public async Task When_exception_occurs_reading_head_position_then_polling_should_continue()
{
int readHeadCount = 0;
Task <long> ReadHeadPosition(CancellationToken _)
{
readHeadCount++;
if (readHeadCount % 2 == 0)
{
throw new Exception("oops");
}
return(Task.FromResult((long)readHeadCount));
}
using (var notifier = new PollingStreamStoreNotifier(ReadHeadPosition, 10))
{
int received = 0;
var tcs = new TaskCompletionSource <Unit>();
notifier.Subscribe(_ =>
{
received++;
if (received > 5)
{
tcs.SetResult(Unit.Default);
}
});
await tcs.Task.WithTimeout();
}
}
public static CreateStreamStoreNotifier CreateStreamStoreNotifier(int interval = 1000)
{
return(async readonlyStreamStore =>
{
var poller = new PollingStreamStoreNotifier(readonlyStreamStore, interval);
await poller.Start().NotOnCapturedContext();
return poller;
});
}