--- /dev/null
+<?php
+
+namespace Drupal\Tests\language\Functional\Update;
+
+use Drupal\Core\Entity\Entity\EntityFormDisplay;
+use Drupal\FunctionalTests\Update\UpdatePathTestBase;
+
+/**
+ * Tests the update path for the language_select widget.
+ *
+ * @group Update
+ */
+class LanguageSelectWidgetUpdateTest extends UpdatePathTestBase {
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function setDatabaseDumpFiles() {
+ $this->databaseDumpFiles = [
+ __DIR__ . '/../../../../../system/tests/fixtures/update/drupal-8.filled.standard.php.gz',
+ ];
+ }
+
+ /**
+ * Tests language_post_update_language_select_widget().
+ */
+ public function testLanguagePostUpdateLanguageSelectWidget() {
+ // Tests before the update.
+ $content_before = EntityFormDisplay::load('node.page.default')->get('content');
+ $this->assertEqual([], $content_before['langcode']['settings']);
+
+ // Run the update.
+ $this->runUpdates();
+
+ // Tests after the update.
+ $content_after = EntityFormDisplay::load('node.page.default')->get('content');
+ $this->assertEqual(['include_locked' => TRUE], $content_after['langcode']['settings']);
+ }
+
+}