Python--unittest参数化

# file_to_list

import os
import xlrd
import json


class DataToParam(object):
    @classmethod
    def text(cls, file_name, seq=','):
        cls.file_exist(file_name)
        with open(file_name, encoding='utf-8') as f:
            res = []
            for line in f:
                res.append(line.strip().split(seq))
            return res

    @classmethod
    def excel(cls, file_name):
        cls.file_exist(file_name)
        book = xlrd.open_workbook(file_name)  # 打开excel
        sheet = book.sheet_by_index(0)  # 获取sheet页
        res = []
        for row in range(sheet.nrows):
            line_list = sheet.row_values(row)  # 取excel里面的每一行数据，返回是一个list
            res.append(line_list)
        return res

    @classmethod
    def file_exist(cls, file_name):
        if os.path.isfile(file_name):
            return True
        raise Exception('参数化文件不存在！')
# print(json.dumps(DataToParam.excel('data.xlsx'), indent=4))

import unittestimport nose_parameterizedfrom file_to_list import DataToParam# case_data = [#     [1, 1, 1.0],#     [1, 2, 0.5],#     [0.5, 1, 0.5]# ]def calc(a, b):    a = int(a)    b = int(b)    res = round(a / b, 2)    return resclass MyTest(unittest.TestCase):    @nose_parameterized.parameterized.expand(DataToParam.excel('data.xlsx'))    def test_func(self, a, b, e):        res = calc(a, b)        self.assertEqual(res, float(e))if __name__ == '__main__':    unittest.main()  # 他会帮你运行当前这个python里面全部的测试用例