feat: db pytest fixtures

tests/conftest.py

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+import pytest
+from sqlalchemy import create_engine
+from sqlalchemy.orm import Session, sessionmaker
+
+# region sqlalchemy fixtures
+# from https://medium.com/@vittorio.camisa/agile-database-integration-tests-with-python-sqlalchemy-and-factory-boy-6824e8fe33a1
+engine = create_engine("sqlite:///:memory:")
+Session = sessionmaker()
+
+
+@pytest.fixture(scope="module")
+def db_conn():
+    connection = engine.connect()
+    yield connection
+    connection.close()
+
+
+@pytest.fixture(scope="function")
+def db_session(db_conn):
+    transaction = db_conn.begin()
+    session = Session(bind=db_conn)
+    yield session
+    session.close()
+    transaction.rollback()
+
+
+# endregion