Python使用自定义装饰器的示例详解

在Python自动化测试中,使用自定义的装饰器来给测试方法传递测试数据:

reader.py

import csv
import json

from openpyxl import load_workbook


from setting import DATA_DIR
from os import path

class Reader:
  @classmethod
  def read_excel(cls,xlname, min_row, max_row, min_col, max_col):
      xlname = path.join(DATA_DIR,xlname)
      data = []
      wb = load_workbook(xlname)
      ws = wb.active

      # 将选中区域转换为列表
      ls = list(ws.iter_rows(min_row=min_row, max_row=max_row, min_col=min_col, max_col=max_col))
      wb.save(xlname)

      for row in ls:
          data_row = []
          for col in row:
              data_row.append(col.value)
          data.append(data_row)

      wb.save(xlname)
      return data

  @classmethod
  def read_csv(cls, filename):
      file_name = path.join(DATA_DIR,filename)
      ls  = None
      with open(file=file_name,mode='r',encoding='utf-8') as f:
          ls = list(csv.reader(f))
      return ls

my_decorator.py

def my_decorator(sequeence):
  def outer(func):
      def inner(self):
          for item in sequeence:
              try:
                  func(self,*item)
              except Exception:
                  # print()仅供调试用,后期考虑将出错日志写入数据库
                  print('测试有问题')
              else:# print()仅供调试用,后期考虑将通过日志写入数据库
                  print('测试通过')
      return inner
  return outer

data.csv

admin,1
wp,1
666666,1
msramsrsa,0

find_test.py

import time
import unittest
from parameterized import parameterized

from pages.page_login import PageLogin
from pages.page_system_operate_log import PageSystemOperateLog
from utils.decorate import my_decorator
from utils.driver import WebDriver
from utils.reader import Reader

class SysOperateLogFindPageTest(unittest.TestCase):
  '''
  系统操作日志页面测试类:执行系统操作日志页面的UI测试
  作者:awake.silent@qq.com
  '''
  @my_decorator(Reader.read_csv('search_log_by_username.csv'))
  def test_search_log_by_username(self, username, expect):
      '''
      对系统操作日志页面的按照账号搜索日志功能进行UI测试
      :param username: 账号
      :param expect: 期望结果,'0‘代表搜索不到日志记录,'1‘代表可以搜索到日志记录
      :return:
      '''


      # 打开系统操作日志页面
      self.psol.open()
      time.sleep(2)
      # 输入账号并点击搜索
      self.psol.do_search(username)
      time.sleep(2)
      # 获取搜索结果
      result = self.psol.get_search_result()

      # 进行断言
      if expect == '0':
          self.assertEqual(0,len(result))
      else:
          self.assertNotEqual(0,len(result))
          for item in result:
              self.assertEqual(username, item.text)

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