diff --git a/core/modules/system/src/Tests/Installer/InstallerTranslationMultipleLanguageTest.php b/core/modules/system/src/Tests/Installer/InstallerTranslationMultipleLanguageTest.php
index e7b8e9c..9d607b0 100644
--- a/core/modules/system/src/Tests/Installer/InstallerTranslationMultipleLanguageTest.php
+++ b/core/modules/system/src/Tests/Installer/InstallerTranslationMultipleLanguageTest.php
@@ -17,14 +17,35 @@
 class InstallerTranslationMultipleLanguageTest extends InstallerTestBase {
 
   /**
-   * Overrides the language code in which to install Drupal.
-   *
-   * @var string
+   * Add a setting to instruct the testing profile to add languages.
    */
-  protected $langcode = 'de';
+  protected function setUpTestingLanguages() {
+    // Need to add both Spanish and German configurable language explicitly
+    // because the installer language is English.
+    $this->settings = array(
+      'testing_add_languages' => array(
+        0 => (object) array(
+          'value' => 'es',
+          'required' => TRUE,
+        ),
+        1 => (object) array(
+          'value' => 'de',
+          'required' => TRUE,
+        ),
+      ),
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp() {
+    $this->setUpTestingLanguages();
+    parent::setUp();
+  }
 
   /**
-   * Overrides InstallerTest::setUpLanguage().
+   * {@inheritdoc}
    */
   protected function setUpLanguage() {
     // Place custom local translations in the translations directory.
@@ -33,17 +54,34 @@ protected function setUpLanguage() {
     file_put_contents(DRUPAL_ROOT . '/' . $this->siteDirectory . '/files/translations/drupal-8.0.0.es.po', "msgid \"\"\nmsgstr \"\"\nmsgid \"Save and continue\"\nmsgstr \"Save and continue Spanish\"");
 
     parent::setUpLanguage();
-    $this->translations['Save and continue'] = 'Save and continue German';
   }
 
   /**
    * Tests that translations for each language were loaded.
    */
   public function testTranslationsLoaded() {
-    // Verify de and es languages were created.
+    // Verify German and Spanish were configured.
+    $this->drupalGet('admin/config/regional/language');
+    $this->assertText('German');
+    $this->assertText('Spanish');
+    // If the installer was English, we expect that configured also.
+    if ($this->langcode == 'en') {
+      $this->assertText('English');
+    }
 
     // Verify the strings from the translation files were imported.
-
+    $edit = array();
+    $edit['langcode'] = 'de';
+    $edit['translation'] = 'translated';
+    $edit['string'] = 'Save and continue';
+    $this->drupalPostForm('admin/config/regional/translate', $edit, t('Filter'));
+    $this->assertText('Save and continue German');
+    $edit = array();
+    $edit['langcode'] = 'es';
+    $edit['translation'] = 'translated';
+    $edit['string'] = 'Save and continue';
+    $this->drupalPostForm('admin/config/regional/translate', $edit, t('Filter'));
+    $this->assertText('Save and continue Spanish');
   }
 
 }
diff --git a/core/modules/system/src/Tests/Installer/InstallerTranslationMultipleLanguageForeignTest.php b/core/modules/system/src/Tests/Installer/InstallerTranslationMultipleLanguageForeignTest.php
new file mode 100644
index 0000000..e4ada83
--- /dev/null
+++ b/core/modules/system/src/Tests/Installer/InstallerTranslationMultipleLanguageForeignTest.php
@@ -0,0 +1,50 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\system\Tests\Installer\InstallerTranslationMultipleLanguageForeignTest.
+ */
+
+namespace Drupal\system\Tests\Installer;
+
+use Drupal\simpletest\InstallerTestBase;
+
+/**
+ * Tests translation files for multiple languages get imported during install.
+ *
+ * @group Installer
+ */
+class InstallerTranslationMultipleLanguageForeignTest extends InstallerTranslationMultipleLanguageTest {
+
+  /**
+   * Overrides the language code in which to install Drupal.
+   *
+   * @var string
+   */
+  protected $langcode = 'de';
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUpTestingLanguages() {
+    // Only need to add a Spanish configurable language explicitly because
+    // German will already be added via the installer language.
+    $this->settings = array(
+      'testing_add_languages' => array(
+        0 => (object) array(
+          'value' => 'es',
+          'required' => TRUE,
+        ),
+      ),
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUpLanguage() {
+    parent::setUpLanguage();
+    $this->translations['Save and continue'] = 'Save and continue German';
+  }
+
+}
diff --git a/core/profiles/testing/testing.install b/core/profiles/testing/testing.install
new file mode 100644
index 0000000..ef2b5ed
--- /dev/null
+++ b/core/profiles/testing/testing.install
@@ -0,0 +1,23 @@
+<?php
+/**
+ * @file
+ * Install, update and uninstall functions for the testing installation profile.
+ */
+
+/**
+ * Implements hook_install().
+ *
+ * Perform actions to set up the site for this profile.
+ *
+ * @see system_install()
+ */
+function testing_install() {
+  // Tests may instruct the testing profile to add languages in the install
+  // process to test the installer's interaction with multiple languages.
+  if (!empty($GLOBALS['testing_add_languages'])) {
+    foreach($GLOBALS['testing_add_languages'] as $langcode) {
+      $language = ConfigurableLanguage::createFromLangcode($langcode);
+      $language->save();
+    }
+  }
+}