[feat]:[FL-153][系统参数管理页面一致性优化]

Co-authored-by: multica-agent <github@multica.ai>

api/tests/test_system_param_service.py

@@ -0,0 +1,87 @@
+from __future__ import annotations
+
+import os
+import unittest
+
+os.environ.setdefault("DATABASE_URL", "sqlite+pysqlite:///:memory:")
+
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker
+from sqlalchemy.pool import StaticPool
+
+from api.app import models  # noqa: F401
+from api.app.core.database import Base
+from api.app.models.system_param import SystemParam
+from api.app.services.system_param_service import list_system_params
+
+
+class SystemParamServiceTest(unittest.TestCase):
+    def setUp(self) -> None:
+        self.engine = create_engine(
+            "sqlite+pysqlite://",
+            connect_args={"check_same_thread": False},
+            poolclass=StaticPool,
+        )
+        self.SessionLocal = sessionmaker(
+            bind=self.engine,
+            autocommit=False,
+            autoflush=False,
+            expire_on_commit=False,
+        )
+        Base.metadata.create_all(bind=self.engine)
+        self.session = self.SessionLocal()
+
+    def tearDown(self) -> None:
+        self.session.close()
+        Base.metadata.drop_all(bind=self.engine)
+        self.engine.dispose()
+
+    def test_list_system_params_applies_limit_and_offset(self) -> None:
+        for index in range(5):
+            self.session.add(
+                SystemParam(
+                    param_key=f"param_{index}",
+                    param_name=f"Param {index}",
+                    param_value=f"value-{index}",
+                    description=f"description-{index}",
+                    status="enabled",
+                )
+            )
+        self.session.commit()
+
+        page = list_system_params(
+            self.session,
+            limit=2,
+            offset=1,
+            keyword=None,
+            status_filter=None,
+        )
+
+        self.assertEqual(page.total, 5)
+        self.assertEqual(len(page.items), 2)
+
+    def test_list_system_params_filters_before_paginating(self) -> None:
+        self.session.add_all(
+            [
+                SystemParam(param_key="enabled_first", param_name="Enabled First", status="enabled"),
+                SystemParam(param_key="disabled_first", param_name="Disabled First", status="disabled"),
+                SystemParam(param_key="enabled_second", param_name="Enabled Second", status="enabled"),
+            ]
+        )
+        self.session.commit()
+
+        page = list_system_params(
+            self.session,
+            limit=1,
+            offset=0,
+            keyword="enabled",
+            status_filter="enabled",
+        )
+
+        self.assertEqual(page.total, 2)
+        self.assertEqual(len(page.items), 1)
+        self.assertEqual(page.items[0].status, "enabled")
+
+
+if __name__ == "__main__":
+    unittest.main()