Fifteen years writing Drupal code and yet I have never written unit tests. I have recently posted a couple core patches which require tests to be written for them - so good time to learn how to write PHPUnit tests.
I have a test environmnet set up and am able to successfully run core unit tests. I need to extend these tests which I can see is not very difficult; but I need to run against the "test db". I can see core Views test modules like views_test_config and views_test_data which have everything I need - but I cannot enable them (manually so I can verify what my test content is).
Is there a way to get a copy of the D9 default test database that is used for running core (kernel) tests against? Or, alternatively, some way to enable these modules?