Best Coyote code snippet using Microsoft.Coyote.BugFinding.Tests.BoundedBuffer
ExtremeProgrammingChallenge14Tests.cs
...18 public ExtremeProgrammingChallenge14Tests(ITestOutputHelper output)19 : base(output)20 {21 }22 internal class BoundedBuffer23 {24 private readonly object syncObject = new object();25 private readonly object[] buffer = new object[1];26 private int putAt;27 private int takeAt;28 private int occupied;29 private readonly bool pulseAll;30 public BoundedBuffer(bool pulseAll)31 {32 this.pulseAll = pulseAll;33 }34 public void Put(object x)35 {36 lock (this.syncObject)37 {38 while (this.occupied == this.buffer.Length)39 {40 Monitor.Wait(this.syncObject);41 }42 ++this.occupied;43 this.putAt %= this.buffer.Length;44 this.buffer[this.putAt++] = x;45 if (this.pulseAll)46 {47 Monitor.PulseAll(this.syncObject);48 }49 else50 {51 Monitor.Pulse(this.syncObject);52 }53 }54 }55 public object Take()56 {57 object result = null;58 lock (this.syncObject)59 {60 while (this.occupied is 0)61 {62 Monitor.Wait(this.syncObject);63 }64 --this.occupied;65 this.takeAt %= this.buffer.Length;66 result = this.buffer[this.takeAt++];67 if (this.pulseAll)68 {69 Monitor.PulseAll(this.syncObject);70 }71 else72 {73 Monitor.Pulse(this.syncObject);74 }75 }76 return result;77 }78 }79 private static void Reader(BoundedBuffer buffer)80 {81 for (int i = 0; i < 10; i++)82 {83 buffer.Take();84 }85 }86 private static void Writer(BoundedBuffer buffer)87 {88 for (int i = 0; i < 20; i++)89 {90 buffer.Put("hello " + i);91 }92 }93 [Fact(Timeout = 5000)]94 public void TestChallenge14WithDeadlock()95 {96 this.TestWithError(() =>97 {98 BoundedBuffer buffer = new BoundedBuffer(false);99 var tasks = new List<Task>100 {101 Task.Run(() => Reader(buffer)),102 Task.Run(() => Reader(buffer)),103 Task.Run(() => Writer(buffer))104 };105 Task.WaitAll(tasks.ToArray());106 },107 configuration: this.GetConfiguration().WithTestingIterations(100),108 errorChecker: (e) =>109 {110 Assert.StartsWith("Deadlock detected.", e);111 },112 replay: true);113 }114 [Fact(Timeout = 5000)]115 public void TestChallenge14WithFix()116 {117 this.Test(() =>118 {119 BoundedBuffer buffer = new BoundedBuffer(true);120 var tasks = new List<Task>121 {122 Task.Run(() => Reader(buffer)),123 Task.Run(() => Reader(buffer)),124 Task.Run(() => Writer(buffer))125 };126 Task.WaitAll(tasks.ToArray());127 },128 configuration: this.GetConfiguration().WithTestingIterations(100));129 }130 }131}...
BoundedBuffer
Using AI Code Generation
1using Microsoft.Coyote.BugFinding.Tests;2using System;3using System.Threading.Tasks;4{5 {6 static void Main(string[] args)7 {8 BoundedBuffer buffer = new BoundedBuffer(5);9 Task.Run(() => Producer(buffer));10 Task.Run(() => Consumer(buffer));11 Console.ReadLine();12 }13 static void Producer(BoundedBuffer buffer)14 {15 int value = 0;16 while (true)17 {18 buffer.Put(value);19 Console.WriteLine($"Produced {value++}");20 }21 }22 static void Consumer(BoundedBuffer buffer)23 {24 while (true)25 {26 int value = (int)buffer.Get();27 Console.WriteLine($"Consumed {value}");28 }29 }30 }31}32Assert failure: (object)System.Object is not null
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