feat(box): include item total quantity

tests/test_box_api.py

@@ -16,7 +16,11 @@ def test_box_info_success(client: TestClient):
     assert "work_order_no" in data
     assert data["work_order_no"] is None or isinstance(data["work_order_no"], str)
     assert data["quantity"] == 80
+    assert "current_zongpai_boxes" in data
     assert "existing_boxes" in data
+    for box in data["existing_boxes"]:
+        for item in box["items"]:
+            assert "box_item_id" in item
     assert "max_box_no" in data
     assert data["suggested_box_no"] == data["max_box_no"] + 1
 
@@ -78,3 +82,126 @@ def test_box_save_zongpai_not_found(client: TestClient):
     )
     assert resp.status_code == 404
     assert resp.json()["error_code"] == "ZONGPAI_NOT_FOUND"
+
+
+def test_box_save_many_to_one_appends_different_zongpais(client: TestClient):
+    """多码一箱：同一排产号同一箱号可追加不同总排号。"""
+    box_no = 901
+    first = client.post(
+        "/CargoTrace/box",
+        json={
+            "zongpai_no": "26BW0011",
+            "box_no": box_no,
+            "quantity": 10,
+            "box_mode": "many-to-one",
+        },
+    )
+    assert first.status_code == 200
+    assert first.json()["box_item_id"] is not None
+
+    second = client.post(
+        "/CargoTrace/box",
+        json={
+            "zongpai_no": "26BW0012",
+            "box_no": box_no,
+            "quantity": 8,
+            "box_mode": "many-to-one",
+        },
+    )
+    assert second.status_code == 200
+    assert second.json()["box_no"] == box_no
+    assert second.json()["zongpai_no"] == "26BW0012"
+
+    info = client.get("/CargoTrace/box/info", params={"zongpai_no": "26BW0011"})
+    assert info.status_code == 200
+    target_box = next(
+        box for box in info.json()["existing_boxes"] if box["box_no"] == box_no
+    )
+    assert {item["zongpai_no"] for item in target_box["items"]} == {
+        "26BW0011",
+        "26BW0012",
+    }
+    for item in target_box["items"]:
+        assert "work_order_no" in item
+        assert isinstance(item["total_quantity"], int)
+
+
+def test_box_save_many_to_one_duplicate_same_zongpai(client: TestClient):
+    """多码一箱：同箱同总排重复录入返回 DUPLICATE_BOX_NO。"""
+    box_no = 902
+    first = client.post(
+        "/CargoTrace/box",
+        json={
+            "zongpai_no": "26BW0011",
+            "box_no": box_no,
+            "quantity": 10,
+            "box_mode": "many-to-one",
+        },
+    )
+    assert first.status_code == 200
+
+    duplicate = client.post(
+        "/CargoTrace/box",
+        json={
+            "zongpai_no": "26BW0011",
+            "box_no": box_no,
+            "quantity": 5,
+            "box_mode": "many-to-one",
+        },
+    )
+    assert duplicate.status_code == 409
+    assert duplicate.json()["error_code"] == "DUPLICATE_BOX_NO"
+
+
+def test_box_update_same_box_no_does_not_conflict(client: TestClient):
+    """PATCH 原箱号未变时，应排除当前 box_item_id，避免误判重复。"""
+    box_no = 903
+    created = client.post(
+        "/CargoTrace/box",
+        json={
+            "zongpai_no": "26BW0011",
+            "box_no": box_no,
+            "quantity": 10,
+            "box_mode": "one-to-many",
+        },
+    )
+    assert created.status_code == 200
+    box_item_id = created.json()["box_item_id"]
+
+    updated = client.patch(
+        f"/CargoTrace/box/{box_item_id}",
+        json={"box_no": box_no, "quantity": 7, "box_mode": "one-to-many"},
+    )
+    assert updated.status_code == 200
+    assert updated.json()["quantity"] == 7
+
+
+def test_box_delete_removes_empty_box(client: TestClient):
+    """DELETE 删除最后一条明细后，同步清理空箱号。"""
+    box_no = 904
+    created = client.post(
+        "/CargoTrace/box",
+        json={
+            "zongpai_no": "26BW0011",
+            "box_no": box_no,
+            "quantity": 10,
+            "box_mode": "many-to-one",
+        },
+    )
+    assert created.status_code == 200
+    box_item_id = created.json()["box_item_id"]
+
+    deleted = client.delete(f"/CargoTrace/box/{box_item_id}")
+    assert deleted.status_code == 200
+    assert deleted.json() == {"box_item_id": box_item_id, "deleted": True}
+
+    recreated = client.post(
+        "/CargoTrace/box",
+        json={
+            "zongpai_no": "26BW0012",
+            "box_no": box_no,
+            "quantity": 8,
+            "box_mode": "one-to-many",
+        },
+    )
+    assert recreated.status_code == 200