diff --git a/scripts/seed_data.py b/scripts/seed_data.py
index f7c035f..4db4c1c 100644
--- a/scripts/seed_data.py
+++ b/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:
diff --git a/tests/unit/test_seed_data.py b/tests/unit/test_seed_data.py
new file mode 100644
index 0000000..87094b9
--- /dev/null
+++ b/tests/unit/test_seed_data.py
@@ -0,0 +1,46 @@
+import argparse
+from unittest import mock
+
+import scripts.seed_data as seed_data
+from scripts.seed_data import DatabaseConfig
+
+
+def test_run_with_namespace_handles_missing_theme_flag_without_actions() -> None:
+    args = argparse.Namespace(currencies=False, units=False, defaults=False)
+    config = mock.create_autospec(DatabaseConfig)
+    config.application_dsn.return_value = "postgresql://example"
+
+    with (
+        mock.patch("scripts.seed_data._configure_logging") as configure_logging,
+        mock.patch("scripts.seed_data.psycopg2.connect") as connect_mock,
+        mock.patch.object(seed_data.logger, "info") as info_mock,
+    ):
+        seed_data.run_with_namespace(args, config=config)
+
+    configure_logging.assert_called_once()
+    connect_mock.assert_not_called()
+    info_mock.assert_called_with("No seeding options provided; exiting")
+
+
+def test_run_with_namespace_seeds_defaults_without_theme_flag() -> None:
+    args = argparse.Namespace(
+        currencies=False, units=False, defaults=True, dry_run=False)
+    config = mock.create_autospec(DatabaseConfig)
+    config.application_dsn.return_value = "postgresql://example"
+
+    connection_mock = mock.MagicMock()
+    cursor_context = mock.MagicMock()
+    cursor_mock = mock.MagicMock()
+    connection_mock.__enter__.return_value = connection_mock
+    connection_mock.cursor.return_value = cursor_context
+    cursor_context.__enter__.return_value = cursor_mock
+
+    with (
+        mock.patch("scripts.seed_data._configure_logging"),
+        mock.patch("scripts.seed_data.psycopg2.connect", return_value=connection_mock) as connect_mock,
+        mock.patch("scripts.seed_data._seed_defaults") as seed_defaults,
+    ):
+        seed_data.run_with_namespace(args, config=config)
+
+    connect_mock.assert_called_once_with(config.application_dsn())
+    seed_defaults.assert_called_once_with(cursor_mock, dry_run=False)