mirror of
https://github.com/AtomUI/AtomUI.git
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559 lines
21 KiB
C#
559 lines
21 KiB
C#
using System.Collections.Concurrent;
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using System.Reflection;
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using Shouldly;
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using Xunit;
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namespace AtomUI.Controls.Shared.Tests.Net;
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public class UploadSchedulerTests
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{
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[Fact]
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public async Task Running_Task_Count_Increments_When_Task_Starts()
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{
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var transport = new BlockingUploadTransport();
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var scheduler = new FileUploadScheduler(transport);
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var task = CreateUploadTask("running.txt");
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scheduler.EnqueueTask(task);
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await transport.Started.Task.WaitAsync(
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TimeSpan.FromSeconds(3),
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TestContext.Current.CancellationToken);
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GetRunningTaskCount(scheduler).ShouldBe(1);
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task.Status.ShouldBe(FileUploadStatus.Uploading);
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await scheduler.CancelAllAsync(TestContext.Current.CancellationToken);
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}
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[Fact]
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public async Task Running_Task_Count_Decrements_When_Upload_Completes()
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{
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var transport = new BlockingUploadTransport();
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var scheduler = new FileUploadScheduler(transport);
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var task = CreateUploadTask("complete.txt");
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scheduler.EnqueueTask(task);
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await transport.Started.Task.WaitAsync(
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TimeSpan.FromSeconds(3),
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TestContext.Current.CancellationToken);
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GetRunningTaskCount(scheduler).ShouldBe(1);
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transport.Complete(FileUploadResult.SuccessResult(new Uri("https://example.com/complete.txt"), 12, TimeSpan.FromMilliseconds(1)));
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await WaitUntilAsync(() => task.Status == FileUploadStatus.Success);
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GetRunningTaskCount(scheduler).ShouldBe(0);
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}
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[Fact]
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public async Task Queued_Progress_After_Terminal_Result_Is_Not_Published()
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{
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var context = new QueuedSynchronizationContext();
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var transport = new ImmediateProgressSuccessTransport();
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var scheduler = new FileUploadScheduler(transport);
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var task = CreateUploadTask("late-progress.txt");
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var completed = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously);
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var progressReports = new List<double>();
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task.UploadProgressHandler = (_, _, progress) => progressReports.Add(progress);
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task.UploadCompletedHandler = (_, _, _) => completed.TrySetResult();
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EnqueueWithSynchronizationContext(scheduler, task, context);
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await completed.Task.WaitAsync(
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TimeSpan.FromSeconds(3),
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TestContext.Current.CancellationToken);
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task.Status.ShouldBe(FileUploadStatus.Success);
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context.PendingCount.ShouldBe(1);
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context.RunAll();
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progressReports.ShouldBeEmpty();
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task.Status.ShouldBe(FileUploadStatus.Success);
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}
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[Fact]
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public async Task CancelAllAsync_Cancels_Running_Task()
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{
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var transport = new BlockingUploadTransport();
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var scheduler = new FileUploadScheduler(transport);
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var task = CreateUploadTask("cancel.txt");
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scheduler.EnqueueTask(task);
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await transport.Started.Task.WaitAsync(
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TimeSpan.FromSeconds(3),
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TestContext.Current.CancellationToken);
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task.Status.ShouldBe(FileUploadStatus.Uploading);
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await scheduler.CancelAllAsync(TestContext.Current.CancellationToken);
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await WaitUntilAsync(() => task.Status == FileUploadStatus.Cancelled);
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GetRunningTaskCount(scheduler).ShouldBe(0);
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}
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[Fact]
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public async Task CancelUploadAsync_Waits_For_Transport_To_Exit_After_Cancellation_Is_Observed()
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{
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var transport = new DelayedCancellationUploadTransport();
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var scheduler = new FileUploadScheduler(transport);
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var task = CreateUploadTask("delayed-cancel.txt");
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scheduler.EnqueueTask(task);
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await transport.Started.Task.WaitAsync(
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TimeSpan.FromSeconds(3),
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TestContext.Current.CancellationToken);
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var cancellationTask = scheduler.CancelUploadAsync(task);
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await transport.CancellationObserved.Task.WaitAsync(
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TimeSpan.FromSeconds(3),
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TestContext.Current.CancellationToken);
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cancellationTask.IsCompleted.ShouldBeFalse();
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transport.AllowExit.TrySetResult();
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await cancellationTask.WaitAsync(
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TimeSpan.FromSeconds(3),
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TestContext.Current.CancellationToken);
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task.Status.ShouldBe(FileUploadStatus.Cancelled);
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GetRunningTaskCount(scheduler).ShouldBe(0);
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}
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[Fact]
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public async Task CancelUploadAsync_Waits_When_Transport_Blocks_Before_Returning_Its_Task()
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{
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var transport = new SynchronouslyBlockingUploadTransport();
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var scheduler = new FileUploadScheduler(transport);
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var task = CreateUploadTask("blocked-start.txt");
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var enqueueTask = Task.Run(
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() => scheduler.EnqueueTask(task),
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TestContext.Current.CancellationToken);
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await transport.Started.Task.WaitAsync(
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TimeSpan.FromSeconds(3),
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TestContext.Current.CancellationToken);
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var cancellationTask = scheduler.CancelUploadAsync(task);
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await WaitUntilAsync(() => task.CancellationTokenSource?.IsCancellationRequested == true);
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cancellationTask.IsCompleted.ShouldBeFalse();
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transport.AllowReturn.TrySetResult();
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await enqueueTask.WaitAsync(
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TimeSpan.FromSeconds(3),
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TestContext.Current.CancellationToken);
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await cancellationTask.WaitAsync(
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TimeSpan.FromSeconds(3),
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TestContext.Current.CancellationToken);
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task.Status.ShouldBe(FileUploadStatus.Cancelled);
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GetRunningTaskCount(scheduler).ShouldBe(0);
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}
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[Fact]
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public async Task EnqueueTask_Does_Not_Block_When_Transport_Blocks_Before_Returning_Its_Task()
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{
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var transport = new SynchronouslyBlockingSuccessfulUploadTransport();
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var scheduler = new FileUploadScheduler(transport);
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var task = CreateUploadTask("non-blocking-enqueue.txt");
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var enqueueTask = Task.Run(
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() => scheduler.EnqueueTask(task),
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TestContext.Current.CancellationToken);
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await transport.Started.Task.WaitAsync(
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TimeSpan.FromSeconds(3),
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TestContext.Current.CancellationToken);
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try
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{
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enqueueTask.IsCompleted.ShouldBeTrue();
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}
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finally
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{
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transport.AllowReturn.TrySetResult();
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await enqueueTask.WaitAsync(
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TimeSpan.FromSeconds(3),
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TestContext.Current.CancellationToken);
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}
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await WaitUntilAsync(() => task.Status == FileUploadStatus.Success);
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}
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[Fact]
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public async Task CancelAllAsync_Waits_For_Completion_Handler_To_Return()
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{
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var transport = new BlockingUploadTransport();
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var scheduler = new FileUploadScheduler(transport);
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var task = CreateUploadTask("completion-handler.txt");
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var handlerStarted = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously);
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var allowHandlerExit = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously);
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task.UploadCompletedHandler = (_, _, _) =>
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{
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handlerStarted.TrySetResult();
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allowHandlerExit.Task.GetAwaiter().GetResult();
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};
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scheduler.EnqueueTask(task);
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await transport.Started.Task.WaitAsync(
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TimeSpan.FromSeconds(3),
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TestContext.Current.CancellationToken);
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transport.Complete(FileUploadResult.SuccessResult(
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new Uri("https://example.com/completion-handler.txt"),
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12,
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TimeSpan.FromMilliseconds(1)));
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await handlerStarted.Task.WaitAsync(
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TimeSpan.FromSeconds(3),
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TestContext.Current.CancellationToken);
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var cancellationTask = scheduler.CancelAllAsync(TestContext.Current.CancellationToken);
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try
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{
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cancellationTask.IsCompleted.ShouldBeFalse();
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}
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finally
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{
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allowHandlerExit.TrySetResult();
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await cancellationTask.WaitAsync(
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TimeSpan.FromSeconds(3),
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TestContext.Current.CancellationToken);
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}
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GetRunningTaskCount(scheduler).ShouldBe(0);
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}
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[Fact]
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public async Task CancelAllAsync_Restores_Scheduling_When_A_Pending_Handler_Throws()
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{
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var transport = new BlockingUploadTransport();
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var scheduler = new FileUploadScheduler(transport, maxConcurrentTasks: 1);
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var runningTask = CreateUploadTask("running-before-handler-error.txt");
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var pendingTask = CreateUploadTask("pending-handler-error.txt");
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pendingTask.UploadCancelledHandler = (_, _, _) =>
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throw new InvalidOperationException("pending cancellation callback failed");
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scheduler.EnqueueTask(runningTask);
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await transport.Started.Task.WaitAsync(
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TimeSpan.FromSeconds(3),
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TestContext.Current.CancellationToken);
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scheduler.EnqueueTask(pendingTask);
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try
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{
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await Should.ThrowAsync<InvalidOperationException>(() =>
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scheduler.CancelAllAsync(TestContext.Current.CancellationToken));
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scheduler.IsScheduleEnabled().ShouldBeTrue();
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runningTask.Status.ShouldBe(FileUploadStatus.Cancelled);
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}
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finally
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{
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transport.Complete(FileUploadResult.SuccessResult(
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new Uri("https://example.com/running-before-handler-error.txt"),
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12,
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TimeSpan.FromMilliseconds(1)));
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}
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}
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[Fact]
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public async Task CancelAllAsync_Cancels_Every_Pending_Task_When_The_Token_Is_Cancelled_By_A_Handler()
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{
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var transport = new BlockingUploadTransport();
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var scheduler = new FileUploadScheduler(transport);
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using var cancellation = new CancellationTokenSource();
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var firstTask = CreateUploadTask("cancel-token-first.txt");
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var secondTask = CreateUploadTask("cancel-token-second.txt");
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firstTask.UploadCancelledHandler = (_, _, _) => cancellation.Cancel();
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scheduler.DisableSchedule();
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scheduler.EnqueueTask(firstTask);
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scheduler.EnqueueTask(secondTask);
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await Should.ThrowAsync<OperationCanceledException>(() =>
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scheduler.CancelAllAsync(cancellation.Token));
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firstTask.Status.ShouldBe(FileUploadStatus.Cancelled);
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secondTask.Status.ShouldBe(FileUploadStatus.Cancelled);
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}
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[Fact]
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public async Task Concurrent_Transport_Changes_Are_Applied_In_Call_Order()
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{
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var originalTransport = new BlockingUploadTransport();
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var intermediateTransport = new BlockingUploadTransport();
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var finalTransport = new BlockingUploadTransport();
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var scheduler = new FileUploadScheduler(originalTransport);
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var cancellationHandlerStarted = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously);
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var allowCancellationHandlerExit = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously);
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var pendingTask = CreateUploadTask("serialized-transport-change.txt");
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pendingTask.UploadCancelledHandler = (_, _, _) =>
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{
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cancellationHandlerStarted.TrySetResult();
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allowCancellationHandlerExit.Task.GetAwaiter().GetResult();
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};
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scheduler.DisableSchedule();
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scheduler.EnqueueTask(pendingTask);
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var firstChange = Task.Run(
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() => scheduler.SetTransportAsync(intermediateTransport, TestContext.Current.CancellationToken),
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TestContext.Current.CancellationToken);
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await cancellationHandlerStarted.Task.WaitAsync(
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TimeSpan.FromSeconds(3),
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TestContext.Current.CancellationToken);
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var secondChange = scheduler.SetTransportAsync(
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finalTransport,
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TestContext.Current.CancellationToken);
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try
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{
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secondChange.IsCompleted.ShouldBeFalse();
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}
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finally
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{
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allowCancellationHandlerExit.TrySetResult();
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await Task.WhenAll(firstChange, secondChange).WaitAsync(
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TimeSpan.FromSeconds(3),
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TestContext.Current.CancellationToken);
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}
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scheduler.Transport.ShouldBeSameAs(finalTransport);
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}
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[Fact]
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public async Task EnableSchedule_Starts_Tasks_Queued_While_Scheduling_Was_Disabled()
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{
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var transport = new BlockingUploadTransport();
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var scheduler = new FileUploadScheduler(transport);
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var task = CreateUploadTask("resume.txt");
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scheduler.DisableSchedule();
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scheduler.EnqueueTask(task);
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transport.Started.Task.IsCompleted.ShouldBeFalse();
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scheduler.EnableSchedule();
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await transport.Started.Task.WaitAsync(
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TimeSpan.FromSeconds(3),
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TestContext.Current.CancellationToken);
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await scheduler.CancelAllAsync(TestContext.Current.CancellationToken);
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}
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[Fact]
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public async Task SetTransportAsync_Cancels_Running_Task_Before_Replacing_Transport()
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{
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var oldTransport = new BlockingUploadTransport();
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var newTransport = new BlockingUploadTransport();
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var scheduler = new FileUploadScheduler(oldTransport);
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var task = CreateUploadTask("replace.txt");
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scheduler.EnqueueTask(task);
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await oldTransport.Started.Task.WaitAsync(
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TimeSpan.FromSeconds(3),
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TestContext.Current.CancellationToken);
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task.Status.ShouldBe(FileUploadStatus.Uploading);
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await scheduler.SetTransportAsync(newTransport, TestContext.Current.CancellationToken);
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await WaitUntilAsync(() => task.Status == FileUploadStatus.Cancelled);
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scheduler.Transport.ShouldBeSameAs(newTransport);
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GetRunningTaskCount(scheduler).ShouldBe(0);
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}
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private static FileUploadTask CreateUploadTask(string name)
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{
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return new FileUploadTask
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{
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UploadFileInfo = new UploadFileInfo(
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name,
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new MemoryUploadFileSource(),
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new Uri($"file:///tmp/{name}"),
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12)
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};
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}
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private static int GetRunningTaskCount(FileUploadScheduler scheduler)
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{
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var field = typeof(FileUploadScheduler).GetField("_runningTasks", BindingFlags.Instance | BindingFlags.NonPublic);
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field.ShouldNotBeNull();
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var runningTasks = field.GetValue(scheduler);
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runningTasks.ShouldNotBeNull();
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var countProperty = runningTasks.GetType().GetProperty("Count");
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countProperty.ShouldNotBeNull();
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return countProperty.GetValue(runningTasks).ShouldBeAssignableTo<int>();
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}
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private static async Task WaitUntilAsync(Func<bool> condition)
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{
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using var timeout = new CancellationTokenSource(TimeSpan.FromSeconds(3));
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while (!condition())
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{
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timeout.Token.ThrowIfCancellationRequested();
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await Task.Delay(10, timeout.Token);
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}
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}
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private static void EnqueueWithSynchronizationContext(
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FileUploadScheduler scheduler,
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FileUploadTask task,
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SynchronizationContext context)
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{
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var previousContext = SynchronizationContext.Current;
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SynchronizationContext.SetSynchronizationContext(context);
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try
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{
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scheduler.EnqueueTask(task);
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}
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finally
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{
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SynchronizationContext.SetSynchronizationContext(previousContext);
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}
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}
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private sealed class BlockingUploadTransport : IFileUploadTransport
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{
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public TaskCompletionSource<UploadFileInfo> Started { get; } =
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new(TaskCreationOptions.RunContinuationsAsynchronously);
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public TaskCompletionSource<bool> CancellationObserved { get; } =
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new(TaskCreationOptions.RunContinuationsAsynchronously);
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private readonly TaskCompletionSource<FileUploadResult> _completion =
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new(TaskCreationOptions.RunContinuationsAsynchronously);
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public void Complete(FileUploadResult result)
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{
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_completion.TrySetResult(result);
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}
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public async Task<FileUploadResult> UploadAsync(
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UploadFileInfo fileInfo,
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object? context = null,
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IProgress<FileUploadProgress>? progress = null,
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CancellationToken cancellationToken = default)
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{
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using var registration = cancellationToken.Register(static state =>
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{
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((TaskCompletionSource<bool>)state!).TrySetResult(true);
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}, CancellationObserved);
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Started.TrySetResult(fileInfo);
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return await _completion.Task.WaitAsync(cancellationToken);
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}
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}
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private sealed class ImmediateProgressSuccessTransport : IFileUploadTransport
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{
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public Task<FileUploadResult> UploadAsync(
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UploadFileInfo fileInfo,
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object? context = null,
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IProgress<FileUploadProgress>? progress = null,
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CancellationToken cancellationToken = default)
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{
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progress?.Report(new FileUploadProgress
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{
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BytesSent = fileInfo.Size ?? 0,
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TotalBytes = fileInfo.Size ?? 0
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});
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return Task.FromResult(FileUploadResult.SuccessResult(
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new Uri("https://example.com/late-progress.txt"),
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fileInfo.Size ?? 0,
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TimeSpan.FromMilliseconds(1)));
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}
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}
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private sealed class QueuedSynchronizationContext : SynchronizationContext
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{
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private readonly ConcurrentQueue<(SendOrPostCallback Callback, object? State)> _callbacks = new();
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internal int PendingCount => _callbacks.Count;
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public override void Post(SendOrPostCallback d, object? state)
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{
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_callbacks.Enqueue((d, state));
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}
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internal void RunAll()
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{
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while (_callbacks.TryDequeue(out var callback))
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{
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callback.Callback(callback.State);
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}
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}
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}
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private sealed class MemoryUploadFileSource : IUploadFileSource
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{
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public ValueTask<Stream> OpenReadAsync(CancellationToken cancellationToken = default)
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{
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cancellationToken.ThrowIfCancellationRequested();
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return ValueTask.FromResult<Stream>(new MemoryStream([1], writable: false));
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}
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}
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private sealed class DelayedCancellationUploadTransport : IFileUploadTransport
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{
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internal TaskCompletionSource Started { get; } =
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new(TaskCreationOptions.RunContinuationsAsynchronously);
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internal TaskCompletionSource CancellationObserved { get; } =
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new(TaskCreationOptions.RunContinuationsAsynchronously);
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internal TaskCompletionSource AllowExit { get; } =
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new(TaskCreationOptions.RunContinuationsAsynchronously);
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public async Task<FileUploadResult> UploadAsync(
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UploadFileInfo fileInfo,
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object? context = null,
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IProgress<FileUploadProgress>? progress = null,
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CancellationToken cancellationToken = default)
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{
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Started.TrySetResult();
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try
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{
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await Task.Delay(Timeout.InfiniteTimeSpan, cancellationToken);
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}
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catch (OperationCanceledException)
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{
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CancellationObserved.TrySetResult();
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await AllowExit.Task;
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throw;
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}
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throw new InvalidOperationException("The delayed transport should only finish by cancellation.");
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}
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}
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private sealed class SynchronouslyBlockingUploadTransport : IFileUploadTransport
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{
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internal TaskCompletionSource Started { get; } =
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new(TaskCreationOptions.RunContinuationsAsynchronously);
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internal TaskCompletionSource AllowReturn { get; } =
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new(TaskCreationOptions.RunContinuationsAsynchronously);
|
|
|
|
public Task<FileUploadResult> UploadAsync(
|
|
UploadFileInfo fileInfo,
|
|
object? context = null,
|
|
IProgress<FileUploadProgress>? progress = null,
|
|
CancellationToken cancellationToken = default)
|
|
{
|
|
Started.TrySetResult();
|
|
AllowReturn.Task.GetAwaiter().GetResult();
|
|
return Task.FromCanceled<FileUploadResult>(cancellationToken);
|
|
}
|
|
}
|
|
|
|
private sealed class SynchronouslyBlockingSuccessfulUploadTransport : IFileUploadTransport
|
|
{
|
|
internal TaskCompletionSource Started { get; } =
|
|
new(TaskCreationOptions.RunContinuationsAsynchronously);
|
|
internal TaskCompletionSource AllowReturn { get; } =
|
|
new(TaskCreationOptions.RunContinuationsAsynchronously);
|
|
|
|
public Task<FileUploadResult> UploadAsync(
|
|
UploadFileInfo fileInfo,
|
|
object? context = null,
|
|
IProgress<FileUploadProgress>? progress = null,
|
|
CancellationToken cancellationToken = default)
|
|
{
|
|
Started.TrySetResult();
|
|
AllowReturn.Task.GetAwaiter().GetResult();
|
|
return Task.FromResult(FileUploadResult.SuccessResult(
|
|
new Uri("https://example.com/non-blocking-enqueue.txt"),
|
|
12,
|
|
TimeSpan.FromMilliseconds(1)));
|
|
}
|
|
}
|
|
}
|