selenium - [ Selenium 网格] : Unable to launch Robot tests on remote machine

Question

我已经在本地计算机上设置了 Selenium 网格，并在远程计算机上设置了一个节点。

节点正在运行

java -jar selenium-server-standalone-3.8.1.jar -role node  -hub http://<hub_machine>:4444/grid/register

现在我已经编写了机器人测试来在远程计算机上运行脚本，如下所示:

Open Browser   google.com   chrome  None  http://<hub_machine>:4444/wd/hub  desired_capabilities=browserName:chrome,platform:WINDOWS

我还尝试使用远程 Webdriver，如下所示:

${executor}=    Evaluate    str('http://<hub_machine>:4444/wd/hub')
    ${desired capabilities}=    Evaluate    { "browserName": "chrome", "version": "", "platform": "VISTA", "javascriptEnabled": True}
    Create Webdriver    Remote    desired_capabilities=${desired capabilities}    command_executor=${executor} 

但是代码会抛出如下错误:

2018-02-20 13:33:41.655:WARN:osjs.HttpChannel:qtp662736689-13: /wd/hub/session java.io.IOException: org.openqa.grid.common.exception.GridException: Cannot extract a capabilities from the request: {"capabilities": {"alwaysMatch": {"version": "", "platform": "VISTA", "browserName": "chrome", "javascriptEnabled": true}, "firstMatch": []}, "desiredCapabilities": {"version": "", "platform": "VISTA", "browserName": "chrome", "javascriptEnabled": true}}

请建议如何解决此问题。

Answer 1

错误说明了一切:

/wd/hub/session java.io.IOException: org.openqa.grid.common.exception.GridException: Cannot extract a capabilities from the request: {"capabilities": {"alwaysMatch": {"version": "", "platform": "VISTA", "browserName": "chrome", "javascriptEnabled": true}, "firstMatch": []}, "desiredCapabilities": {"version": "", "platform": "VISTA", "browserName": "chrome", "javascriptEnabled": true}}

要启动Selenium 网格节点，您应该提供WebDriver 变体作为参数，如下所示:

• Mozilla Firefox :

  java -Dwebdriver.gecko.driver=geckodriver.exe -jar selenium-server-standalone-3.8.1.jar -role node -hub http://<hub_machine>:4444/grid/register
  

• Chrome :

  java -Dwebdriver.chrome.driver=chromedriver.exe -jar selenium-server-standalone-3.8.1.jar -role node -hub http://<hub_machine>:4444/grid/register
  

• Internet Explorer :

  java -Dwebdriver.ie.driver=IEDriverServer.exe -jar selenium-server-standalone-3.8.1.jar -role node -hub http://<hub_machine>:4444/grid/register
  

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更新

由于您仍然看到相同的错误，因此您需要:

• 提供完整的url包括协议(protocol) https://www.google.com (而不仅仅是 google.com )
• 从 IDE 中清理项目
• 使用CCleaner清除所有操作系统杂务的工具。
• 执行您的测试