UseFakeTimers and issue with Async library

[danielkcz]

This is coming from here ... caolan/async#609

I have tried to explain that issue is not anything that Sinon can solve. Am I wrong or is there any other option?

[cjohansen]

You can do useFakeTimers(0, "setTimeout", "clearTimeout") to specify which functions to fake. Default is all of them. However, I agree that async could avoid this on behalf of their users with var tick = setImmediate; somewhere in their initialization code.

[cjohansen]

...and the same with setTimeout, because for scheduling issues, they never want to use anything other than what the environment provides. I do also agree that it doesn't make much sense for a library like async to actively distrust the global environment. However, this is a very common situation, and caching the needed properties seems like a pragmatic approach in my opinion.

[danielkcz]

Thanks, I have missed these options, perfect.

Having this option is half of the solution thou. As I said in that thread and @rlidwka somewhat denies it, for people who doesn't know where to look, they could hardly figure out that Async is using setImmediate in such weird way.