--- /dev/null
+<?php
+
+namespace Drupal\Tests\node\Functional;
+
+use Drupal\field\Entity\FieldStorageConfig;
+use Drupal\language\Entity\ConfigurableLanguage;
+use Drupal\language\Plugin\LanguageNegotiation\LanguageNegotiationUrl;
+use Drupal\Core\Language\LanguageInterface;
+use Drupal\Tests\BrowserTestBase;
+
+/**
+ * Tests multilingual support for fields.
+ *
+ * @group node
+ */
+class NodeFieldMultilingualTest extends BrowserTestBase {
+
+ /**
+ * Modules to enable.
+ *
+ * @var array
+ */
+ public static $modules = ['node', 'language'];
+
+ protected function setUp() {
+ parent::setUp();
+
+ // Create Basic page node type.
+ $this->drupalCreateContentType(['type' => 'page', 'name' => 'Basic page']);
+
+ // Setup users.
+ $admin_user = $this->drupalCreateUser(['administer languages', 'administer content types', 'access administration pages', 'create page content', 'edit own page content']);
+ $this->drupalLogin($admin_user);
+
+ // Add a new language.
+ ConfigurableLanguage::createFromLangcode('it')->save();
+
+ // Enable URL language detection and selection.
+ $edit = ['language_interface[enabled][language-url]' => '1'];
+ $this->drupalPostForm('admin/config/regional/language/detection', $edit, t('Save settings'));
+
+ // Set "Basic page" content type to use multilingual support.
+ $edit = [
+ 'language_configuration[language_alterable]' => TRUE,
+ ];
+ $this->drupalPostForm('admin/structure/types/manage/page', $edit, t('Save content type'));
+ $this->assertRaw(t('The content type %type has been updated.', ['%type' => 'Basic page']), 'Basic page content type has been updated.');
+
+ // Make node body translatable.
+ $field_storage = FieldStorageConfig::loadByName('node', 'body');
+ $field_storage->setTranslatable(TRUE);
+ $field_storage->save();
+ }
+
+ /**
+ * Tests whether field languages are correctly set through the node form.
+ */
+ public function testMultilingualNodeForm() {
+ // Create "Basic page" content.
+ $langcode = language_get_default_langcode('node', 'page');
+ $title_key = 'title[0][value]';
+ $title_value = $this->randomMachineName(8);
+ $body_key = 'body[0][value]';
+ $body_value = $this->randomMachineName(16);
+
+ // Create node to edit.
+ $edit = [];
+ $edit[$title_key] = $title_value;
+ $edit[$body_key] = $body_value;
+ $this->drupalPostForm('node/add/page', $edit, t('Save'));
+
+ // Check that the node exists in the database.
+ $node = $this->drupalGetNodeByTitle($edit[$title_key]);
+ $this->assertTrue($node, 'Node found in database.');
+ $this->assertTrue($node->language()->getId() == $langcode && $node->body->value == $body_value, 'Field language correctly set.');
+
+ // Change node language.
+ $langcode = 'it';
+ $this->drupalGet("node/{$node->id()}/edit");
+ $edit = [
+ $title_key => $this->randomMachineName(8),
+ 'langcode[0][value]' => $langcode,
+ ];
+ $this->drupalPostForm(NULL, $edit, t('Save'));
+ $node = $this->drupalGetNodeByTitle($edit[$title_key], TRUE);
+ $this->assertTrue($node, 'Node found in database.');
+ $this->assertTrue($node->language()->getId() == $langcode && $node->body->value == $body_value, 'Field language correctly changed.');
+
+ // Enable content language URL detection.
+ $this->container->get('language_negotiator')->saveConfiguration(LanguageInterface::TYPE_CONTENT, [LanguageNegotiationUrl::METHOD_ID => 0]);
+
+ // Test multilingual field language fallback logic.
+ $this->drupalGet("it/node/{$node->id()}");
+ $this->assertRaw($body_value, 'Body correctly displayed using Italian as requested language');
+
+ $this->drupalGet("node/{$node->id()}");
+ $this->assertRaw($body_value, 'Body correctly displayed using English as requested language');
+ }
+
+ /**
+ * Tests multilingual field display settings.
+ */
+ public function testMultilingualDisplaySettings() {
+ // Create "Basic page" content.
+ $title_key = 'title[0][value]';
+ $title_value = $this->randomMachineName(8);
+ $body_key = 'body[0][value]';
+ $body_value = $this->randomMachineName(16);
+
+ // Create node to edit.
+ $edit = [];
+ $edit[$title_key] = $title_value;
+ $edit[$body_key] = $body_value;
+ $this->drupalPostForm('node/add/page', $edit, t('Save'));
+
+ // Check that the node exists in the database.
+ $node = $this->drupalGetNodeByTitle($edit[$title_key]);
+ $this->assertTrue($node, 'Node found in database.');
+
+ // Check if node body is showed.
+ $this->drupalGet('node/' . $node->id());
+ $body = $this->xpath('//article[contains(concat(" ", normalize-space(@class), " "), :node-class)]//div[contains(concat(" ", normalize-space(@class), " "), :content-class)]/descendant::p', [
+ ':node-class' => ' node ',
+ ':content-class' => 'node__content',
+ ]);
+ $this->assertEqual($body[0]->getText(), $node->body->value, 'Node body found.');
+ }
+
+}