When running tests, how to ensure app is completely shutdown once tests have completed?

[stemcc]

For example, in the case of a loco app which interfaces with a lot of C code that requires a start up step and a shutdown step.

Right now when testing, the app bootstraps the environment using boot_test and runs the tests but after the tests have completed, the on_shutdown hook is never called, which is where I do my teardown of the external services.