Tests - Update test_layer_measurements.py to factory boy setup

[jomey]

Change the api/test_layer_measurements.py tests to follow the new test infrastructure introduced with PR #156

[jomey]

And remove the 'old' db setup:

• db_connection.py
• db_setup.py

[aaarendt]

Testing api.py for values greater than or less than returns a type mismatch, due to #159.

I tried this fix at line 158:

        key = k.split("_greater_equal")[0]
        qry = qry.filter(
        cast(getattr(qry_model, key), Numeric) >= v
        )

Which breaks point measurement tests on date ranges.

Looking for ways to cast the cls.MODEL.value as numeric upstream of this, or should we include additional logic to narrow in on this specific case?

[aaarendt]

And remove the 'old' db setup:

• db_connection.py
• db_setup.py

Noting that test_conversions.py depends on db_setup.py and has a sequence of conversion tests currently being skipped. So this appears to be a larger chunk of work to redo those tests under our new approach?

[jomey]

And remove the 'old' db setup:

• db_connection.py
• db_setup.py

Noting that test_conversions.py depends on db_setup.py and has a sequence of conversion tests currently being skipped. So this appears to be a larger chunk of work to redo those tests under our new approach?

These tests were marked as skipped before the test setup restructure and were marked as such when the DB and API framework were broken up into two repositories. I suggest to simply remove the dependency to DDSetup since they need major refactoring. We should log a separate ticket for this and note that in the test as an open TODO

[aaarendt]

@jomey and I decided to delete the old DBSetup infrastructure and just retain the calls to the credentials file as needed to configure the factories. There is additional work to redo the functions and conversions tests (see #173 and #174).