diff --git a/core/lib/Drupal/Core/Config/Entity/ConfigEntityBase.php b/core/lib/Drupal/Core/Config/Entity/ConfigEntityBase.php
index 68adee1..90837f9 100644
--- a/core/lib/Drupal/Core/Config/Entity/ConfigEntityBase.php
+++ b/core/lib/Drupal/Core/Config/Entity/ConfigEntityBase.php
@@ -83,9 +83,18 @@
   /**
    * The language code of the entity's default language.
    *
+   * Assumed to be English by default. ConfigEntityStorage will set an
+   * appropriate language when creating new entities. This default applies to
+   * imported default configuration where the language code is missing. Those
+   * should be assumed to be English. All configuration entities support third
+   * party settings, so even configuration entities that do not directly
+   * store settings involving text in a human language may have such third
+   * party settings attached. This means configuration entities should be in one
+   * of the configured languages or the built-in English.
+   *
    * @var string
    */
-  protected $langcode = LanguageInterface::LANGCODE_NOT_SPECIFIED;
+  protected $langcode = 'en';
 
   /**
    * Third party entity settings.
diff --git a/core/modules/action/tests/action_bulk_test/config/install/views.view.test_bulk_form.yml b/core/modules/action/tests/action_bulk_test/config/install/views.view.test_bulk_form.yml
index 8fa68aa..6727525 100644
--- a/core/modules/action/tests/action_bulk_test/config/install/views.view.test_bulk_form.yml
+++ b/core/modules/action/tests/action_bulk_test/config/install/views.view.test_bulk_form.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/block/tests/modules/block_test_views/test_views/views.view.test_view_block.yml b/core/modules/block/tests/modules/block_test_views/test_views/views.view.test_view_block.yml
index 18d3483..d0e4771 100644
--- a/core/modules/block/tests/modules/block_test_views/test_views/views.view.test_view_block.yml
+++ b/core/modules/block/tests/modules/block_test_views/test_views/views.view.test_view_block.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_view_block
diff --git a/core/modules/block/tests/modules/block_test_views/test_views/views.view.test_view_block2.yml b/core/modules/block/tests/modules/block_test_views/test_views/views.view.test_view_block2.yml
index 6117152..1a79010 100644
--- a/core/modules/block/tests/modules/block_test_views/test_views/views.view.test_view_block2.yml
+++ b/core/modules/block/tests/modules/block_test_views/test_views/views.view.test_view_block2.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/block_content/tests/modules/block_content_test_views/test_views/views.view.test_block_content_revision_id.yml b/core/modules/block_content/tests/modules/block_content_test_views/test_views/views.view.test_block_content_revision_id.yml
index 4b313f8..f2158b7 100644
--- a/core/modules/block_content/tests/modules/block_content_test_views/test_views/views.view.test_block_content_revision_id.yml
+++ b/core/modules/block_content/tests/modules/block_content_test_views/test_views/views.view.test_block_content_revision_id.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/block_content/tests/modules/block_content_test_views/test_views/views.view.test_block_content_revision_revision_id.yml b/core/modules/block_content/tests/modules/block_content_test_views/test_views/views.view.test_block_content_revision_revision_id.yml
index d921c59..e812ec2 100644
--- a/core/modules/block_content/tests/modules/block_content_test_views/test_views/views.view.test_block_content_revision_revision_id.yml
+++ b/core/modules/block_content/tests/modules/block_content_test_views/test_views/views.view.test_block_content_revision_revision_id.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/block_content/tests/modules/block_content_test_views/test_views/views.view.test_field_type.yml b/core/modules/block_content/tests/modules/block_content_test_views/test_views/views.view.test_field_type.yml
index c11426b..64d649f 100644
--- a/core/modules/block_content/tests/modules/block_content_test_views/test_views/views.view.test_field_type.yml
+++ b/core/modules/block_content/tests/modules/block_content_test_views/test_views/views.view.test_field_type.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/comment/tests/modules/comment_test_views/test_views/views.view.test_comment_rss.yml b/core/modules/comment/tests/modules/comment_test_views/test_views/views.view.test_comment_rss.yml
index a3ca208..146e3f4 100644
--- a/core/modules/comment/tests/modules/comment_test_views/test_views/views.view.test_comment_rss.yml
+++ b/core/modules/comment/tests/modules/comment_test_views/test_views/views.view.test_comment_rss.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/comment/tests/modules/comment_test_views/test_views/views.view.test_comment_user_uid.yml b/core/modules/comment/tests/modules/comment_test_views/test_views/views.view.test_comment_user_uid.yml
index 9b0b973..2104d70 100644
--- a/core/modules/comment/tests/modules/comment_test_views/test_views/views.view.test_comment_user_uid.yml
+++ b/core/modules/comment/tests/modules/comment_test_views/test_views/views.view.test_comment_user_uid.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/config/src/Tests/ConfigImporterTest.php b/core/modules/config/src/Tests/ConfigImporterTest.php
index 581b5c4..00c5a1f 100644
--- a/core/modules/config/src/Tests/ConfigImporterTest.php
+++ b/core/modules/config/src/Tests/ConfigImporterTest.php
@@ -32,7 +32,7 @@ class ConfigImporterTest extends KernelTestBase {
    *
    * @var array
    */
-  public static $modules = array('config_test', 'system', 'config_import_test');
+  public static $modules = array('config_test', 'system', 'config_import_test', 'config_test_language');
 
   protected function setUp() {
     parent::setUp();
@@ -539,4 +539,24 @@ function testIsInstallable() {
     $this->assertTrue($this->container->get('config.storage')->exists($config_name));
   }
 
+  /**
+   * Tests imported configuration entities with and without language information.
+   */
+  function testLanguage() {
+    // Test imported configuration with implicit language code.
+    $data = $this->container->get('config.storage.installer')->read('config_test.dynamic.dotted.english');
+    $this->assertTrue(!isset($data['langcode']));
+    $this->assertEqual(
+      $this->config('config_test.dynamic.dotted.english')->get('langcode'),
+      'en'
+    );
+
+    // Test imported configuration with explicit language code.
+    $data = $this->container->get('config.storage.installer')->read('config_test.dynamic.dotted.french');
+    $this->assertEqual($data['langcode'], 'fr');
+    $this->assertEqual(
+      $this->config('config_test.dynamic.dotted.french')->get('langcode'),
+      'fr'
+    );
+  }
 }
diff --git a/core/modules/config/tests/config_test_language/config/install/config_test.dynamic.dotted.english.yml b/core/modules/config/tests/config_test_language/config/install/config_test.dynamic.dotted.english.yml
new file mode 100644
index 0000000..3470aff
--- /dev/null
+++ b/core/modules/config/tests/config_test_language/config/install/config_test.dynamic.dotted.english.yml
@@ -0,0 +1,6 @@
+id: dotted.english
+label: Default
+weight: 0
+protected_property: Default
+# Used for testing default language code on imported config entities.
+# langcode: en
diff --git a/core/modules/config/tests/config_test_language/config/install/config_test.dynamic.dotted.french.yml b/core/modules/config/tests/config_test_language/config/install/config_test.dynamic.dotted.french.yml
new file mode 100644
index 0000000..9c43f67
--- /dev/null
+++ b/core/modules/config/tests/config_test_language/config/install/config_test.dynamic.dotted.french.yml
@@ -0,0 +1,5 @@
+id: dotted.french
+label: Default
+weight: 0
+protected_property: Default
+langcode: fr
diff --git a/core/modules/config/tests/config_test_language/config_test_language.info.yml b/core/modules/config/tests/config_test_language/config_test_language.info.yml
new file mode 100644
index 0000000..28d720b
--- /dev/null
+++ b/core/modules/config/tests/config_test_language/config_test_language.info.yml
@@ -0,0 +1,5 @@
+name: 'Configuration test languages'
+type: module
+package: Testing
+version: VERSION
+core: 8.x
diff --git a/core/modules/content_translation/tests/modules/content_translation_test_views/test_views/views.view.test_entity_translations_link.yml b/core/modules/content_translation/tests/modules/content_translation_test_views/test_views/views.view.test_entity_translations_link.yml
index 143d1f0..1767c67 100644
--- a/core/modules/content_translation/tests/modules/content_translation_test_views/test_views/views.view.test_entity_translations_link.yml
+++ b/core/modules/content_translation/tests/modules/content_translation_test_views/test_views/views.view.test_entity_translations_link.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/dblog/tests/modules/dblog_test_views/test_views/views.view.test_dblog.yml b/core/modules/dblog/tests/modules/dblog_test_views/test_views/views.view.test_dblog.yml
index 0a9e356..06dd35f 100644
--- a/core/modules/dblog/tests/modules/dblog_test_views/test_views/views.view.test_dblog.yml
+++ b/core/modules/dblog/tests/modules/dblog_test_views/test_views/views.view.test_dblog.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/entity_reference/tests/modules/entity_reference_test_views/test_views/views.view.test_entity_reference_view.yml b/core/modules/entity_reference/tests/modules/entity_reference_test_views/test_views/views.view.test_entity_reference_view.yml
index 9452bcb..c60ede7 100644
--- a/core/modules/entity_reference/tests/modules/entity_reference_test_views/test_views/views.view.test_entity_reference_view.yml
+++ b/core/modules/entity_reference/tests/modules/entity_reference_test_views/test_views/views.view.test_entity_reference_view.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_entity_reference_view
diff --git a/core/modules/field/tests/modules/field_test_config/config/install/field.field.entity_test.entity_test.field_test_import.yml b/core/modules/field/tests/modules/field_test_config/config/install/field.field.entity_test.entity_test.field_test_import.yml
index bce6cf7..0cfd11a 100644
--- a/core/modules/field/tests/modules/field_test_config/config/install/field.field.entity_test.entity_test.field_test_import.yml
+++ b/core/modules/field/tests/modules/field_test_config/config/install/field.field.entity_test.entity_test.field_test_import.yml
@@ -1,5 +1,5 @@
 id: entity_test.entity_test.field_test_import
-langcode: und
+langcode: en
 field_name: field_test_import
 entity_type: entity_test
 bundle: entity_test
diff --git a/core/modules/field/tests/modules/field_test_config/config/install/field.field.entity_test.entity_test.field_test_import_2.yml b/core/modules/field/tests/modules/field_test_config/config/install/field.field.entity_test.entity_test.field_test_import_2.yml
index f52930f..f73354f 100644
--- a/core/modules/field/tests/modules/field_test_config/config/install/field.field.entity_test.entity_test.field_test_import_2.yml
+++ b/core/modules/field/tests/modules/field_test_config/config/install/field.field.entity_test.entity_test.field_test_import_2.yml
@@ -1,5 +1,5 @@
 id: entity_test.entity_test.field_test_import_2
-langcode: und
+langcode: en
 field_name: field_test_import_2
 entity_type: entity_test
 bundle: entity_test
diff --git a/core/modules/field/tests/modules/field_test_config/config/install/field.field.entity_test.test_bundle.field_test_import_2.yml b/core/modules/field/tests/modules/field_test_config/config/install/field.field.entity_test.test_bundle.field_test_import_2.yml
index e95266a..75c856f 100644
--- a/core/modules/field/tests/modules/field_test_config/config/install/field.field.entity_test.test_bundle.field_test_import_2.yml
+++ b/core/modules/field/tests/modules/field_test_config/config/install/field.field.entity_test.test_bundle.field_test_import_2.yml
@@ -1,5 +1,5 @@
 id: entity_test.test_bundle.field_test_import_2
-langcode: und
+langcode: en
 field_name: field_test_import_2
 entity_type: entity_test
 bundle: test_bundle
diff --git a/core/modules/field/tests/modules/field_test_config/config/install/field.storage.entity_test.field_test_import.yml b/core/modules/field/tests/modules/field_test_config/config/install/field.storage.entity_test.field_test_import.yml
index 01e9b2a..8ef21e1 100644
--- a/core/modules/field/tests/modules/field_test_config/config/install/field.storage.entity_test.field_test_import.yml
+++ b/core/modules/field/tests/modules/field_test_config/config/install/field.storage.entity_test.field_test_import.yml
@@ -1,5 +1,5 @@
 id: entity_test.field_test_import
-langcode: und
+langcode: en
 field_name: field_test_import
 entity_type: entity_test
 type: text
diff --git a/core/modules/field/tests/modules/field_test_config/config/install/field.storage.entity_test.field_test_import_2.yml b/core/modules/field/tests/modules/field_test_config/config/install/field.storage.entity_test.field_test_import_2.yml
index 7ba8659..5064349 100644
--- a/core/modules/field/tests/modules/field_test_config/config/install/field.storage.entity_test.field_test_import_2.yml
+++ b/core/modules/field/tests/modules/field_test_config/config/install/field.storage.entity_test.field_test_import_2.yml
@@ -1,5 +1,5 @@
 id: entity_test.field_test_import_2
-langcode: und
+langcode: en
 field_name: field_test_import_2
 entity_type: entity_test
 type: text
diff --git a/core/modules/field/tests/modules/field_test_config/staging/field.field.entity_test.entity_test.field_test_import_staging.yml b/core/modules/field/tests/modules/field_test_config/staging/field.field.entity_test.entity_test.field_test_import_staging.yml
index 30768c0..0bf637c 100644
--- a/core/modules/field/tests/modules/field_test_config/staging/field.field.entity_test.entity_test.field_test_import_staging.yml
+++ b/core/modules/field/tests/modules/field_test_config/staging/field.field.entity_test.entity_test.field_test_import_staging.yml
@@ -1,6 +1,6 @@
 id: entity_test.entity_test.field_test_import_staging
 uuid: ea711065-6940-47cd-813d-618f64095481
-langcode: und
+langcode: en
 field_name: field_test_import_staging
 entity_type: entity_test
 bundle: entity_test
diff --git a/core/modules/field/tests/modules/field_test_config/staging/field.field.entity_test.test_bundle.field_test_import_staging_2.yml b/core/modules/field/tests/modules/field_test_config/staging/field.field.entity_test.test_bundle.field_test_import_staging_2.yml
index 447205d..1e77c84 100644
--- a/core/modules/field/tests/modules/field_test_config/staging/field.field.entity_test.test_bundle.field_test_import_staging_2.yml
+++ b/core/modules/field/tests/modules/field_test_config/staging/field.field.entity_test.test_bundle.field_test_import_staging_2.yml
@@ -1,6 +1,6 @@
 id: entity_test.test_bundle.field_test_import_staging_2
 uuid: f07794a2-d7cc-45b6-b40d-13cf021b5552
-langcode: und
+langcode: en
 field_name: field_test_import_staging_2
 entity_type: entity_test
 bundle: test_bundle
diff --git a/core/modules/field/tests/modules/field_test_config/staging/field.field.entity_test.test_bundle_2.field_test_import_staging_2.yml b/core/modules/field/tests/modules/field_test_config/staging/field.field.entity_test.test_bundle_2.field_test_import_staging_2.yml
index 282fc83..de66085 100644
--- a/core/modules/field/tests/modules/field_test_config/staging/field.field.entity_test.test_bundle_2.field_test_import_staging_2.yml
+++ b/core/modules/field/tests/modules/field_test_config/staging/field.field.entity_test.test_bundle_2.field_test_import_staging_2.yml
@@ -1,6 +1,6 @@
 id: entity_test.test_bundle_2.field_test_import_staging_2
 uuid: 49d6dd19-5097-443d-8f00-fc79525bebce
-langcode: und
+langcode: en
 field_name: field_test_import_staging_2
 entity_type: entity_test
 bundle: test_bundle_2
diff --git a/core/modules/field/tests/modules/field_test_config/staging/field.storage.entity_test.field_test_import_staging.yml b/core/modules/field/tests/modules/field_test_config/staging/field.storage.entity_test.field_test_import_staging.yml
index 4477f26..5c67c7b 100644
--- a/core/modules/field/tests/modules/field_test_config/staging/field.storage.entity_test.field_test_import_staging.yml
+++ b/core/modules/field/tests/modules/field_test_config/staging/field.storage.entity_test.field_test_import_staging.yml
@@ -1,6 +1,6 @@
 id: entity_test.field_test_import_staging
 uuid: 0bf654cc-f14a-4881-b94c-76959e47466b
-langcode: und
+langcode: en
 field_name: field_test_import_staging
 entity_type: entity_test
 type: text
diff --git a/core/modules/field/tests/modules/field_test_config/staging/field.storage.entity_test.field_test_import_staging_2.yml b/core/modules/field/tests/modules/field_test_config/staging/field.storage.entity_test.field_test_import_staging_2.yml
index 5460ecc..6113d7e 100644
--- a/core/modules/field/tests/modules/field_test_config/staging/field.storage.entity_test.field_test_import_staging_2.yml
+++ b/core/modules/field/tests/modules/field_test_config/staging/field.storage.entity_test.field_test_import_staging_2.yml
@@ -1,6 +1,6 @@
 id: entity_test.field_test_import_staging_2
 uuid: 2165d9aa-9a0c-41a1-be02-2a49f3405c00
-langcode: und
+langcode: en
 field_name: field_test_import_staging_2
 entity_type: entity_test
 type: text
diff --git a/core/modules/field/tests/modules/field_test_views/test_views/views.view.test_view_fieldapi.yml b/core/modules/field/tests/modules/field_test_views/test_views/views.view.test_view_fieldapi.yml
index 2be1275..e5098e3 100644
--- a/core/modules/field/tests/modules/field_test_views/test_views/views.view.test_view_fieldapi.yml
+++ b/core/modules/field/tests/modules/field_test_views/test_views/views.view.test_view_fieldapi.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/field/tests/src/Unit/FieldConfigEntityUnitTest.php b/core/modules/field/tests/src/Unit/FieldConfigEntityUnitTest.php
index 992f698..6904110 100644
--- a/core/modules/field/tests/src/Unit/FieldConfigEntityUnitTest.php
+++ b/core/modules/field/tests/src/Unit/FieldConfigEntityUnitTest.php
@@ -243,7 +243,7 @@ public function testToArray() {
       'id' => 'test_entity_type.test_bundle.field_test',
       'uuid' => NULL,
       'status' => TRUE,
-      'langcode' => LanguageInterface::LANGCODE_NOT_SPECIFIED,
+      'langcode' => 'en',
       'field_name' => 'field_test',
       'entity_type' => 'test_entity_type',
       'bundle' => 'test_bundle',
diff --git a/core/modules/file/tests/modules/file_test_views/test_views/views.view.file_extension_view.yml b/core/modules/file/tests/modules/file_test_views/test_views/views.view.file_extension_view.yml
index 6f07b0c..a8351f7 100644
--- a/core/modules/file/tests/modules/file_test_views/test_views/views.view.file_extension_view.yml
+++ b/core/modules/file/tests/modules/file_test_views/test_views/views.view.file_extension_view.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: file_extension_view
diff --git a/core/modules/file/tests/modules/file_test_views/test_views/views.view.test_file_user_file_data.yml b/core/modules/file/tests/modules/file_test_views/test_views/views.view.test_file_user_file_data.yml
index 07f3e22..4404085 100644
--- a/core/modules/file/tests/modules/file_test_views/test_views/views.view.test_file_user_file_data.yml
+++ b/core/modules/file/tests/modules/file_test_views/test_views/views.view.test_file_user_file_data.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/image/tests/modules/image_test_views/test_views/views.view.test_image_user_image_data.yml b/core/modules/image/tests/modules/image_test_views/test_views/views.view.test_image_user_image_data.yml
index 5a504cb..3c02a8b 100644
--- a/core/modules/image/tests/modules/image_test_views/test_views/views.view.test_image_user_image_data.yml
+++ b/core/modules/image/tests/modules/image_test_views/test_views/views.view.test_image_user_image_data.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/migrate_drupal/config/install/migrate.migration.d6_field.yml b/core/modules/migrate_drupal/config/install/migrate.migration.d6_field.yml
index 72ae39b..591e3d0 100644
--- a/core/modules/migrate_drupal/config/install/migrate.migration.d6_field.yml
+++ b/core/modules/migrate_drupal/config/install/migrate.migration.d6_field.yml
@@ -6,7 +6,7 @@ source:
   plugin: d6_field
   constants:
     entity_type: node
-    langcode: und
+    langcode: en
 process:
   entity_type: 'constants/entity_type'
   status: active
diff --git a/core/modules/node/tests/modules/node_test_views/test_views/views.view.test_field_type.yml b/core/modules/node/tests/modules/node_test_views/test_views/views.view.test_field_type.yml
index d779464..f8aba1a 100644
--- a/core/modules/node/tests/modules/node_test_views/test_views/views.view.test_field_type.yml
+++ b/core/modules/node/tests/modules/node_test_views/test_views/views.view.test_field_type.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/node/tests/modules/node_test_views/test_views/views.view.test_filter_node_uid_revision.yml b/core/modules/node/tests/modules/node_test_views/test_views/views.view.test_filter_node_uid_revision.yml
index cf6975b..2bcce2f 100644
--- a/core/modules/node/tests/modules/node_test_views/test_views/views.view.test_filter_node_uid_revision.yml
+++ b/core/modules/node/tests/modules/node_test_views/test_views/views.view.test_filter_node_uid_revision.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/node/tests/modules/node_test_views/test_views/views.view.test_node_bulk_form.yml b/core/modules/node/tests/modules/node_test_views/test_views/views.view.test_node_bulk_form.yml
index f0be1f8..e26e8d3 100644
--- a/core/modules/node/tests/modules/node_test_views/test_views/views.view.test_node_bulk_form.yml
+++ b/core/modules/node/tests/modules/node_test_views/test_views/views.view.test_node_bulk_form.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/node/tests/modules/node_test_views/test_views/views.view.test_node_revision_nid.yml b/core/modules/node/tests/modules/node_test_views/test_views/views.view.test_node_revision_nid.yml
index 2a3a434..7c2e7fe 100644
--- a/core/modules/node/tests/modules/node_test_views/test_views/views.view.test_node_revision_nid.yml
+++ b/core/modules/node/tests/modules/node_test_views/test_views/views.view.test_node_revision_nid.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/node/tests/modules/node_test_views/test_views/views.view.test_node_revision_vid.yml b/core/modules/node/tests/modules/node_test_views/test_views/views.view.test_node_revision_vid.yml
index beabed7..a2783a5 100644
--- a/core/modules/node/tests/modules/node_test_views/test_views/views.view.test_node_revision_vid.yml
+++ b/core/modules/node/tests/modules/node_test_views/test_views/views.view.test_node_revision_vid.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/node/tests/modules/node_test_views/test_views/views.view.test_status_extra.yml b/core/modules/node/tests/modules/node_test_views/test_views/views.view.test_status_extra.yml
index 96f5493..b690589 100644
--- a/core/modules/node/tests/modules/node_test_views/test_views/views.view.test_status_extra.yml
+++ b/core/modules/node/tests/modules/node_test_views/test_views/views.view.test_status_extra.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/rest/tests/modules/rest_test_views/test_views/views.view.test_serializer_display_entity.yml b/core/modules/rest/tests/modules/rest_test_views/test_views/views.view.test_serializer_display_entity.yml
index 26facb7..eef38d3 100644
--- a/core/modules/rest/tests/modules/rest_test_views/test_views/views.view.test_serializer_display_entity.yml
+++ b/core/modules/rest/tests/modules/rest_test_views/test_views/views.view.test_serializer_display_entity.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/rest/tests/modules/rest_test_views/test_views/views.view.test_serializer_display_field.yml b/core/modules/rest/tests/modules/rest_test_views/test_views/views.view.test_serializer_display_field.yml
index 04b0d75..49673d5 100644
--- a/core/modules/rest/tests/modules/rest_test_views/test_views/views.view.test_serializer_display_field.yml
+++ b/core/modules/rest/tests/modules/rest_test_views/test_views/views.view.test_serializer_display_field.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/rest/tests/modules/rest_test_views/test_views/views.view.test_serializer_node_display_field.yml b/core/modules/rest/tests/modules/rest_test_views/test_views/views.view.test_serializer_node_display_field.yml
index e168711..7032875 100644
--- a/core/modules/rest/tests/modules/rest_test_views/test_views/views.view.test_serializer_node_display_field.yml
+++ b/core/modules/rest/tests/modules/rest_test_views/test_views/views.view.test_serializer_node_display_field.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   config:
diff --git a/core/modules/statistics/tests/modules/statistics_test_views/test_views/views.view.test_statistics_integration.yml b/core/modules/statistics/tests/modules/statistics_test_views/test_views/views.view.test_statistics_integration.yml
index e8099fa..0b0e227 100644
--- a/core/modules/statistics/tests/modules/statistics_test_views/test_views/views.view.test_statistics_integration.yml
+++ b/core/modules/statistics/tests/modules/statistics_test_views/test_views/views.view.test_statistics_integration.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/taxonomy/tests/modules/taxonomy_test_views/test_views/views.view.test_groupwise_term.yml b/core/modules/taxonomy/tests/modules/taxonomy_test_views/test_views/views.view.test_groupwise_term.yml
index d1a732a..c5ba611 100644
--- a/core/modules/taxonomy/tests/modules/taxonomy_test_views/test_views/views.view.test_groupwise_term.yml
+++ b/core/modules/taxonomy/tests/modules/taxonomy_test_views/test_views/views.view.test_groupwise_term.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/taxonomy/tests/modules/taxonomy_test_views/test_views/views.view.test_taxonomy_node_term_data.yml b/core/modules/taxonomy/tests/modules/taxonomy_test_views/test_views/views.view.test_taxonomy_node_term_data.yml
index 848f83e..0623f98 100644
--- a/core/modules/taxonomy/tests/modules/taxonomy_test_views/test_views/views.view.test_taxonomy_node_term_data.yml
+++ b/core/modules/taxonomy/tests/modules/taxonomy_test_views/test_views/views.view.test_taxonomy_node_term_data.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_access_perm.yml b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_access_perm.yml
index e66b30e..a5c11e8 100644
--- a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_access_perm.yml
+++ b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_access_perm.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_access_role.yml b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_access_role.yml
index 5aa6178..f089b5e 100644
--- a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_access_role.yml
+++ b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_access_role.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_groupwise_user.yml b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_groupwise_user.yml
index 9b7c030..33d89fc 100644
--- a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_groupwise_user.yml
+++ b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_groupwise_user.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_plugin_argument_default_current_user.yml b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_plugin_argument_default_current_user.yml
index 951acb8..4c8c708 100644
--- a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_plugin_argument_default_current_user.yml
+++ b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_plugin_argument_default_current_user.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_user_bulk_form.yml b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_user_bulk_form.yml
index db53601..0d96fa2 100644
--- a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_user_bulk_form.yml
+++ b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_user_bulk_form.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_user_changed.yml b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_user_changed.yml
index 9ad34a3..d929079 100644
--- a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_user_changed.yml
+++ b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_user_changed.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_user_data.yml b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_user_data.yml
index eaf72e1..30842f5 100644
--- a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_user_data.yml
+++ b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_user_data.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_user_name.yml b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_user_name.yml
index 36a073e..33706cd 100644
--- a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_user_name.yml
+++ b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_user_name.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_user_relationship.yml b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_user_relationship.yml
index f022dd0..b6b2953 100644
--- a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_user_relationship.yml
+++ b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_user_relationship.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_user_uid_argument.yml b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_user_uid_argument.yml
index 5551280..fefcc42 100644
--- a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_user_uid_argument.yml
+++ b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_user_uid_argument.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_view_argument_validate_user.yml b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_view_argument_validate_user.yml
index ed2922c..fe9b4f5 100644
--- a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_view_argument_validate_user.yml
+++ b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_view_argument_validate_user.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_view_argument_validate_user
diff --git a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_view_argument_validate_username.yml b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_view_argument_validate_username.yml
index a8f3718..b3b962f 100644
--- a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_view_argument_validate_username.yml
+++ b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_view_argument_validate_username.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_view_argument_validate_username
diff --git a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_views_handler_field_role.yml b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_views_handler_field_role.yml
index fa31be5..4d020e7 100644
--- a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_views_handler_field_role.yml
+++ b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_views_handler_field_role.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_views_handler_field_user_name.yml b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_views_handler_field_user_name.yml
index 4fd758c..8136550 100644
--- a/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_views_handler_field_user_name.yml
+++ b/core/modules/user/tests/modules/user_test_views/test_views/views.view.test_views_handler_field_user_name.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.entity_test_fields.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.entity_test_fields.yml
index 8966bb8..0f589a1 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.entity_test_fields.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.entity_test_fields.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: entity_test_fields
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.entity_test_row.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.entity_test_row.yml
index 2384fe0..4bd0503 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.entity_test_row.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.entity_test_row.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: entity_test_row
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_access_none.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_access_none.yml
index 292175c..6b267be 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_access_none.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_access_none.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_access_none
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_aggregate_count.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_aggregate_count.yml
index 1f922bf..1116bcb 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_aggregate_count.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_aggregate_count.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_aggregate_count
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_ajax_view.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_ajax_view.yml
index 5701f34..d2d4d43 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_ajax_view.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_ajax_view.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_ajax_view
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_alias.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_alias.yml
index 9984358..174ed8d 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_alias.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_alias.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_area_title.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_area_title.yml
index 215e042..a963e97 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_area_title.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_area_title.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_area_title
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_area_view.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_area_view.yml
index 081e4b0..407228b 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_area_view.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_area_view.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_area_view
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_argument_date.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_argument_date.yml
index 707454b..1e4db70 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_argument_date.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_argument_date.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_argument_date
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_argument_default_current_user.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_argument_default_current_user.yml
index cd29ed3..cd481fa 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_argument_default_current_user.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_argument_default_current_user.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_argument_default_fixed.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_argument_default_fixed.yml
index eb32000..4b4f296 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_argument_default_fixed.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_argument_default_fixed.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_attached_disabled.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_attached_disabled.yml
index ecc3ef0..d07216f 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_attached_disabled.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_attached_disabled.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   config:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_attachment_ui.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_attachment_ui.yml
index d366739..89089c2 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_attachment_ui.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_attachment_ui.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_cache.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_cache.yml
index 6dd5fc5..2ff29fd 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_cache.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_cache.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_cache
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_click_sort.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_click_sort.yml
index 680e51e..82d10ad 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_click_sort.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_click_sort.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_click_sort
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_destroy.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_destroy.yml
index 7d0af80..47bd959 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_destroy.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_destroy.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_disabled_display.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_disabled_display.yml
index f2c18aa..c0c45c3 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_disabled_display.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_disabled_display.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   config:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_display.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_display.yml
index 082e787..7b8490a 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_display.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_display.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: false
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_display_attachment.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_display_attachment.yml
index 7822bc3..715158c 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_display_attachment.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_display_attachment.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_display_attachment
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_display_feed.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_display_feed.yml
index 0bba63c..67537ec 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_display_feed.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_display_feed.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_display_invalid.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_display_invalid.yml
index 88bcf38..f7b1499 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_display_invalid.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_display_invalid.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_display_more.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_display_more.yml
index 674daca..aaf08bb 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_display_more.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_display_more.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_display_more
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_dropbutton.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_dropbutton.yml
index 0d4a076..3e5fcea 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_dropbutton.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_dropbutton.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_entity_area.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_entity_area.yml
index 74e7c59..de5b615 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_entity_area.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_entity_area.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   content:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_entity_operations.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_entity_operations.yml
index d8436d3..ee58e8b 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_entity_operations.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_entity_operations.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_entity_row.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_entity_row.yml
index 0c1a69b..ad9f748 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_entity_row.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_entity_row.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_entity_row
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_entity_row_renderers.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_entity_row_renderers.yml
index d9e80d7..4a8fef6 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_entity_row_renderers.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_entity_row_renderers.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   config:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_entity_type_filter.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_entity_type_filter.yml
index fd1764c..6cfb96a 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_entity_type_filter.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_entity_type_filter.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_example_area.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_example_area.yml
index 7f3acd9..b90c153 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_example_area.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_example_area.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_example_area
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_example_area_access.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_example_area_access.yml
index 5aab81c..2ec7214 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_example_area_access.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_example_area_access.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_example_area_access
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_exposed_admin_ui.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_exposed_admin_ui.yml
index a8d0c7a..32b0692 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_exposed_admin_ui.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_exposed_admin_ui.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_exposed_block.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_exposed_block.yml
index 1cc9f44..3818532 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_exposed_block.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_exposed_block.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_exposed_form_buttons.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_exposed_form_buttons.yml
index f0e110f..bed02ca 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_exposed_form_buttons.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_exposed_form_buttons.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_field_classes.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_field_classes.yml
index d834164..2480aa3 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_field_classes.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_field_classes.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_field_classes
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_field_field_test.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_field_field_test.yml
index c0005ca..aa37836 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_field_field_test.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_field_field_test.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_field_field_test
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_field_get_entity.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_field_get_entity.yml
index 99f38cf..7e20ee7 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_field_get_entity.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_field_get_entity.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_field_output.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_field_output.yml
index 6eabc02..c3d2bc1 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_field_output.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_field_output.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_field_output
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_field_tokens.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_field_tokens.yml
index b08aa62..718b27c 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_field_tokens.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_field_tokens.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_field_tokens
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_filter.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_filter.yml
index 61da33a..86313c1 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_filter.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_filter.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_filter_date_between.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_filter_date_between.yml
index f5f1c1e..16afa71 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_filter_date_between.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_filter_date_between.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_filter_group_override.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_filter_group_override.yml
index 0c1fba7..85c4de2 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_filter_group_override.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_filter_group_override.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_filter_groups.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_filter_groups.yml
index 53d216c..4d57f77 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_filter_groups.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_filter_groups.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_filter_in_operator_ui.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_filter_in_operator_ui.yml
index cf0d1b0..66520dc 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_filter_in_operator_ui.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_filter_in_operator_ui.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_filter_in_operator_ui
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_get_attach_displays.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_get_attach_displays.yml
index 765af4a..6116e77 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_get_attach_displays.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_get_attach_displays.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_glossary.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_glossary.yml
index 72a99e2..1e8af98 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_glossary.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_glossary.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_grid.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_grid.yml
index d48597f..0d02bc0 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_grid.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_grid.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_grid
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_group_by_count.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_group_by_count.yml
index ff5a1d8..4d4dd56 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_group_by_count.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_group_by_count.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_group_by_count
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_group_by_in_filters.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_group_by_in_filters.yml
index 4aa2248..173a0e8 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_group_by_in_filters.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_group_by_in_filters.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_group_by_in_filters
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_group_rows.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_group_rows.yml
index 897f20d..5244677 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_group_rows.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_group_rows.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_groupwise_term_ui.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_groupwise_term_ui.yml
index 55747a7..4dcb99b 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_groupwise_term_ui.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_groupwise_term_ui.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_handler_relationships.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_handler_relationships.yml
index 21917b8..1c4c7ac 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_handler_relationships.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_handler_relationships.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_handler_test_access.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_handler_test_access.yml
index 9afaf2a..edd69b0 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_handler_test_access.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_handler_test_access.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_handler_test_access
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_history.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_history.yml
index 46e536c..92962d7 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_history.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_history.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_http_status_code.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_http_status_code.yml
index 053ab75..83192b8 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_http_status_code.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_http_status_code.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_mini_pager.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_mini_pager.yml
index fcf2f1c..843b492 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_mini_pager.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_mini_pager.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_page_display.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_page_display.yml
index af65cc4..11c7b37 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_page_display.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_page_display.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_page_display
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_page_display_arguments.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_page_display_arguments.yml
index 081b746..62c008d 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_page_display_arguments.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_page_display_arguments.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_page_display_arguments
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_page_display_menu.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_page_display_menu.yml
index b672203..814ad4e 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_page_display_menu.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_page_display_menu.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_page_display_menu
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_page_display_route.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_page_display_route.yml
index bd034bb..fd1ca94 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_page_display_route.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_page_display_route.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_page_view.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_page_view.yml
index 0d2be99..6b8ad9f 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_page_view.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_page_view.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_page_view
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_pager_full.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_pager_full.yml
index c84842a..01fe100 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_pager_full.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_pager_full.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_pager_none.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_pager_none.yml
index 6a4a388..7b11e9e 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_pager_none.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_pager_none.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_pager_some.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_pager_some.yml
index c95172e..156e7dd 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_pager_some.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_pager_some.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_plugin_dependencies.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_plugin_dependencies.yml
index b969ad5..86f4189 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_plugin_dependencies.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_plugin_dependencies.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_preview.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_preview.yml
index a1629b4..9461d01 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_preview.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_preview.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_redirect_view.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_redirect_view.yml
index 500dba1..b3c5c70 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_redirect_view.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_redirect_view.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_relationship_dependency.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_relationship_dependency.yml
index 97e217e..dbbbf16 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_relationship_dependency.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_relationship_dependency.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_simple_argument.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_simple_argument.yml
index 2689298..8badd47 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_simple_argument.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_simple_argument.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_simple_argument
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_store_pager_settings.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_store_pager_settings.yml
index 7dda22d..bae5768 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_store_pager_settings.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_store_pager_settings.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_style_mapping.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_style_mapping.yml
index 12aac8d..5b528a7 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_style_mapping.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_style_mapping.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_style_opml.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_style_opml.yml
index b1df98a..e601365 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_style_opml.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_style_opml.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_table.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_table.yml
index 7460f10..698e072 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_table.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_table.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_table
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_tag_cache.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_tag_cache.yml
index 173547f..dc893ef 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_tag_cache.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_tag_cache.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_tokens.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_tokens.yml
index 44e4c48..bf9341b 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_tokens.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_tokens.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_tokens
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view.yml
index 2861c7a..f54e92b 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_view
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_argument_validate_numeric.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_argument_validate_numeric.yml
index 6465003..865bca9 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_argument_validate_numeric.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_argument_validate_numeric.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_view_argument_validate_numeric
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_broken.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_broken.yml
index a7fe7c9..0b6de02 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_broken.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_broken.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_view_broken
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_delete.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_delete.yml
index 2f8c5ad..4ee2b75 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_delete.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_delete.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_view_delete
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_embed.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_embed.yml
index 9b0b319..48e2c7b 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_embed.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_embed.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_view_embed
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_empty.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_empty.yml
index 51ddaa1..951bfd2 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_empty.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_empty.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_view_empty
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_entity_test.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_entity_test.yml
index b9dcdfc..ab61fbc 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_entity_test.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_entity_test.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_view_entity_test
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_entity_test_additional_base_field.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_entity_test_additional_base_field.yml
index 8c04154..c3921a1 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_entity_test_additional_base_field.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_entity_test_additional_base_field.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_view_entity_test_additional_base_field
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_entity_test_data.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_entity_test_data.yml
index 998bafe..6ccd8be 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_entity_test_data.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_entity_test_data.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_view_entity_test_data
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_entity_test_revision.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_entity_test_revision.yml
index 23de136..ec4649f 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_entity_test_revision.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_entity_test_revision.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_view_entity_test_revision
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_handler_weight.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_handler_weight.yml
index f656bdd..753510a 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_handler_weight.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_handler_weight.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_view_handler_weight
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_pager_full_zero_items_per_page.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_pager_full_zero_items_per_page.yml
index 154d615..a5be547 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_pager_full_zero_items_per_page.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_pager_full_zero_items_per_page.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_render.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_render.yml
index 3e1aa09..89080d6 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_render.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_render.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_view_render
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_status.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_status.yml
index 312c2c4..83300e6 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_status.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_status.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: false
 dependencies: {  }
 id: test_view_status
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_storage.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_storage.yml
index 8d39cd3..e59b69f 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_storage.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_view_storage.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: false
 dependencies: {  }
 id: test_view_storage
diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_views_groupby_save.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_views_groupby_save.yml
index 10c979a..11533bd 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_views_groupby_save.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_views_groupby_save.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies: {  }
 id: test_views_groupby_save
diff --git a/core/modules/views/tests/modules/views_test_data/test_views/views.view.test_access_static.yml b/core/modules/views/tests/modules/views_test_data/test_views/views.view.test_access_static.yml
index dc69203..b79f068 100644
--- a/core/modules/views/tests/modules/views_test_data/test_views/views.view.test_access_static.yml
+++ b/core/modules/views/tests/modules/views_test_data/test_views/views.view.test_access_static.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   module:
diff --git a/core/profiles/standard/config/install/rdf.mapping.comment.comment.yml b/core/profiles/standard/config/install/rdf.mapping.comment.comment.yml
index 7eedd97..f0d587a 100644
--- a/core/profiles/standard/config/install/rdf.mapping.comment.comment.yml
+++ b/core/profiles/standard/config/install/rdf.mapping.comment.comment.yml
@@ -1,4 +1,4 @@
-langcode: und
+langcode: en
 status: true
 dependencies:
   config:
