Use local_mocking_bindings from {testthat} or how change function bindings with {shinytest2}

[Fideldue]

{Testthat} now also includes the possibility to mock functions via with_mocking_bindings/local_mocking_bindings.
This doesn't work with {shinytest2} when trying to setup a mock before calling AppDriver$new(), the mocked function is still returning the original values. Is this connected to #301 and in general not possible currently?

If yes, is there a workaround to change some function bindings for AppDriver?

Basically, I want to mock external data connectors (e.g. database connections or directly the data via fixtures), which are used by the application without adding some conditional test files/function outputs in the productive code.

Happy to hear I missed something or open to discuss any ideas to contribute.

[Fideldue]

Any news or ideas on that?