Better app call test options.

[Del-S]

So is there an option to have Call as an interface and have Actual implementation and Test implementation? Actual would work as the Call works currently. Test implementation would not actually create a call but it would only set proper states and have convinient functions so the apps using this lib could be easily tested.

Test functions could be for example:

• targetCanceledCall - which would send CallState.Done and SocketMethod.BYE as a real call does.
• targetAcceptedCall - which would send CallState.Active, SocketMethod.Answer or both.

This would allow app developer to test the call before it can be tested on production.

That would also allow to have the Call as non-nullable. It is kinda weird to have Call nullable in production just because of testing. This adds additional edge cases to the app.