获取css的属性值

# -*- coding:utf-8 -*-

"""
在元素上执行双击操作
"""

from selenium import webdriver
from selenium.webdriver import ActionChains
import unittest

class Actions_Element_Click(unittest.TestCase):
    def setUp(self):        
        self.driver = webdriver.Firefox()
        self.driver.get(r'F:电子书seleniumSelenium Testing Tools Cookbook(中文)demoDoubleClickDemo.html')
    
    def test_element_double_click(self):
        driver = self.driver
        message = driver.find_element_by_id('message')
        
        # message.value_of_css_property('font-size'): 获取css的属性值
        self.assertEqual('14px', message.value_of_css_property('font-size'))
        action_chains = ActionChains(driver)
        action_chains.double_click(message).perform()       #鼠标双击动作
        
        self.assertEqual('20px', message.value_of_css_property('font-size'))
        
    def tearDown(self):
        self.driver.quit()