--- /dev/null
+<?php
+
+namespace Drupal\Tests\comment\Functional;
+
+use Drupal\comment\Entity\Comment;
+use Drupal\comment\Plugin\Field\FieldType\CommentItemInterface;
+use Drupal\comment\Tests\CommentTestTrait;
+use Drupal\field\Entity\FieldStorageConfig;
+use Drupal\Tests\BrowserTestBase;
+
+/**
+ * Tests for comment language.
+ *
+ * @group comment
+ */
+class CommentLanguageTest extends BrowserTestBase {
+
+ use CommentTestTrait;
+
+ /**
+ * Modules to install.
+ *
+ * We also use the language_test module here to be able to turn on content
+ * language negotiation. Drupal core does not provide a way in itself to do
+ * that.
+ *
+ * @var array
+ */
+ public static $modules = ['node', 'language', 'language_test', 'comment_test'];
+
+ protected function setUp() {
+ parent::setUp();
+
+ $this->drupalCreateContentType(['type' => 'article', 'name' => 'Article']);
+
+ // Create and log in user.
+ $admin_user = $this->drupalCreateUser(['administer site configuration', 'administer languages', 'access administration pages', 'administer content types', 'administer comments', 'create article content', 'access comments', 'post comments', 'skip comment approval']);
+ $this->drupalLogin($admin_user);
+
+ // Add language.
+ $edit = ['predefined_langcode' => 'fr'];
+ $this->drupalPostForm('admin/config/regional/language/add', $edit, t('Add language'));
+
+ // Set "Article" content type to use multilingual support.
+ $edit = ['language_configuration[language_alterable]' => TRUE];
+ $this->drupalPostForm('admin/structure/types/manage/article', $edit, t('Save content type'));
+
+ // Enable content language negotiation UI.
+ \Drupal::state()->set('language_test.content_language_type', TRUE);
+
+ // Set interface language detection to user and content language detection
+ // to URL. Disable inheritance from interface language to ensure content
+ // language will fall back to the default language if no URL language can be
+ // detected.
+ $edit = [
+ 'language_interface[enabled][language-user]' => TRUE,
+ 'language_content[enabled][language-url]' => TRUE,
+ 'language_content[enabled][language-interface]' => FALSE,
+ ];
+ $this->drupalPostForm('admin/config/regional/language/detection', $edit, t('Save settings'));
+
+ // Change user language preference, this way interface language is always
+ // French no matter what path prefix the URLs have.
+ $edit = ['preferred_langcode' => 'fr'];
+ $this->drupalPostForm("user/" . $admin_user->id() . "/edit", $edit, t('Save'));
+
+ // Create comment field on article.
+ $this->addDefaultCommentField('node', 'article');
+
+ // Make comment body translatable.
+ $field_storage = FieldStorageConfig::loadByName('comment', 'comment_body');
+ $field_storage->setTranslatable(TRUE);
+ $field_storage->save();
+ $this->assertTrue($field_storage->isTranslatable(), 'Comment body is translatable.');
+ }
+
+ /**
+ * Test that comment language is properly set.
+ */
+ public function testCommentLanguage() {
+
+ // Create two nodes, one for english and one for french, and comment each
+ // node using both english and french as content language by changing URL
+ // language prefixes. Meanwhile interface language is always French, which
+ // is the user language preference. This way we can ensure that node
+ // language and interface language do not influence comment language, as
+ // only content language has to.
+ foreach ($this->container->get('language_manager')->getLanguages() as $node_langcode => $node_language) {
+ // Create "Article" content.
+ $title = $this->randomMachineName();
+ $edit = [
+ 'title[0][value]' => $title,
+ 'body[0][value]' => $this->randomMachineName(),
+ 'langcode[0][value]' => $node_langcode,
+ 'comment[0][status]' => CommentItemInterface::OPEN,
+ ];
+ $this->drupalPostForm("node/add/article", $edit, t('Save'));
+ $node = $this->drupalGetNodeByTitle($title);
+
+ $prefixes = language_negotiation_url_prefixes();
+ foreach ($this->container->get('language_manager')->getLanguages() as $langcode => $language) {
+ // Post a comment with content language $langcode.
+ $prefix = empty($prefixes[$langcode]) ? '' : $prefixes[$langcode] . '/';
+ $comment_values[$node_langcode][$langcode] = $this->randomMachineName();
+ $edit = [
+ 'subject[0][value]' => $this->randomMachineName(),
+ 'comment_body[0][value]' => $comment_values[$node_langcode][$langcode],
+ ];
+ $this->drupalPostForm($prefix . 'node/' . $node->id(), $edit, t('Preview'));
+ $this->drupalPostForm(NULL, $edit, t('Save'));
+
+ // Check that comment language matches the current content language.
+ $cids = \Drupal::entityQuery('comment')
+ ->condition('entity_id', $node->id())
+ ->condition('entity_type', 'node')
+ ->condition('field_name', 'comment')
+ ->sort('cid', 'DESC')
+ ->range(0, 1)
+ ->execute();
+ $comment = Comment::load(reset($cids));
+ $args = ['%node_language' => $node_langcode, '%comment_language' => $comment->langcode->value, '%langcode' => $langcode];
+ $this->assertEqual($comment->langcode->value, $langcode, format_string('The comment posted with content language %langcode and belonging to the node with language %node_language has language %comment_language', $args));
+ $this->assertEqual($comment->comment_body->value, $comment_values[$node_langcode][$langcode], 'Comment body correctly stored.');
+ }
+ }
+
+ // Check that comment bodies appear in the administration UI.
+ $this->drupalGet('admin/content/comment');
+ foreach ($comment_values as $node_values) {
+ foreach ($node_values as $value) {
+ $this->assertRaw($value);
+ }
+ }
+ }
+
+}