public async Task UnhandledExceptions2()
{
Exception testEx = new Exception();
Exception testEx2 = new Exception();
ForEach <int> _forEach = Builder
.For(Enumerable.Range(1, 100))
.Each((T, token) =>
{
if (T == 50)
{
throw testEx;
}
return(Task.Delay(10, token));
})
.WithInitialDegreeOfParallelism(10)
.WhenException((_, ex) =>
{
Assert.AreEqual(testEx, ex);
throw testEx2;
})
.Build();
AggregateException aggr = await Assert.ThrowsExceptionAsync <AggregateException>(() => _forEach.Run(CancellationToken.None));
Assert.AreEqual(testEx2, aggr.InnerExceptions.Single());
Assert.IsTrue(_forEach.RunStats.Completed >= 40);
Assert.IsTrue(_forEach.RunStats.Started <= 60);
}
public async Task Parallelization()
{
bool f1 = false;
ForEach <int> _forEach = Builder
.For(new int[] { 1, 2, 3 })
.Each(async(T, token) =>
{
if (T == 1)
{
await Task.Delay(200);
f1 = true;
}
if (T == 2)
{
await Task.Delay(100);
}
if (T == 3)
{
Assert.IsTrue(f1);
}
})
.WithInitialDegreeOfParallelism(2)
.Build();
RunResult result = await _forEach.Run(CancellationToken.None);
Assert.AreEqual(RunResult.Finished, result);
}
public async Task Forget()
{
ForEach <int> _forEach = Builder
.For(Enumerable.Range(1, 100))
.Each(async(T, token) =>
{
if (T == 50)
{
throw new Exception();
}
try
{
await Task.Delay(100, token);
}
catch (OperationCanceledException)
{
Assert.Fail();
}
})
.WithInitialDegreeOfParallelism(10)
.WhenException((T, ex) => ExceptionResolution.Forget)
.Build();
RunResult result = await _forEach.Run(CancellationToken.None);
Assert.AreEqual(RunResult.Interrupted, result);
Assert.IsTrue(_forEach.RunStats.Started <= 60);
Assert.IsTrue(_forEach.RunStats.Completed >= 40);
}
public void ForEach_Create_Monthly_Periods()
{
ForEach fe = ForEach.Month;
List <Period> periods = fe.GetPeriods();
Assert.AreEqual(12, periods.Count);
Assert.AreEqual(1, periods[0].From.Day);
Assert.AreEqual(31, periods[0].To.Day);
}
public async Task BasicCancellation()
{
int started = 0;
ForEach <int> _forEach = Builder
.For(new int[] { 1, 2, 3, 4, 5 })
.Each(async(T, token) =>
{
Interlocked.Increment(ref started);
try
{
await Task.Delay(1000, token);
}
finally
{
Assert.IsTrue(token.IsCancellationRequested);
}
Assert.Fail();
})
.WithInitialDegreeOfParallelism(4)
.WhenException((_, ex) =>
{
Assert.Fail();
return(ExceptionResolution.Abandon);
})
.Build();
using (CancellationTokenSource cts = new CancellationTokenSource())
{
cts.CancelAfter(500);
try
{
await _forEach.Run(cts.Token);
Assert.Fail();
}
catch (OperationCanceledException ex)
{
Assert.AreEqual(ex.CancellationToken, cts.Token);
}
}
Assert.AreEqual(_forEach.CurrentDegreeOfParallelism, started);
await Task.Delay(1500);
Assert.AreEqual(_forEach.CurrentDegreeOfParallelism, started);
}
public void ForEach_Create_Monthly_Periods_StartingFrom_10thOfMont()
{
ForEach fe = ForEach.Month.StartingFrom(The.Year(2012).On.January.The10th);
List <Period> periods = fe.GetPeriods();
Assert.AreEqual(12, periods.Count);
Assert.AreEqual(1, periods[0].From.Month);
Assert.AreEqual(2, periods[0].To.Month);
Assert.AreEqual(10, periods[0].From.Day);
Assert.AreEqual(9, periods[0].To.Day);
Assert.AreEqual(10, periods[1].From.Day);
Assert.AreEqual(9, periods[1].To.Day);
}
public async Task ParallelismVariance()
{
ForEach <int> _forEach = Builder
.For(Enumerable.Range(1, 100))
.Each((T, token) => Task.Delay(100))
.WithInitialDegreeOfParallelism(1)
.Build();
var t = _forEach.Run(CancellationToken.None);
var t1 = Task.Run(async() =>
{
for (int i = 0; i < 10; i++)
{
_forEach.IncreaseParallelism(1);
await Task.Delay(50);
}
});
var t2 = Task.Run(async() =>
{
for (int i = 1; i <= 10; i++)
{
_forEach.IncreaseParallelism(i);
await Task.Delay(50);
}
});
var t3 = Task.Run(async() =>
{
for (int i = 0; i < 10; i++)
{
_forEach.DecreaseParallelism(1);
await Task.Delay(50);
}
});
RunResult result = await t;
Assert.AreEqual(RunResult.Finished, result);
await Task.WhenAll(t1, t2, t3);
Assert.AreEqual(56, _forEach.CurrentDegreeOfParallelism);
}
public void ForEach_Create_Daily_Recurrency()
{
ForEach fe = ForEach.Day.StartingFrom(The.Year(2012).On.January.The1st);
List <Period> periods = fe.GetPeriods();
Assert.AreEqual(1, periods[0].From.Day);
Assert.AreEqual(1, periods[0].From.Month);
Assert.AreEqual(2012, periods[0].From.Year);
Assert.AreEqual(2, periods[1].From.Day);
Assert.AreEqual(1, periods[1].From.Month);
Assert.AreEqual(2012, periods[1].From.Year);
Assert.AreEqual(31, periods.Last().From.Day);
Assert.AreEqual(12, periods.Last().From.Month);
Assert.AreEqual(2012, periods.Last().From.Year);
}
public async Task Basic()
{
TaskCompletionSource <bool> tcs = new TaskCompletionSource <bool>();
ForEach <int> _forEach = Builder
.For(new int[] { 1, 2, 3 })
.Each((T, token) => Task.Delay(T * 100, token).ContinueWith(_ => tcs.Task))
.Build();
Task <RunResult> t = _forEach.Run(CancellationToken.None);
await Assert.ThrowsExceptionAsync <InvalidOperationException>(() => _forEach.Run(CancellationToken.None));
tcs.SetResult(true);
RunResult result = await t;
Assert.AreEqual(RunResult.Finished, result);
Assert.IsTrue(_sw.ElapsedMilliseconds >= 600);
}
public async Task Swallow()
{
int swallowed = 0;
ForEach <int> _forEach = Builder
.For(new int[] { 1, 2, 3, 4, 5, 6 })
.Each((T, token) => throw new Exception())
.WhenException((T, ex) =>
{
Interlocked.Increment(ref swallowed);
return(ExceptionResolution.Swallow);
})
.Build();
await _forEach.Run(CancellationToken.None);
Assert.AreEqual(6, swallowed);
Assert.AreEqual(6, _forEach.RunStats.ExceptionsCaught);
Assert.AreEqual(6, _forEach.RunStats.ExceptionsSwallowed);
}
public async Task SoftStop()
{
ForEach <int> _forEach = Builder
.For(Enumerable.Range(1, 100))
.Each((T, token) =>
{
if (T == 50)
{
throw new Exception();
}
return(Task.Delay(100, token));
})
.WithInitialDegreeOfParallelism(10)
.WhenException((T, ex) => ExceptionResolution.SoftStop)
.Build();
RunResult result = await _forEach.Run(CancellationToken.None);
Assert.AreEqual(RunResult.Interrupted, result);
Assert.IsTrue(_forEach.RunStats.Started <= 60);
Assert.IsTrue(_forEach.RunStats.Completed >= 40);
}