public async void Unbounded_2_Consumers()
{
var push = new ReplayAsyncEnumerable <int>();
var en1 = push.GetAsyncEnumerator();
var en2 = push.GetAsyncEnumerator();
var task1 = Task.Run(async() =>
{
await en1.AssertResult(1, 2, 3, 4, 5);
});
var task2 = Task.Run(async() =>
{
await en2.AssertResult(1, 2, 3, 4, 5);
});
for (var i = 1; i <= 5; i++)
{
await push.Next(i);
}
await push.Complete();
await task1;
await task2;
}
public async Task PushToLimitedListWithFunc()
{
var asyncEnum = new ReplayAsyncEnumerable <int>();
var list = new List <int>();
var max = 5;
var task = asyncEnum.PushToList(list, () => max).LastAsync();
Assert.Empty(list);
for (int i = 0; i < 7; i++)
{
await asyncEnum.Next(i);
}
await Task.Delay(500);
Assert.Equal(5, list.Count);
max = 2;
for (int i = 0; i < 4; i++)
{
await asyncEnum.Next(i);
}
await asyncEnum.Complete();
await task;
Assert.Equal(2, list.Count);
}
public async void TimedSized_2_Consumers_Error()
{
var push = new ReplayAsyncEnumerable <int>(10, TimeSpan.FromHours(1));
var en1 = push.GetAsyncEnumerator();
var en2 = push.GetAsyncEnumerator();
var task1 = Task.Run(async() =>
{
await en1.AssertFailure(typeof(InvalidOperationException), 1, 2, 3, 4, 5);
});
var task2 = Task.Run(async() =>
{
await en2.AssertFailure(typeof(InvalidOperationException), 1, 2, 3, 4, 5);
});
for (var i = 1; i <= 5; i++)
{
await push.Next(i);
}
await push.Error(new InvalidOperationException());
await task1;
await task2;
}
public async void Unbounded_No_Consumers()
{
var push = new ReplayAsyncEnumerable <int>();
for (var i = 1; i <= 5; i++)
{
await push.Next(i);
}
await push.Complete();
await push.AssertResult(1, 2, 3, 4, 5);
await push.AssertResult(1, 2, 3, 4, 5);
}
public async void Unbounded_No_Consumers_Error()
{
var push = new ReplayAsyncEnumerable <int>();
for (var i = 1; i <= 5; i++)
{
await push.Next(i);
}
await push.Error(new InvalidOperationException());
await push.AssertFailure(typeof(InvalidOperationException), 1, 2, 3, 4, 5);
await push.AssertFailure(typeof(InvalidOperationException), 1, 2, 3, 4, 5);
}
public async void TimedSized_No_Consumers_Error()
{
var push = new ReplayAsyncEnumerable <int>(10, TimeSpan.FromHours(1));
for (var i = 1; i <= 5; i++)
{
await push.Next(i);
}
await push.Error(new InvalidOperationException());
await push.AssertFailure(typeof(InvalidOperationException), 1, 2, 3, 4, 5);
await push.AssertFailure(typeof(InvalidOperationException), 1, 2, 3, 4, 5);
}
public async void TimedSized_No_Consumers()
{
var push = new ReplayAsyncEnumerable <int>(10, TimeSpan.FromHours(1));
for (var i = 1; i <= 5; i++)
{
await push.Next(i);
}
await push.Complete();
await push.AssertResult(1, 2, 3, 4, 5);
await push.AssertResult(1, 2, 3, 4, 5);
}
public async void HasConsumers()
{
var push = new ReplayAsyncEnumerable <int>();
Assert.False(push.HasConsumers);
var en = push.GetAsyncEnumerator();
Assert.True(push.HasConsumers);
await en.DisposeAsync();
Assert.False(push.HasConsumers);
}
/// <summary>
/// Source stream will be cached for multiple enumerations of later consumers
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="source"></param>
/// <param name="maxSize">max Size of Queue, otherwise unbounded</param>
/// <param name="cancellationToken"></param>
/// <returns></returns>
public static IAsyncEnumerable <T> ToReplayQueue <T>(this IAsyncEnumerable <T> source, int maxSize,
CancellationToken cancellationToken = default)
{
return(ToReplayQueueImpl().HandleInDispatcher(cancellationToken));
IAsyncEnumerable <T> ToReplayQueueImpl()
{
var queue = new ReplayAsyncEnumerable <T>(maxSize);
FillQueue(source, queue, cancellationToken);
return(queue);
}
}
public async void Unbounded_Take()
{
var push = new ReplayAsyncEnumerable <int>();
var t1 = push.Take(1).AssertResult(1);
var t2 = push.Take(2).AssertResult(1, 2);
await push.Next(1);
await push.Next(2);
await t1;
await t2;
}
public async void SizedTimed_Long()
{
const long n = 1_000_000;
var push = new ReplayAsyncEnumerable <long>(10, TimeSpan.FromHours(1));
var t = push
.Reduce((a, b) => a + b)
.AssertResult(n * (n + 1) / 2);
for (var i = 1; i <= n; i++)
{
await push.Next(i);
}
await push.Complete();
await t;
}
public IAsyncEnumerator <TResult> GetAsyncEnumerator()
{
var subject = new ReplayAsyncEnumerable <TSource>();
IAsyncEnumerable <TResult> result;
try
{
result = _func(subject);
}
catch (Exception ex)
{
return(new Error <TResult> .ErrorEnumerator(ex));
}
var en = new MulticastEnumerator <TSource, TResult>(_source.GetAsyncEnumerator(), subject, result.GetAsyncEnumerator());
return(en);
}
public IAsyncEnumerator <TResult> GetAsyncEnumerator(CancellationToken cancellationToken)
{
var subject = new ReplayAsyncEnumerable <TSource>();
IAsyncEnumerable <TResult> result;
try
{
result = _func(subject);
}
catch (Exception ex)
{
return(new Error <TResult> .ErrorEnumerator(ex));
}
var cts = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken);
var en = new MulticastEnumerator <TSource, TResult>(_source.GetAsyncEnumerator(cts.Token), subject, result.GetAsyncEnumerator(cancellationToken), cts);
return(en);
}
public async void Unbounded_One_Consumer_Error()
{
var push = new ReplayAsyncEnumerable <int>();
var en1 = push.GetAsyncEnumerator();
var task1 = Task.Run(async() =>
{
await en1.AssertFailure(typeof(InvalidOperationException), 1, 2, 3, 4, 5);
});
for (var i = 1; i <= 5; i++)
{
await push.Next(i);
}
await push.Error(new InvalidOperationException());
await task1;
}
public async void TimedSized_One_Consumer()
{
var push = new ReplayAsyncEnumerable <int>(10, TimeSpan.FromHours(1));
var en1 = push.GetAsyncEnumerator();
var task1 = Task.Run(async() =>
{
await en1.AssertResult(1, 2, 3, 4, 5);
});
for (var i = 1; i <= 5; i++)
{
await push.Next(i);
}
await push.Complete();
await task1;
}
public async void TimedSized_Bounded_1_Normal()
{
var push = new ReplayAsyncEnumerable <int>(1, TimeSpan.FromHours(1));
await push.Next(1);
await push.Next(2);
var t1 = push.AssertResult(2, 3, 4, 5);
await push.Next(3);
await push.Next(4);
await push.Next(5);
await push.Complete();
await t1;
await push.AssertResult(5);
}
public async void TimedSized_Long_Halfway()
{
const long n = 1_000_000;
var push = new ReplayAsyncEnumerable <long>((int)n, TimeSpan.FromHours(1));
var t = default(ValueTask);
for (var i = 1; i <= n; i++)
{
await push.Next(i);
if (i * 2 == n)
{
t = push
.Reduce((a, b) => a + b)
.AssertResult(n * (n + 1) / 2);
}
}
await push.Complete();
await t;
}
public async void Sized_Bounded_2_Normal()
{
var push = new ReplayAsyncEnumerable <int>(2);
await push.Next(1);
await push.Next(2);
await push.Next(3);
var t1 = push.AssertResult(2, 3, 4, 5);
await push.Next(4);
await push.Next(5);
await push.Complete();
await t1;
await push.AssertResult(4, 5);
}
public async void Timed_Bounded_1_Normal()
{
var timeNow = new [] { 0L };
var push = new ReplayAsyncEnumerable <int>(10, TimeSpan.FromMilliseconds(100), () => timeNow[0]);
await push.Next(1);
timeNow[0] += 100;
await push.Next(2);
var t1 = push.AssertResult(2, 3, 4, 5);
timeNow[0] += 100;
await push.Next(3);
timeNow[0] += 100;
await push.Next(4);
timeNow[0] += 100;
await push.Next(5);
await push.Complete();
await t1;
await push.AssertResult(5);
timeNow[0] += 100;
await push.AssertResult();
}
public async void Unbounded_One_Consumer()
{
var push = new ReplayAsyncEnumerable <int>();
var en1 = push.GetAsyncEnumerator(default);