Provide simple BrowserKit integration

features/browserkit_integration/browserkit_integration.feature

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+Feature: BrowserKit integration
+
+    Background:
+        Given a working Symfony application with SymfonyExtension configured
+        And a Behat configuration containing:
+        """
+        default:
+            suites:
+                default:
+                    contexts:
+                        - App\Tests\SomeContext
+        """
+        And a feature file containing:
+        """
+        Feature:
+            Scenario:
+                When I visit the page "/hello-world"
+                Then I should see "Hello world!" on the page
+
+            # Doubling the scenario to account for some weird error
+            Scenario:
+                When I visit the page "/hello-world"
+                Then I should see "Hello world!" on the page
+        """
+        And a context file "tests/SomeContext.php" containing:
+        """
+        <?php
+
+        namespace App\Tests;
+
+        use Behat\Behat\Context\Context;
+        use FriendsOfBehat\SymfonyExtension\Mink\MinkParameters;
+        use Psr\Container\ContainerInterface;
+        use Symfony\Component\BrowserKit\Client;
+
+        final class SomeContext implements Context {
+            private $client;
+
+            public function __construct(Client $client)
+            {
+                $this->client = $client;
+            }
+
+            /** @When I visit the page :page */
+            public function visitPage(string $page): void
+            {
+                $this->client->request('GET', $page);
+            }
+
+            /** @Then I should see :content on the page */
+            public function shouldSeeContentOnPage(string $content): void
+            {
+                assert(false !== strpos($this->client->getResponse()->getContent(), $content));
+            }
+        }
+        """
+
+    Scenario: Injecting BrowserKit client
+        Given a YAML services file containing:
+            """
+            services:
+                App\Tests\SomeContext:
+                    public: true
+                    arguments:
+                        - '@test.client'
+            """
+        When I run Behat
+        Then it should pass
+
+    Scenario: Autowiring and autoconfiguring BrowserKit client
+        Given a YAML services file containing:
+            """
+            services:
+                _defaults:
+                    autowire: true
+                    autoconfigure: true
+
+                App\Tests\SomeContext: ~
+            """
+        When I run Behat
+        Then it should pass