Update to Drupal 8.0.2. For more information, see https://www.drupal.org/drupal-8.0.2-release-notes

core/modules/language/src/Entity/ConfigurableLanguage.php

@@ -63,14 +63,14 @@ class ConfigurableLanguage extends ConfigEntityBase implements ConfigurableLangu
   /**
    * The direction of language, either DIRECTION_LTR or DIRECTION_RTL.
    *
-   * @var integer
+   * @var int
    */
   protected $direction = self::DIRECTION_LTR;
 
   /**
    * The weight of the language, used in lists of languages.
    *
-   * @var integer
+   * @var int
    */
   protected $weight = 0;
 

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

@@ -28,7 +28,7 @@ class EntityDefaultLanguageTest extends KernelTestBase {
   /**
    * {@inheritdoc}
    */
-  public function setUp() {
+  protected function setUp() {
     parent::setUp();
 
     $this->installEntitySchema('user');

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

@@ -117,7 +117,7 @@ class LanguageConfigurationElementTest extends WebTestBase {
     $this->assertTrue($configurable_language->isDefault(), 'The en language entity is flagged as the default language.');
 
     $this->config('system.site')->set('default_langcode', 'cc')->save();
-    ContentLanguageSettings::loadByEntityTypeBundle('entity_test','custom_bundle')
+    ContentLanguageSettings::loadByEntityTypeBundle('entity_test', 'custom_bundle')
       ->setLanguageAlterable(TRUE)
       ->setDefaultLangcode(LanguageInterface::LANGCODE_SITE_DEFAULT)
       ->save();

core/modules/language/src/Tests/Views/FilterLanguageTest.php

@@ -45,6 +45,18 @@ class FilterLanguageTest extends LanguageTestBase {
         'name' => $name,
       ));
       $this->assertIdenticalResultset($view, $expected, array('views_test_data_name' => 'name'));
+
+      $expected = [
+        '***LANGUAGE_site_default***',
+        '***LANGUAGE_language_interface***',
+        '***LANGUAGE_language_content***',
+        'en',
+        'xx-lolspeak',
+        'und',
+        'zxx'
+      ];
+      $this->assertIdentical(array_keys($view->filter['langcode']->getValueOptions()), $expected);
+
       $view->destroy();
     }
   }