feat: configure tests workflow

[SRWieZ]

The new .github/workflows/tests.yaml workflow supports unit and feature tests, using Composer dependency caching and an in-memory SQLite database. It compiles assets and generates an application key before test execution.

The composer.json now includes doctrine/dbal (version ^3.9) because otherwise it would not migrate on my machine.

[SRWieZ]

@simonhamp @steven-fox any idea why the tests don't pass?

I tried passing default values to STRIPE_* keys in my .env, and it still doesn't pass on my Mac.

[steven-fox]

@simonhamp @steven-fox any idea why the tests don't pass?

I tried passing default values to STRIPE_* keys in my .env, and it still doesn't pass on my Mac.

I think you're on the right issue - this is probably a env key problem (anystack keys included).

Let me pull this branch and see if I can tweak things to get it working in a sensible manner. The tests were admittedly done with haste as the priority, so taking a moment to set things up differently is probably warranted.

[steven-fox]

@SRWieZ I added testing env vars to phpunit.xml and the workflow is now working correctly.

Thanks!