拍卖行：增加测试接口和用例

shared/db/Lot.ts

@@ -102,6 +102,11 @@ export default class Lot extends BaseModel {
         const results: LotType[] = await LotModel.find({ serverId, 'bidRoles.roleId': roleId }).select('-_id -__v').limit(count).lean();
         return results;
     }
+
+    public static async updateLotStage(code: string, auctionStage: number) {
+        const result: LotType = await LotModel.findOneAndUpdate({ code }, { auctionStage }).select('-_id -__v').lean();
+        return result;
+    }
 }
 
 export const LotModel = getModelForClass(Lot);