Unit testable LINQ extensions

[HarshaliRaka]

I am using LINQ extensions MaxAsync and CountAsync in my code. Is there a way for me to Unit test it?
I see comments here and here which say it is very difficult to mock extensions. If you can help with any other way of doing it, it will be really helpful.

Thanks!

[j82w]

The easiest solution is create a wrapper as explained in this issue you already have linked.

The other solution is mocking Container.GetItemLinqQueryable and return a List . When you call CountAsync it will just call the List.Count method. The downside to this is it won't support any of the inner linq extensions like IsDefined.