only spin up postgres fixture when env isn't set

tests/conftest.py

@@ -2,15 +2,20 @@
 from os import environ
 
 from unittest import TestCase
+from pytest_alembic import Config
 from pytest_mock_resources import create_postgres_fixture
 from sqlalchemy import create_engine
 
 from sqlalchemy.orm import Session
-from sqlalchemy.orm import declarative_base
-from gloss.models import Definition, Interaction
+from gloss.models import Definition, Interaction, Base
 from gloss.bot import Bot
 
-pg = create_postgres_fixture(declarative_base())
+if environ.get('TEST_DATABASE_URL'):
+ @pytest.fixture
+ def pg():
+ pass
+else:
+ pg = create_postgres_fixture(Base)
 
 @pytest.fixture
 def alembic_engine(pg):
@@ -24,21 +29,19 @@ def alembic_engine(pg):
  return create_engine(db_url)
  return pg
 
-# @pytest.fixture
-# def alembic_config(alembic_engine):
-# """Override this fixture to configure the exact alembic context setup required.
-# """
-# return Config(
-# config_options={
-# 'sqlalchemy.url': alembic_engine.url.render_as_string(hide_password=False)
-# }
-# )
-
 @pytest.fixture
-def db_session(alembic_engine, alembic_runner):
+def alembic_config(alembic_engine):
+ """Override this fixture to configure the exact alembic context setup required.
+ """
  environ['DATABASE_URL'] = alembic_engine.url.render_as_string(hide_password=False)
- alembic_runner.migrate_up_to('heads')
+ return Config(
+ config_options={
+ 'sqlalchemy.url': environ['DATABASE_URL']
+ }
+ )
 
+@pytest.fixture
+def db_session(alembic_engine, alembic_runner):
  session = Session(alembic_engine)
  session.query(Interaction).delete()
  session.query(Definition).delete()