--- /dev/null
+<?php
+
+/*
+ * This file is part of the Behat.
+ * (c) Konstantin Kudryashov <ever.zet@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Behat\Behat\Tester\Runtime;
+
+use Behat\Behat\Tester\ScenarioTester;
+use Behat\Gherkin\Node\FeatureNode;
+use Behat\Gherkin\Node\ScenarioInterface as Scenario;
+use Behat\Testwork\Environment\Environment;
+use Behat\Testwork\Environment\EnvironmentManager;
+use Behat\Testwork\Tester\Result\IntegerTestResult;
+use Behat\Testwork\Tester\Result\TestResult;
+use Behat\Testwork\Tester\Result\TestWithSetupResult;
+use Behat\Testwork\Tester\Setup\SuccessfulSetup;
+use Behat\Testwork\Tester\Setup\SuccessfulTeardown;
+
+/**
+ * Scenario tester that isolates the environment for each scenario.
+ *
+ * @author Konstantin Kudryashov <ever.zet@gmail.com>
+ */
+final class IsolatingScenarioTester implements ScenarioTester
+{
+ /**
+ * @var ScenarioTester
+ */
+ private $decoratedTester;
+ /**
+ * @var EnvironmentManager
+ */
+ private $envManager;
+
+ /**
+ * Initialises tester.
+ *
+ * @param ScenarioTester $decoratedTester
+ * @param EnvironmentManager $envManager
+ */
+ public function __construct(ScenarioTester $decoratedTester, EnvironmentManager $envManager)
+ {
+ $this->decoratedTester = $decoratedTester;
+ $this->envManager = $envManager;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function setUp(Environment $env, FeatureNode $feature, Scenario $scenario, $skip)
+ {
+ return new SuccessfulSetup();
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function test(Environment $env, FeatureNode $feature, Scenario $scenario, $skip)
+ {
+ $isolatedEnvironment = $this->envManager->isolateEnvironment($env, $scenario);
+
+ $setup = $this->decoratedTester->setUp($isolatedEnvironment, $feature, $scenario, $skip);
+ $localSkip = !$setup->isSuccessful() || $skip;
+ $testResult = $this->decoratedTester->test($isolatedEnvironment, $feature, $scenario, $localSkip);
+ $teardown = $this->decoratedTester->tearDown($isolatedEnvironment, $feature, $scenario, $localSkip, $testResult);
+
+ $integerResult = new IntegerTestResult($testResult->getResultCode());
+
+ return new TestWithSetupResult($setup, $integerResult, $teardown);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function tearDown(Environment $env, FeatureNode $feature, Scenario $scenario, $skip, TestResult $result)
+ {
+ return new SuccessfulTeardown();
+ }
+}