【转】python单例模式&selenium driver实现单例
一、使用装饰器实现单例def Singleton(cls):
_instance = {}
def _singleton(*args, **kargs):
if cls not in _instance:
_instance = cls(*args, **kargs)
return _instance
return _singleton
@Singleton
class A(object):
a = 1
def __init__(self, x=0):
self.x = x
a1 = A(2)
a2 = A(3)二、web自动化driver实现单例模式
2.1 编写单例模式的装饰器
singleton.py
#coding:utf-8
#单例模式函数，用来修饰类
def singleton(cls,*args,**kw):
instances = {}
def _singleton():
if cls not in instances:
instances = cls(*args,**kw)
return instances
return _singleton2.2 driver 使用装饰器，实现单例模式GetSeleniumDriver.py# -*- coding:utf-8 -*-
from selenium import webdriver
from singleton import singleton
@singleton
class GetSeleniumDriver(object):
def __init__(self):
self.driver = webdriver.Chrome()2.3 获取driver的实例，就是单例了
class My_task(RES):
def __init__(self):
self.driver=GetSeleniumDriver().driver
def Making_task_Button(self):
Making_task_Button=self.driver.find_element_by_xpath(RES.Making_task_Button_xpth)
return Making_task_Button
def Audit_task_Button(self):
Audit_task_Button=self.driver.find_element_by_xpath(RES.Audit_task_Button_xpth)
return Audit_task_Button三、在自动化项目中具体的应用
3.1项目结构
一、工具层 Utils1singleton.py 是单例装饰器#coding:utf-8
#单例模式函数，用来修饰类
def singleton(cls,*args,**kw):
instances = {}
def _singleton():
if cls not in instances:
instances = cls(*args,**kw)
return instances
return _singleton2 GetSeleniumDriver.pydriver实现单例# -*- coding:utf-8 -*-
from selenium import webdriver
from Utils.singleton import singleton
@singleton
class GetSeleniumDriver(object):
def __init__(self):
self.driver = webdriver.Chrome()二、页面元素层 TsetSharelabMy_task.py# -*- coding:utf-8 -*-
from Utils.GetSeleniumDriver import GetSeleniumDriver
class My_task():
def __init__(self):
self.driver=GetSeleniumDriver().driver
def Making_task_Button(self):
Making_task_Button=self.driver.find_element_by_xpath('/html/body/div/div/div/a')
return Making_task_Button
def Audit_task_Button(self):
Audit_task_Button=self.driver.find_element_by_xpath('/html/body/div/div/div/a')
return Audit_task_Button三、流程层把一步一步的动作，封装成一个业务流程BookCity_page_process.py# -*- coding:utf-8 -*-
from Utils.GetSeleniumDriver import GetSeleniumDriver
import time
class BookCity_page_process(object):
def __init__(self):
self.driver=GetSeleniumDriver().driver
def WeiBo_Loain_To_Share(self):
time.sleep(3)
self.driver.find_elements_by_class_name('W_input').pop(0).send_keys(123)
time.sleep(1)
self.driver.find_elements_by_class_name('W_input').pop(1).send_keys(456)四、case层 ，把业务逻辑组成一条条用例test_case.py#coding:utf-8
from time import sleep
from Utils.GetSeleniumDriver import GetSeleniumDriver
class CreativeBooks(unittest.TestCase):
@classmethod
def setUpClass(self):
self.driver = GetSeleniumDriver().driver
sleep(2)
@classmethod
def tearDownClass(self):
pass
def setUp(self):
self.driver = GetSeleniumDriver().driver
self.driver.get("http://t.com/")
self.driver.maximize_window()
sleep(1)
Creative_books().Creative_books_Button().click()
def tearDown(self):
self.driver.delete_all_cookies()
def testa(self):
#新建图书
Creative_books().CreatBook_Button().click()
#输入书名
Creative_books().Input_book_name().send_keys(u"A1一")
#保存书名
def testb(self):
first = self.driver.current_window_handle
Creative_books().Help_center_Button().click()
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