断言方法

常见断言方式：

条件不成立则抛出异常信息

#格式1：assert+空格+条件语句+逗号+"报错信息"
assert 2==1,"断言失败，请检查"

#格式2：assert+空格+条件语句
assert 1==2


a=10
b=20
c=10
e = [10,20,30]
t = True
n = None
assert a==b,"断言失败，请检查"
assert a>b,"断言失败，请检查"
assert a in e,"断言失败，请检查"
assert t in True,"断言失败，请检查"
assert n in None,"断言失败，请检查"


#通过title判断是否成功
print(driver.current_url)   #获取登录成功后的url
title = driver.title
if title=='京东(JD.COM)-正品低价、品质保障、配送及时、轻松购物！':
    if '修仙大帝' in driver.page_source:     #判断登录成功后用户名是否在页面元素中
        if 'https://www.jd.com/'==driver.current_url:    #判断预期网址和实际网址是否一致
            print('登录成功')
        else:
            print('网址错误，登录失败')
    else:
        print('用户名错误，登录失败')
else:
    print('标题错误，登录失败')

　　方法截图：

#格式1：assert+空格+条件语句+逗号+"报错信息"
assert 2==1,"断言失败，请检查"

#格式2：assert+空格+条件语句
assert 1==2


a=10
b=20
c=10
e = [10,20,30]
t = True
n = None
assert a==b,"断言失败，请检查"
assert a>b,"断言失败，请检查"
assert a in e,"断言失败，请检查"
assert t in True,"断言失败，请检查"
assert n in None,"断言失败，请检查"


#通过title判断是否成功
print(driver.current_url)   #获取登录成功后的url
title = driver.title
if title=='京东(JD.COM)-正品低价、品质保障、配送及时、轻松购物！':
    if '修仙大帝' in driver.page_source:     #判断登录成功后用户名是否在页面元素中
if 'https://www.jd.com/'==driver.current_url:    #判断预期网址和实际网址是否一致
print('登录成功')
        else:
            print('网址错误，登录失败')
    else:
        print('用户名错误，登录失败')
else:
    print('标题错误，登录失败')