Fix issue with PHPUnit test paths on linux

[devdot]

First of all, thank you @DumbergerL for all the work you've put in with 2.0! It's looking great!

It seems like calling PHPUnit fails (at least on Linux), because phpunit.xml still has the lowercase directory names instead of the ones you've changed in #165. Perhaps it didn't fail on Windows because directories there are often treated case-insensitive (I didn't validate that however). It's a good step to make tests PSR-4 compliant though!

I wondered why PHPUnit didn't fail in CI and saw that for some reason it doesn't throw an error in Github Actions, but it says "No tests executed!". Perhaps PHPUnit could be setup to fail when no tests are executed? https://github.com/5pm-HDH/churchtools-api/actions/runs/6744038583/job/18333071116

[devdot]

Seems like the integration CI is broken and I'm not sure why. It seems like it's looking in the right place for the injected .ini but the credentials are not there:

churchtools-api/tests/Integration/IntegrationTestData.php

Lines 11 to 15 in 04f7700

	class IntegrationTestData
	{
	private static $FILE_DIR = __DIR__ . '/integration-test-data.json';
	private static $CREDENTIALS_FILE = __DIR__ . '/integration.ini';

[DumbergerL]

I can't understand the behavior of the github-actions pipelines 100%. When I push commits to this PR, the credentials file obtained from the github secrets is empty. As soon as I push the commits to a new branch and create a fresh pr, the pipeline runs through and this PR also turns green.

I close this PR. All changes are continued on pr #186 .