[Test] public void NewSingleThreadPoolChokesOnNullFactory()
{
var e = Assert.Throws <ArgumentNullException>(
() => Executors.NewSingleThreadExecutor(null));
Assert.That(e.ParamName, Is.EqualTo("threadFactory"));
}
[Test] public void NewSingleThreadExecutorWithFactoryCanExecuteRunnables()
{
var e = Executors.NewSingleThreadExecutor(new SimpleThreadFactory());
CanExecuteRunnable(e);
JoinPool(e);
}
[Test] public void NewSingleThreadExecutorCanExecuteRunnables()
{
var e = Executors.NewSingleThreadExecutor();
CanExecuteRunnable(e);
JoinPool(e);
}
[Test] public void NewDefaultThreadFactoryHasSpecifiedPriorityBackgroundStatusAndName()
{
Action r = ThreadManager.GetManagedAction(
delegate
{
Thread current = Thread.CurrentThread;
Assert.IsTrue(!current.IsBackground);
Assert.IsTrue(current.Priority <= ThreadPriority.Normal);
String name = current.Name;
Assert.IsTrue(name.EndsWith("thread-1"));
});
IExecutorService e = Executors.NewSingleThreadExecutor(Executors.NewDefaultThreadFactory());
e.Execute(r);
e.Shutdown();
Thread.Sleep(Delays.Short);
JoinPool(e);
ThreadManager.JoinAndVerify();
}
[Test] public void TimeoutsFromExecuteWillTimeOutIfTheyComputeTooLong()
{
const int n = 10000;
IExecutorService executor = Executors.NewSingleThreadExecutor();
List <ICallable <int> > tasks = new List <ICallable <int> >(n);
try
{
DateTime startTime = DateTime.UtcNow;
while (tasks.Count < n)
{
tasks.Add(new TimedCallable <int>(executor,
delegate { Thread.SpinWait(300); return(1); }, TimeSpan.FromMilliseconds(1)));
}
int iters = 0;
foreach (var task in tasks)
{
try
{
++iters;
task.Call();
}
catch (TimeoutException)
{
Assert.That(iters, Is.GreaterThan(0));
return;
}
}
// if by chance we didn't ever time out, total time must be small
TimeSpan elapsed = DateTime.UtcNow - startTime;
Assert.That(elapsed.TotalMilliseconds, Is.LessThan(n));
}
finally
{
JoinPool(executor);
}
}