新增完善测试模板

tests/test_db_smoke.py

@@ -0,0 +1,41 @@
+# -*- coding: utf-8 -*-
+"""publish_logs 表：init 幂等、写入与查询（全程隔离数据目录）。"""
+from __future__ import annotations
+
+import unittest
+
+from _support import IsolatedDataRoot
+
+
+class TestDbSmoke(unittest.TestCase):
+    def test_init_db_idempotent_and_crud_smoke(self) -> None:
+        with IsolatedDataRoot():
+            from db.connection import init_db
+            from db import publish_logs_repository as plr
+
+            init_db()
+            init_db()
+
+            new_id = plr.save_publish_log(
+                account_id="acc-1",
+                article_id=42,
+                article_title="t",
+                status="ok",
+                error_msg=None,
+            )
+            self.assertIsInstance(new_id, int)
+            self.assertGreater(new_id, 0)
+
+            rows = plr.list_publish_logs(limit=10)
+            self.assertTrue(any(r[0] == new_id for r in rows))
+
+            row = plr.get_publish_log_by_id(new_id)
+            self.assertIsNotNone(row)
+            self.assertEqual(int(row[0]), new_id)
+
+            missing = plr.get_publish_log_by_id(999_999)
+            self.assertIsNone(missing)
+
+
+if __name__ == "__main__":
+    unittest.main()