feat: pick up logic of api - stock_record_change.post to stock - services module

stock/tests.py

@@ -371,6 +371,72 @@ class MakeStockChangeCompletedTestCase(StockServicesTestCase):
         # 验证记录状态
         self.stock_change_in.refresh_from_db()
         self.assertTrue(self.stock_change_in.is_finished)
+
+
+class CreateStockChangeRecordWithDetailsTestCase(StockServicesTestCase):
+    """测试 create_stock_change_record_with_details 服务"""
+
+    def setUp(self):
+        super().setUp()
+        self.products_payload = [
+            {'product': self.product_fabric_a.id, 'quantity': [Decimal('10.00'), Decimal('20.50')]},
+            {'product': self.product_fabric_b.id, 'quantity': [Decimal('5.00')]}
+        ]
+
+    def test_create_record_success(self):
+        """创建库存变动记录并返回所有明细"""
+        record, details, created_count = services.create_stock_change_record_with_details(
+            merchant=self.merchant,
+            created_by=None,
+            type=models.StockChangeTypeEnum.ADD,
+            warehouse_id=self.warehouse_main.id,
+            source_type=models.StockChangeSourceEnum.PURCHASE,
+            source_id=self.purchase_order.id,
+            products=self.products_payload,
+        )
+
+        self.assertEqual(record.details.count(), 3)
+        self.assertEqual(len(details), 3)
+        self.assertEqual(created_count, 3)
+        self.assertEqual(record.merchant, self.merchant)
+        self.assertEqual(record.warehouse, self.warehouse_main)
+        self.assertCountEqual(
+            [Decimal('10.00'), Decimal('20.50'), Decimal('5.00')],
+            [detail.quantity for detail in details]
+        )
+
+    def test_auto_complete_triggers_completion(self):
+        """商户开启自动确认时会调用完成逻辑"""
+        self.merchant.auto_complete_stock_change = True
+        self.merchant.save()
+
+        with patch('stock.services.make_stock_change_completed') as mock_complete:
+            services.create_stock_change_record_with_details(
+                merchant=self.merchant,
+                created_by=None,
+                type=models.StockChangeTypeEnum.ADD,
+                warehouse_id=self.warehouse_main.id,
+                source_type=models.StockChangeSourceEnum.PURCHASE,
+                source_id=self.purchase_order.id,
+                products=self.products_payload,
+            )
+
+        mock_complete.assert_called_once()
+
+    def test_invalid_product_raises_error(self):
+        """无效的产品ID会触发 ValueError"""
+        products = [{'product': 99999, 'quantity': [Decimal('1.00')]}]
+
+        with self.assertRaises(ValueError):
+            services.create_stock_change_record_with_details(
+                merchant=self.merchant,
+                created_by=None,
+                type=models.StockChangeTypeEnum.ADD,
+                warehouse_id=self.warehouse_main.id,
+                source_type=models.StockChangeSourceEnum.PURCHASE,
+                source_id=self.purchase_order.id,
+                products=products,
+            )
     
     def test_complete_outbound_record(self):
         """测试完成出库记录"""