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] ParallelForTestCase()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))] ParallelForExceptionTestCase()61 public void ParallelForExceptionTestCase () 62 { 63 Parallel.For(1, 100, delegate (int i) { throw new Exception("foo"); }); 64 } 65 66 [Test] ParallelForSmallRangeTest()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] ParallelForNoOperationTest()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] ParallelForNestedTest()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] ParallelForEachTestCase()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] ParallelForEachTestCaseWithIndex()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] ParallerForEach_UserType()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))] ParallelForEachExceptionTestCase()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] BasicInvokeTest()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] InvokeWithOneNullActionTest()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] OneActionInvokeTest()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))] InvokeWithNullActions()198 public void InvokeWithNullActions () 199 { 200 Parallel.Invoke ((Action[])null); 201 } 202 203 [Test, ExpectedException (typeof (ArgumentNullException))] InvokeWithNullOptions()204 public void InvokeWithNullOptions () 205 { 206 Parallel.Invoke ((ParallelOptions)null, () => Thread.Sleep (100)); 207 } 208 209 [Test] InvokeWithExceptions()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 } 226