在无头模式下使用 selenium chrome 节点时，Protractor 在页面上找不到 Angular

Question

我正在使用量角器说明来确定我可以使用我的无头浏览器。

所以按照说明...

conf.js

exports.config = {
  seleniumAddress: 'http://seleniumhub:4444/wd/hub',
  multiCapabilities: [
    {
        browserName: 'firefox',
        'moz:firefoxOptions': {
            args: [
                "--headless",
            ]
        }
    },
    {
        browserName: 'chrome',
        chromeOptions: {
            args: [
                // chrome will crash without this
                '--headless',
                "--disable-gpu",
            ]
        }

    }
  ],

  framework: 'jasmine2',
  jasmineNodeOpts: {
    showColors: true,
    defaultTimeoutInterval: 30000,
  },
  specs: ['todo-spec.js']
};

待办事项-spec.js

describe('angularjs homepage todo list', function() {
it('should add a todo', function() {
browser.get('https://angularjs.org');

element(by.model('todoList.todoText')).sendKeys('write first protractor test');
element(by.css('[value="add"]')).click();

var todoList = element.all(by.repeater('todo in todoList.todos'));
expect(todoList.count()).toEqual(3);
expect(todoList.get(2).getText()).toEqual('write first protractor test');

// You wrote your first test, cross it off the list
todoList.get(2).element(by.css('input')).click();
var completedAmount = element.all(by.css('.done-true'));
expect(completedAmount.count()).toEqual(2);
});
});

从我的节点 8.8.1 容器中运行

./node_modules/.bin/protractor conf.js

标准的东西真的很香草，因为我想找出罪魁祸首。

当测试运行 firefox 通过并且 chrome 失败并显示

E/protractor - Could not find Angular on page https://angularjs.org/ : retries looking for angular exceeded

有什么线索/想法/建议吗？

我的 "seleniumhub" 是一个带有 firefox 和 chrome 节点的 dockerised selenium 网格。一切都在版本 3.6.0.

版本总结...

节点 8.8.1 (docker)
硒集线器 3.6.0 (docker)
硒 Chrome 节点 3.6.0 (docker)
Selenium Firefox 节点 3.6.0 (docker)
量角器 5.2.0

还有我的docker-compose.yml

version: "3.2"
services:

  seleniumhub:
    image: selenium/hub:${SELENIUM_VERSION}
    networks:
      - private
    ports:
      - 4444:4444
    environment:
    # As integer, maps to "maxSession"
      GRID_MAX_SESSION: 10
    # In milliseconds, maps to "newSessionWaitTimeout"
      GRID_NEW_SESSION_WAIT_TIMEOUT: -1
    # As a boolean, maps to "throwOnCapabilityNotPresent"
      GRID_THROW_ON_CAPABILITY_NOT_PRESENT: 'true'
    # As an integer
      GRID_JETTY_MAX_THREADS: -1
    # In milliseconds, maps to "cleanUpCycle"
      GRID_CLEAN_UP_CYCLE: 5000
    # In seconds, maps to "browserTimeout"
      GRID_BROWSER_TIMEOUT: 0
    # In seconds, maps to "timeout"
      GRID_TIMEOUT: 30
    # Debug
      GRID_DEBUG: 'false'
    depends_on:
      - webserver

  firefoxnode:
    image: selenium/node-firefox${SELENIUM_DEBUG}:${SELENIUM_VERSION}
    networks:
      - private
    volumes:
      - /dev/urandom:/dev/random
      - .:/tmp/app:cached
    depends_on:
      - seleniumhub
    environment:
      HUB_PORT_4444_TCP_ADDR: seleniumhub
      HUB_PORT_4444_TCP_PORT: 4444
      # 
      NODE_MAX_SESSION: 10
      NODE_MAX_INSTANCES: 10

  chromenode:
    image: selenium/node-chrome${SELENIUM_DEBUG}:${SELENIUM_VERSION}
    networks:
      - private
    volumes:
      - /dev/urandom:/dev/random:ro
      - /dev/shm:/dev/shm:ro
      - .:/tmp/app:cached
    depends_on:
      - seleniumhub
    environment:
      HUB_PORT_4444_TCP_ADDR: seleniumhub
      HUB_PORT_4444_TCP_PORT: 4444
      # 
      NODE_MAX_SESSION: 10
      NODE_MAX_INSTANCES: 10

  node:
    depends_on:
      - seleniumhub

非常感谢

Answer 1

所以罪魁祸首是 /dev/urandom 和 /dev/shm 份额。如果他们被删除，一切正常。

selenium 2.53.1 需要这些，但当前版本不需要。

所以享受剩下的配置吧。它只是工作。 :)

在无头模式下使用 selenium chrome 节点时，Protractor 在页面上找不到 Angular

Protractor could not find Angular on page when using selenium chrome node in headless mode

selenium-chromedriver

protractor

google-chrome-headless