DevToolsActivePort file doesn‘t exist

1，Windows上写的RobotFramework的WebUI脚本，能够正常运行。导出脚本上传到Linux，在Linux系统下robot命令执行报错，如下图：

[root@c-gksk-node03-dev yangxu_case]# robot cc
==============================================================================
Cc                                                                            
==============================================================================
Cc.Cc1                                                                        
==============================================================================
cc11                                                                  | FAIL |
WebDriverException: Message: unknown error: Chrome failed to start: exited abnormally.
  (unknown error: DevToolsActivePort file doesn't exist)
  (The process started from chrome location /usr/bin/google-chrome is no longer running, so ChromeDriver is assuming that Chrome has crashed.)

2，原因：需要对浏览器设置header，设置为无头模式。浏览器的无头（headless）模式。

3，解决办法：

3.1，如下图，在windows里，使用第8到12步可以通过谷歌浏览直接打开百度，然后输入和查询，最后关闭浏览器，完成一个自动化测试。 但是脚本导出到Linux执行就会报错。   

3.2，这个时候对浏览器进行设置，如图，另外添加第1到7步，以及使用之前第9到12步（也就是把第8步注释掉）。直接在windows上运行，可以通过。导出脚本到Linux执行也能通过了。

对应代码

*** Settings ***
Library           Selenium2Library
 
*** Test Cases ***
cc11
    ${chrome_options}    Evaluate    selenium.webdriver.ChromeOptions()    modules=selenium,selenium.webdriver
    Call Method    ${chrome_options}    add_argument    --headless
    Call Method    ${chrome_options}    add_argument    --no-sandbox    // “–no - sandbox”参数是让Chrome在root权限下跑
    Call Method    ${chrome_options}    add_argument    disable-gpu
    Create Webdriver    Chrome    chrome_options=${chrome_options}
    Maximize Browser Window
    go to    https://www.baidu.com/
    #open Browser    https://www.baidu.com/    Chrome
    Input Text    id=kw    xx
    click Button    id=su
    sleep    2
    close Browser

4，参数介绍

5，linux下执行

[root@c-gksk-node03-dev yangxu_case]# robot -d /opt/robotframework/yangxu_case/jieguo  /opt/robotframework/yangxu_case/cc

其中-d 代表把log.html、report.html、output.xml这三个文件保存到/opt/robotframework/yangxu_case/jieguo目录；

其它的命令参数可以通过robot --help查询尝试

[root@c-gksk-node03-dev yangxu_case]# ll
total 452
drwxr-xr-x 2 root root     55 Jul 20 15:10 api
drwxr-xr-x 2 root root     43 Jul 21 11:03 cc
drwxr-xr-x 2 root root     59 Jul 21 13:52 jieguo
[root@c-gksk-node03-dev yangxu_case]# robot -d /opt/robotframework/yangxu_case/jieguo  /opt/robotframework/yangxu_case/cc
==============================================================================
Cc                                                                            
==============================================================================
Cc.Cc1                                                                        
==============================================================================
cc11                                                                  | PASS |
------------------------------------------------------------------------------
Cc.Cc1                                                                | PASS |
1 critical test, 1 passed, 0 failed
1 test total, 1 passed, 0 failed
==============================================================================
Cc                                                                    | PASS |
1 critical test, 1 passed, 0 failed
1 test total, 1 passed, 0 failed
==============================================================================
Output:  /opt/robotframework/yangxu_case/jieguo/output.xml
Log:     /opt/robotframework/yangxu_case/jieguo/log.html
Report:  /opt/robotframework/yangxu_case/jieguo/report.html
[root@c-gksk-node03-dev yangxu_case]# 

参考：

https://www.5axxw.com/questions/content/vv7nev

Robot Framework自动化测试----浏览器的无头（headless)模式和命令行运行脚本_weixin_39430584的博客-CSDN博客_浏览器无头模式

不可错过的自动化测试框架：robotframework之WebDriver功能配置 - 知乎