Excel+DDT数据驱动实例

一、首先安装dtt模块

数据驱动原理

1.测试数据为多个字典的list类型

2.测试类前加修饰@ddt.ddt

3.case前加修饰@ddt.data()

4.运行后用例会自动加载成N个单独的用例

二、实例

ExcellData.py

 # coding:utf-8
 import xlrd

 class excel:
     def __init__(self):
         self.test_data_path = 'F:\\testdata.xlsx'

     def open_excel(self,file):
         u'''读取excel文件'''
         try:
             data = xlrd.open_workbook(file)
             return data
         except Exception, e:
             raise e

     def excel_table(self,file, sheetName):
         u'''装载list'''
         data = self.open_excel(file)
         # 通过工作表名称，获取到一个工作表
         table = data.sheet_by_name(sheetName)
         # 获取行数
         Trows = table.nrows
         # 获取 第一行数据
         Tcolnames = table.row_values(0)
         lister = []
         for rownumber in range(1,Trows):
             row = table.row_values(rownumber)
             if row:
                 app = {}
                 for i in range(len(Tcolnames)):
                     app[Tcolnames[i]] = row[i]
                 lister.append(app)
         return lister

     def get_list(self,sheetname):
         try:
             data_list = self.excel_table(self.test_data_path, sheetname)
             assert len(data_list)>=0,u'excel标签页:'+sheetname+u'为空'
             return data_list
         except Exception as e:
             raise e

test.py

 # coding:utf-8
 __author__ = 'Helen'
 '''
 project:ddt数据驱动
 '''
 import unittest,ddt
 from ExcelData import excel

 # 测试数据
 excel_data = excel()
 testdata = excel_data.get_list('userData')

 @ddt.ddt
 class TestDtt(unittest.TestCase):
     @classmethod
     def setUpClass(cls):
         print u'开始测试---------------'

     @ddt.data(*testdata)
     def test(self, data):
         print 'username:'+data['username']+',password:'+data['password']

     @classmethod
     def tearDownClass(cls):
         print u'结束测试------------------'

 if __name__=='__main__':
     unittest.main()