使用 Jenkins、selenium-grid 和量角器进行 e2e 测试

Question

我正在尝试使用 Jenkins、Selenium 和 Protractor 构建我的测试环境。我决定使用 selenium-plugin（硒网格）在远程机器（节点）之间分派测试。到目前为止，我实现的是在 selenium hub 和节点之间建立连接。

Jenkins 上安装的 Node.js 版本是 5.12.0，Protractor 是 3.3.0。我还安装了npm chromedriver 并在 protractor.config.js 中设置了该驱动程序的路径，例如：

chromeDriver: '/u01/apps/jenkins/data/tools/jenkins.plugins.nodejs.tools.NodeJSInstallation/NodeJS_5.12.0/lib/node_modules/chromedriver/bin/chromedriver'

节点正在运行 selenium-standalone 服务器，使用 npm 全局安装。

当我执行 protractor.config.js 文件时，出现以下错误：

    protractor /u01/apps/jenkins/data/workspace/Servers/testApp/protractor.conf.js
[14:49:08] I/direct - Using ChromeDriver directly...
[14:49:08] I/launcher - Running 1 instances of WebDriver

/u01/apps/jenkins/data/tools/jenkins.plugins.nodejs.tools.NodeJSInstallation/NodeJS_5.12.0/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/promise.js:1329
      return callbackFn(this.value_);
             ^
Error: Server terminated early with status 127
    at Error (native)
    at /u01/apps/jenkins/data/tools/jenkins.plugins.nodejs.tools.NodeJSInstallation/NodeJS_5.12.0/lib/node_modules/protractor/node_modules/selenium-webdriver/remote/index.js:210:20
    at Promise.invokeCallback_ (/u01/apps/jenkins/data/tools/jenkins.plugins.nodejs.tools.NodeJSInstallation/NodeJS_5.12.0/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/promise.js:1329:14)
    at TaskQueue.execute_ (/u01/apps/jenkins/data/tools/jenkins.plugins.nodejs.tools.NodeJSInstallation/NodeJS_5.12.0/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/promise.js:2790:14)
    at TaskQueue.executeNext_ (/u01/apps/jenkins/data/tools/jenkins.plugins.nodejs.tools.NodeJSInstallation/NodeJS_5.12.0/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/promise.js:2773:21)
    at /u01/apps/jenkins/data/tools/jenkins.plugins.nodejs.tools.NodeJSInstallation/NodeJS_5.12.0/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/promise.js:2652:27
    at /u01/apps/jenkins/data/tools/jenkins.plugins.nodejs.tools.NodeJSInstallation/NodeJS_5.12.0/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/promise.js:639:7
    at process._tickCallback (internal/process/next_tick.js:103:7)
From: Task: WebDriver.createSession()
    at acquireSession (/u01/apps/jenkins/data/tools/jenkins.plugins.nodejs.tools.NodeJSInstallation/NodeJS_5.12.0/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/webdriver.js:62:22)
    at Function.createSession (/u01/apps/jenkins/data/tools/jenkins.plugins.nodejs.tools.NodeJSInstallation/NodeJS_5.12.0/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/webdriver.js:295:12)
    at Driver (/u01/apps/jenkins/data/tools/jenkins.plugins.nodejs.tools.NodeJSInstallation/NodeJS_5.12.0/lib/node_modules/protractor/node_modules/selenium-webdriver/chrome.js:778:38)
    at Direct.getNewDriver (/u01/apps/jenkins/data/tools/jenkins.plugins.nodejs.tools.NodeJSInstallation/NodeJS_5.12.0/lib/node_modules/protractor/built/driverProviders/direct.js:65:26)
    at Runner.createBrowser (/u01/apps/jenkins/data/tools/jenkins.plugins.nodejs.tools.NodeJSInstallation/NodeJS_5.12.0/lib/node_modules/protractor/built/runner.js:182:43)
    at /u01/apps/jenkins/data/tools/jenkins.plugins.nodejs.tools.NodeJSInstallation/NodeJS_5.12.0/lib/node_modules/protractor/built/runner.js:255:30
    at _fulfilled (/u01/apps/jenkins/data/tools/jenkins.plugins.nodejs.tools.NodeJSInstallation/NodeJS_5.12.0/lib/node_modules/protractor/node_modules/q/q.js:834:54)
    at self.promiseDispatch.done (/u01/apps/jenkins/data/tools/jenkins.plugins.nodejs.tools.NodeJSInstallation/NodeJS_5.12.0/lib/node_modules/protractor/node_modules/q/q.js:863:30)
    at Promise.promise.promiseDispatch (/u01/apps/jenkins/data/tools/jenkins.plugins.nodejs.tools.NodeJSInstallation/NodeJS_5.12.0/lib/node_modules/protractor/node_modules/q/q.js:796:13)
    at /u01/apps/jenkins/data/tools/jenkins.plugins.nodejs.tools.NodeJSInstallation/NodeJS_5.12.0/lib/node_modules/protractor/node_modules/q/q.js:556:49
[14:49:08] E/launcher - Process exited with error code 1

这是我的量角器配置文件：

exports.config = {
    directConnect: true,
    chromeDriver: '/u01/apps/jenkins/data/tools/jenkins.plugins.nodejs.tools.NodeJSInstallation/NodeJS_5.12.0/lib/node_modules/chromedriver/bin/chromedriver',
    framework: 'jasmine',
    capabilities: {
        'browserName': 'chrome',
        shardTestFiles: true,
        maxInstances: 3
    },
    specs: ['test/test_spec.js'],
    jasmineNodeOpts: {
        showColors: true,
        defaultTimeoutInterval: 30000,
    },
    seleniumAddress: 'http://HUB_IP:4444/wd/hub',
    onPrepare: function() {
        browser.driver.manage().window().maximize();
    },
    plugins: [{
        package: 'protractor-console',
        logLevels: ['severe', 'debug', 'info', 'warning']
    }]
};

Answer 1

您需要directConnect: false,，这样它将通过seleniumAddress: 'http://HUB_IP:4444/wd/hub', 使用selenium 服务器，并且假设您在Jenkins 上，可能处于无头模式，我建议您使用docker-selenium

启动本地网格

CONTAINER_ID="grid_$BUILD_NUMBER"
docker run -d --name=$CONTAINER_ID -v /dev/shm:/dev/shm elgalu/selenium

等待它开始

docker exec $CONTAINER_ID wait_all_done 40s

抢IP

export HUB_IP=$(docker inspect -f='{{.NetworkSettings.IPAddress}}' $CONTAINER_ID)

运行你的测试

protractor testApp/protractor.conf.js