fix: Enhance argument handling in seed data script and add unit tests

scripts/seed_data.py

@@ -135,24 +135,36 @@ def run_with_namespace(
     *,
     config: Optional[DatabaseConfig] = None,
 ) -> None:
+    if not hasattr(args, "verbose"):
+        args.verbose = 0
+    if not hasattr(args, "dry_run"):
+        args.dry_run = False
+
     _configure_logging(args)
 
-    if not any((args.currencies, args.units, args.theme, args.defaults)):
+    currencies = bool(getattr(args, "currencies", False))
+    units = bool(getattr(args, "units", False))
+    theme = bool(getattr(args, "theme", False))
+    defaults = bool(getattr(args, "defaults", False))
+    dry_run = bool(getattr(args, "dry_run", False))
+
+    if not any((currencies, units, theme, defaults)):
         logger.info("No seeding options provided; exiting")
         return
 
     config = config or DatabaseConfig.from_env()
+
     with psycopg2.connect(config.application_dsn()) as conn:
         conn.autocommit = True
         with conn.cursor() as cursor:
-            if args.currencies:
-                _seed_currencies(cursor, dry_run=args.dry_run)
-            if args.units:
-                _seed_units(cursor, dry_run=args.dry_run)
-            if args.theme:
-                _seed_theme(cursor, dry_run=args.dry_run)
-            if args.defaults:
-                _seed_defaults(cursor, dry_run=args.dry_run)
+            if currencies:
+                _seed_currencies(cursor, dry_run=dry_run)
+            if units:
+                _seed_units(cursor, dry_run=dry_run)
+            if theme:
+                _seed_theme(cursor, dry_run=dry_run)
+            if defaults:
+                _seed_defaults(cursor, dry_run=dry_run)
 
 
 def _seed_currencies(cursor, *, dry_run: bool) -> None: