCase ()
  47                 {
  48                         int[] expected = Enumerable.Range (1, 1000).Select ((e) => e * 2).ToArray ();
  49
  50                         ParallelTestHelper.Repeat (() => {
  51                                 int[] actual = Enumerable.Range (1, 1000).ToArray ();
  52                                 SpinWait sw = new SpinWait ();
  53
  54                                 Parallel.For (0, actual.Length, (i) => { actual[i] *= 2; sw.SpinOnce (); });
  55
  56                                 Assert.That (actual, new CollectionEquivalentConstraint (expected), "#1, same");
  57                                 Assert.That (actual, new EqualConstraint (expected), "#2, in order");
  58                         });
  59                 }
  60
  61                 [Test, ExpectedException (typeof (AggregateException))]
  62                 public void ParallelForExceptionTestCase ()
  63                 {
  64                         Parallel.For(1, 100, delegate (int i) { throw new Exception("foo"); });
  65                 }
  66
  67                 [Test]
  68                 public void ParallelForSmallRangeTest ()
  69                 {
  70                         ParallelTestHelper.Repeat (() => {
  71                                 int test = -1;
  72                                 Parallel.For (0, 1, (i) => test = i);
  73
  74                                 Assert.AreEqual (0, test, "#1");
  75                         });
  76                 }
  77
  78                 [Test]
  79                 public void ParallelForNoOperationTest ()
  80                 {
  81                         bool launched = false;
  82                         Parallel.For (4, 1, (i) => launched = true);
  83                         Assert.IsFalse (launched, "#1");
  84                 }
  85
  86                 [Test]
  87                 public void ParallelForNestedTest ()
  88                 {
  89                         bool[] launched = new bool[6 * 20 * 10];
  90                         Parallel.For (0, 6, delegate (int i) {
  91                                 Parallel.For (0, 20, delegate (int j) {
  92                                         Parallel.For (0, 10, delegate (int k) {
  93                                                         launched[i * 20 * 10 + j * 10 + k] = true;
  94                                         });
  95                                 });
  96                     });
  97
  98                         Assert.IsTrue (launched.All ((_) => _), "All true");
  99                 }
 100
 101                 [Test]
 102                 public void ParallelForEachTestCase ()
 103                 {
 104                         ParallelTestHelper.Repeat (() => {
 105                                 IEnumerable<int> e = Enumerable.Repeat(1, 500);
 106                                 ConcurrentQueue<int> queue = new ConcurrentQueue<int> ();
 107                                 SpinWait sw = new SpinWait ();
 108                                 int count = 0;
 109
 110                                 Parallel.ForEach (e, (element) => { Interlocked.Increment (ref count); queue.Enqueue (element); sw.SpinOnce (); });
 111
 112                                 Assert.AreEqual (500, count, "#1");
 113
 114                                 Assert.That (queue, new CollectionEquivalentConstraint (e), "#2");
 115                         });
 116                 }
 117
 118                 class ValueAndSquare
 119                 {
 120                         public float Value { get; set; }
 121                         public float Square { get; set; }
 122                 }
 123
 124                 [Test]
 125                 public void ParallerForEach_UserType ()
 126                 {
 127                         var values = new[] {
 128                                 new ValueAndSquare() { Value = 1f },
 129                                 new ValueAndSquare() { Value = 2f },
 130                                 new ValueAndSquare() { Value = 3f },
 131                                 new ValueAndSquare() { Value = 4f },
 132                                 new ValueAndSquare() { Value = 5f },
 133                                 new ValueAndSquare() { Value = 6f },
 134                                 new ValueAndSquare() { Value = 7f },
 135                                 new ValueAndSquare() { Value = 8f },
 136                                 new ValueAndSquare() { Value = 9f },
 137                                 new ValueAndSquare() { Value = 10f }
 138                         };
 139
 140                         Parallel.ForEach (Partitioner.Create (values), l => l.Square = l.Value * l.Value);
 141
 142                         foreach (var item in values) {
 143                                 Assert.AreEqual (item.Square, item.Value * item.Value);
 144                         }
 145                 }
 146
 147                 [Test, ExpectedException (typeof (AggregateException))]
 148                 public void ParallelForEachExceptionTestCase ()
 149                 {
 150                         IEnumerable<int> e = Enumerable.Repeat (1, 10);
 151                         Parallel.ForEach (e, delegate (int element) { throw new Exception ("foo"); });
 152                 }
 153
 154                 [Test]
 155                 public void BasicInvokeTest ()
 156                 {
 157                         int val1 = 0, val2 = 0;
 158
 159                         Parallel.Invoke (() => Interlocked.Increment (ref val1), () => Interlocked.Increment (ref val2));
 160                         Assert.AreEqual (1, val1, "#1");
 161                         Assert.AreEqual (1, val2, "#2");
 162                 }
 163
 164                 [Test]
 165                 public void InvokeWithOneNullActionTest ()
 166                 {
 167                         int val1 = 0, val2 = 0;
 168
 169                         try {
 170                                 Parallel.Invoke (() => Interlocked.Increment (ref val1), null, () => Interlocked.Increment (ref val2));
 171                         } catch (ArgumentException ex) {
 172                                 Assert.AreEqual (0, val1, "#1");
 173                                 Assert.AreEqual (0, val2, "#2");
 174                                 return;
 175                         }
 176                         Assert.Fail ("Shouldn't be there");
 177                 }
 178
 179                 [Test]
 180                 public void OneActionInvokeTest ()
 181                 {
 182                         int val = 0;
 183
 184                         Parallel.Invoke (() => Interlocked.Increment (ref val));
 185                         Assert.AreEqual (1, val, "#1");
 186                 }
 187
 188                 [Test, ExpectedException (typeof (ArgumentNullException))]
 189                 public void InvokeWithNullActions ()
 190                 {
 191                         Parallel.Invoke ((Action[])null);
 192                 }
 193
 194                 [Test, ExpectedException (typeof (ArgumentNullException))]
 195                 public void InvokeWithNullOptions ()
 196                 {
 197                         Parallel.Invoke ((ParallelOptions)null, () => Thread.Sleep (100));
 198                 }
 199
 200                 [Test]
 201                 public void InvokeWithExceptions ()
 202                 {
 203                         try {
 204                                 Parallel.Invoke (() => { throw new ApplicationException ("foo"); }, () => { throw new IOException ("foo"); });
 205                         } catch (AggregateException ex) {
 206                                 Assert.AreEqual (2, ex.InnerExceptions.Count);
 207                                 foreach (var e in ex.InnerExceptions)
 208                                         Console.WriteLine (e.GetType ());
 209                                 Assert.IsTrue (ex.InnerExceptions.Any (e => e.GetType () == typeof (ApplicationException)));
 210                                 Assert.IsTrue (ex.InnerExceptions.Any (e => e.GetType () == typeof (IOException)));
 211                                 return;
 212                         }
 213                         Assert.Fail ("Shouldn't go there");
 214                 }
 215         }
 216 }
 217 #endif