app-process.md
In webfakes: Fake Web Apps for HTTP Testing

error if cannot start

Code
  new_app_process(app, process_timeout = 100, start = TRUE)
Condition
  Error in `self$start()`:
  ! webfakes app subprocess did not start :(

Code
  new_app_process(app, start = TRUE)
Condition
  Error:
  ! failed to start webfakes app process: in callr subprocess.
  Caused by error:
  ! oops

Code
  new_app_process(app, start = TRUE)
Condition
  Error in `self$start()`:
  ! Unexpected message from webfakes app subprocess. Report a bug please.