基于Python Excel的自动化接口测试工具

基于Python Excel的自动化测试工具
搞小工具是一件挺有趣味的一件事情，尤其是还能提高工作效率的时候，这里简要介绍下基于python和excel的自动化接口测试小工具。

流程：

1. python 解析Excel文件（方便别人使用），读取配置，请求常量 校验规则等。
2. python 进行case读取，依次调用接口测试。
3. 输出测试报告文档和统计。

一般而言，对接口测试 的配置项如下：
4. 状态管理：
接口编码 是否使用
5. 接口定义
接口名称 接口描述 接口地址 请求方法 请求头 payload
6. 相应判断
HTTP响应状态码判断 HTTP返回值包含字符串判断 HTTP值相等判断

我们把它做成一个大表。

值得注意的是：

1. HTTP状态码包含多值，比如200/201/202
2. HTTP返回值包含字符串判断 包含多值，比如 包括“1”和“2”
3. HTTP值相等判断 同样包含多值 比如 vin = 1, din =2 , 左边为变量，右边为值，潜逃变量 写作 a.b.c =1
4. 支持常量
   先定义两个基本类：

'''
   测试案例POJO
'''
class TestCase:
    def __init__(self, code, name ,description, url,  method, header ,payload, check_rule_set):
        self.code = code
        self.name = name
        self.description = description
        self.url = url
        self.method = method 
        self.header = header
        self.payload = payload 
        self.check_rule_set = check_rule_set

'''
   测试结果
'''
class CheckResult:
    def __init__(self, result, reason):
        self.result = result
        self.reason = reason

开始干活，首先写一个Http 类。

class HttpUtil:

    @classmethod
    def post(cls, url, headers, payload ):
        logging.info("request url: %s, headers: %s, payload: %s", url, headers, payload)
        pre_headers = json.loads(headers)
        post_headers = cls.valid(pre_headers)
        response = requests.post(url, json=json.loads(payload), headers=post_headers)
        logging.info("response: %s, %s", response.status_code, response.json())
        return response
    
    @classmethod
    def get(cls, url, headers):
        logging.info("request url: %s, headers: %s", url, headers)
        pre_headers = json.loads(headers)
        post_headers = cls.valid(pre_headers)
        response = requests.get(url, headers=post_headers)
        logging.info("response: %s, %s", response.status_code, response.json())
        return response
    
    @classmethod
    def put(cls, url, headers, payload ):
        logging.info("request url: %s, headers: %s, payload: %s", url, headers, payload)
        pre_headers = json.loads(headers)
        post_headers = cls.valid(pre_headers)
        response = requests.put(url, json=json.loads(payload), headers=post_headers)
        logging.info("response: %s, %s", response.status_code, response.json())
        return response

接着是Excel操作类：

'''
   Csv操作类
'''
class ExcelUtil:

    max_col = 0
    max_row = 0
    constant_value_set = {}
    case_set = {}   
    input_api_codes = []
    log_dir = "./"
    out_put_file = "./defaul_log.log"

    @classmethod
    def load(cls, file_name):
        '''
            加载配置
        '''
        xl = xlrd.open_workbook(file_name)
        table = xl.sheet_by_name(u"测试用例")
        cls.max_col = table.ncols
        cls.max_row = table.nrows
        log_dir_value = table.cell(1,1).value
        if log_dir_value != None:
            cls.log_dir = log_dir_value
        out_put_file_value = table.cell(2,1).value
        if out_put_file_value != None:
            cls.out_put_file = out_put_file_value

        '''
            加载变量  
        '''
        for i in range(1,cls.max_col):
            if table.cell(6,i).value == 'Y':
                cls.constant_value_set[table.cell(4,i).value] = table.cell(5,i).value
        '''
            加载case  
        '''
        for j in range(9,cls.max_row):
            if table.cell(j,1).value == 'Y':
                cls.input_api_codes.append(table.cell(j,0).value)
                cls.case_set[table.cell(j,0).value] = cls.parse_row_to_case(table.row(j))
        '''
            常量替换
        '''
        for _, case in cls.case_set.items():
            for const_key, const_value in cls.constant_value_set.items():
                const_key_plus = "${" + const_key +"}"
                case.url = case.url.replace(const_key_plus, const_value)
                case.header = case.header.replace(const_key_plus, const_value)
                case.payload = case.payload.replace(const_key_plus, const_value)
                for key, rule in case.check_rule_set.items() :
                    rule = rule.replace(const_key_plus, const_value)
                    case.check_rule_set[key] = rule
            
    @classmethod
    def parse_row_to_case(cls,row_value):
        code = row_value[0].value
        name = row_value[2].value
        description = row_value[3].value
        url = row_value[4].value
        method = row_value[5].value
        header = row_value[6].value
        payload = row_value[7].value
        check_rule_set = {}
        expected_http_code = row_value[8].value
        expected_contains_value = row_value[9].value
        expected_equal_value = row_value[10].value
        if expected_http_code != None and expected_http_code != '':
            check_rule_set[CHECK_HTTPCODE] = str(int(expected_http_code))
        if expected_contains_value != None and expected_contains_value != '':
            check_rule_set[CHECK_VALUE_CONTAINS] = expected_contains_value
        if expected_equal_value != None and expected_equal_value!= '':
            check_rule_set[CHECK_VALUE_EQUAL] = expected_equal_value
        return TestCase(code, name, description, url, method, header, payload, check_rule_set)
    
    @classmethod
    def get_case(cls):
        return cls.case_set

    @classmethod
    def get_input_api_codes(cls):
        return cls.input_api_codes
    
    @classmethod
    def get_output_file(cls):
        return cls.out_put_file

    @classmethod
    def get_log_dir(cls):
        return cls.log_dir

上面都没啥说的，很简单，接着写测试主类和适配各种规则的校验方法：

'''
   测试工具类
'''
class TestTools:

    def __init__(self):
        self.input_case = {}
        self.test_result = {}

    def init(self):
        self.input_case  = ExcelUtil.get_case()
        self.input_api_codes = ExcelUtil.get_input_api_codes()
        self.output_file = ExcelUtil.get_output_file()

    def do_test(self):
        self.init()
        if self.input_api_codes == None:
            logging.error("input_api is None")
            return 
        for api_code in self.input_api_codes:
            if api_code in self.input_case.keys():
                case = self.input_case[api_code]
                try :
                    logging.info("tset api code is: %s", api_code)
                    self.test_item(case)
                except Exception as e:
                    logging.error("exception: %s", e.message)
                    check_result = CheckResult(False, "exception :" + e.message) 
                    self.test_result[case.code] = check_result
            else:
                logging.error("No such case: %s", api_code)
        self.generate_test_result()

    def test_item(self, case):
        if case != None:
            method = case.method
            response = None 
            logging.info("method is :%s", method)
            if method == HTTP_METHOD_GET:
                response = HttpUtil.get(case.url, case.header)
            elif method == HTTP_METHOD_POST:
                response = HttpUtil.post (case.url, case.header, case.payload)
            elif method == HTTP_METHOD_PUT:
                response = HttpUtil.http_get(case.url, case.header, case.payload)
            else:
                pass
            check_result = self.check(response,case.check_rule_set)
        else:
            check_result = CheckResult(False,"case is none")
        self.test_result[case.code] = check_result

    def check(self,response, check_rule_set):
        logging.info("response: %s, check_rule_set keys: %s", response, check_rule_set.keys())
        try:
            if check_rule_set == None:
                return CheckResult(True, "check_rule_set is None" ) 
            if response == None:
                return CheckResult(False, "response is None" ) 
            else:
                for key,value in check_rule_set.items():
                    if key == CHECK_HTTPCODE:
                        if str(response.status_code) != value:
                            return CheckResult(False, " error :CHECK_HTTPCODE, response code is: " + str(response.status_code) + ', expected: '  + str(value))
                        else:
                            logging.info(" pass CHECK_HTTPCODE ")
                    if key == CHECK_VALUE_CONTAINS:
                        if str(response.json()).find(value) == False:
                            return CheckResult(False, "error :CHECK_VALUE_CONTAINS, response not contains: " + value) 
                        else:
                            logging.info(" pass CHECK_VALUE_CONTAINS ")
                    if key == CHECK_VALUE_EQUAL:
                        if SPLIT_MARK not in value:
                            chek_result = self.check_equal(response, value)
                            if chek_result.result == False:
                                return chek_result
                        else:
                            check_equal_items = value.split(SPLIT_MARK)
                            for check_equal_item in check_equal_items:
                                chek_result = self.check_equal(response, check_equal_item)
                                if chek_result.result == False:
                                    return chek_result
                        logging.info(" pass CHECK_VALUE_EQUAL ")
                return CheckResult(True, "all rule set check succeed" ) 

        except Exception as e:
            logging.error("catch exception: %s", e.message)
            check_result = CheckResult(False, "exception :" + e.message)
        logging.info("check result: %s", str(check_result.result)+ "  " +check_result.reason)
        return check_result

        
    def check_equal(self ,response, check_equal_item):
        response_json = response.json()
        check_equal_item_relation = check_equal_item.split(EQUAL_MARK)
        if len(check_equal_item_relation) != 2:
            return CheckResult(False, "invalid rules: "+ check_equal_item) 
        response_value = None
        expected_value = check_equal_item_relation[1]
        try:
            key_list = check_equal_item_relation[0].split(POINT_SPLIT_MARK)
            print key_list
            temp_response_json = response_json
            for key_item in key_list:
                temp_response_json = temp_response_json[key_item]
            response_value = temp_response_json
        except Exception as e:
            logging.error("check_equal_item failed ,rule: %s, error: %s",check_equal_item, e.message)
        if response_value == None:
            return CheckResult(False, "check rules response value is None ,rules: "+ check_equal_item) 
        if str(response_value) == str(expected_value):
            return CheckResult(True, "parse equal check rule: "+ check_equal_item) 
        else:
            return CheckResult(False, "error when equal check rule: "+ check_equal_item + "response value is: " + str(response_value)+ ", expected value is: " + str(expected_value)) 

    def generate_test_result(self):
        count = len(self.test_result)
        success_count = 0
        for _, result_item in self.test_result.items():
            if result_item.result:
                success_count = success_count + 1
        failed_count = count - success_count
        with codecs.open(self.output_file, 'a+', encoding='utf-8') as f:
            f.write('***********************TEST RESSULT**************************\n')
            format_time='%Y-%m-%d_%a_%H-%M-%S'
            time_tup = time.localtime(time.time())
            cur_time = time.strftime(format_time, time_tup)
            time_string = cur_time + '  count: ' + str(count) +  ', success: '  + str(success_count) +', failed: '+  str(failed_count) + '\n'
            f.write(time_string)
            for key ,result in self.test_result.items():
                result_string = key +  "  " + self.input_case[key].name + "   " +  str(result.result) + "  " + result.reason + "\n"
                f.write(result_string)
            f.write('\n\n')

包含上述描述的各校验规则及统计 序列化方法（还不全完善），最后写main方法：

def main():
    file_name = "自动化测试Case.xlsx"
    import sys
    if len(sys.argv) > 1:
        file_name = sys.argv[1]
    ExcelUtil.load(file_name)
    set_log(ExcelUtil.get_log_dir())
    test_tool = TestTools()
    test_tool.do_test()

if __name__ == "__main__":
    main()

大功告成。

测试报告：

TEST RESSULT***
2019-09-05_Thu_19-17-58 count: 2, success: 1, failed: 1
IAM_API_1 根据用户ID获取用户信息 False exception :Value for header {companyid: 2} must be of type str or bytes, not
VIN_API_1 车辆信息测试 True all rule set check succeed

TEST RESSULT***
2019-09-05_Thu_19-28-26 count: 2, success: 1, failed: 1
IAM_API_1 根据用户ID获取用户信息 False error when equal check rule: data.iovCurrentVehicle=144115205311821369response value is: 144116206311726088, expected value is: 144115205311821369
VIN_API_1 车辆信息测试 True all rule set check succeed

TEST RESSULT***
2019-09-05_Thu_19-29-44 count: 2, success: 2, failed: 0
IAM_API_1 根据用户ID获取用户信息 True all rule set check succeed
VIN_API_1 车辆信息测试 True all rule set check succeed

还可以，就当随便练练手了