selenium+pthon----Grid2分布式执行测试脚本

原文出处：https://blog.csdn.net/real_tino/article/details/53467406

按步骤操作：

1.下载selenium server，本人用的selenium版本是3.141.0（可以在cmd窗口用命令查询：pip show selenium）,所以下载对应selenium-server-standalone-3.141.0.jar

2.grid配置文件，该文件负责提供主机和浏览器信息

def grid():
    d = {'http://127.0.0.1:4444/wd/hub' : 'firefox','http://127.0.0.1:5555/wd/hub' : 'chrome',
         }
    return d

3.下载完成后进入相应的目录中打开cmd，输入java -jar selenium-server-standalone-3.141.0.jar -role hub，这是万恶之源，先启它才能干后面的事。启动之后再打开一个cmd，输入java -jar selenium-server-standalone-3.141.0.jar -role node -port 5555，这是启动第一个node，指定端口5555，与grid配置文件中所写的端口一致。

4.测试脚本# encoding:utf-8

from selenium import webdriver
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
import time,os.path
import grid_module

for host,browser in grid_module.grid().items():
    driver = webdriver.Remote(
        command_executor=host,
        desired_capabilities={
            'platform':'ANY',
            'browserName':browser,
            'version':'',
            'javascriptEnabled':True
        }
    )
    driver.get("http://www.baidu.com")
    driver.find_element_by_id("kw").send_keys(u"中国")
    driver.find_element_by_id("su").click()
    time.sleep(3)
    if driver.title == u"中国_百度搜索":
        print("title匹配")
    else:
        print("title不匹配")
    driver.close()
5.在浏览器中打开：http://127.0.0.1:4444/grid/console，显示好下图所示就说明启动成功

6.执行测试脚本查看是否能启动配置的两个浏览器

  我配置了firefox和chrome两个浏览器，firefox能正常启动，但chrome启动报异常，还没有找到解决办法

title匹配
Traceback (most recent call last):
File "F:/HQL/源码学习/selenium Gird2/testcase.py", line 15, in <module>
'javascriptEnabled':True
File "E:pythonlibsite-packagesseleniumwebdriver emotewebdriver.py", line 157, in __init__
self.start_session(capabilities, browser_profile)
File "E:pythonlibsite-packagesseleniumwebdriver emotewebdriver.py", line 252, in start_session
response = self.execute(Command.NEW_SESSION, parameters)
File "E:pythonlibsite-packagesseleniumwebdriver emotewebdriver.py", line 321, in execute
self.error_handler.check_response(response)
File "E:pythonlibsite-packagesseleniumwebdriver emoteerrorhandler.py", line 242, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.SessionNotCreatedException: Message: Unable to create new service: ChromeDriverService
Build info: version: '3.141.0', revision: '2ecb7d9a', time: '2018-10-31T20:22:52'
System info: host: 'USER-20150818GG', ip: '172.16.13.49', os.name: 'Windows 7', os.arch: 'amd64', os.version: '6.1', java.version: '1.8.0_91'
Driver info: driver.version: unknown
Stacktrace: