init

tests/test_db_smoke.py

@@ -0,0 +1,37 @@
+# -*- coding: utf-8 -*-
+"""init_db：幂等创建元数据表，默认不建业务表。"""
+from __future__ import annotations
+
+import unittest
+
+from _support import IsolatedDataRoot
+
+
+class TestDbSmoke(unittest.TestCase):
+    def test_init_db_idempotent_metadata_only(self) -> None:
+        with IsolatedDataRoot():
+            from db.connection import get_conn, init_db
+            from db.display_metadata import METADATA_TABLES, iter_user_tables
+
+            init_db()
+            init_db()
+
+            conn = get_conn()
+            try:
+                cur = conn.cursor()
+                cur.execute(
+                    "SELECT name FROM sqlite_master WHERE type='table' AND name NOT LIKE 'sqlite_%'"
+                )
+                tables = {str(row[0]) for row in cur.fetchall()}
+                self.assertIn("_jiangchang_tables", tables)
+                self.assertIn("_jiangchang_columns", tables)
+                self.assertNotIn("task_logs", tables)
+                self.assertEqual(list(iter_user_tables(cur)), [])
+                leftover = tables - METADATA_TABLES
+                self.assertEqual(leftover, set())
+            finally:
+                conn.close()
+
+
+if __name__ == "__main__":
+    unittest.main()