I replaced the custom test setup with the test runner. This should make migrating to mikroorm 6 a lot easier once we do it.
There are few more modules to be done, but I thought the PR is super big already so we can tackle them separately.
Note that there are no or very little test changes, it is mostly the setup around the tests.
Few things to keep in mind:
1. You need to set MEDUSA_FF_MEDUSA_V2 to true before running the tests to run with the v2 API
2. You can use the `breaking` function to differentiate between v1 and v2 differences. This can help us identify what was breaking pretty quickly afterwards
3. You will need to run specific tests for now instead of all if you want to target v2. I think that's fine though, as we don't really need these to run on every PR until we have feature parity (and by then, all tests would be both v1 and v2 compatible)
**note: Adrien**
- add a new way to load modules only to run their loaders comparable to the way to run the migrations only
- improve tests runner to cleanup the data properly as well as re running all loaders and core defaults
Co-authored-by: Adrien de Peretti <25098370+adrien2p@users.noreply.github.com>
**What**
Add missing support for updating countries on the POST /admin/regions/:id route.
Furthermore, the PR refactors how the normalization and validation was handled in both create and update scenarios.
Finally, the PR adds a unique index on the country entity, which ensures at the DB level that we cannot have a duplicate country in the DB for a single region.
**What**
Add `POST /admin/regions`
Add `POST /admin/regions/:id`
Add `DELETE /admin/regions/:id`
All are added for v2 using API Routes and workflows.
In follow-up PRs, I will add support for passing countries in update and create.
Update: First follow-up PR is #6372
**What**
> [!NOTE]
> I can see this pr becoming huge, so I d like to get this partial one merged 👍
- Fixes shared connection usage (mikro orm compare the instance to its own package and therefore was resulting in not trully reusing the provided connection leading to exhausting the connection pool as multiple connections was created and end up not being all destroyed properly under the hood, discovered in my integration tests)
- Create shipping options method implementation
- DTO's definition and service interface update
- integration tests
- Re work of the indexes with new util update
- Test runner utils to remove a big chunk of the boilerplate of the packages integrations
FIXES CORE-1742
