"""客户服务字典规范化与 CRUD 辅助。"""
import unittest
from unittest.mock import MagicMock

from app.crud.customer_service_dict import ensure_dict_value
from app.services.sample_customer_service_register import normalize_dict_value


class TestNormalizeDictValue(unittest.TestCase):
    def test_strips_whitespace(self):
        self.assertEqual(normalize_dict_value("  已发  "), "已发")

    def test_empty_string_returns_none(self):
        self.assertIsNone(normalize_dict_value(""))

    def test_whitespace_only_returns_none(self):
        self.assertIsNone(normalize_dict_value("   "))

    def test_none_returns_none(self):
        self.assertIsNone(normalize_dict_value(None))


class TestEnsureDictValue(unittest.TestCase):
    def test_returns_none_for_blank_value(self):
        db = MagicMock()
        self.assertIsNone(
            ensure_dict_value(db, "zkxw", "sms_send_status", "  ", user_id="u1")
        )
        db.add.assert_not_called()

    def test_returns_existing_without_insert(self):
        db = MagicMock()
        existing = MagicMock()
        existing.dict_value = "已发"
        db.query.return_value.filter.return_value.first.return_value = existing

        result = ensure_dict_value(
            db, "zkxw", "sms_send_status", "  已发  ", user_id="u1"
        )

        self.assertEqual(result, "已发")
        db.add.assert_not_called()
        db.flush.assert_not_called()