symfony - Behat/Mink 与 Selenium 2 次抛出 "Could not open connection"

Question

我已经开始使用 Behat、Mink Extension、Selenium 2 和 Symfony 编写验收测试。我已按照说明进行操作，可以在此处查看:http://extensions.behat.org/mink/

如果我想用“./bin/behat”开始我的第一个功能，它会说:

christian@christian-VirtualBox:/var/www/wiglee$ ./bin/behat 
Feature: User Registration
  In order to use ProjectNameHere
  As a user
  I should be able to register

  @javascript
  Scenario: User Registration                 # features/user.registration.feature:7
    Given I register as "test@test.com" # InheritedFeatureContext::registerAs()
      Could not open connection
    And I logout                              # InheritedFeatureContext::logout()

1 scenario (1 failed)
2 steps (1 skipped, 1 failed)

我启动了 selenium 服务器，输出告诉我连接应该没问题:

信息:收到创建新 session 的请求:{platform=ANY、browserVersion=8、browserName=firefox、deviceType=tablet、name=Behat test、selenium-version=2.31.0、browser=firefox ，deviceOrientation=portrait，version=8，max-duration=300}

我如何启动 Selenium Hub:

java -jar ./selenium-server-standalone-2.39.0.jar -role hub

我如何添加 Selenium 节点(本地和主机之间没有“.”):

java -jar ./selenium-server-standalone-2.39.0.jar -role 节点-hub http://local.host:4444/grid/register

这是我的 behat.yml:

default:
  context:
    parameters:
      browser: firefox
    class:  'InheritedFeatureContext'
  extensions:
    SensioLabs\Behat\PageObjectExtension\Extension: ~
    Behat\MinkExtension\Extension:
      base_url:  'http://localhost/nameofproject/web/app_dev.php'
      selenium2: ~
      default_session: 'selenium2'

# No context:
no_context:
  paths:
    bootstrap: 'NON_EXISTING_FOLDER'
  filters:
    tags:      '~@javascript'

# Context based on inheritance:
inheritance:
  context:
    class:      'InheritedFeatureContext'

# Context based on traits:
traits:
  paths:
    bootstrap:  'features/php54_bootstrap'
  context:
    class:      'TraitedFeatureContext'

# Context based on subcontexting:
subcontexts:
  context:
    class:      'SubcontextedFeatureContext'

这是详细输出:

Given I register as "test@test.com" # InheritedFeatureContext::registerAs()
      exception 'WebDriver\Exception\UnknownError' with message 'Error forwarding the new session Empty pool of VM for setup {platform=ANY, browserVersion=8, browserName=firefox, deviceType=tablet, name=Behat test, selenium-version=2.31.0, browser=firefox, deviceOrientation=portrait, version=8, max-duration=300}' in vendor/instaclick/php-webdriver/lib/WebDriver/Exception.php:157
      Stack trace:
      #0 vendor/instaclick/php-webdriver/lib/WebDriver/AbstractWebDriver.php(140): WebDriver\Exception::factory(13, 'Error forwardin...')
      #1 vendor/instaclick/php-webdriver/lib/WebDriver/WebDriver.php(76): WebDriver\AbstractWebDriver->curl('POST', '/session', Array, Array)
      #2 vendor/behat/mink-selenium2-driver/src/Behat/Mink/Driver/Selenium2Driver.php(260): WebDriver\WebDriver->session('firefox', Array)
      #3 vendor/behat/mink/src/Behat/Mink/Session.php(62): Behat\Mink\Driver\Selenium2Driver->start()
      #4 vendor/behat/mink/src/Behat/Mink/Mink.php(114): Behat\Mink\Session->start()
      #5 vendor/sensiolabs/behat-page-object-extension/src/SensioLabs/Behat/PageObjectExtension/Context/PageFactory.php(71): Behat\Mink\Mink->getSession()
      #6 vendor/sensiolabs/behat-page-object-extension/src/SensioLabs/Behat/PageObjectExtension/Context/PageObjectContext.php(27): SensioLabs\Behat\PageObjectExtension\Context\PageFactory->createPage('Registration')
      #7 features/bootstrap/InheritedFeatureContext.php(27): SensioLabs\Behat\PageObjectExtension\Context\PageObjectContext->getPage('Registration')
      #8 [internal function]: InheritedFeatureContext->registerAs('cbergau86@gmail...')
      #9 vendor/behat/behat/src/Behat/Behat/Definition/Annotation/Definition.php(155): call_user_func_array(Array, Array)
      #10 vendor/behat/behat/src/Behat/Behat/Tester/StepTester.php(157): Behat\Behat\Definition\Annotation\Definition->run(Object(InheritedFeatureContext))
      #11 vendor/behat/behat/src/Behat/Behat/Tester/StepTester.php(126): Behat\Behat\Tester\StepTester->executeStepDefinition(Object(Behat\Gherkin\Node\StepNode), Object(Behat\Behat\Definition\Annotation\Given))
      #12 vendor/behat/behat/src/Behat/Behat/Tester/StepTester.php(95): Behat\Behat\Tester\StepTester->executeStep(Object(Behat\Gherkin\Node\StepNode))
      #13 vendor/behat/gherkin/src/Behat/Gherkin/Node/AbstractNode.php(42): Behat\Behat\Tester\StepTester->visit(Object(Behat\Gherkin\Node\StepNode))
      #14 vendor/behat/behat/src/Behat/Behat/Tester/ScenarioTester.php(148): Behat\Gherkin\Node\AbstractNode->accept(Object(Behat\Behat\Tester\StepTester))
      #15 vendor/behat/behat/src/Behat/Behat/Tester/ScenarioTester.php(87): Behat\Behat\Tester\ScenarioTester->visitStep(Object(Behat\Gherkin\Node\StepNode), Object(Behat\Gherkin\Node\ScenarioNode), Object(InheritedFeatureContext), Array, false)
      #16 vendor/behat/gherkin/src/Behat/Gherkin/Node/AbstractNode.php(42): Behat\Behat\Tester\ScenarioTester->visit(Object(Behat\Gherkin\Node\ScenarioNode))
      #17 vendor/behat/behat/src/Behat/Behat/Tester/FeatureTester.php(88): Behat\Gherkin\Node\AbstractNode->accept(Object(Behat\Behat\Tester\ScenarioTester))
      #18 vendor/behat/gherkin/src/Behat/Gherkin/Node/AbstractNode.php(42): Behat\Behat\Tester\FeatureTester->visit(Object(Behat\Gherkin\Node\FeatureNode))
      #19 vendor/behat/behat/src/Behat/Behat/Console/Command/BehatCommand.php(150): Behat\Gherkin\Node\AbstractNode->accept(Object(Behat\Behat\Tester\FeatureTester))
      #20 vendor/behat/behat/src/Behat/Behat/Console/Command/BehatCommand.php(128): Behat\Behat\Console\Command\BehatCommand->runFeatures(Object(Behat\Gherkin\Gherkin))
      #21 vendor/symfony/symfony/src/Symfony/Component/Console/Command/Command.php(241): Behat\Behat\Console\Command\BehatCommand->execute(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
      #22 vendor/symfony/symfony/src/Symfony/Component/Console/Application.php(881): Symfony\Component\Console\Command\Command->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
      #23 vendor/symfony/symfony/src/Symfony/Component/Console/Application.php(191): Symfony\Component\Console\Application->doRunCommand(Object(Behat\Behat\Console\Command\BehatCommand), Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
      #24 vendor/behat/behat/src/Behat/Behat/Console/BehatApplication.php(68): Symfony\Component\Console\Application->doRun(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
      #25 vendor/symfony/symfony/src/Symfony/Component/Console/Application.php(121): Behat\Behat\Console\BehatApplication->doRun(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
      #26 vendor/behat/behat/bin/behat(32): Symfony\Component\Console\Application->run()
      #27 {main}

      Next exception 'Behat\Mink\Exception\DriverException' with message 'Could not open connection' in vendor/behat/mink-selenium2-driver/src/Behat/Mink/Driver/Selenium2Driver.php:262
      Stack trace:
      #0 vendor/behat/mink/src/Behat/Mink/Session.php(62): Behat\Mink\Driver\Selenium2Driver->start()
      #1 vendor/behat/mink/src/Behat/Mink/Mink.php(114): Behat\Mink\Session->start()
      #2 vendor/sensiolabs/behat-page-object-extension/src/SensioLabs/Behat/PageObjectExtension/Context/PageFactory.php(71): Behat\Mink\Mink->getSession()
      #3 vendor/sensiolabs/behat-page-object-extension/src/SensioLabs/Behat/PageObjectExtension/Context/PageObjectContext.php(27): SensioLabs\Behat\PageObjectExtension\Context\PageFactory->createPage('Registration')
      #4 features/bootstrap/InheritedFeatureContext.php(27): SensioLabs\Behat\PageObjectExtension\Context\PageObjectContext->getPage('Registration')
      #5 [internal function]: InheritedFeatureContext->registerAs('cbergau86@gmail...')
      #6 vendor/behat/behat/src/Behat/Behat/Definition/Annotation/Definition.php(155): call_user_func_array(Array, Array)
      #7 vendor/behat/behat/src/Behat/Behat/Tester/StepTester.php(157): Behat\Behat\Definition\Annotation\Definition->run(Object(InheritedFeatureContext))
      #8 vendor/behat/behat/src/Behat/Behat/Tester/StepTester.php(126): Behat\Behat\Tester\StepTester->executeStepDefinition(Object(Behat\Gherkin\Node\StepNode), Object(Behat\Behat\Definition\Annotation\Given))
      #9 vendor/behat/behat/src/Behat/Behat/Tester/StepTester.php(95): Behat\Behat\Tester\StepTester->executeStep(Object(Behat\Gherkin\Node\StepNode))
      #10 vendor/behat/gherkin/src/Behat/Gherkin/Node/AbstractNode.php(42): Behat\Behat\Tester\StepTester->visit(Object(Behat\Gherkin\Node\StepNode))
      #11 vendor/behat/behat/src/Behat/Behat/Tester/ScenarioTester.php(148): Behat\Gherkin\Node\AbstractNode->accept(Object(Behat\Behat\Tester\StepTester))
      #12 vendor/behat/behat/src/Behat/Behat/Tester/ScenarioTester.php(87): Behat\Behat\Tester\ScenarioTester->visitStep(Object(Behat\Gherkin\Node\StepNode), Object(Behat\Gherkin\Node\ScenarioNode), Object(InheritedFeatureContext), Array, false)
      #13 vendor/behat/gherkin/src/Behat/Gherkin/Node/AbstractNode.php(42): Behat\Behat\Tester\ScenarioTester->visit(Object(Behat\Gherkin\Node\ScenarioNode))
      #14 vendor/behat/behat/src/Behat/Behat/Tester/FeatureTester.php(88): Behat\Gherkin\Node\AbstractNode->accept(Object(Behat\Behat\Tester\ScenarioTester))
      #15 vendor/behat/gherkin/src/Behat/Gherkin/Node/AbstractNode.php(42): Behat\Behat\Tester\FeatureTester->visit(Object(Behat\Gherkin\Node\FeatureNode))
      #16 vendor/behat/behat/src/Behat/Behat/Console/Command/BehatCommand.php(150): Behat\Gherkin\Node\AbstractNode->accept(Object(Behat\Behat\Tester\FeatureTester))
      #17 vendor/behat/behat/src/Behat/Behat/Console/Command/BehatCommand.php(128): Behat\Behat\Console\Command\BehatCommand->runFeatures(Object(Behat\Gherkin\Gherkin))
      #18 vendor/symfony/symfony/src/Symfony/Component/Console/Command/Command.php(241): Behat\Behat\Console\Command\BehatCommand->execute(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
      #19 vendor/symfony/symfony/src/Symfony/Component/Console/Application.php(881): Symfony\Component\Console\Command\Command->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
      #20 vendor/symfony/symfony/src/Symfony/Component/Console/Application.php(191): Symfony\Component\Console\Application->doRunCommand(Object(Behat\Behat\Console\Command\BehatCommand), Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
      #21 vendor/behat/behat/src/Behat/Behat/Console/BehatApplication.php(68): Symfony\Component\Console\Application->doRun(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
      #22 vendor/symfony/symfony/src/Symfony/Component/Console/Application.php(121): Behat\Behat\Console\BehatApplication->doRun(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
      #23 vendor/behat/behat/bin/behat(32): Symfony\Component\Console\Application->run()
      #24 {main}

这是我的composer.json:

"require": {
    "php": ">=5.3.3",
    "symfony/symfony": "2.4.*",
    "doctrine/orm": ">=2.2.3,<2.4-dev",
    "doctrine/doctrine-bundle": "1.2.*",
    "twig/extensions": "1.0.*",
    "symfony/assetic-bundle": "2.3.*",
    "symfony/swiftmailer-bundle": "2.3.*",
    "symfony/monolog-bundle": "2.3.*",
    "sensio/distribution-bundle": "2.3.*",
    "sensio/framework-extra-bundle": "2.3.*",
    "sensio/generator-bundle": "2.3.*",
    "incenteev/composer-parameter-handler": "~2.0",
    "friendsofsymfony/rest-bundle": "dev-master",
    "friendsofsymfony/user-bundle": "~2.0@dev",
    "jms/serializer-bundle": "dev-master",
    "behat/symfony2-extension": "*",
    "behat/mink-extension": "*",
    "behat/mink-browserkit-driver": "*",
    "behat/mink-selenium2-driver": "*",
    "behat/mink-goutte-driver": "*",
    "phpunit/phpunit": "3.7.*",
    "sensiolabs/behat-page-object-extension": "*",
    "jms/i18n-routing-bundle": "1.1.0",
    "knplabs/knp-menu-bundle": "v1.1.2",
    "friendsofsymfony/message-bundle": "dev-master"
},

Answer 1

我最近遇到了同样的问题，并设法让它与 selenium grid 一起工作。

我的案例中的问题与 Mink 发送的默认功能有关。集线器尝试找到合适的节点来运行，该节点将接受请求的功能。就我而言，问题是浏览器版本。当我将其设置为空字符串时，它终于起作用了:

# behat.yml
default:
  extensions:
    Behat\MinkExtension\Extension:
      base_url: 'http://localhost/'
      browser_name: phantomjs
      selenium2:
        wd_host: http://127.0.0.1:4444/wd/hub
        capabilities:
          version: ''

解决方案最初发布于:Running Behat in parallel with Selenium grid