--- /dev/null
+<?php
+
+namespace Drupal\Tests\language\Functional;
+
+use Drupal\Tests\BrowserTestBase;
+
+/**
+ * Tests the content translation settings language selector options.
+ *
+ * @group language
+ */
+class LanguageSelectorTranslatableTest extends BrowserTestBase {
+
+ /**
+ * Modules to enable.
+ *
+ * @var array
+ */
+ public static $modules = [
+ 'language',
+ 'content_translation',
+ 'node',
+ 'comment',
+ 'field_ui',
+ 'entity_test',
+ 'locale',
+ ];
+
+ /**
+ * The user with administrator privileges.
+ *
+ * @var \Drupal\user\Entity\User;
+ */
+ public $administrator;
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function setUp() {
+ parent::setUp();
+
+ // Create user and set permissions.
+ $this->administrator = $this->drupalCreateUser($this->getAdministratorPermissions(), 'administrator');
+ $this->drupalLogin($this->administrator);
+ }
+
+ /**
+ * Returns an array of permissions needed for the translator.
+ */
+ protected function getAdministratorPermissions() {
+ return array_filter(
+ ['translate interface',
+ 'administer content translation',
+ 'create content translations',
+ 'update content translations',
+ 'delete content translations',
+ 'administer languages',
+ ]
+ );
+ }
+
+ /**
+ * Tests content translation language selectors are correctly translated.
+ */
+ public function testLanguageStringSelector() {
+ // Add another language.
+ $edit = ['predefined_langcode' => 'es'];
+ $this->drupalPostForm('admin/config/regional/language/add', $edit, t('Add language'));
+
+ // Translate the string English in Spanish (Inglés). Override config entity.
+ $name_translation = 'Inglés';
+ \Drupal::languageManager()
+ ->getLanguageConfigOverride('es', 'language.entity.en')
+ ->set('label', $name_translation)
+ ->save();
+
+ // Check content translation overview selector.
+ $path = 'es/admin/config/regional/content-language';
+ $this->drupalGet($path);
+
+ // Get en language from selector.
+ $elements = $this->xpath('//select[@id=:id]//option[@value=:option]', [':id' => 'edit-settings-user-user-settings-language-langcode', ':option' => 'en']);
+
+ // Check that the language text is translated.
+ $this->assertEqual($elements[0]->getText(), $name_translation, 'Checking the option string English is translated to Spanish.');
+ }
+
+}