Drupal 8.0.0 beta 12. More info: https://www.drupal.org/node/2514176

core/modules/language/src/Tests/LanguageTestBase.php

@@ -0,0 +1,47 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\language\Tests\LanguageTestBase.
+ */
+
+namespace Drupal\language\Tests;
+
+use Drupal\simpletest\KernelTestBase;
+
+/**
+ * Test for dependency injected language object.
+ */
+abstract class LanguageTestBase extends KernelTestBase {
+
+  public static $modules = array('system', 'language', 'language_test');
+  /**
+   * The language manager.
+   *
+   * @var \Drupal\Core\Language\LanguageManagerInterface
+   */
+  protected $languageManager;
+
+  /**
+   * The state storage service.
+   *
+   * @var \Drupal\Core\State\StateInterface
+   */
+  protected $state;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp() {
+    parent::setUp();
+
+    $this->installConfig(array('language'));
+
+    $this->state = $this->container->get('state');
+
+    // Ensure we are building a new Language object for each test.
+    $this->languageManager = $this->container->get('language_manager');
+    $this->languageManager->reset();
+  }
+
+}