完善审计日志展示与导出权限

backend/tests/test_study_delete.py

@@ -8,12 +8,14 @@ from app.crud import study as study_crud
 class _FakeDb:
     def __init__(self):
         self.tables = []
+        self.operations = []
         self.committed = False
 
     async def execute(self, stmt):
         table = getattr(getattr(stmt, "table", None), "name", None)
         if table:
             self.tables.append(table)
+            self.operations.append((getattr(stmt, "__visit_name__", ""), table))
 
     async def commit(self):
         self.committed = True
@@ -29,3 +31,13 @@ async def test_delete_study_removes_contract_fee_payments_before_contract_fees()
     assert "contract_fees" in db.tables
     assert db.tables.index("contract_fee_payments") < db.tables.index("contract_fees")
     assert db.committed is True
+
+
+@pytest.mark.asyncio
+async def test_delete_study_preserves_audit_logs():
+    db = _FakeDb()
+
+    await study_crud.delete(db, uuid.uuid4())
+
+    assert ("delete", "audit_logs") not in db.operations
+    assert ("update", "audit_logs") in db.operations