Making FakeModel part of the library

[teal-clover]

Noticed that you have FakeModel class in tests. Are there any plans to make it available in the library?
It would make writing integration tests that involve agents much easier.

[seratch]

Thanks for writing in. We don't plan to include FakeModel in the package for now, but we may consider adding some useful tools for unit testing in the future (no concrete plan at this moment; so I cannot tell when to come).

The FakeModel code is relatively simple and you won't need to update it a lot even in the future. So, please copy the code and include it in your project for now.

[teal-clover]

I have a bit of a follow-up.
I need only to test a few tools and cover the events inside async for event in runner.stream_events() loop. A member of my team is a bit skeptical about the reasons of introducing FakeModel and proposes instead to test tools separately and to mock the loop.

How do you recommend proceeding with writing tests for apps that use agents?