public void InvokesOnlyOneAtTheTimeAndLastOneWins()
{
var it = new InvocationThrottle(min: TimeSpan.FromMilliseconds(1), max: TimeSpan.FromMilliseconds(2));
int im_doing_stuff = 0;
bool hasException = false;
int invocation_count = 0;
ConcurrentBag<AutoResetEvent> ares = new ConcurrentBag<AutoResetEvent>();
for (int i = 0; i < 10; i++)
{
var local_i = i;
it.Invoke(() =>
{
var are = new AutoResetEvent(initialState: false);
ares.Add(are);
try
{
Interlocked.Increment(ref invocation_count);
LongAction(ref im_doing_stuff);
if((local_i < 9 && invocation_count != 1) || (local_i == 9 && invocation_count != 2))
{
throw new Exception();
}
}
catch(Exception ex)
{
hasException = true;
}
are.Set();
});
Thread.Sleep(1);
}
Thread.Sleep(200);
OnMtaThread(() => AutoResetEvent.WaitAll(ares.ToArray()));
if (hasException)
Assert.Fail();
}
public void ActionIsInvokedOnDifferentThread()
{
var it = new InvocationThrottle(TimeSpan.MinValue);
var are = new AutoResetEvent(initialState: false);
var tid = Thread.CurrentThread.ManagedThreadId;
it.Invoke(() =>
{
Assert.AreNotEqual(tid, Thread.CurrentThread.ManagedThreadId);
are.Set();
});
are.WaitOne();
Assert.IsTrue(true);
}
public void WaitsMinTimespanBeforeExecuting()
{
var min = TimeSpan.FromMilliseconds(100);
var it = new InvocationThrottle(min);
var tid = Thread.CurrentThread.ManagedThreadId;
var are = new AutoResetEvent(initialState: false);
it.Invoke(() =>
{
Assert.AreNotEqual(tid, Thread.CurrentThread.ManagedThreadId);
are.Set();
});
var sw = Stopwatch.StartNew();
are.WaitOne();
sw.Stop();
Assert.IsTrue(sw.Elapsed.TotalMilliseconds >= min.TotalMilliseconds);
}
public void MultipleRequestsForInvocationDelayActualInvocationUntilMaxTimespanElapsed()
{
var min = TimeSpan.FromMilliseconds(100);
var max = TimeSpan.FromMilliseconds(500);
var it = new InvocationThrottle(min, max);
var tid = Thread.CurrentThread.ManagedThreadId;
var are = new AutoResetEvent(initialState: false);
var t = new Task(() =>
{
bool keep_going = true;
while(keep_going)
{
it.Invoke(() =>
{
Assert.AreNotEqual(tid, Thread.CurrentThread.ManagedThreadId);
are.Set();
keep_going = false;
});
}
});
var sw = Stopwatch.StartNew();
t.Start();
are.WaitOne();
sw.Stop();
Trace.WriteLine(sw.Elapsed.TotalMilliseconds + " , " + max.TotalMilliseconds);
Assert.IsTrue(sw.Elapsed.TotalMilliseconds >= max.TotalMilliseconds);
}