Test env variables.

test/conftest.py

@@ -93,7 +93,7 @@ def data_config_filename(configuration_data) -> str:
 def db_uri():
     """Provide the database uri configuration to run the migration on."""
 
-    return os.environ.get("DATABASE_URI_TEST", "postgresql://gso:gos@localhost/gso-test-db")
+    return os.environ.get("DATABASE_URI_TEST")
 
 
 def run_migrations(db_uri: str) -> None: