当一个类中有多条用例,我们在执行的时候每执行一条用例就要重新打开一次浏览器操作,例如下:

start

test1

quit

start

test2

start

若我们使用@classmethod装饰器,就只需要打开一次浏览器,执行完用例后再关闭,例如下:

start

test1

test2

quit

 

代码:

from selenium import webdriver import unittest,time from selenium.webdriver.support import expected_conditions as EC class Test1(unittest.TestCase):     #测试类,是多个测试用例的集合,可以把一些相同的操作写成一个类 @classmethod     def setUpClass(cls):         cls.driver=webdriver.Chrome()         cls.driver.get("http://www.cnblogs.com/linbao/")         time.sleep(2)     def test_01(self):         u'''验证元素存在：博客园'''         locator = ("id", "blog_nav_sitehome")         text = u"博客园"         time.sleep(2)         result = EC.text_to_be_present_in_element(locator, text)(self.driver)         time.sleep(2)         self.assertTrue(result)     def test_02(self):         u'''验证元素存在：首页'''         locator = ("id", "blog_nav_myhome")         text = u"首页"         time.sleep(2)         result = EC.text_to_be_present_in_element(locator, text)(self.driver)         time.sleep(2)         self.assertTrue(result)  @classmethod     def tearDownClass(cls):         # 后置操作         time.sleep(2)         cls.driver.quit() if __name__=="__main__":     #运行主函数     unittest.main()