This is in the email you asked about. In the old days I used `create_process` and `schedule_process` for this. For tests it's preferred to use `spawn_process`.

[create_process_definition](https://github.com/lukecampbell/coi-services/blob/dataprocessing/ion/services/cei/process_dispatcher_service.py#L220-221)
[create_process](https://github.com/lukecampbell/coi-services/blob/dataprocessing/ion/services/cei/process_dispatcher_service.py#L275-276)
[schedule_process](https://github.com/lukecampbell/coi-services/blob/dataprocessing/ion/services/cei/process_dispatcher_service.py#L299-300)

I've forgotten the subtleties of what each do but I know I used a combination of them to launch the process. That stuff goes in data process management though, not in the test.