第一篇简书文章献给你,笔芯~
背景简介
最近在做接口测试,每次新功能提交测试,有大量的接口,有些接口参数有几十个,转化成用例,除了每个参数基础的边界值、等价类校验外,还涉及很多业务逻辑的比对测试。由于团队提供的API接口在swagger上面,每次测试在swagger上拼参数测试确实很方便,但是没有个记录,测试完了除非每个团队成员都对接口参数有保存,后续再要验证时要重新拼参数或是找同事拿已经拼好的参数,增加时间成本,而且要回归验证有需要再重新调一次,考虑到这些,做了一些需求调研,决定使用python+requests+unittest实现读取Excel用例自动执行请求。项目落成,在此做个记录,当然仍有许多不足之处需改进。
需求分析
要做一个东西,当然是要先搞清楚需求,即我们的现状,要实现怎样的效果,搞清楚了要实现什么,再来一步一步的任务拆分,然后想办法实现。
首先,开发提供给我们测试的接口是通过swagger自动生成,没有特定的接口文档,swagger上有每个接口详细的参数描述等信息。接口请求类型主要有GET、POST、PUT、DELETE,针对每个类型的接口,传参类型有所不同,不能用通用的requests传参来做拼接请求,如下:
如果类型为URL Path的,做请求时就需要拿到base_url+URL Path,拼接好后作为请求的url;
如果类型为Query的,就需要把参数以key-value的形式进行传参;等等...
依此,设计Excel模板如下:
每个团队成员只需要在Excel里面写一次用例,执行的时候记录下每个传参、请求的基础url,预期结果,之后就可以自动回归啦~
接下来就是要怎么实现这个过程了...
实现
就像把大象塞冰箱里面需要几个步骤一样,打开冰箱、把大象塞进去、关上冰箱....(⊙﹏⊙)b....大象根本就塞不下一般的冰箱好不啦~
言归正传,怎样实现这个过程:
1.遍历excel,读取数据
2.处理读取到的数据,拿到我们想要的数据
3.拼接请求,发送request请求
4.拿到response状态值,对比excel预期结果是否一致
架构如图(也说不上什么架构哈~)
说明:
·operate_excel.py:封装一些操作excel数据表的方法
·get_data.py:封装获取excel值的方法
·data_config.py:配置excel的固定列,封装获取对应列的方法
·handle_requests.py:封装request请求
·run.py:主函数,根据拿到的请求类型判断,拼装请求url及参数自动发送请求,返回实际请求的status_code以及excel的expect。然后作为参数传递给unittest的test方法自动断言
data_config.py:
#!/usr/bin/python
# -*- coding:utf-8 -*-
"""
获取Excel每列
"""
class global_var:
Id = '0'
interface_name = '1'
case_name = '2'
case_paramas_type = '3'
case_method = '4'
case_headers = '5'
parameters = '6'
query = '7'
body = '8'
request_url ='9'
expect = '10'
result = '11'
sql1 = '12'
sql2 = '13'
def get_id():
return global_var.Id
def get_url():
return global_var.request_url
def get_interface_name():
return global_var.interface_name
def get_case_name():
return global_var.case_name
def get_case_params_type():
return global_var.case_paramas_type
def get_method():
return global_var.case_method
def get_headers():
return global_var.case_headers
def get_parameters():
return global_var.parameters
def get_query():
return global_var.query
def get_body():
return global_var.body
def get_expect():
return global_var.expect
get_data.py:
#!/usr/bin/python
# -*- coding:utf-8 -*-
"""
获取单元格中的内容
"""
from NewTest.public.operate_excel import OperateExcel
from NewTest.public import data_config
import xlrd
class GetData:
def __init__(self,file_name):
self.opera_excel = OperateExcel(file_name)
# 获取Excel行数,即case个数
def get_case_linese(self):
return self.opera_excel.get_lines()
# 获取是否携带headers
def is_header(self,row):
col = int(data_config.get_headers())
header = self.opera_excel.get_cell_value(row,col)
if header != '':
return header
else:
return None
# 获取请求方式
def get_request_method(self,row):
col = int(data_config.get_method())
request_method = self.opera_excel.get_cell_value(row,col)
return request_method
# 获取请求url
def get_request_url(self,row):
col = int(data_config.get_url())
request_url = self.opera_excel.get_cell_value(row,col)
if request_url == '':
return None
else:
return request_url
# 获取请求query
def get_request_query(self,row):
col = int(data_config.get_query())
reuqest_query = self.opera_excel.get_cell_value(row,col)
if reuqest_query == '':
return None
else:
return reuqest_query
# 获取请求body
def get_request_body(self,row):
col = int(data_config.get_body())
request_body = self.opera_excel.get_cell_value(row,col)
if request_body == '':
return None
else:
return request_body
# 获取期望结果
def get_expect_result(self,row):
col = int(data_config.get_expect())
expect_result = self.opera_excel.get_cell_value(row,col)
if expect_result != '':
return expect_result
else:
return None
# 获取用例参数方式
def get_case_params_type(self,row):
col = int(data_config.get_case_params_type())
case_paramas_type = self.opera_excel.get_cell_value(row,col)
return case_paramas_type
# 获取parameters
def get_request_params(self,row):
col = int(data_config.get_parameters())
request_params = self.opera_excel.get_cell_value(row,col)
return request_params
def get_case_id(self,row):
col = int(data_config.get_id())
id = self.opera_excel.get_cell_value(row,col)
return id
operate_excel.py:
#!/usr/bin/python
# -*- coding:utf-8 -*-
import xlrd
class OperateExcel:
def __init__(self,file_name,sheet_id=0):
self.file_name = file_name
self.sheet_id = sheet_id
self.data = self.get_data_contents()
self.new_path = '../NewTest/report/'
# 获取sheet内容
def get_data_contents(self):
data = xlrd.open_workbook(self.file_name)
table = data.sheet_by_index(self.sheet_id)
return table
# 获取单元格行数
def get_lines(self):
tables = self.get_data_contents()
return tables.nrows
# 获取某个单元格内容
def get_cell_value(self,row,col):
return self.data.cell_value(row,col)
handle_requests.py:
#!/usr/bin/python
# -*- coding:utf-8 -*-
"""
封装get/post请求
"""
import requests
class SendRequest:
def request_main(self, method, request_url, params=None, data=None, headers=None):
try:
res = requests.request(method, request_url, params=params, data=data, headers=headers, timeout=5)
return res
except (requests.ConnectionError, requests.HTTPError, requests.URLRequired, requests.Timeout,
requests.ConnectTimeout), e:
print e
run.py
#!/urs/bin/python
# -*- coding:utf-8 -*-
from public.get_data import GetData
from public.handle_requests import SendRequest
import json
import requests
from nose_parameterized import parameterized
import unittest
class TestRunCase():
def __init__(self, file_name):
self.run_request = SendRequest()
self.data = GetData(file_name)
self.path = file_name
def get_params(self):
param_dic = []
try:
rows_count = self.data.get_case_linese() # 获取用例excel条数
for i in range(1, rows_count):
method = self.data.get_request_method(i)
type = self.data.get_case_params_type(i)
query = self.data.get_request_query(i)
body = self.data.get_request_body(i)
url = self.data.get_request_url(i)
params = self.data.get_request_params(i)
if type == "URL Path":
request_url = url + str(params)
params = None
data = None
headers = None
elif type == "No Type":
request_url = url
params = None
data = None
headers = None
elif type == "Query":
request_url = url
params = json.loads(query)
data = None
headers = None
elif type == "URL Path And Query":
request_url = url + params
params = json.loads(query)
data = None
headers = None
elif type == "Body":
request_url = url
body = json.loads(body)
params = None
data = json.dumps(body)
headers = None
else:
print "请求方式不在范围内!"
response = self.run_request.request_main(method, request_url, params=params, data=data,
headers=headers)
actual_results = response.status_code
expect_results = int(self.data.get_expect_result(i))
case_id = i + 1
param_dic.append((case_id, expect_results, actual_results))
return param_dic
except (requests.ConnectionError, requests.HTTPError, requests.URLRequired, requests.Timeout,
requests.ConnectTimeout) as e:
print e
path = "/Users/shifenyuanqi/Desktop/test.xlsx"
params_list = TestRunCase(path).get_params()
print params_list
class TestRun(unittest.TestCase):
@parameterized.expand(params_list)
def test_run(self, name, expect_res, actual_res):
self.assertEqual(expect_res, actual_res)
最后run一波,自动遍历excel的每条case执行请求生成结果:
当然还有写入excel执行结果啦,生成测试报告,自动持续集成到Jenkins这些这里就暂时不赘述了~~