4.4 更多选项
关于Selenium Grid更多命令选项，可运行--help查看：
d:\grid>java -jar selenium-server-standalone-3.5.0.jar --help Usage: <main class> [options] Options: --version, -version Displays the version and exits. Default: false -browserTimeout <Integer> in seconds : number of seconds a browser session is allowed to hang while a WebDriver command is running (example: driver.get(url)). If the timeout is reached while a WebDriver command is still processing, the session will quit. Minimum value is 60. An unspecified, zero, or negative value means wait indefinitely. Default: 0 -debug <Boolean> : enables LogLevel.FINE. Default: false -enablePassThrough <Boolean>: Whether or not to use the experimental passthrough mode. Defaults to true. Default: true -jettyThreads, -jettyMaxThreads <Integer> : max number of threads for Jetty. An unspecified, zero, or negative value means the Jetty default value (200) will be used. -log <String> filename : the filename to use for logging. If omitted, will log to STDOUT -port <Integer> : the port number the server will use. Default: 4444 -role <String> options are [hub], [node], or [standalone]. Default: standalone -timeout, -sessionTimeout <Integer> in seconds : Specifies the timeout before the server automatically kills a session that hasn't had any activity in the last X seconds. The test slot will then be released for another test to use. This is typically used to take care of client crashes. For grid hub/node roles, cleanUpCycle must also be set. Default: 1800 |
5. Selenium Grid 分布式测试脚本
下面，我们编写一个Selenium Grid自动化测试脚本，分别在3个node上运行Chrome,Firefox及IE浏览器，执行WEB页面自动化测试。
示例脚本如下：
# coding:utf-8 from selenium.webdriver import Remote import time # 定义node_hub与浏览器对应关系 nodes = { 'http://127.0.0.1:5555/wd/hub': 'chrome', 'http://127.0.0.1:5556/wd/hub': 'internet explorer', 'http://127.0.0.1:5557/wd/hub': 'firefox' } # 通过不同的浏览器执行测试脚本 for host, browser in nodes.items(): print(host, browser) # 调用remote方法 driver = Remote(command_executor=host, desired_capabilities={'platform': 'ANY', 'browserName': browser, 'version': '', 'javascriptEnabled': True}) # 打开百度首页并搜索词语，最后判断搜索跳转页面标题是否含有搜索词 wd = 'lovesoo' driver.get('https://www.baidu.com') driver.find_element_by_id("kw").send_keys(wd) driver.find_element_by_id("su").click() time.sleep(1) assert wd in driver.title, '{0} not in {1}'.format(wd, driver.title.encode('utf-8')) driver.quit() |
运行结果如下：
('http://127.0.0.1:5555/wd/hub', 'chrome') ('http://127.0.0.1:5557/wd/hub', 'firefox') ('http://127.0.0.1:5556/wd/hub', 'internet explorer') |
6. 常见问题
脚本运行过程中若IE浏览器报错找不到元素，而Chrome及Firefox浏览器正常，原因是IE浏览器的保护模式没有关闭：
1) 打开IE浏览器，在浏览器的菜单栏上点击“工具”选项，然后点击“Internet选项”
2) 在“Internet选项”中，切换到“安全”选项，取消“启用保护模式”的勾选
3) 并且上面四个区域的保护模式都需要关闭
