--- /dev/null
+<?php
+
+namespace Drupal\comment\Tests\Views;
+
+use Drupal\comment\CommentInterface;
+use Drupal\comment\Entity\Comment;
+use Drupal\comment\Tests\CommentTestTrait;
+use Drupal\views\Views;
+use Drupal\views\Tests\ViewTestBase;
+
+/**
+ * Tests results for the Recent Comments view shipped with the module.
+ *
+ * @group comment
+ */
+class DefaultViewRecentCommentsTest extends ViewTestBase {
+
+ use CommentTestTrait;
+
+ /**
+ * Modules to install.
+ *
+ * @var array
+ */
+ public static $modules = ['node', 'comment', 'block'];
+
+ /**
+ * Number of results for the Master display.
+ *
+ * @var int
+ */
+ protected $masterDisplayResults = 5;
+
+ /**
+ * Number of results for the Block display.
+ *
+ * @var int
+ */
+ protected $blockDisplayResults = 5;
+
+ /**
+ * Number of results for the Page display.
+ *
+ * @var int
+ */
+ protected $pageDisplayResults = 5;
+
+ /**
+ * Will hold the comments created for testing.
+ *
+ * @var array
+ */
+ protected $commentsCreated = [];
+
+ /**
+ * Contains the node object used for comments of this test.
+ *
+ * @var \Drupal\node\Node
+ */
+ public $node;
+
+ protected function setUp() {
+ parent::setUp();
+
+ // Create a new content type
+ $content_type = $this->drupalCreateContentType();
+
+ // Add a node of the new content type.
+ $node_data = [
+ 'type' => $content_type->id(),
+ ];
+
+ $this->addDefaultCommentField('node', $content_type->id());
+ $this->node = $this->drupalCreateNode($node_data);
+
+ // Force a flush of the in-memory storage.
+ $this->container->get('views.views_data')->clear();
+
+ // Create some comments and attach them to the created node.
+ for ($i = 0; $i < $this->masterDisplayResults; $i++) {
+ /** @var \Drupal\comment\CommentInterface $comment */
+ $comment = Comment::create([
+ 'status' => CommentInterface::PUBLISHED,
+ 'field_name' => 'comment',
+ 'entity_type' => 'node',
+ 'entity_id' => $this->node->id(),
+ ]);
+ $comment->setOwnerId(0);
+ $comment->setSubject('Test comment ' . $i);
+ $comment->comment_body->value = 'Test body ' . $i;
+ $comment->comment_body->format = 'full_html';
+
+ // Ensure comments are sorted in ascending order.
+ $time = REQUEST_TIME + ($this->masterDisplayResults - $i);
+ $comment->setCreatedTime($time);
+ $comment->changed->value = $time;
+
+ $comment->save();
+ }
+
+ // Store all the nodes just created to access their properties on the tests.
+ $this->commentsCreated = Comment::loadMultiple();
+
+ // Sort created comments in descending order.
+ ksort($this->commentsCreated, SORT_NUMERIC);
+ }
+
+ /**
+ * Tests the block defined by the comments_recent view.
+ */
+ public function testBlockDisplay() {
+ $user = $this->drupalCreateUser(['access comments']);
+ $this->drupalLogin($user);
+
+ $view = Views::getView('comments_recent');
+ $view->setDisplay('block_1');
+ $this->executeView($view);
+
+ $map = [
+ 'subject' => 'subject',
+ 'cid' => 'cid',
+ 'comment_field_data_created' => 'created'
+ ];
+ $expected_result = [];
+ foreach (array_values($this->commentsCreated) as $key => $comment) {
+ $expected_result[$key]['subject'] = $comment->getSubject();
+ $expected_result[$key]['cid'] = $comment->id();
+ $expected_result[$key]['created'] = $comment->getCreatedTime();
+ }
+ $this->assertIdenticalResultset($view, $expected_result, $map);
+
+ // Check the number of results given by the display is the expected.
+ $this->assertEqual(sizeof($view->result), $this->blockDisplayResults,
+ format_string('There are exactly @results comments. Expected @expected',
+ ['@results' => count($view->result), '@expected' => $this->blockDisplayResults]
+ )
+ );
+ }
+
+}