Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\Tests\tracker\Functional;
Chris@0: 
Chris@0: use Drupal\comment\CommentInterface;
Chris@0: use Drupal\comment\Tests\CommentTestTrait;
Chris@0: use Drupal\Core\Cache\Cache;
Chris@18: use Drupal\Core\Database\Database;
Chris@0: use Drupal\Core\EventSubscriber\MainContentViewSubscriber;
Chris@0: use Drupal\Core\Session\AccountInterface;
Chris@0: use Drupal\field\Entity\FieldStorageConfig;
Chris@0: use Drupal\node\Entity\Node;
Chris@0: use Drupal\Tests\BrowserTestBase;
Chris@0: use Drupal\Tests\system\Functional\Cache\AssertPageCacheContextsAndTagsTrait;
Chris@0: 
Chris@0: /**
Chris@0:  * Create and delete nodes and check for their display in the tracker listings.
Chris@0:  *
Chris@0:  * @group tracker
Chris@0:  */
Chris@0: class TrackerTest extends BrowserTestBase {
Chris@0: 
Chris@0:   use CommentTestTrait;
Chris@0:   use AssertPageCacheContextsAndTagsTrait;
Chris@0: 
Chris@0:   /**
Chris@0:    * Modules to enable.
Chris@0:    *
Chris@0:    * @var array
Chris@0:    */
Chris@0:   public static $modules = ['block', 'comment', 'tracker', 'history', 'node_test'];
Chris@0: 
Chris@0:   /**
Chris@0:    * The main user for testing.
Chris@0:    *
Chris@0:    * @var \Drupal\user\UserInterface
Chris@0:    */
Chris@0:   protected $user;
Chris@0: 
Chris@0:   /**
Chris@0:    * A second user that will 'create' comments and nodes.
Chris@0:    *
Chris@0:    * @var \Drupal\user\UserInterface
Chris@0:    */
Chris@0:   protected $otherUser;
Chris@0: 
Chris@0:   protected function setUp() {
Chris@0:     parent::setUp();
Chris@0: 
Chris@0:     $this->drupalCreateContentType(['type' => 'page', 'name' => 'Basic page']);
Chris@0: 
Chris@0:     $permissions = ['access comments', 'create page content', 'post comments', 'skip comment approval'];
Chris@0:     $this->user = $this->drupalCreateUser($permissions);
Chris@0:     $this->otherUser = $this->drupalCreateUser($permissions);
Chris@0:     $this->addDefaultCommentField('node', 'page');
Chris@0:     user_role_grant_permissions(AccountInterface::ANONYMOUS_ROLE, [
Chris@0:       'access content',
Chris@0:       'access user profiles',
Chris@0:     ]);
Chris@0:     $this->drupalPlaceBlock('local_tasks_block', ['id' => 'page_tabs_block']);
Chris@0:     $this->drupalPlaceBlock('local_actions_block', ['id' => 'page_actions_block']);
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Tests for the presence of nodes on the global tracker listing.
Chris@0:    */
Chris@0:   public function testTrackerAll() {
Chris@0:     $this->drupalLogin($this->user);
Chris@0: 
Chris@0:     $unpublished = $this->drupalCreateNode([
Chris@0:       'title' => $this->randomMachineName(8),
Chris@0:       'status' => 0,
Chris@0:     ]);
Chris@0:     $published = $this->drupalCreateNode([
Chris@0:       'title' => $this->randomMachineName(8),
Chris@0:       'status' => 1,
Chris@0:     ]);
Chris@0: 
Chris@0:     $this->drupalGet('activity');
Chris@0:     $this->assertNoText($unpublished->label(), 'Unpublished node does not show up in the tracker listing.');
Chris@0:     $this->assertText($published->label(), 'Published node shows up in the tracker listing.');
Chris@0:     $this->assertLink(t('My recent content'), 0, 'User tab shows up on the global tracker page.');
Chris@0: 
Chris@0:     // Assert cache contexts, specifically the pager and node access contexts.
Chris@0:     $this->assertCacheContexts(['languages:language_interface', 'route', 'theme', 'url.query_args:' . MainContentViewSubscriber::WRAPPER_FORMAT, 'url.query_args.pagers:0', 'user.node_grants:view', 'user']);
Chris@0:     // Assert cache tags for the action/tabs blocks, visible node, and node list
Chris@0:     // cache tag.
Chris@0:     $expected_tags = Cache::mergeTags($published->getCacheTags(), $published->getOwner()->getCacheTags());
Chris@0:     // Because the 'user.permissions' cache context is being optimized away.
Chris@0:     $role_tags = [];
Chris@0:     foreach ($this->user->getRoles() as $rid) {
Chris@0:       $role_tags[] = "config:user.role.$rid";
Chris@0:     }
Chris@0:     $expected_tags = Cache::mergeTags($expected_tags, $role_tags);
Chris@0:     $block_tags = [
Chris@0:       'block_view',
Chris@17:       'local_task',
Chris@0:       'config:block.block.page_actions_block',
Chris@0:       'config:block.block.page_tabs_block',
Chris@0:       'config:block_list',
Chris@0:     ];
Chris@0:     $expected_tags = Cache::mergeTags($expected_tags, $block_tags);
Chris@0:     $additional_tags = [
Chris@0:       'node_list',
Chris@0:       'rendered',
Chris@0:     ];
Chris@0:     $expected_tags = Cache::mergeTags($expected_tags, $additional_tags);
Chris@0:     $this->assertCacheTags($expected_tags);
Chris@0: 
Chris@0:     // Delete a node and ensure it no longer appears on the tracker.
Chris@0:     $published->delete();
Chris@0:     $this->drupalGet('activity');
Chris@0:     $this->assertNoText($published->label(), 'Deleted node does not show up in the tracker listing.');
Chris@0: 
Chris@0:     // Test proper display of time on activity page when comments are disabled.
Chris@0:     // Disable comments.
Chris@0:     FieldStorageConfig::loadByName('node', 'comment')->delete();
Chris@0:     $node = $this->drupalCreateNode([
Chris@0:       // This title is required to trigger the custom changed time set in the
Chris@0:       // node_test module. This is needed in order to ensure a sufficiently
Chris@0:       // large 'time ago' interval that isn't numbered in seconds.
Chris@0:       'title' => 'testing_node_presave',
Chris@0:       'status' => 1,
Chris@0:     ]);
Chris@0: 
Chris@0:     $this->drupalGet('activity');
Chris@0:     $this->assertText($node->label(), 'Published node shows up in the tracker listing.');
Chris@0:     $this->assertText(\Drupal::service('date.formatter')->formatTimeDiffSince($node->getChangedTime()), 'The changed time was displayed on the tracker listing.');
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Tests for the presence of nodes on a user's tracker listing.
Chris@0:    */
Chris@0:   public function testTrackerUser() {
Chris@0:     $this->drupalLogin($this->user);
Chris@0: 
Chris@0:     $unpublished = $this->drupalCreateNode([
Chris@0:       'title' => $this->randomMachineName(8),
Chris@0:       'uid' => $this->user->id(),
Chris@0:       'status' => 0,
Chris@0:     ]);
Chris@0:     $my_published = $this->drupalCreateNode([
Chris@0:       'title' => $this->randomMachineName(8),
Chris@0:       'uid' => $this->user->id(),
Chris@0:       'status' => 1,
Chris@0:     ]);
Chris@0:     $other_published_no_comment = $this->drupalCreateNode([
Chris@0:       'title' => $this->randomMachineName(8),
Chris@0:       'uid' => $this->otherUser->id(),
Chris@0:       'status' => 1,
Chris@0:     ]);
Chris@0:     $other_published_my_comment = $this->drupalCreateNode([
Chris@0:       'title' => $this->randomMachineName(8),
Chris@0:       'uid' => $this->otherUser->id(),
Chris@0:       'status' => 1,
Chris@0:     ]);
Chris@0:     $comment = [
Chris@0:       'subject[0][value]' => $this->randomMachineName(),
Chris@0:       'comment_body[0][value]' => $this->randomMachineName(20),
Chris@0:     ];
Chris@0:     $this->drupalPostForm('comment/reply/node/' . $other_published_my_comment->id() . '/comment', $comment, t('Save'));
Chris@0: 
Chris@0:     $this->drupalGet('user/' . $this->user->id() . '/activity');
Chris@0:     $this->assertNoText($unpublished->label(), "Unpublished nodes do not show up in the user's tracker listing.");
Chris@0:     $this->assertText($my_published->label(), "Published nodes show up in the user's tracker listing.");
Chris@0:     $this->assertNoText($other_published_no_comment->label(), "Another user's nodes do not show up in the user's tracker listing.");
Chris@0:     $this->assertText($other_published_my_comment->label(), "Nodes that the user has commented on appear in the user's tracker listing.");
Chris@0: 
Chris@0:     // Assert cache contexts.
Chris@0:     $this->assertCacheContexts(['languages:language_interface', 'route', 'theme', 'url.query_args:' . MainContentViewSubscriber::WRAPPER_FORMAT, 'url.query_args.pagers:0', 'user', 'user.node_grants:view']);
Chris@0:     // Assert cache tags for the visible nodes (including owners) and node list
Chris@0:     // cache tag.
Chris@0:     $expected_tags = Cache::mergeTags($my_published->getCacheTags(), $my_published->getOwner()->getCacheTags());
Chris@0:     $expected_tags = Cache::mergeTags($expected_tags, $other_published_my_comment->getCacheTags());
Chris@0:     $expected_tags = Cache::mergeTags($expected_tags, $other_published_my_comment->getOwner()->getCacheTags());
Chris@0:     // Because the 'user.permissions' cache context is being optimized away.
Chris@0:     $role_tags = [];
Chris@0:     foreach ($this->user->getRoles() as $rid) {
Chris@0:       $role_tags[] = "config:user.role.$rid";
Chris@0:     }
Chris@0:     $expected_tags = Cache::mergeTags($expected_tags, $role_tags);
Chris@0:     $block_tags = [
Chris@0:       'block_view',
Chris@17:       'local_task',
Chris@0:       'config:block.block.page_actions_block',
Chris@0:       'config:block.block.page_tabs_block',
Chris@0:       'config:block_list',
Chris@0:     ];
Chris@0:     $expected_tags = Cache::mergeTags($expected_tags, $block_tags);
Chris@0:     $additional_tags = [
Chris@0:       'node_list',
Chris@0:       'rendered',
Chris@0:     ];
Chris@0:     $expected_tags = Cache::mergeTags($expected_tags, $additional_tags);
Chris@0: 
Chris@0:     $this->assertCacheTags($expected_tags);
Chris@0:     $this->assertCacheContexts(['languages:language_interface', 'route', 'theme', 'url.query_args:' . MainContentViewSubscriber::WRAPPER_FORMAT, 'url.query_args.pagers:0', 'user', 'user.node_grants:view']);
Chris@0: 
Chris@0:     $this->assertLink($my_published->label());
Chris@0:     $this->assertNoLink($unpublished->label());
Chris@0:     // Verify that title and tab title have been set correctly.
Chris@0:     $this->assertText('Activity', 'The user activity tab has the name "Activity".');
Chris@18:     $this->assertTitle(t('@name | @site', ['@name' => $this->user->getAccountName(), '@site' => $this->config('system.site')->get('name')]), 'The user tracker page has the correct page title.');
Chris@0: 
Chris@0:     // Verify that unpublished comments are removed from the tracker.
Chris@0:     $admin_user = $this->drupalCreateUser(['post comments', 'administer comments', 'access user profiles']);
Chris@0:     $this->drupalLogin($admin_user);
Chris@0:     $this->drupalPostForm('comment/1/edit', ['status' => CommentInterface::NOT_PUBLISHED], t('Save'));
Chris@0:     $this->drupalGet('user/' . $this->user->id() . '/activity');
Chris@0:     $this->assertNoText($other_published_my_comment->label(), 'Unpublished comments are not counted on the tracker listing.');
Chris@0: 
Chris@0:     // Test escaping of title on user's tracker tab.
Chris@0:     \Drupal::service('module_installer')->install(['user_hooks_test']);
Chris@0:     Cache::invalidateTags(['rendered']);
Chris@0:     \Drupal::state()->set('user_hooks_test_user_format_name_alter', TRUE);
Chris@0:     $this->drupalGet('user/' . $this->user->id() . '/activity');
Chris@0:     $this->assertEscaped('<em>' . $this->user->id() . '</em>');
Chris@0: 
Chris@0:     \Drupal::state()->set('user_hooks_test_user_format_name_alter_safe', TRUE);
Chris@0:     Cache::invalidateTags(['rendered']);
Chris@0:     $this->drupalGet('user/' . $this->user->id() . '/activity');
Chris@0:     $this->assertNoEscaped('<em>' . $this->user->id() . '</em>');
Chris@0:     $this->assertRaw('<em>' . $this->user->id() . '</em>');
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Tests the metadata for the "new"/"updated" indicators.
Chris@0:    */
Chris@0:   public function testTrackerHistoryMetadata() {
Chris@0:     $this->drupalLogin($this->user);
Chris@0: 
Chris@0:     // Create a page node.
Chris@0:     $edit = [
Chris@0:       'title' => $this->randomMachineName(8),
Chris@0:     ];
Chris@0:     $node = $this->drupalCreateNode($edit);
Chris@0: 
Chris@0:     // Verify that the history metadata is present.
Chris@0:     $this->drupalGet('activity');
Chris@0:     $this->assertHistoryMetadata($node->id(), $node->getChangedTime(), $node->getChangedTime());
Chris@0:     $this->drupalGet('activity/' . $this->user->id());
Chris@0:     $this->assertHistoryMetadata($node->id(), $node->getChangedTime(), $node->getChangedTime());
Chris@0:     $this->drupalGet('user/' . $this->user->id() . '/activity');
Chris@0:     $this->assertHistoryMetadata($node->id(), $node->getChangedTime(), $node->getChangedTime());
Chris@0: 
Chris@0:     // Add a comment to the page, make sure it is created after the node by
Chris@0:     // sleeping for one second, to ensure the last comment timestamp is
Chris@0:     // different from before.
Chris@0:     $comment = [
Chris@0:       'subject[0][value]' => $this->randomMachineName(),
Chris@0:       'comment_body[0][value]' => $this->randomMachineName(20),
Chris@0:     ];
Chris@0:     sleep(1);
Chris@0:     $this->drupalPostForm('comment/reply/node/' . $node->id() . '/comment', $comment, t('Save'));
Chris@0:     // Reload the node so that comment.module's hook_node_load()
Chris@0:     // implementation can set $node->last_comment_timestamp for the freshly
Chris@0:     // posted comment.
Chris@0:     $node = Node::load($node->id());
Chris@0: 
Chris@0:     // Verify that the history metadata is updated.
Chris@0:     $this->drupalGet('activity');
Chris@0:     $this->assertHistoryMetadata($node->id(), $node->getChangedTime(), $node->get('comment')->last_comment_timestamp);
Chris@0:     $this->drupalGet('activity/' . $this->user->id());
Chris@0:     $this->assertHistoryMetadata($node->id(), $node->getChangedTime(), $node->get('comment')->last_comment_timestamp);
Chris@0:     $this->drupalGet('user/' . $this->user->id() . '/activity');
Chris@0:     $this->assertHistoryMetadata($node->id(), $node->getChangedTime(), $node->get('comment')->last_comment_timestamp);
Chris@0: 
Chris@0:     // Log out, now verify that the metadata is still there, but the library is
Chris@0:     // not.
Chris@0:     $this->drupalLogout();
Chris@0:     $this->drupalGet('activity');
Chris@0:     $this->assertHistoryMetadata($node->id(), $node->getChangedTime(), $node->get('comment')->last_comment_timestamp, FALSE);
Chris@0:     $this->drupalGet('user/' . $this->user->id() . '/activity');
Chris@0:     $this->assertHistoryMetadata($node->id(), $node->getChangedTime(), $node->get('comment')->last_comment_timestamp, FALSE);
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Tests for ordering on a users tracker listing when comments are posted.
Chris@0:    */
Chris@0:   public function testTrackerOrderingNewComments() {
Chris@0:     $this->drupalLogin($this->user);
Chris@0: 
Chris@0:     $node_one = $this->drupalCreateNode([
Chris@0:       'title' => $this->randomMachineName(8),
Chris@0:     ]);
Chris@0: 
Chris@0:     $node_two = $this->drupalCreateNode([
Chris@0:       'title' => $this->randomMachineName(8),
Chris@0:     ]);
Chris@0: 
Chris@0:     // Now get otherUser to track these pieces of content.
Chris@0:     $this->drupalLogin($this->otherUser);
Chris@0: 
Chris@0:     // Add a comment to the first page.
Chris@0:     $comment = [
Chris@0:       'subject[0][value]' => $this->randomMachineName(),
Chris@0:       'comment_body[0][value]' => $this->randomMachineName(20),
Chris@0:     ];
Chris@0:     $this->drupalPostForm('comment/reply/node/' . $node_one->id() . '/comment', $comment, t('Save'));
Chris@0: 
Chris@0:     // If the comment is posted in the same second as the last one then Drupal
Chris@0:     // can't tell the difference, so we wait one second here.
Chris@0:     sleep(1);
Chris@0: 
Chris@0:     // Add a comment to the second page.
Chris@0:     $comment = [
Chris@0:       'subject[0][value]' => $this->randomMachineName(),
Chris@0:       'comment_body[0][value]' => $this->randomMachineName(20),
Chris@0:     ];
Chris@0:     $this->drupalPostForm('comment/reply/node/' . $node_two->id() . '/comment', $comment, t('Save'));
Chris@0: 
Chris@0:     // We should at this point have in our tracker for otherUser:
Chris@0:     // 1. node_two
Chris@0:     // 2. node_one
Chris@0:     // Because that's the reverse order of the posted comments.
Chris@0: 
Chris@0:     // Now we're going to post a comment to node_one which should jump it to the
Chris@0:     // top of the list.
Chris@0: 
Chris@0:     $this->drupalLogin($this->user);
Chris@0:     // If the comment is posted in the same second as the last one then Drupal
Chris@0:     // can't tell the difference, so we wait one second here.
Chris@0:     sleep(1);
Chris@0: 
Chris@0:     // Add a comment to the second page.
Chris@0:     $comment = [
Chris@0:       'subject[0][value]' => $this->randomMachineName(),
Chris@0:       'comment_body[0][value]' => $this->randomMachineName(20),
Chris@0:     ];
Chris@0:     $this->drupalPostForm('comment/reply/node/' . $node_one->id() . '/comment', $comment, t('Save'));
Chris@0: 
Chris@0:     // Switch back to the otherUser and assert that the order has swapped.
Chris@0:     $this->drupalLogin($this->otherUser);
Chris@0:     $this->drupalGet('user/' . $this->otherUser->id() . '/activity');
Chris@0:     // This is a cheeky way of asserting that the nodes are in the right order
Chris@0:     // on the tracker page.
Chris@0:     // It's almost certainly too brittle.
Chris@0:     $pattern = '/' . preg_quote($node_one->getTitle()) . '.+' . preg_quote($node_two->getTitle()) . '/s';
Chris@0:     $this->verbose($pattern);
Chris@0:     $this->assertPattern($pattern, 'Most recently commented on node appears at the top of tracker');
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Tests that existing nodes are indexed by cron.
Chris@0:    */
Chris@0:   public function testTrackerCronIndexing() {
Chris@0:     $this->drupalLogin($this->user);
Chris@0: 
Chris@0:     // Create 3 nodes.
Chris@0:     $edits = [];
Chris@0:     $nodes = [];
Chris@0:     for ($i = 1; $i <= 3; $i++) {
Chris@0:       $edits[$i] = [
Chris@0:         'title' => $this->randomMachineName(),
Chris@0:       ];
Chris@0:       $nodes[$i] = $this->drupalCreateNode($edits[$i]);
Chris@0:     }
Chris@0: 
Chris@0:     // Add a comment to the last node as other user.
Chris@0:     $this->drupalLogin($this->otherUser);
Chris@0:     $comment = [
Chris@0:       'subject[0][value]' => $this->randomMachineName(),
Chris@0:       'comment_body[0][value]' => $this->randomMachineName(20),
Chris@0:     ];
Chris@0:     $this->drupalPostForm('comment/reply/node/' . $nodes[3]->id() . '/comment', $comment, t('Save'));
Chris@0: 
Chris@16:     // Create an unpublished node.
Chris@16:     $unpublished = $this->drupalCreateNode([
Chris@16:       'title' => $this->randomMachineName(8),
Chris@16:       'status' => 0,
Chris@16:     ]);
Chris@16: 
Chris@16:     // Start indexing backwards from node 4.
Chris@16:     \Drupal::state()->set('tracker.index_nid', 4);
Chris@0: 
Chris@0:     // Clear the current tracker tables and rebuild them.
Chris@18:     $connection = Database::getConnection();
Chris@18:     $connection->delete('tracker_node')
Chris@0:       ->execute();
Chris@18:     $connection->delete('tracker_user')
Chris@0:       ->execute();
Chris@0:     tracker_cron();
Chris@0: 
Chris@0:     $this->drupalLogin($this->user);
Chris@0: 
Chris@0:     // Fetch the user's tracker.
Chris@0:     $this->drupalGet('activity/' . $this->user->id());
Chris@0: 
Chris@0:     // Assert that all node titles are displayed.
Chris@0:     foreach ($nodes as $i => $node) {
Chris@0:       $this->assertText($node->label(), format_string('Node @i is displayed on the tracker listing pages.', ['@i' => $i]));
Chris@0:     }
Chris@0: 
Chris@0:     // Fetch the site-wide tracker.
Chris@0:     $this->drupalGet('activity');
Chris@0: 
Chris@0:     // Assert that all node titles are displayed.
Chris@0:     foreach ($nodes as $i => $node) {
Chris@0:       $this->assertText($node->label(), format_string('Node @i is displayed on the tracker listing pages.', ['@i' => $i]));
Chris@0:     }
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Tests that publish/unpublish works at admin/content/node.
Chris@0:    */
Chris@0:   public function testTrackerAdminUnpublish() {
Chris@0:     \Drupal::service('module_installer')->install(['views']);
Chris@0:     \Drupal::service('router.builder')->rebuild();
Chris@0:     $admin_user = $this->drupalCreateUser(['access content overview', 'administer nodes', 'bypass node access']);
Chris@0:     $this->drupalLogin($admin_user);
Chris@0: 
Chris@0:     $node = $this->drupalCreateNode([
Chris@0:       'title' => $this->randomMachineName(),
Chris@0:     ]);
Chris@0: 
Chris@0:     // Assert that the node is displayed.
Chris@0:     $this->drupalGet('activity');
Chris@0:     $this->assertText($node->label(), 'A node is displayed on the tracker listing pages.');
Chris@0: 
Chris@0:     // Unpublish the node and ensure that it's no longer displayed.
Chris@0:     $edit = [
Chris@0:       'action' => 'node_unpublish_action',
Chris@0:       'node_bulk_form[0]' => $node->id(),
Chris@0:     ];
Chris@0:     $this->drupalPostForm('admin/content', $edit, t('Apply to selected items'));
Chris@0: 
Chris@0:     $this->drupalGet('activity');
Chris@0:     $this->assertText(t('No content available.'), 'A node is displayed on the tracker listing pages.');
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Passes if the appropriate history metadata exists.
Chris@0:    *
Chris@0:    * Verify the data-history-node-id, data-history-node-timestamp and
Chris@0:    * data-history-node-last-comment-timestamp attributes, which are used by the
Chris@0:    * drupal.tracker-history library to add the appropriate "new" and "updated"
Chris@0:    * indicators, as well as the "x new" replies link to the tracker.
Chris@0:    * We do this in JavaScript to prevent breaking the render cache.
Chris@0:    *
Chris@0:    * @param int $node_id
Chris@0:    *   A node ID, that must exist as a data-history-node-id attribute
Chris@0:    * @param int $node_timestamp
Chris@0:    *   A node timestamp, that must exist as a data-history-node-timestamp
Chris@0:    *   attribute.
Chris@0:    * @param int $node_last_comment_timestamp
Chris@0:    *   A node's last comment timestamp, that must exist as a
Chris@0:    *   data-history-node-last-comment-timestamp attribute.
Chris@0:    * @param bool $library_is_present
Chris@0:    *   Whether the drupal.tracker-history library should be present or not.
Chris@0:    */
Chris@0:   public function assertHistoryMetadata($node_id, $node_timestamp, $node_last_comment_timestamp, $library_is_present = TRUE) {
Chris@0:     $settings = $this->getDrupalSettings();
Chris@0:     $this->assertIdentical($library_is_present, isset($settings['ajaxPageState']) && in_array('tracker/history', explode(',', $settings['ajaxPageState']['libraries'])), 'drupal.tracker-history library is present.');
Chris@0:     $this->assertIdentical(1, count($this->xpath('//table/tbody/tr/td[@data-history-node-id="' . $node_id . '" and @data-history-node-timestamp="' . $node_timestamp . '"]')), 'Tracker table cell contains the data-history-node-id and data-history-node-timestamp attributes for the node.');
Chris@0:     $this->assertIdentical(1, count($this->xpath('//table/tbody/tr/td[@data-history-node-last-comment-timestamp="' . $node_last_comment_timestamp . '"]')), 'Tracker table cell contains the data-history-node-last-comment-timestamp attribute for the node.');
Chris@0:   }
Chris@0: 
Chris@0: }