Python3+Selenium3+Unittest+ddt+Requests 接口自动化测试框架

为何选择代码框架进行接口测试？

本文总结分享介绍接口测试框架开发，环境使用python3+selenium3+unittest+ddt+requests测试框架及ddt数据驱动，采用Excel管理测试用例等集成测试数据功能，以及使用HTMLTestRunner来生成测试报告，目前有开源的poman、Jmeter等接口测试工具，为什么还要开发接口测试框架呢？因接口测试工具也有存在几点不足。

测试数据不可控制。比如接口返回数据不可控，就无法自动断言接口返回的数据，不能断定是接口程序引起，还是测试数据变化引起的错误，所以需要做一些初始化测试数据。接口工具没有具备初始化测试数据功能，无法做到真正的接口测试自动化。
无法测试加密接口。实际项目中，多数接口不是可以随便调用，一般情况无法摸拟和生成加密算法。如时间戳和MDB加密算法，一般接口工具无法摸拟。
扩展能力不足。开源的接口测试工具无法实现扩展功能。比如，我们想生成不同格式的测试报告，想将测试报告发送到指定邮箱，又想让接口测试集成到CI中，做持续集成定时任务。

接口测试框架处理流程：

测试框架处理过程如下：

首先初始化清空数据库表的数据，向数据库插入测试数据；
调用被测试系统提供的接口，先数据驱动读取excel用例一行数据；
发送请求数据，根据传参数据，向数据库查询得到对应的数据；
将查询的结果组装成JSON格式的数据，同时根据返回的数据值与Excel的值对比判断，并写入结果至指定Excel测试用例表格；
通过单元测试框架断言接口返回的数据，并生成测试报告，最后把生成最新的测试报告HTML文件发送指定的邮箱。

测试框架结构目录介绍

目录结构介绍如下：

config/: 文件路径配置
database/: 测试用例模板文件及数据库和发送邮箱配置文件
db_fixture/: 初始化接口测试数据
lib/: 程序核心模块。包含有excel解析读写、发送邮箱、发送请求、生成最新测试报告文件
package/: 存放第三方库包。如HTMLTestRunner，用于生成HTML格式测试报告
report/: 生成接口自动化测试报告
testcase/: 用于编写接口自动化测试用例
run_demo.py: 执行所有接口测试用例的主程序

数据库的封装：

1 [tester]2 name = Jason3 4 [mysqlconf]5 host = 127.0.0.16 port = 33067 user = root8 password = 1234569 db_name = guest
10
11 [user]
12 # 发送邮箱服务器
13 HOST_SERVER = smtp.163.com
14 # 邮件发件人
15 FROM = 111@163.com
16 # 邮件收件人
17 TO = 222@126.com
18 # 发送邮箱用户名/密码
19 user = aaa
20 password = aaa
21 # 邮件主题
22 SUBJECT = 发布会系统接口自动化测试报告
config.ini1 #!/usr/bin/env python2 # _*_ coding:utf-8 _*_3 __author__ = 'YinJia'4 5 import os,sys6 sys.path.append(os.path.dirname(os.path.dirname(__file__)))7 from config import setting8 from pymysql import connect,cursors9 from pymysql.err import OperationalError
10 import configparser as cparser
11
12 # --------- 读取config.ini配置文件 ---------------
13 cf = cparser.ConfigParser()
14 cf.read(setting.TEST_CONFIG,encoding='UTF-8')
15 host = cf.get("mysqlconf","host")
16 port = cf.get("mysqlconf","port")
17 user = cf.get("mysqlconf","user")
18 password = cf.get("mysqlconf","password")
19 db = cf.get("mysqlconf","db_name")
20
21 class DB:
22     """
23     MySQL基本操作
24     """
25     def __init__(self):
26         try:
27             # 连接数据库
28             self.conn = connect(host = host,
29                                 user = user,
30                                 password = password,
31                                 db = db,
32                                 charset = 'utf8mb4',
33                                 cursorclass = cursors.DictCursor
34                                 )
35         except OperationalError as e:
36             print("Mysql Error %d: %s" % (e.args[0],e.args[1]))
37
38    # 清除表数据
39     def clear(self,table_name):
40         real_sql = "delete from " + table_name + ";"
41         with self.conn.cursor() as cursor:
42              # 取消表的外键约束
43             cursor.execute("SET FOREIGN_KEY_CHECKS=0;")
44             cursor.execute(real_sql)
45         self.conn.commit()
46
47     # 插入表数据
48     def insert(self, table_name, table_data):
49         for key in table_data:
50             table_data[key] = "'"+str(table_data[key])+"'"
51         key   = ','.join(table_data.keys())
52         value = ','.join(table_data.values())
53         real_sql = "INSERT INTO " + table_name + " (" + key + ") VALUES (" + value + ")"
54
55         with self.conn.cursor() as cursor:
56             cursor.execute(real_sql)
57         self.conn.commit()
58
59     # 关闭数据库
60     def close(self):
61         self.conn.close()
62
63     # 初始化数据
64     def init_data(self, datas):
65         for table, data in datas.items():
66             self.clear(table)
67             for d in data:
68                 self.insert(table, d)
69         self.close()
mysql_db.py1 #!/usr/bin/env python2 # _*_ coding:utf-8 _*_3 __author__ = 'YinJia'4 5 import sys, time, os6 sys.path.append(os.path.dirname(os.path.dirname(__file__)))7 from db_fixture.mysql_db import DB8 9 # 定义过去时间
10 past_time = time.strftime("%Y-%m-%d %H:%M:%S",time.localtime(time.time()-100000))
11 # 定义将来时间
12 future_time = time.strftime("%Y-%m-%d %H:%M:%S",time.localtime(time.time()+10000))
13
14 # 创建测试数据
15 datas = {
16     # 发布会表数据
17     'sign_event':[
18         {'id':1,'name':'红米Pro发布会','`limit`':2000,'status':1,'address':'北京会展中心','start_time':future_time},
19         {'id':2,'name':'苹果iphon6发布会','`limit`':1000,'status':1,'address':'宝安体育馆','start_time':future_time},
20         {'id':3,'name':'华为荣耀8发布会','`limit`':2000,'status':0,'address':'深圳福田会展中心','start_time':future_time},
21         {'id':4,'name':'苹果iphon8发布会','`limit`':2000,'status':1,'address':'深圳湾体育中心','start_time':past_time},
22         {'id':5,'name':'小米5发布会','`limit`':2000,'status':1,'address':'北京国家会议中心','start_time':future_time},
23     ],
24     #　嘉宾表数据
25     'sign_guest':[
26         {'id':1,'realname':'Tom','phone':13511886601,'email':'alen@mail.com','sign':0,'event_id':1},
27         {'id':2,'realname':'Jason','phone':13511886602,'email':'sign@mail.com','sign':1,'event_id':1},
28         {'id':3,'realname':'Jams','phone':13511886603,'email':'tom@mail.com','sign':0,'event_id':5},
29     ],
30 }
31
32 # 测试数据插入表
33 def init_data():
34     DB().init_data(datas)
test_data.py1 #!/usr/bin/env python2 # _*_ coding:utf-8 _*_3 __author__ = 'YinJia'4 5 import os,sys6 BASE_DIR = os.path.dirname(os.path.dirname(__file__))7 sys.path.append(BASE_DIR)8 9 # 配置文件
10 TEST_CONFIG =  os.path.join(BASE_DIR,"database","config.ini")
11 # 测试用例模板文件
12 SOURCE_FILE = os.path.join(BASE_DIR,"database","DemoAPITestCase.xlsx")
13 # excel测试用例结果文件
14 TARGET_FILE = os.path.join(BASE_DIR,"report","excelReport","DemoAPITestCase.xlsx")
15 # 测试用例报告
16 TEST_REPORT = os.path.join(BASE_DIR,"report")
17 # 测试用例程序文件
18 TEST_CASE = os.path.join(BASE_DIR,"testcase")setting.py

程序核心代码：

1 #!/usr/bin/env python2 # _*_ coding:utf-8 _*_3 __author__ = 'YinJia'4 5 import os6 7 def new_report(testreport):8     """9     生成最新的测试报告文件
10     :param testreport:
11     :return:返回文件
12     """
13     lists = os.listdir(testreport)
14     lists.sort(key=lambda fn: os.path.getmtime(testreport + "\\" + fn))
15     file_new = os.path.join(testreport,lists[-1])
16     return file_newnetReport.py1 #!/usr/bin/env python2 # _*_ coding:utf-8 _*_3 __author__ = 'YinJia'4 5 import xlrd6 7 class ReadExcel():8     """读取excel文件数据"""9     def __init__(self,fileName, SheetName="Sheet1"):
10         self.data = xlrd.open_workbook(fileName)
11         self.table = self.data.sheet_by_name(SheetName)
12
13         # 获取总行数、总列数
14         self.nrows = self.table.nrows
15         self.ncols = self.table.ncols
16     def read_data(self):
17         if self.nrows > 1:
18             # 获取第一行的内容，列表格式
19             keys = self.table.row_values(0)
20             listApiData = []
21             # 获取每一行的内容，列表格式
22             for col in range(1, self.nrows):
23                 values = self.table.row_values(col)
24                 # keys，values组合转换为字典
25                 api_dict = dict(zip(keys, values))
26                 listApiData.append(api_dict)
27             return listApiData
28         else:
29             print("表格是空数据!")
30             return Nonereadexcel.py1 #!/usr/bin/env python2 # _*_ coding:utf-8 _*_3 __author__ = 'YinJia'4 5 import os,sys,json6 sys.path.append(os.path.dirname(os.path.dirname(__file__)))7 8 9 class SendRequests():
10     """发送请求数据"""
11     def sendRequests(self,s,apiData):
12         try:
13             #从读取的表格中获取响应的参数作为传递
14             method = apiData["method"]
15             url = apiData["url"]
16             if apiData["params"] == "":
17                 par = None
18             else:
19                 par = eval(apiData["params"])
20             if apiData["headers"] == "":
21                 h = None
22             else:
23                 h = eval(apiData["headers"])
24             if apiData["body"] == "":
25                 body_data = None
26             else:
27                 body_data = eval(apiData["body"])
28             type = apiData["type"]
29             v = False
30             if type == "data":
31                 body = body_data
32             elif type == "json":
33                 body = json.dumps(body_data)
34             else:
35                 body = body_data
36
37             #发送请求
38             re = s.request(method=method,url=url,headers=h,params=par,data=body,verify=v)
39             return re
40         except Exception as e:
41             print(e)sendrequests.py1 #!/usr/bin/env python2 # _*_ coding:utf-8 _*_3 __author__ = 'YinJia'4 5 import os,sys6 sys.path.append(os.path.dirname(os.path.dirname(__file__)))7 from config import setting8 import smtplib9 from lib.newReport import new_report
10 import configparser
11 from email.mime.text import MIMEText
12 from email.mime.multipart import MIMEMultipart
13
14
15 def send_mail(file_new):
16     """
17     定义发送邮件
18     :param file_new:
19     :return: 成功：打印发送邮箱成功；失败：返回失败信息
20     """
21     f = open(file_new,'rb')
22     mail_body = f.read()
23     f.close()
24     #发送附件
25     con = configparser.ConfigParser()
26     con.read(setting.TEST_CONFIG,encoding='utf-8')
27     report = new_report(setting.TEST_REPORT)
28     sendfile = open(report,'rb').read()
29     # --------- 读取config.ini配置文件 ---------------
30     HOST = con.get("user","HOST_SERVER")
31     SENDER = con.get("user","FROM")
32     RECEIVER = con.get("user","TO")
33     USER = con.get("user","user")
34     PWD = con.get("user","password")
35     SUBJECT = con.get("user","SUBJECT")
36
37     att = MIMEText(sendfile,'base64','utf-8')
38     att["Content-Type"] = 'application/octet-stream'
39     att.add_header("Content-Disposition", "attachment", filename=("gbk", "", report))
40
41     msg = MIMEMultipart('related')
42     msg.attach(att)
43     msgtext = MIMEText(mail_body,'html','utf-8')
44     msg.attach(msgtext)
45     msg['Subject'] = SUBJECT
46     msg['from'] = SENDER
47     msg['to'] = RECEIVER
48
49     try:
50         server = smtplib.SMTP()
51         server.connect(HOST)
52         server.starttls()
53         server.login(USER,PWD)
54         server.sendmail(SENDER,RECEIVER,msg.as_string())
55         server.quit()
56         print("邮件发送成功！")
57     except Exception as  e:
58         print("失败: " + str(e))sendmail.py1 #!/usr/bin/env python2 # _*_ coding:utf-8 _*_3 __author__ = 'YinJia'4 5 import os,sys6 sys.path.append(os.path.dirname(os.path.dirname(__file__)))7 import shutil8 from config import setting9 from openpyxl import load_workbook
10 from openpyxl.styles import Font,Alignment
11 from openpyxl.styles.colors import RED,GREEN,DARKYELLOW
12 import configparser as cparser
13
14 # --------- 读取config.ini配置文件 ---------------
15 cf = cparser.ConfigParser()
16 cf.read(setting.TEST_CONFIG,encoding='UTF-8')
17 name = cf.get("tester","name")
18
19 class WriteExcel():
20     """文件写入数据"""
21     def __init__(self,fileName):
22         self.filename = fileName
23         if not os.path.exists(self.filename):
24             # 文件不存在，则拷贝模板文件至指定报告目录下
25             shutil.copyfile(setting.SOURCE_FILE,setting.TARGET_FILE)
26         self.wb = load_workbook(self.filename)
27         self.ws = self.wb.active
28
29     def write_data(self,row_n,value):
30         """
31         写入测试结果
32         :param row_n:数据所在行数
33         :param value: 测试结果值
34         :return: 无
35         """
36         font_GREEN = Font(name='宋体', color=GREEN, bold=True)
37         font_RED = Font(name='宋体', color=RED, bold=True)
38         font1 = Font(name='宋体', color=DARKYELLOW, bold=True)
39         align = Alignment(horizontal='center', vertical='center')
40         # 获数所在行数
41         L_n = "L" + str(row_n)
42         M_n = "M" + str(row_n)
43         if value == "PASS":
44             self.ws.cell(row_n, 12, value)
45             self.ws[L_n].font = font_GREEN
46         if value == "FAIL":
47             self.ws.cell(row_n, 12, value)
48             self.ws[L_n].font = font_RED
49         self.ws.cell(row_n, 13, name)
50         self.ws[L_n].alignment = align
51         self.ws[M_n].font = font1
52         self.ws[M_n].alignment = align
53         self.wb.save(self.filename)writeexcel.py

接口测试用例编写：

1 #!/usr/bin/env python2 # _*_ coding:utf-8 _*_3 __author__ = 'YinJia'4 5 import os,sys6 sys.path.append(os.path.dirname(os.path.dirname(__file__)))7 import unittest,requests,ddt8 from config import setting9 from lib.readexcel import ReadExcel
10 from lib.sendrequests import SendRequests
11 from lib.writeexcel import WriteExcel
12
13 testData = ReadExcel(setting.SOURCE_FILE, "Sheet1").read_data()
14
15 @ddt.ddt
16 class Demo_API(unittest.TestCase):
17     """发布会系统"""
18     def setUp(self):
19         self.s = requests.session()
20
21     def tearDown(self):
22         pass
23
24     @ddt.data(*testData)
25     def test_api(self,data):
26         # 获取ID字段数值，截取结尾数字并去掉开头0
27         rowNum = int(data['ID'].split("_")[2])
28         # 发送请求
29         re = SendRequests().sendRequests(self.s,data)
30         # 获取服务端返回的值
31         self.result = re.json()
32         # 获取excel表格数据的状态码和消息
33         readData_code = int(data["status_code"])
34         readData_msg = data["msg"]
35         if readData_code == self.result['status'] and readData_msg == self.result['message']:
36             OK_data = "PASS"
37             WriteExcel(setting.TARGET_FILE).write_data(rowNum + 1,OK_data)
38         if readData_code != self.result['status'] or readData_msg != self.result['message']:
39             NOT_data = "FAIL"
40             WriteExcel(setting.TARGET_FILE).write_data(rowNum + 1,NOT_data)
41         self.assertEqual(self.result['status'], readData_code, "返回实际结果是->:%s" % self.result['status'])
42         self.assertEqual(self.result['message'], readData_msg, "返回实际结果是->:%s" % self.result['message'])
43
44 if __name__=='__main__':
45     unittest.main()testAPI.py

集成测试报告：

1 #!/usr/bin/env python2 # _*_ coding:utf-8 _*_3 __author__ = 'YinJia'4 5 6 import os,sys7 sys.path.append(os.path.dirname(__file__))8 from config import setting9 import unittest,time
10 from HTMLTestRunner import HTMLTestRunner
11 from lib.sendmail import send_mail
12 from lib.newReport import new_report
13 from db_fixture import test_data
14 from package.HTMLTestRunner import HTMLTestRunner
15
16 def add_case(test_path=setting.TEST_CASE):
17     """加载所有的测试用例"""
18     discover = unittest.defaultTestLoader.discover(test_path, pattern='*API.py')
19     return discover
20
21 def run_case(all_case,result_path=setting.TEST_REPORT):
22     """执行所有的测试用例"""
23
24     # 初始化接口测试数据
25     test_data.init_data()
26
27     now = time.strftime("%Y-%m-%d %H_%M_%S")
28     filename =  result_path + '/' + now + 'result.html'
29     fp = open(filename,'wb')
30     runner = HTMLTestRunner(stream=fp,title='发布会系统接口自动化测试报告',
31                             description='环境：windows 7 浏览器：chrome',
32                             tester='Jason')
33     runner.run(all_case)
34     fp.close()
35     report = new_report(setting.TEST_REPORT) #调用模块生成最新的报告
36     send_mail(report) #调用发送邮件模块
37
38 if __name__ =="__main__":
39     cases = add_case()
40     run_case(cases)run_demo.py

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