Unlock 30% off on Manual Testing Annual Plans this Holiday Season.

Copied to Clipboard!

Automation Advisor
Coyote
Microsoft.Coyote.Rewriting.Types.Threading.Tasks
TaskCompletionSource

How to use TaskCompletionSource class of Microsoft.Coyote.Rewriting.Types.Threading.Tasks package

Best Coyote code snippet using Microsoft.Coyote.Rewriting.Types.Threading.Tasks.TaskCompletionSource

TypeRewritingPass.cs

Source:TypeRewritingPass.cs

...61            this.KnownTypes[NameCache.GenericTask] = typeof(Types.Threading.Tasks.Task<>);62            this.KnownTypes[NameCache.ValueTask] = typeof(Types.Threading.Tasks.ValueTask);63            this.KnownTypes[NameCache.GenericValueTask] = typeof(Types.Threading.Tasks.ValueTask<>);64#if NET65            this.KnownTypes[NameCache.TaskCompletionSource] = typeof(Types.Threading.Tasks.TaskCompletionSource);66#endif67            this.KnownTypes[NameCache.GenericTaskCompletionSource] = typeof(Types.Threading.Tasks.TaskCompletionSource<>);68            this.KnownTypes[NameCache.TaskExtensions] = typeof(Types.TaskExtensions);69            this.KnownTypes[NameCache.TaskFactory] = typeof(Types.Threading.Tasks.TaskFactory);70            this.KnownTypes[NameCache.GenericTaskFactory] = typeof(Types.Threading.Tasks.TaskFactory<>);71            this.KnownTypes[NameCache.TaskParallel] = typeof(Types.Threading.Tasks.Parallel);72            // Populate the map with the known synchronization types.73            this.KnownTypes[NameCache.Monitor] = typeof(Types.Threading.Monitor);74            this.KnownTypes[NameCache.SemaphoreSlim] = typeof(Types.Threading.SemaphoreSlim);75#if NET || NETCOREAPP3_176            // Populate the map with the known HTTP and web-related types.77            this.KnownTypes[NameCache.HttpClient] = typeof(Types.Net.Http.HttpClient);78            this.KnownTypes[NameCache.HttpRequestMessage] = typeof(Types.Net.Http.HttpRequestMessage);79#endif80            if (options.IsRewritingConcurrentCollections)81            {...

TaskCompletionSource.cs

Source:TaskCompletionSource.cs

...5using Microsoft.Coyote.Runtime;6using SystemCancellationToken = System.Threading.CancellationToken;7#if NET8using SystemTask = System.Threading.Tasks.Task;9using SystemTaskCompletionSource = System.Threading.Tasks.TaskCompletionSource;10#endif11using SystemTasks = System.Threading.Tasks;12namespace Microsoft.Coyote.Rewriting.Types.Threading.Tasks13{14#if NET15    /// <summary>16    /// Represents the producer side of a controlled task unbound to a delegate, providing17    /// access to the consumer side through the task property of the task completion source.18    /// </summary>19    /// <remarks>This type is intended for compiler use rather than use directly in code.</remarks>20    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]21    public static class TaskCompletionSource22    {23#pragma warning disable CA1000 // Do not declare static members on generic types24        /// <summary>25        /// Gets the task created by this task completion source.26        /// </summary>27#pragma warning disable CA1707 // Remove the underscores from member name28#pragma warning disable SA1300 // Element should begin with an uppercase letter29#pragma warning disable IDE1006 // Naming Styles30        public static SystemTask get_Task(SystemTaskCompletionSource tcs)31        {32            var task = tcs.Task;33            CoyoteRuntime.Current?.RegisterKnownControlledTask(task);34            return task;35        }36#pragma warning restore CA1707 // Remove the underscores from member name37#pragma warning restore SA1300 // Element should begin with an uppercase letter38#pragma warning restore IDE1006 // Naming Styles39        /// <summary>40        /// Transitions the underlying task into the <see cref="SystemTasks.TaskStatus.RanToCompletion"/> state.41        /// </summary>42        public static void SetResult(SystemTaskCompletionSource tcs) => tcs.SetResult();43        /// <summary>44        /// Transitions the underlying task into the <see cref="SystemTasks.TaskStatus.Faulted"/> state45        /// and binds a collection of exception objects to it.46        /// </summary>47        public static void SetException(SystemTaskCompletionSource tcs,48            IEnumerable<Exception> exceptions) =>49            tcs.SetException(exceptions);50        /// <summary>51        /// Transitions the underlying task into the <see cref="SystemTasks.TaskStatus.Faulted"/> state52        /// and binds it to a specified exception.53        /// </summary>54        public static void SetException(SystemTaskCompletionSource tcs, Exception exception) =>55            tcs.SetException(exception);56        /// <summary>57        /// Transitions the underlying task into the <see cref="SystemTasks.TaskStatus.Canceled"/> state.58        /// </summary>59        public static void SetCanceled(SystemTaskCompletionSource tcs) => tcs.SetCanceled();60        /// <summary>61        /// Attempts to transition the underlying task into the <see cref="SystemTasks.TaskStatus.RanToCompletion"/> state.62        /// </summary>63        public static bool TrySetResult(SystemTaskCompletionSource tcs) =>64            tcs.TrySetResult();65        /// <summary>66        /// Attempts to transition the underlying task into the <see cref="SystemTasks.TaskStatus.Faulted"/> state67        /// and binds it to a specified exception.68        /// </summary>69        public static bool TrySetException(SystemTaskCompletionSource tcs, Exception exception) =>70            tcs.TrySetException(exception);71        /// <summary>72        /// Attempts to transition the underlying task into the <see cref="SystemTasks.TaskStatus.Faulted"/> state73        /// and binds a collection of exception objects to it.74        /// </summary>75        public static bool TrySetException(SystemTaskCompletionSource tcs, IEnumerable<Exception> exceptions) =>76            tcs.TrySetException(exceptions);77        /// <summary>78        /// Attempts to transition the underlying task into the <see cref="SystemTasks.TaskStatus.Canceled"/> state.79        /// </summary>80        public static bool TrySetCanceled(SystemTaskCompletionSource tcs) => tcs.TrySetCanceled();81        /// <summary>82        /// Attempts to transition the underlying task into the <see cref="SystemTasks.TaskStatus.Canceled"/> state83        /// and enables a cancellation token to be stored in the canceled task.84        /// </summary>85        public static bool TrySetCanceled(SystemTaskCompletionSource tcs, SystemCancellationToken cancellationToken) =>86            tcs.TrySetCanceled(cancellationToken);87#pragma warning restore CA1000 // Do not declare static members on generic types88    }89#endif90    /// <summary>91    /// Represents the producer side of a controlled task unbound to a delegate, providing92    /// access to the consumer side through the task property of the task completion source.93    /// </summary>94    /// <typeparam name="TResult">The type of the result value.</typeparam>95    /// <remarks>This type is intended for compiler use rather than use directly in code.</remarks>96    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]97    public static class TaskCompletionSource<TResult>98    {99#pragma warning disable CA1000 // Do not declare static members on generic types100        /// <summary>101        /// Gets the task created by this task completion source.102        /// </summary>103#pragma warning disable CA1707 // Remove the underscores from member name104#pragma warning disable SA1300 // Element should begin with an uppercase letter105#pragma warning disable IDE1006 // Naming Styles106        public static SystemTasks.Task<TResult> get_Task(SystemTasks.TaskCompletionSource<TResult> tcs)107        {108            var task = tcs.Task;109            CoyoteRuntime.Current?.RegisterKnownControlledTask(task);110            return task;111        }112#pragma warning restore CA1707 // Remove the underscores from member name113#pragma warning restore SA1300 // Element should begin with an uppercase letter114#pragma warning restore IDE1006 // Naming Styles115        /// <summary>116        /// Transitions the underlying task into the <see cref="SystemTasks.TaskStatus.RanToCompletion"/> state.117        /// </summary>118        public static void SetResult(SystemTasks.TaskCompletionSource<TResult> tcs, TResult result) => tcs.SetResult(result);119        /// <summary>120        /// Transitions the underlying task into the <see cref="SystemTasks.TaskStatus.Faulted"/> state121        /// and binds a collection of exception objects to it.122        /// </summary>123        public static void SetException(SystemTasks.TaskCompletionSource<TResult> tcs,124            IEnumerable<Exception> exceptions) =>125            tcs.SetException(exceptions);126        /// <summary>127        /// Transitions the underlying task into the <see cref="SystemTasks.TaskStatus.Faulted"/> state128        /// and binds it to a specified exception.129        /// </summary>130        public static void SetException(SystemTasks.TaskCompletionSource<TResult> tcs, Exception exception) =>131            tcs.SetException(exception);132        /// <summary>133        /// Transitions the underlying task into the <see cref="SystemTasks.TaskStatus.Canceled"/> state.134        /// </summary>135        public static void SetCanceled(SystemTasks.TaskCompletionSource<TResult> tcs) => tcs.SetCanceled();136        /// <summary>137        /// Attempts to transition the underlying task into the <see cref="SystemTasks.TaskStatus.RanToCompletion"/> state.138        /// </summary>139        public static bool TrySetResult(SystemTasks.TaskCompletionSource<TResult> tcs, TResult result) =>140            tcs.TrySetResult(result);141        /// <summary>142        /// Attempts to transition the underlying task into the <see cref="SystemTasks.TaskStatus.Faulted"/> state143        /// and binds it to a specified exception.144        /// </summary>145        public static bool TrySetException(SystemTasks.TaskCompletionSource<TResult> tcs, Exception exception) =>146            tcs.TrySetException(exception);147        /// <summary>148        /// Attempts to transition the underlying task into the <see cref="SystemTasks.TaskStatus.Faulted"/> state149        /// and binds a collection of exception objects to it.150        /// </summary>151        public static bool TrySetException(SystemTasks.TaskCompletionSource<TResult> tcs, IEnumerable<Exception> exceptions) =>152            tcs.TrySetException(exceptions);153        /// <summary>154        /// Attempts to transition the underlying task into the <see cref="SystemTasks.TaskStatus.Canceled"/> state.155        /// </summary>156        public static bool TrySetCanceled(SystemTasks.TaskCompletionSource<TResult> tcs) => tcs.TrySetCanceled();157        /// <summary>158        /// Attempts to transition the underlying task into the <see cref="SystemTasks.TaskStatus.Canceled"/> state159        /// and enables a cancellation token to be stored in the canceled task.160        /// </summary>161        public static bool TrySetCanceled(SystemTasks.TaskCompletionSource<TResult> tcs,162            SystemCancellationToken cancellationToken) =>163            tcs.TrySetCanceled(cancellationToken);164#pragma warning restore CA1000 // Do not declare static members on generic types165    }166}...

PausedOperationAwaitableTests.cs

Source:PausedOperationAwaitableTests.cs

...18        public void TestPausedOperationAwaitablePersistsOperation()19        {20            this.RunSystematicTest(() =>21            {22                var tcs = new TaskCompletionSource<bool>();23                var task = CoyoteTypes.Threading.Tasks.Task.Run(async () =>24                {25                    var op = CoyoteRuntime.Current.GetExecutingOperation();26                    await CoyoteRuntime.Current.PauseOperationUntilAsync(() => tcs.Task.IsCompleted, false);27                    Specification.Assert(op == CoyoteRuntime.Current.GetExecutingOperation(),28                        "Operation of the continuation is not the same.");29                });30                CoyoteTypes.Threading.Tasks.TaskCompletionSource<bool>.SetResult(tcs, true);31                CoyoteTypes.Threading.Tasks.Task.Wait(task);32            },33            configuration: this.GetConfiguration().WithTestingIterations(100));34        }35        [Fact(Timeout = 5000)]36        public void TestPausedOperationAwaitableResumesAsynchronously()37        {38            this.RunSystematicTest(() =>39            {40                var tcs1 = new TaskCompletionSource<bool>();41                var tcs2 = new TaskCompletionSource<bool>();42                var task = CoyoteTypes.Threading.Tasks.Task.Run(async () =>43                {44                    var op = CoyoteRuntime.Current.GetExecutingOperation();45                    CoyoteTypes.Threading.Tasks.TaskCompletionSource<bool>.SetResult(tcs2, true);46                    await CoyoteRuntime.Current.PauseOperationUntilAsync(() => tcs1.Task.IsCompleted, true);47                    Specification.Assert(op != CoyoteRuntime.Current.GetExecutingOperation(),48                        "Operation of the continuation is the same.");49                });50                CoyoteRuntime.Current.PauseOperationUntil(default, () => tcs2.Task.IsCompleted);51                CoyoteTypes.Threading.Tasks.TaskCompletionSource<bool>.SetResult(tcs1, true);52                CoyoteTypes.Threading.Tasks.Task.Wait(task);53            },54            configuration: this.GetConfiguration().WithTestingIterations(100));55        }56        private static async AsyncTask RecursiveAsync(TaskCompletionSource<bool> tcs, int depth, int maxDepth)57        {58            if (++depth < maxDepth)59            {60                await RecursiveAsync(tcs, depth, maxDepth);61            }62            if (depth == maxDepth)63            {64                await CoyoteRuntime.Current.PauseOperationUntilAsync(() => tcs.Task.IsCompleted, false);65            }66        }67        [Fact(Timeout = 5000)]68        public void TestPausedOperationAwaitableRunsAsynchronously()69        {70            this.RunSystematicTest(() =>71            {72                var tcs1 = new TaskCompletionSource<bool>();73                var tcs2 = new TaskCompletionSource<bool>();74                var task = CoyoteTypes.Threading.Tasks.Task.Run(async () =>75                {76                    var op = CoyoteRuntime.Current.GetExecutingOperation();77                    var t = RecursiveAsync(tcs1, 0, 10);78                    CoyoteTypes.Threading.Tasks.TaskCompletionSource<bool>.SetResult(tcs2, true);79                    await t;80                    Specification.Assert(op == CoyoteRuntime.Current.GetExecutingOperation(),81                        "Operation of the continuation is not the same.");82                });83                CoyoteRuntime.Current.PauseOperationUntil(default, () => tcs2.Task.IsCompleted);84                CoyoteTypes.Threading.Tasks.TaskCompletionSource<bool>.SetResult(tcs1, true);85                CoyoteTypes.Threading.Tasks.Task.Wait(task);86            },87            configuration: this.GetConfiguration().WithTestingIterations(100));88        }89    }90}...

TaskCompletionSource

Using AI Code Generation

1{2    {3        public void SetResult(T result) { }4    }5}6{7    {8        public void SetResult(T result) { }9    }10}11{12    {13        public void SetResult(T result) { }14    }15}16{17    {18        public void SetResult(T result) { }19    }20}21{22    {23        public void SetResult(T result) { }24    }25}26{27    {28        public void SetResult(T result) { }29    }30}31{32    {33        public void SetResult(T result) { }34    }35}36{37    {38        public void SetResult(T result) { }39    }40}

TaskCompletionSource

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Coyote.Rewriting.Types.Threading.Tasks;4{5    {6        static void Main(string[] args)7        {8            var tcs = new TaskCompletionSource<int>();9            tcs.SetResult(1);10            Task<int> t = tcs.Task;11            int result = t.Result;12            Console.WriteLine(result);13            Console.ReadLine();14        }15    }16}

TaskCompletionSource

Using AI Code Generation

1using Microsoft.Coyote.Rewriting.Types.Threading.Tasks;2using System.Threading.Tasks;3{4    {5        public static void Main()6        {7            TaskCompletionSource tcs = new TaskCompletionSource();8            Task t = tcs.Task;9            tcs.SetResult();10            t.Wait();11        }12    }13}14using System.Threading.Tasks;15{16    {17        public static void Main()18        {19            TaskCompletionSource tcs = new TaskCompletionSource();20            Task t = tcs.Task;21            tcs.SetResult();22            t.Wait();23        }24    }25}26using System.Threading.Tasks.Dataflow;27{28    {29        public static void Main()30        {31            TaskCompletionSource tcs = new TaskCompletionSource();32            Task t = tcs.Task;33            tcs.SetResult();34            t.Wait();35        }36    }37}38using System.Threading.Tasks.Extensions;39{40    {41        public static void Main()42        {43            TaskCompletionSource tcs = new TaskCompletionSource();44            Task t = tcs.Task;45            tcs.SetResult();46            t.Wait();47        }48    }49}50using System.Threading.Tasks.Fakes;51{52    {53        public static void Main()54        {55            TaskCompletionSource tcs = new TaskCompletionSource();56            Task t = tcs.Task;57            tcs.SetResult();58            t.Wait();59        }60    }61}62using System.Threading.Tasks.Parallel;63{64    {65        public static void Main()66        {67            TaskCompletionSource tcs = new TaskCompletionSource();68            Task t = tcs.Task;69            tcs.SetResult();70            t.Wait();71        }72    }73}

TaskCompletionSource

Using AI Code Generation

1{2    private static void Main()3    {4        var tcs = new TaskCompletionSource<int>();5        tcs.SetResult(1);6        var t = tcs.Task;7        t.Wait();8        Console.WriteLine(t.Result);9    }10}11{12    private static void Main()13    {14        var tcs = new TaskCompletionSource<int>();15        tcs.SetResult(1);16        var t = tcs.Task;17        t.Wait();18        Console.WriteLine(t.Result);19    }20}21{22    private static void Main()23    {24        var tcs = new TaskCompletionSource<int>();25        tcs.SetResult(1);26        var t = tcs.Task;27        t.Wait();28        Console.WriteLine(t.Result);29    }30}31{32    private static void Main()33    {34        var tcs = new TaskCompletionSource<int>();35        tcs.SetResult(1);36        var t = tcs.Task;37        t.Wait();38        Console.WriteLine(t.Result);39    }40}41{42    private static void Main()43    {44        var tcs = new TaskCompletionSource<int>();45        tcs.SetResult(1);46        var t = tcs.Task;47        t.Wait();48        Console.WriteLine(t.Result);49    }50}51{52    private static void Main()53    {54        var tcs = new TaskCompletionSource<int>();55        tcs.SetResult(1);56        var t = tcs.Task;57        t.Wait();58        Console.WriteLine(t.Result);59    }60}61{62    private static void Main()63    {64        var tcs = new TaskCompletionSource<int>();65        tcs.SetResult(1);66        var t = tcs.Task;67        t.Wait();68        Console.WriteLine(t.Result);69    }70}

TaskCompletionSource

Using AI Code Generation

1using System.Threading.Tasks;2using Microsoft.Coyote.Rewriting.Types.Threading.Tasks;3{4    {5        static void Main(string[] args)6        {7            TaskCompletionSource<int> tcs = new TaskCompletionSource<int>();8            Task t = new Task(() => tcs.SetResult(42));9            t.Start();10            int result = tcs.Task.Result;11            System.Console.WriteLine("Result: {0}", result);12        }13    }14}15using System.Threading.Tasks;16{17    {18        static void Main(string[] args)19        {20            TaskCompletionSource<int> tcs = new TaskCompletionSource<int>();21            Task t = new Task(() => tcs.SetResult(42));22            t.Start();23            int result = tcs.Task.Result;24            System.Console.WriteLine("Result: {0}", result);25        }26    }27}

TaskCompletionSource

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Coyote.Rewriting.Types.Threading.Tasks;4{5    {6        public static void Main(string[] args)7        {8            var tcs = new TaskCompletionSource<int>();9            var task = tcs.Task;10            var continuation = task.ContinueWith(t => Console.WriteLine(t.Result));11            tcs.SetResult(42);12            continuation.Wait();13        }14    }15}16using System;17using System.Threading.Tasks;18using Microsoft.Coyote.Rewriting.Types.Threading.Tasks;19{20    {21        public static void Main(string[] args)22        {23            var tcs = new TaskCompletionSource<int>();24            var task = tcs.Task;25            var continuation = task.ContinueWith(t => Console.WriteLine(t.Result));26            tcs.SetResult(42);27            continuation.Wait();28        }29    }30}31using System;32using System.Threading.Tasks;33using Microsoft.Coyote.Rewriting.Types.Threading.Tasks;34{35    {36        public static void Main(string[] args)37        {38            var tcs = new TaskCompletionSource<int>();39            var task = tcs.Task;40            var continuation = task.ContinueWith(t => Console.WriteLine(t.Result));41            tcs.SetResult(42);42            continuation.Wait();43        }44    }45}46using System;47using System.Threading.Tasks;48using Microsoft.Coyote.Rewriting.Types.Threading.Tasks;49{50    {51        public static void Main(string[] args)52        {53            var tcs = new TaskCompletionSource<int>();54            var task = tcs.Task;55            var continuation = task.ContinueWith(t => Console.WriteLine(t.Result));56            tcs.SetResult(42);57            continuation.Wait();58        }59    }60}

TaskCompletionSource

Using AI Code Generation

1{2    {3        static void Main(string[] args)4        {5            var tcs = new TaskCompletionSource<int>();6            var task = tcs.Task;7            var task2 = Task.Run(() =>8            {9                var t = Task.Delay(1000);10                t.Wait();11                tcs.SetResult(5);12            });13            var t = Task.WhenAll(task, task2);14            t.Wait();15            Console.WriteLine(task.Result);16        }17    }18}

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.