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在python中Template可以将字符串的格式固定下来，重复利用。 同一套测试框架为了可以复用，所以我们可以将用例部分做参数化，然后运用到各个项目中。

代码如下：

coding=utf-8'''作者：大石功能：自动生成pyunit框架下的接口测试用例环境：python2.7.6用法：将用户给的参数处理成对应格式,然后调用模块类生成函数，并将参数传入即可'''from string import Template#动态生成单个测试用例函数字符串def singleMethodCreate(MethodList,interfaceNamePara):    code=Template('''\n    def test_${testcase}(self):        u"""${testcaseName}"""        headers = $headers        data = $data        re = requests.$method(url='$url',headers=headers,data=data)        status_code = re.status_code        s = str(status_code)        json = re.text        logging.info('-'*5+'返回状态码是'+s+'-'*5)        logging.info('-'*5+'返回结果集是'+json+'-'*5)        assert status_code == 200        assert json['status'] == 'ok'''')    string = code.substitute(testcase=MethodList["testcase"],testcaseName=MethodList["TestcaseName"],                             method=MethodList['method'],url=MethodList['url'],headers=MethodList['headers'],data=MethodList['data'],                             )    return string#拼接单个的测试用例函数字符串为完整字符串并传回主函数#MethodParaList获取测试用例部分listdef methodCreate(MethodParaList,interfaceNamePara):    string = ""    for MethodPara in MethodParaList:        string2=singleMethodCreate(MethodPara,interfaceNamePara)        string=string+string2    return string#构造单个测试集def singleTestsuitCreate(MethodList,parameters):    code = Template('''suite.addTest(${className}("test_${testcase}"))''')    string = code.substitute(testcase = MethodList["testcase"],className = parameters[0])    return string#添加测试集def addtestsuit(MethodParaList,interfaceNamePara):    string = ""    for MethodPara in MethodParaList:        string2 = singleTestsuitCreate(MethodPara,interfaceNamePara)        string=string+string2    return string#生成测试用例类函数字符串def modelClassCreate(parameters):    modelCode = methodCreate(parameters[2],parameters[1])    adtestsuit = addtestsuit(parameters[2],parameters)    code = Template('''#coding: utf-8"""作者：大石功能：待执行的接口测试用例环境：python2.7.6用法：通过框架自动触发调用"""import unittest,requests,datetime,sys,logging,BSTestRunner,time,osfrom Log import Logclass ${className}(unittest.TestCase):    u"""待测试接口：${interfaceName}"""    def setUp(self):        logging.info('-'*5+"begin test"+"-"*5)    def tearDown(self):        logging.info('-'*5+"end test"+'-'*5)    ${model}if __name__ == "__main__":    #解决UnicodeDecodeError: 'ascii' codec can't decode byte 0xe5 in position 97: ordinal not in range(128)    reload(sys)    sys.setdefaultencoding('utf8')    #构造测试集    suite = unittest.TestSuite()    ${testsuite}    #定义date为日期，time为时间    date=time.strftime("%Y%m%d")    time1=time.strftime("%H%M%S")    now=time.strftime("%Y-%m-%d-%H_%M_%S",time.localtime(time.time()))    #创建路径    path='F:/test/study/yaml/test_log/'+now+"/"    #解决多次执行时报路径已存在的错误    try:        os.makedirs(path)    except:        if path!= None:            logging.error(u'当前路径已经存在')    filename=path+'Report.html'    fp=file(filename,'wb')    #日志记录    Log.log()    #执行测试    runner =BSTestRunner.BSTestRunner(stream=fp,title=u'下单平台接口测试用例',description=u'接口用例列表：')    runner.run(suite)    fp.close()''')    fileStr = code.substitute(className=parameters[0],interfaceName=parameters[1],testsuite=adtestsuit,model=modelCode)    f=open(parameters[0]+".py",'w')    f.write(fileStr)    f.close()

然后测试用例部分如下：

parameters=["Testcase_Orders",                "/login",               [                    {"TestcaseName":"测试登录","method":"post","url":"http://www.senbaba.cn/login","headers":{'content-type': 'application/json',                   'User-Agent':'Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko',                   'Accept':'application/x-ms-application, image/jpeg, application/xaml+xml, image/gif, image/pjpeg, application/x-ms-xbap, */*',                   'Accept-Language':'zh-CN'},"data":{"uname":"187071484771","pwd":"123456"},                        "testcase":"login"},                   {"TestcaseName":"测试登录","method":"post","url":"http://www.senbaba.cn/login1","headers":{'content-type': 'application/json',                   'User-Agent':'Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko',                   'Accept':'application/x-ms-application, image/jpeg, application/xaml+xml, image/gif, image/pjpeg, application/x-ms-xbap, */*',                   'Accept-Language':'zh-CN'},"data":{"uname":"187071484771","pwd":"123457"},                        "testcase":"login_failed"}                ]            ]

自动生成的测试用例如下：

#coding: utf-8"""作者：大石功能：待执行的接口测试用例环境：python2.7.6用法：通过框架自动触发调用"""import unittest,requests,datetime,sys,logging,BSTestRunner,time,osfrom Log import Logclass Testcase_Orders(unittest.TestCase):    u"""待测试接口：/login"""    def setUp(self):        logging.info('-'*5+"begin test"+"-"*5)    def tearDown(self):        logging.info('-'*5+"end test"+'-'*5)        def test_login(self):        u"""测试登录"""        headers = {'Accept-Language': 'zh-CN', 'content-type': 'application/json', 'Accept': 'application/x-ms-application, image/jpeg, application/xaml+xml, image/gif, image/pjpeg, application/x-ms-xbap, */*', 'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko'}        data = {'uname': '187071484771', 'pwd': '123456'}        re = requests.post(url='http://www.senbaba.cn/login',headers=headers,data=data)        status_code = re.status_code        s = str(status_code)        json = re.text        logging.info('-'*5+'返回状态码是'+s+'-'*5)        logging.info('-'*5+'返回结果集是'+json+'-'*5)        assert status_code == 200        assert json['status'] == 'ok'    def test_login_failed(self):        u"""测试登录"""        headers = {'Accept-Language': 'zh-CN', 'content-type': 'application/json', 'Accept': 'application/x-ms-application, image/jpeg, application/xaml+xml, image/gif, image/pjpeg, application/x-ms-xbap, */*', 'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko'}        data = {'uname': '187071484771', 'pwd': '123457'}        re = requests.post(url='http://www.senbaba.cn/login1',headers=headers,data=data)        status_code = re.status_code        s = str(status_code)        json = re.text        logging.info('-'*5+'返回状态码是'+s+'-'*5)        logging.info('-'*5+'返回结果集是'+json+'-'*5)        assert status_code == 200        assert json['status'] == 'ok'if __name__ == "__main__":    #解决UnicodeDecodeError: 'ascii' codec can't decode byte 0xe5 in position 97: ordinal not in range(128)    reload(sys)    sys.setdefaultencoding('utf8')    #构造测试集    suite = unittest.TestSuite()        suite.addTest(Testcase_Orders("test_login"))    suite.addTest(Testcase_Orders("test_login_failed"))    #定义date为日期，time为时间    date=time.strftime("%Y%m%d")    time1=time.strftime("%H%M%S")    now=time.strftime("%Y-%m-%d-%H_%M_%S",time.localtime(time.time()))    #创建路径    path='F:/test/study/yaml/test_log/'+now+"/"    #解决多次执行时报路径已存在的错误    try:        os.makedirs(path)    except:        if path!= None:            logging.error(u'当前路径已经存在')    filename=path+'Report.html'    fp=file(filename,'wb')    #日志记录    Log.log()    #执行测试    runner =BSTestRunner.BSTestRunner(stream=fp,title=u'下单平台接口测试用例',description=u'接口用例列表：')    runner.run(suite)    fp.close()

20171019添加测试集的一个简单方法：

#添加测试集def addtestsuit(parameters):    string = ""    temp = Template('''\n    suite.addTest(${className}("test_${testcase}"))''')    l = len(parameters[2])    for i in range(0,l):        testcase1 = parameters[2][i]['testcase']        string2 = temp.substitute(className = parameters[0],testcase = testcase1)        string=string+string2        print string    return string

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