public void TestScheduleOneTask()
{
var scheduler = new SerialTaskScheduler(logExceptions: true);
var task = scheduler.QueueTask(() => 42);
task.Wait(TimeSpan.FromSeconds(10)).Should().BeTrue();
task.Result.Should().Be(42);
scheduler.Dispose();
scheduler.Exceptions.Should().BeEmpty();
}
public void TestStarStopThread()
{
using (var scheduler = new SerialTaskScheduler(TimeSpan.FromMilliseconds(100), true))
{
scheduler.IsExecutingThreadRunning.Should().BeFalse("Because no task has ever been scheduled and thus no additional thread should be waiting for it");
scheduler.QueueTask(() => { });
scheduler.IsExecutingThreadRunning.Should().BeTrue("Because a task has just been queued");
// F*****g AppVeyor is so incredibly slow, no amount of timeout is enough.
WaitFor(() => scheduler.IsExecutingThreadRunning == false,
TimeSpan.FromSeconds(10)).Should().BeTrue("Because for twice the timeout no additional task has been executed and thus the thread should've been ended");
scheduler.Exceptions.Should().BeEmpty("Because no exceptions should've been thrown in the process");
}
}
public void TestScheduleManyTasks()
{
var scheduler = new SerialTaskScheduler(logExceptions: true);
const int taskCount = 1000;
var tasks = new List <Task <int> >(taskCount);
for (int i = 0; i < taskCount; ++i)
{
var task = scheduler.QueueTask(() => 42);
tasks.Add(task);
}
Task.WaitAll(tasks.Cast <Task>().ToArray(), TimeSpan.FromSeconds(10))
.Should().BeTrue();
tasks.All(x => x.Result == 42).Should().BeTrue();
scheduler.Exceptions.Should().BeEmpty();
}
public void TestSchedulerHighjacking()
{
using (var scheduler = new SerialTaskScheduler(logExceptions: true))
{
TaskScheduler actualInnerScheduler = null;
var task = scheduler.QueueTask(() =>
{
var task2 = new Task <int>(() =>
{
actualInnerScheduler = TaskScheduler.Current;
return(42);
});
task2.Start();
return(task2.Result);
});
task.Wait(TimeSpan.FromSeconds(1)).Should().BeTrue();
task.Result.Should().Be(42);
actualInnerScheduler.Should().BeSameAs(TaskScheduler.Default);
}
}