Test isolating contexts

features/isolating_contexts.feature

@@ -0,0 +1,54 @@
+Feature: Isolating contexts
+
+    Scenario: Keeping contexts isolated between scenarios
+        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: First scenario
+                Then the property should be "shit happens"
+
+            Scenario: Second scenario
+                When I change the property to "shit does not happen"
+                Then the property should be "shit does not happen"
+
+            Scenario: Third scenario
+                Then the property should be "shit happens"
+        """
+        And a context file "tests/SomeContext.php" containing:
+        """
+        <?php
+
+        namespace App\Tests;
+
+        use Behat\Behat\Context\Context;
+        use Psr\Container\ContainerInterface;
+
+        final class SomeContext implements Context {
+            private $property = 'shit happens';
+
+            public function __construct(?ContainerInterface $container = null) { $this->container = $container; }
+
+            /** @When I change the property to :value */
+            public function changeProperty(string $value): void { $this->property = $value; }
+
+            /** @Then the property should be :expected*/
+            public function propertyShouldBe(string $expected): void { assert($this->property === $expected); }
+        }
+        """
+        And a YAML services file containing:
+            """
+            services:
+                App\Tests\SomeContext:
+                    public: true
+            """
+        When I run Behat
+        Then it should pass