A Configuration Option for being able to retain container between requests

features/bootstrap/FeatureContext.php

@@ -34,6 +34,21 @@ public function prepareProcess()
         $this->process = new Process(null);
     }
 
+
+    /**
+     * @Given I have not configured behat to use shared kernel
+     */
+    public function iHaveNotConfiguredBehatToUseSharedKernel()
+    {
+    }
+
+    /**
+     * @Given I have configured behat to use shared kernel
+     */
+    public function iHaveConfiguredBehatToUseSharedKernel()
+    {
+    }
+
     /**
      * Runs behat command with provided parameters
      *

features/shared_kernel.feature

@@ -0,0 +1,22 @@
+Feature: Sharing Behat's kernel with the application if config stipulates
+
+    In order to be able to re-use in-memory services between scenario steps
+    As a Symfony feature tester
+    I need to be able to share Behat's DI container with the app
+
+    Scenario: Fails to retain service when shared kernel set to false
+        Given I have not configured behat to use shared kernel
+        When I run "behat -s web -p no-shared-kernel --no-colors '@BehatSf2DemoBundle/services.feature'"
+        Then it should fail
+        And the output should contain:
+          """
+          -'Jim'
+          """
+
+    Scenario: Does retain service when shared kernel set to true
+        Given I have configured behat to use shared kernel
+        When I run "behat -s web -p shared-kernel --no-colors '@BehatSf2DemoBundle/services.feature'"
+        Then it should pass with:
+          """
+          1 scenario (1 passed)
+          """

src/Behat/Symfony2Extension/Driver/KernelDriver.php

@@ -12,6 +12,7 @@
 namespace Behat\Symfony2Extension\Driver;
 
 use Behat\Mink\Driver\BrowserKitDriver;
+use Symfony\Component\HttpKernel\Client;
 use Symfony\Component\HttpKernel\KernelInterface;
 
 /**
@@ -21,8 +22,12 @@
  */
 class KernelDriver extends BrowserKitDriver
 {
-    public function __construct(KernelInterface $kernel, $baseUrl = null)
+    public function __construct(KernelInterface $kernel, $baseUrl = null, $shared = false)
     {
-        parent::__construct($kernel->getContainer()->get('test.client'), $baseUrl);
+        $client = (true === $shared) ?
+            new Client($kernel) :
+            $kernel->getContainer()->get('test.client');
+
+        parent::__construct($client, $baseUrl);
     }
 }

src/Behat/Symfony2Extension/ServiceContainer/Driver/SymfonyFactory.php

@@ -59,6 +59,7 @@ public function buildDriver(array $config)
         return new Definition('Behat\Symfony2Extension\Driver\KernelDriver', array(
             new Reference(Symfony2Extension::KERNEL_ID),
             '%mink.base_url%',
+            '%symfony2_extension.kernel.shared%'
         ));
     }
 }

src/Behat/Symfony2Extension/ServiceContainer/Symfony2Extension.php

@@ -80,6 +80,12 @@ public function configure(ArrayNodeDefinition $builder)
                             ->end()
                             ->defaultTrue()
                         ->end()
+                        ->booleanNode('shared')
+                            ->beforeNormalization()
+                                ->ifString()->then($boolFilter)
+                            ->end()
+                            ->defaultFalse()
+                        ->end()
                     ->end()
                 ->end()
                 ->arrayNode('context')
@@ -180,6 +186,7 @@ private function loadKernel(ContainerBuilder $container, array $config)
         $container->setDefinition(self::KERNEL_ID, $definition);
         $container->setParameter(self::KERNEL_ID . '.path', $config['path']);
         $container->setParameter(self::KERNEL_ID . '.bootstrap', $config['bootstrap']);
+        $container->setParameter(self::KERNEL_ID . '.shared', $config['shared']);
     }
 
     private function loadSuiteGenerator(ContainerBuilder $container, array $config)

testapp/app/config/config.yml

@@ -1,3 +1,6 @@
+imports:
+    - { resource: services.yml }
+
 framework:
     secret:          test_blah
     router:

testapp/app/config/routing.yml

@@ -1,3 +1,7 @@
 test:
     path:  /
     defaults: { _controller: BehatSf2DemoBundle:Test:index }
+
+test-service:
+    path:  /set-name/{name}
+    defaults: { _controller: BehatSf2DemoBundle:Test:setName }

testapp/app/config/services.yml

@@ -0,0 +1,3 @@
+services:
+    name.service:
+        class: Behat\Sf2DemoBundle\Service\NameService

testapp/behat.yml

@@ -14,7 +14,7 @@ default:
             type: symfony_bundle
             bundle: 'BehatSf2DemoBundle'
             filters:
-                tags: '~@web'
+                tags: '~@web && ~@shared-kernel'
         web:
             type: symfony_bundle
             contexts:
@@ -30,6 +30,28 @@ default:
                       - "%%kernel.environment%%"
                       - "%%kernel.debug%%"
                       - "%%kernel.name%%"
+                    nameService: '@name.service'
+
             bundle: 'BehatSf2DemoBundle'
             filters:
-                tags: '@web'
+                tags: '@web && ~@shared-kernel'
+
+shared-kernel:
+    extensions:
+        Behat\Symfony2Extension:
+            kernel:
+                shared: true
+    suites:
+        web:
+            filters:
+                tags: '@shared-kernel'
+
+no-shared-kernel:
+    extensions:
+        Behat\Symfony2Extension:
+            kernel:
+                shared: false
+    suites:
+        web:
+            filters:
+                tags: '@shared-kernel'

testapp/src/Behat/Sf2DemoBundle/Controller/TestController.php

@@ -26,4 +26,11 @@ public function indexAction(Request $request)
 RESPONSE
         );
     }
+
+    public function setNameAction($name)
+    {
+        $this->container->get('name.service')->setName($name);
+
+        return new Response();
+    }
 }

testapp/src/Behat/Sf2DemoBundle/Features/Context/WebContext.php

@@ -3,16 +3,24 @@
 namespace Behat\Sf2DemoBundle\Features\Context;
 
 use Behat\MinkExtension\Context\MinkContext;
+use Behat\Sf2DemoBundle\Service\NameService;
 use Behat\Symfony2Extension\Context\KernelAwareContext;
+use PHPUnit\Framework\Assert;
 use Symfony\Component\HttpFoundation\Session\Session;
 use Symfony\Component\HttpKernel\KernelInterface;
 
 class WebContext extends MinkContext implements KernelAwareContext
 {
     private $kernel;
+
+    /**
+     * @var NameService
+     */
+    private $nameService;
 
-    public function __construct(Session $session, $simpleParameter, $simpleArg, array $services, array $params)
+    public function __construct(Session $session, $simpleParameter, $simpleArg, array $services, array $params, NameService $nameService)
     {
+        $this->nameService = $nameService;
     }
 
     /**
@@ -25,4 +33,29 @@ public function setKernel(KernelInterface $kernel)
     {
         $this->kernel = $kernel;
     }
+
+    /**
+     * @Given I have a service set to :name
+     */
+    public function iHaveANameService($name)
+    {
+        $this->nameService->setName($name);
+    }
+
+    /**
+     * @When make a request setting name to :name
+     */
+    public function makeARequestSettingNameTo($name)
+    {
+        $this->visit('set-name/'.$name);
+    }
+
+    /**
+     * @Then the service value should have remained :name
+     * @Then the service value should have changed to :name
+     */
+    public function theServiceValueShouldRemain($name)
+    {
+        Assert::assertEquals($name, $this->nameService->getName());
+    }
 }

testapp/src/Behat/Sf2DemoBundle/Features/services.feature

@@ -0,0 +1,8 @@
+Feature: Retaining container between requests
+
+  @shared-kernel
+  Scenario: Service retains value between request and assertion for duration of scenario
+    Given I have a service set to "Jack"
+    And I am on "/"
+    When make a request setting name to "Jim"
+    Then the service value should have changed to "Jim"

testapp/src/Behat/Sf2DemoBundle/Service/NameService.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace Behat\Sf2DemoBundle\Service;
+
+class NameService
+{
+    /**
+     * @var string
+     */
+    private $name;
+
+    /**
+     * @param string $name
+     */
+    public function setName($name)
+    {
+        $this->name = $name;
+    }
+
+    /**
+     * @return string
+     */
+    public function getName()
+    {
+        return $this->name;
+    }
+}