Question

我正在尝试使用selenium设置selenium和docker的浏览器测试。

我遇到的主要问题是运行测试时的可靠性。

有时我可以连接并且能够很好地运行测试，但很多时候我都不能。

看起来非常不一致，我启动容器并运行测试，第一次失败，再次运行，第二次运行并且工作正常。

一旦我重新启动selenium-hub并再次运行测试，它（大多数情况下）就可以了。

感谢您的帮助。

我得到的一个常见错误是：

  Could not open connection: session not created exception
  from disconnected: unable to connect to renderer
    (Session info: chrome=61.0.3163.91)
    (Driver info: chromedriver=2.32.498513 (2c63aa53b2c658de596ed550eb5267ec5967b351),platform=Linux 4.4.0-96-generic x86_64) (WARNING: The server did not provide any stacktrace information)
  Command duration or timeout: 411 milliseconds
  Build info: version: '3.5.3', revision: 'a88d25fe6b', time: '2017-08-29T12:54:15.039Z'
  System info: host: 'e0218fe24a14', ip: '172.18.0.6', os.name: 'Linux', os.arch: 'amd64', os.version: '4.4.0-96-generic', java.version: '1.8.0_131'
  Driver info: driver.version: unknown (Behat\Mink\Exception\DriverException)

搬运工-compose.yml

version: '2'
services:
    db:
        build:
            context: .
            dockerfile: DockerfileDb
        container_name: db
        ports:
            - "3396:3306"
        environment:
            - MYSQL_ROOT_PASSWORD=password

    web:
        build:
            context: .
            dockerfile: DockerfileWeb
        depends_on:
            - db
        container_name: web
        ports:
            - "8080:80"
        links:
            - db
            - selenium-hub
        environment: 
            - LOCALHOST_DOCKER=db
            - MYSQL_USER=root
            - MYSQL_PASSWORD=password
        volumes:
            - ./conf/rsyslog.conf:/etc/rsyslog.d/rsyslog-custom.conf        
            - ./:/var/www
            - ./sites-enabled:/etc/apache2/sites-enabled
            - ./conf/hosts:/etc/hosts

    selenium-hub:
        container_name: selenium_hub
        image: selenium/hub
        ports:
            - "4444:4444"

    chrome:
        container_name: selenium_node_chrome
        image: selenium/node-chrome
        volumes:
            - /dev/shm:/dev/shm # Mitigates the Chromium issue described at https://code.google.com/p/chromium/issues/detail?id=519952
        links:
            - selenium-hub
            - web
        environment:
            - HUB_PORT_4444_TCP_ADDR=selenium-hub
            - HUB_PORT_4444_TCP_PORT=4444
        volumes:
            - ./conf/hosts_selenium:/etc/hosts
        depends_on:
            - selenium-hub
        shm_size: 1g

    firefox:
        container_name: selenium_node_firefox
        image: selenium/node-firefox
        links:
            - selenium-hub
            - web
        environment:
            - HUB_PORT_4444_TCP_ADDR=selenium-hub
            - HUB_PORT_4444_TCP_PORT=4444
        volumes:
            - ./conf/hosts_selenium:/etc/hosts
        depends_on:
            - selenium-hub

behat.yml

default:
    extensions:
        Laracasts\Behat:
            # env_path: .env.behat
        Behat\MinkExtension:
            base_url: http://**********:8080/
            default_session: laravel
            laravel: ~
            selenium2:
                wd_host: http://selenium_node_chrome:5555/wd/hub
                capabilities: {'platform': 'LINUX', 'browser': 'chrome'}
            browser_name: chrome

login.feature

@mink:selenium2
Feature: login
    Users should be able to login

  Scenario: Login Successfully                   # features/Login.feature:5
    When I wait 1 seconds                        # FeatureContext::iWaitSeconds()
      Could not open connection: session not created exception
      from disconnected: unable to connect to renderer
        (Session info: chrome=61.0.3163.91)
        (Driver info: chromedriver=2.32.498513 (2c63aa53b2c658de596ed550eb5267ec5967b351),platform=Linux 4.4.0-96-generic x86_64) (WARNING: The server did not provide any stacktrace information)
      Command duration or timeout: 411 milliseconds
      Build info: version: '3.5.3', revision: 'a88d25fe6b', time: '2017-08-29T12:54:15.039Z'
      System info: host: 'e0218fe24a14', ip: '172.18.0.6', os.name: 'Linux', os.arch: 'amd64', os.version: '4.4.0-96-generic', java.version: '1.8.0_131'
      Driver info: driver.version: unknown (Behat\Mink\Exception\DriverException)
    Given I am on "/"                            # FeatureContext::visit()
    Then print current URL                       # FeatureContext::printCurrentUrl()
    Then take screenshot "test1.png"             # FeatureContext::takeScreenshot()
    Then I should not see "Whoops"               # FeatureContext::assertPageNotContainsText()
    And I should not see "ERR_NAME_NOT_RESOLVED" # FeatureContext::assertPageNotContainsText()
    Then take screenshot "login_test.png"

Answer 1

您可以尝试将Chrome驱动程序更新为最新版本，它适用于我： https://sites.google.com/a/chromium.org/chromedriver/downloads

Answer 2

我看到这个答案有很多观点，所以我想出了解决这个问题的方法。

因此，我在./conf/hosts_selenium:/etc/hosts中的每个selenium节点添加了一个卷（docker-compose.yml）。

...
chrome:
    container_name: selenium_node_chrome
    image: selenium/node-chrome
    volumes:
        - /dev/shm:/dev/shm # Mitigates the Chromium issue described at https://code.google.com/p/chromium/issues/detail?id=519952
        - ./conf/hosts_selenium:/etc/hosts
    links:
        - selenium-hub
        - web
    environment:
        - HUB_PORT_4444_TCP_ADDR=selenium-hub
        - HUB_PORT_4444_TCP_PORT=4444
    depends_on:
        - selenium-hub
    shm_size: 1g

firefox:
    container_name: selenium_node_firefox
    image: selenium/node-firefox
    links:
        - selenium-hub
        - web
    environment:
        - HUB_PORT_4444_TCP_ADDR=selenium-hub
        - HUB_PORT_4444_TCP_PORT=4444
    volumes:
        - ./conf/hosts_selenium:/etc/hosts
    depends_on:
        - selenium-hub
    shm_size: 2g

将主机文件添加到节点（./conf/hosts_selenium）：

#<ip-address>   <hostname.domain.org>   <hostname>
127.0.0.1       localhost.localdomain   localhost
::1             localhost.localdomain   localhost

这似乎解决了我的问题......很奇怪

Docker＆amp; Selenium无法连接到渲染器

2 个答案: