diff --git a/core/modules/user/lib/Drupal/user/Tests/UserAdminLanguageTest.php b/core/modules/user/lib/Drupal/user/Tests/UserAdminLanguageTest.php
new file mode 100644
index 0000000..7737624
--- /dev/null
+++ b/core/modules/user/lib/Drupal/user/Tests/UserAdminLanguageTest.php
@@ -0,0 +1,145 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\user\Tests\UserAdminLanguageTest.
+ */
+
+namespace Drupal\user\Tests;
+
+use Drupal\simpletest\WebTestBase;
+
+/**
+ * Tests users' ability to change their own administration language.
+ */
+class UserAdminLanguageTest extends WebTestBase {
+
+  /**
+   * Administrator user for this test.
+   *
+   * @var \Drupal\user\Entity\User
+   */
+  protected $adminUser;
+
+  /**
+   * Non-administrator user for this test.
+   *
+   * @var \Drupal\user\Entity\User
+   */
+  protected $regularUser;
+
+  /**
+   * Modules to enable.
+   *
+   * @var array
+   */
+  public static $modules = array('user', 'language');
+
+  public static function getInfo() {
+    return array(
+      'name' => 'User administration pages language settings',
+      'description' => "Tests user's ability to change their administration pages language.",
+      'group' => 'User',
+    );
+  }
+
+  public function setUp() {
+    parent::setUp();
+    // User to add and remove language.
+    $this->adminUser = $this->drupalCreateUser(array('administer languages', 'access administration pages'));
+    // User to check non-admin access.
+    $this->regularUser = $this->drupalCreateUser();
+  }
+
+  /**
+   * Tests that admin language is not configurable in single language sites.
+   */
+  function testUserAdminLanguageConfigurationNotAvailableWithOnlyOneLanguage() {
+    $this->drupalLogin($this->adminUser);
+    $this->setLanguageNegotiation();
+    $path = 'user/' . $this->adminUser->id() . '/edit';
+    $this->drupalGet($path);
+    // Ensure administration pages language settings widget is not available.
+    $this->assertNoFieldByXPath($this->constructFieldXpath('id', 'edit-preferred-admin-langcode'), NULL, 'Administration pages language selector not available.');
+  }
+
+  /**
+   * Tests that admin language negotiation is configurable only if enabled.
+   */
+  function testUserAdminLanguageConfigurationAvailableWithAdminLanguageNegotiation() {
+    $this->drupalLogin($this->adminUser);
+    $this->addCustomLanguage();
+    $path = 'user/' . $this->adminUser->id() . '/edit';
+
+    // Checks with user administration pages language negotiation disabled.
+    $this->drupalGet($path);
+    // Ensure administration pages language settings widget is not available.
+    $this->assertNoFieldByXPath($this->constructFieldXpath('id', 'edit-preferred-admin-langcode'), NULL, 'Administration pages language selector not available.');
+
+    // Checks with user administration pages language negotiation enabled.
+    $this->setLanguageNegotiation();
+    $this->drupalGet($path);
+    // Ensure administration pages language settings widget is available.
+    $this->assertFieldByXPath($this->constructFieldXpath('id', 'edit-preferred-admin-langcode'), NULL, 'Administration pages language selector is available.');
+  }
+
+  /**
+   * Tests that the admin language is configurable only for administrators.
+   *
+   * If a user has the permission "access administration pages", they should
+   * be able to see the setting to pick the language they want those pages in.
+   *
+   * If a user does not have that permission, it would confusing for them to
+   * have a setting for pages they cannot access, so they should not be able to
+   * set a language for those pages.
+   */
+  function testUserAdminLanguageConfigurationAvailableIfAdminLanguageNegotiationIsEnabled() {
+    $this->drupalLogin($this->adminUser);
+    // Adds a new language, because with only one language, setting won't show.
+    $this->addCustomLanguage();
+    $this->setLanguageNegotiation();
+    $path = 'user/' . $this->adminUser->id() . '/edit';
+    $this->drupalGet($path);
+    // Ensure administration pages language setting is visible for admin.
+    $this->assertFieldByXPath($this->constructFieldXpath('id', 'edit-preferred-admin-langcode'), NULL, 'Administration pages language selector available for admins.');
+
+    // Ensure administration pages language setting is hidden for non-admins.
+    $this->drupalLogin($this->regularUser);
+    $path = 'user/' . $this->regularUser->id() . '/edit';
+    $this->drupalGet($path);
+    $this->assertNoFieldByXPath($this->constructFieldXpath('id', 'edit-preferred-admin-langcode'), NULL, 'Administration pages language selector not available for regular user.');
+  }
+
+  /**
+   * Sets the User interface negotiation detection method.
+   *
+   * Enables the "Account preference for administration pages" language
+   * detection method for the User interface language negotiation type.
+   */
+  function setLanguageNegotiation() {
+    $edit = array(
+      'language_interface[enabled][language-user-admin]' => TRUE,
+      'language_interface[enabled][language-url]' => TRUE,
+      'language_interface[weight][language-user-admin]' => -8,
+      'language_interface[weight][language-url]' => -10,
+    );
+    $this->drupalPostForm('admin/config/regional/language/detection', $edit, t('Save settings'));
+  }
+
+  /**
+   * Helper method for adding a custom language.
+   */
+  function addCustomLanguage() {
+    $langcode = 'xx';
+    // The English name for the language.
+    $name = $this->randomName(16);
+    $edit = array(
+      'predefined_langcode' => 'custom',
+      'langcode' => $langcode,
+      'name' => $name,
+      'direction' => '0',
+    );
+    $this->drupalPostForm('admin/config/regional/language/add', $edit, t('Add custom language'));
+  }
+
+}