接口自动化框架详解(Pytest+request+Allure)

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接口自动化是指模拟程序接口层面的自动化，由于接口不易变更，维护成本更小，所以深受各大公司的喜爱。

接口自动化包含2个部分，功能性的接口自动化测试和并发接口自动化测试。

本次文章着重介绍第一种，功能性的接口自动化框架。

一、简单介绍

环境：Mac、Python 3，Pytest，Allure，Request
流程：读取Yaml测试数据-生成测试用例-执行测试用例-生成Allure报告
模块类的设计说明:

Request.py 封装request方法，可以支持多协议扩展（get\post\put）
Config.py 读取配置文件，包括：不同环境的配置，email相关配置
Log.py 封装记录log方法，分为：debug、info、warning、error、critical
Email.py 封装smtplib方法，运行结果发送邮件通知
Assert.py 封装assert方法
run.py 核心代码。定义并执行用例集，生成报告

Yaml测试数据格式如下：

---Basic:dec: "基础设置"parameters:-url: /settings/basic.jsondata: slug=da1677475c27header: {"User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko)\Chrome/67.0.3396.99 Safari/537.36","Content-Type": "keep-alive"}

二、代码结构与框架流程

1、代码结构见下图：

2、框架流程见下图：

三、详细功能和使用说明

1、定义配置文件config.ini

该文件中区分测试环境[private_debug]和正式环境[online_release]分别定义相关配置项，[mail]部分为邮件相关配置项

# http接口测试框架配置信息[private_debug]# debug测试服务tester = your nameenvironment = debugversionCode = your versionhost = www.jianshu.comloginHost = /LoginloginInfo = email=wang@user.com&password=123456[online_release]# release正式服务tester = your nameenvironment = releaseversionCode = v1.0host = www.jianshu.comloginHost = /LoginloginInfo = email=wang@user.com&password=123456[mail]#发送邮件信息smtpserver = smtp.163.comsender = test1@163.comreceiver = wang@user.comusername = wang@user.compassword = 123456

2、读取yaml测试数据后封装

yaml测试数据例子见第一节，一条接口可定义多条case数据，get_parameter为已封装好的读取yaml数据方法，循环读取后将多条case数据存在list中。

class Basic:params = get_parameter('Basic')url = []data = []header = []for i in range(0, len(params)):url.append(params[i]['url'])data.append(params[i]['data'])header.append(params[i]['header'])

3、编写用例

class TestBasic:@pytest.allure.feature('Home')@allure.severity('blocker')@allure.story('Basic')def test_basic_01(self, action):"""用例描述：未登陆状态下查看基础设置"""conf = Config()data = Basic()test = Assert.Assertions()request = Request.Request(action)host = conf.host_debugreq_url = 'http://' + hosturls = data.urlparams = data.dataheaders = data.headerapi_url = req_url + urls[0]response = request.get_request(api_url, params[0], headers[0])assert test.assert_code(response['code'], 401)assert test.assert_body(response['body'], 'error', u'继续操作前请注册或者登录.')assert test.assert_time(response['time_consuming'], 400)Consts.RESULT_LIST.append('True')

4、运行整个框架run.py

if __name__ == '__main__':# 定义测试集allure_list = '--allure_features=Home,Personal'args = ['-s', '-q', '--alluredir', xml_report_path, allure_list]log.info('执行用例集为：%s' % allure_list)self_args = sys.argv[1:]pytest.main(args)cmd = 'allure generate %s -o %s' % (xml_report_path, html_report_path)try:shell.invoke(cmd)except:log.error('执行用例失败，请检查环境配置')raisetry:mail = Email.SendMail()mail.sendMail()except:log.error('发送邮件失败，请检查邮件配置')raise

5、err.log实例

[ERROR 2018-08-24 09:55:37]Response body != expected_msg, expected_msg is {"error":"继续操作前请注册或者登录9."}, body is {"error":"继续操作前请注册或者登录."}[ERROR 2018-08-24 10:00:11]Response time > expected_time, expected_time is 400, time is 482.745[ERROR 2018-08-25 21:49:41]statusCode error, expected_code is 208, statusCode is 200

6、Assert部分代码

def assert_body(self, body, body_msg, expected_msg):"""验证response body中任意属性的值:param body::param body_msg::param expected_msg::return:"""try:msg = body[body_msg]assert msg == expected_msgreturn Trueexcept:self.log.error("Response body msg != expected_msg, expected_msg is %s, body_msg is %s" % (expected_msg, body_msg))Consts.RESULT_LIST.append('fail')raisedef assert_in_text(self, body, expected_msg):"""验证response body中是否包含预期字符串:param body::param expected_msg::return:"""try:text = json.dumps(body, ensure_ascii=False)# print(text)assert expected_msg in textreturn Trueexcept:self.log.error("Response body Does not contain expected_msg, expected_msg is %s" % expected_msg)Consts.RESULT_LIST.append('fail')raise

7、Request部分代码

def post_request(self, url, data, header):"""Post请求:param url::param data::param header::return:"""if not url.startswith('http://'):url = '%s%s' % ('http://', url)print(url)try:if data is None:response = self.get_session.post(url=url, headers=header)else:response = self.get_session.post(url=url, params=data, headers=header)except requests.RequestException as e:print('%s%s' % ('RequestException url: ', url))print(e)return ()except Exception as e:print('%s%s' % ('Exception url: ', url))print(e)return ()# time_consuming为响应时间，单位为毫秒time_consuming = response.elapsed.microseconds/1000# time_total为响应时间，单位为秒time_total = response.elapsed.total_seconds()Common.Consts.STRESS_LIST.append(time_consuming)response_dicts = dict()response_dicts['code'] = response.status_codetry:response_dicts['body'] = response.json()except Exception as e:print(e)response_dicts['body'] = ''response_dicts['text'] = response.textresponse_dicts['time_consuming'] = time_consumingresponse_dicts['time_total'] = time_totalreturn response_dicts