vsts 托管代理 docker 容器（ubuntu） - 无法运行夜间测试（连接到端口 4444 上的 127.0.0.1 时出错

Question

I am trying to run selenium tests in azure pipeline and running into errors The CICD pipeline is using VSTS hosted agent and building a Ubuntu docker container.

我的测试任务在 Docker 容器镜像构建并抛出以下错误之后运行。 不知道我错过了什么。

在我的 windows 机器上进行测试。

如果需要任何进一步的信息，请告诉我

任何好的夜表 docker 项目在那里请把它扔在这里。

2020-04-22T10:53:24.0632804Z - Connecting to 127.0.0.1 on port 4444...
2020-04-22T10:53:24.0633097Z 
2020-04-22T10:53:24.0633309Z    Response 500 POST /wd/hub/session (20137ms)
2020-04-22T10:53:24.0633973Z ⚠ Error connecting to 127.0.0.1 on port 4444.
2020-04-22T10:53:24.0634476Z   Error: An error occurred while retrieving a new session: "Timed out waiting for driver server to start."
2020-04-22T10:53:24.0635002Z        at endReadableNT (_stream_readable.js:1187:12)
2020-04-22T10:53:24.0635520Z        at processTicksAndRejections (internal/process/task_queues.js:84:21)
2020-04-22T10:53:24.0636178Z  Cannot write log file to /vsts/agent/_work/r2/a/_QA_IDLookUp/output/logs/selenium-server.log.
2020-04-22T10:53:24.0636541Z npm ERR! Test failed.  See above for more details.
2020-04-22T10:53:24.0637274Z 
2020-04-22T10:53:24.0638871Z > qa-idlookup@1.0.0 test /vsts/agent/_work/r2/a/_QA_IDLookUp
2020-04-22T10:53:24.0639529Z > nightwatch -e headlessChrome
2020-04-22T10:53:24.0639818Z 
2020-04-22T10:53:24.0639982Z 
2020-04-22T10:53:24.0640105Z 
2020-04-22T10:53:24.0640412Z [Specs/Inquire Driver] Test Suite
2020-04-22T10:53:24.0640807Z =================================
2020-04-22T10:53:24.0641034Z    {
2020-04-22T10:53:24.0641217Z      value: {
2020-04-22T10:53:24.0641411Z        error: [
2020-04-22T10:53:24.0642113Z          "Build info: version: '3.141.59', revision: 'e82be7d358', time: '2018-11-14T08:25:53'",
2020-04-22T10:53:24.0643143Z          "System info: host: '15e4d52e2df2', ip: '172.17.0.2', os.name: 'Linux', os.arch: 'amd64', os.version: '5.0.0-1031-azure', java.version: '1.8.0_241'",
2020-04-22T10:53:24.0644010Z          'Driver info: driver.version: unknown'
2020-04-22T10:53:24.0644276Z        ],
2020-04-22T10:53:24.0645537Z        message: 'Timed out waiting for driver server to start.'
2020-04-22T10:53:24.0645906Z      },
2020-04-22T10:53:24.0646113Z      status: 13
2020-04-22T10:53:24.0646394Z }

package.json：

{
  "name": "qa-idlookup",
  "version": "1.0.0",
  "description": "NightwatchJS with Selenium Server",
  "main": "index.js",
  "scripts": {
    "test": "nightwatch -e headlessChrome",
    "headless": "nightwatch -e headlessChrome",
    "chrome": "nightwatch -e chrome",
    "firefox": "nightwatch -e firefox",
    "edge": "nightwatch -e edge",
    "ie": "nightwatch -e ie",
    "all": "nightwatch -e headlessChrome,chrome,firefox,edge,ie",
    "update": "npx npm-check-updates -u && npm install"
  },
  "keywords": [
    "Nightwatch",
    "NightwatchJS",
    "Selenium"
  ],
  "author": "Raju",
  "license": "ISC",
  "devDependencies": {
    "chromedriver": "80.0.2",
    "easy-soap-request": "^3.2.2",
    "edgedriver": "^4.17134.1",
    "geckodriver": "^1.19.1",
    "iedriver": "^3.14.2",
    "nightwatch": "^1.3.4",
    "selenium-server": "^3.141.59",
    "xmldom": "^0.3.0"
  }
}

nightwatch.conf.js

const seleniumServer = require('selenium-server');
const chromeDriver = require('chromedriver');
const geckoDriver = require('geckodriver');
const ieDriver = require('iedriver');
const edgeDriver = require('edgedriver');

module.exports = {
  src_folders: ['src'],
  output_folder: 'output/reports',
  custom_commands_path: '',
  custom_assertions_path: '',
  page_objects_path: '',
  globals_path: '',
  live_output: false,
  disable_colors: false,
  parallel_process_delay: 10,
  "test_workers": {
    "enabled": false,
    "workers": "auto"
  },
  selenium: {
    start_process: true,
    start_session: false,
    server_path: seleniumServer.path,
    check_process_delay: 5000,
    log_path: 'output/logs',
    host: '127.0.0.1',
    port: 4444,
    cli_args: {
      "webdriver.chrome.driver": chromeDriver.path,
      "webdriver.gecko.driver": geckoDriver.path,
      "webdriver.ie.driver": ieDriver.path,
      "webdriver.edge.driver": edgeDriver.path
    }
  },
  test_settings: {
    skip_testcases_on_fail: false,
    end_session_on_fail: false,
    default: {
      "request_timeout_options": {
        "timeout": 10000
      },
      "screenshots": {
        "enabled": true,
        "on_failure": true,
        "on_error": false,
        "path": "output/screenshots"
      },
      desiredCapabilities: {
        browserName: 'chrome',
      }
    },
    headlessChrome: {
      desiredCapabilities: {
        browserName: 'chrome',
        javascriptEnabled: true,
        acceptSslCerts: true,
        chromeOptions: {
          w3c: false,
          args: ['headless', 'disable-gpu']
        }
      }
    },
    chrome: {
      desiredCapabilities: {
        browserName: 'chrome',
        javascriptEnabled: true,
        acceptSslCerts: true,
        chromeOptions: {
          w3c: false,
          args: ['disable-gpu']
        }
      }
    },
    firefox: {
      desiredCapabilities: {
        browserName: 'firefox',
        javascriptEnabled: true,
        acceptSslCerts: true,
        marionette: true
      }
    },
    edge: {
      desiredCapabilities: {
        browserName: 'MicrosoftEdge',
        javascriptEnabled: true,
      }
    },
    ie: {
      desiredCapabilities: {
        browserName: 'internet explorer',
        javascriptEnabled: true,
      }
    }
  }
};

Answer 1

自己为这个问题找到了解决方案。 对于曾经尝试相同的人，

请确保在 Docker Ubuntu 中安装了正确的二进制文件

1. The package.json chrome devdependancy is pulling.exe binary into the Docker ubuntu (looks like its an issue with chrome driver npm package)

2. 确保 Docker Ubuntu 上也安装了稳定的 linux 镀铬

3. Try to setup the project on a local Docker container first and get inside the docker container to debug it (Basically bash into the Docker container and try to run the tests there). 如果测试在那里正常运行，它们很可能应该在管道中正确运行

我计划很快写一个端到端的设置博客。 完成后我会在这里更新。