How to use external postgresql database instead of embedded h2 for JUnit tests (development)

[jonbally]

Hi,

I am currently investigating an issue I observed with the OsvDownloadTask (will create an Issue in this repo when I have more concrete information). I wanted to replicate the scenario as best as possible and thus also use an external postgresql database instead of the embedded h2 database while running a JUnit test within IntelliJ.
I have tried various ways to overwrite the usage of the default h2 database (Editing application.properties, setting the ALPINE_DATABASE_ env variables as JVM options in the run config for the test) but it seems like the test still uses h2.

How can I achieve what I described above?

Edit: I found out why the tests in PersistenceCapableTest / OsvDownloadTaskTest default to h2: init() calls the alpine method Config.enableUnitTests() which in turn means a default h2 PersistanceManagerFactory is used.
Any pointers to how I can create a kind of integration test that uses postgresql? I would like to have a quickly reproducible way of running an OsvDownloadTask with a postgresql datastore, without much else happening. Does my approach make sense?