I have following question about code banking. There's some small tests, that uses one big library. So, how can I put this library to different code banks? Ofc, I can include this tests right in library project, but are there any other solutions?
I now understand what you're asking.
You should be able to specify the inclusion of a library file, without having to specify an explicit bank for that library.
The default for the runtime libraries is no specific bank, so the control of such things must be there.
My project(s) tended to only a minimal amount of library functions, so I have not seen what you are saying.
Is that done by specifying the <default> bank under properties for the group containing the library?
If push-comes-to-shove you could consider using the LIB tool and split your libraries into smaller units.