class NodeRevisionsAllTest

class NodeRevisionsAllTest extends NodeTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * A list of nodes created to be used as starting point of different tests.
   *
   * @var \Drupal\node\NodeInterface[]
   */
  protected $nodes;
  
  /**
   * Revision logs of nodes created by the setup method.
   *
   * @var string[]
   */
  protected $revisionLogs;
  
  /**
   * An arbitrary user for revision authoring.
   *
   * @var \Drupal\user\UserInterface
   */
  protected $revisionUser;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    // Create and log in user.
    $web_user = $this->drupalCreateUser([
      'view page revisions',
      'revert page revisions',
      'delete page revisions',
      'edit any page content',
      'delete any page content',
    ]);
    $this->drupalLogin($web_user);
    // Create an initial node.
    $node = $this->drupalCreateNode();
    // Create a user for revision authoring.
    // This must be different from user performing revert.
    $this->revisionUser = $this->drupalCreateUser();
    $settings = get_object_vars($node);
    $settings['revision'] = 1;
    $nodes = [];
    $logs = [];
    // Get the original node.
    $nodes[] = clone $node;
    // Create three revisions.
    $revision_count = 3;
    for ($i = 0; $i < $revision_count; $i++) {
      $logs[] = $node->revision_log = $this->randomMachineName(32);
      $node = $this->createNodeRevision($node);
      $nodes[] = clone $node;
    }
    $this->nodes = $nodes;
    $this->revisionLogs = $logs;
  }
  
  /**
   * Creates a new revision for a given node.
   *
   * @param \Drupal\node\NodeInterface $node
   *   A node object.
   *
   * @return \Drupal\node\NodeInterface
   *   A node object with up to date revision information.
   */
  protected function createNodeRevision(NodeInterface $node) {
    // Create revision with a random title and body and update variables.
    $node->title = $this->randomMachineName();
    $node->body = [
      'value' => $this->randomMachineName(32),
      'format' => filter_default_format(),
    ];
    $node->setNewRevision();
    // Ensure the revision author is a different user.
    $node->setRevisionUserId($this->revisionUser
      ->id());
    $node->save();
    return $node;
  }
  
  /**
   * Checks node revision operations.
   */
  public function testRevisions() {
    $node_storage = $this->container
      ->get('entity_type.manager')
      ->getStorage('node');
    $nodes = $this->nodes;
    $logs = $this->revisionLogs;
    // Get last node for simple checks.
    $node = $nodes[3];
    // Create and log in user.
    $content_admin = $this->drupalCreateUser([
      'view all revisions',
      'revert all revisions',
      'delete all revisions',
      'edit any page content',
      'delete any page content',
    ]);
    $this->drupalLogin($content_admin);
    // Confirm the correct revision text appears on "view revisions" page.
    $this->drupalGet("node/" . $node->id() . "/revisions/" . $node->getRevisionId() . "/view");
    $this->assertSession()
      ->pageTextContains($node->body->value);
    // Confirm the correct revision log message appears on the "revisions
    // overview" page.
    $this->drupalGet("node/" . $node->id() . "/revisions");
    foreach ($logs as $revision_log) {
      $this->assertSession()
        ->pageTextContains($revision_log);
    }
    // Confirm that this is the current revision.
    $this->assertTrue($node->isDefaultRevision(), 'Third node revision is the current one.');
    // Confirm that revisions revert properly.
    $this->drupalGet("node/" . $node->id() . "/revisions/" . $nodes[1]->getRevisionId() . "/revert");
    $this->submitForm([], 'Revert');
    $this->assertSession()
      ->pageTextContains("Basic page {$nodes[1]->getTitle()} has been reverted to the revision from {$this->container->get('date.formatter')->format($nodes[1]->getRevisionCreationTime())}.");
    $node_storage->resetCache([
      $node->id(),
    ]);
    $reverted_node = $node_storage->load($node->id());
    $this->assertSame($nodes[1]->body->value, $reverted_node->body->value, 'Node reverted correctly.');
    // Confirm the revision author is the user performing the revert.
    $this->assertSame($this->loggedInUser
      ->id(), $reverted_node->getRevisionUserId(), 'Node revision author is user performing revert.');
    // And that its not the revision author.
    $this->assertNotSame($this->revisionUser
      ->id(), $reverted_node->getRevisionUserId(), 'Node revision author is not original revision author.');
    // Confirm that this is not the current version.
    $node = node_revision_load($node->getRevisionId());
    $this->assertFalse($node->isDefaultRevision(), 'Third node revision is not the current one.');
    // Confirm that the node can still be updated.
    $this->drupalGet("node/" . $reverted_node->id() . "/edit");
    $this->submitForm([
      'body[0][value]' => 'We are Drupal.',
    ], 'Save');
    $this->assertSession()
      ->pageTextContains('Basic page ' . $reverted_node->getTitle() . ' has been updated.');
    $this->assertSession()
      ->pageTextContains('We are Drupal.');
    // Confirm revisions delete properly.
    $this->drupalGet("node/" . $node->id() . "/revisions/" . $nodes[1]->getRevisionId() . "/delete");
    $this->submitForm([], 'Delete');
    $this->assertSession()
      ->pageTextContains("Revision from {$this->container->get('date.formatter')->format($nodes[1]->getRevisionCreationTime())} of Basic page {$nodes[1]->getTitle()} has been deleted.");
    $nids = \Drupal::entityQuery('node')->allRevisions()
      ->accessCheck(FALSE)
      ->condition('nid', $node->id())
      ->condition('vid', $nodes[1]->getRevisionId())
      ->execute();
    $this->assertCount(0, $nids);
    // Set the revision timestamp to an older date to make sure that the
    // confirmation message correctly displays the stored revision date.
    $old_revision_date = REQUEST_TIME - 86400;
    Database::getConnection()->update('node_revision')
      ->condition('vid', $nodes[2]->getRevisionId())
      ->fields([
      'revision_timestamp' => $old_revision_date,
    ])
      ->execute();
    $this->drupalGet("node/" . $node->id() . "/revisions/" . $nodes[2]->getRevisionId() . "/revert");
    $this->submitForm([], 'Revert');
    $this->assertSession()
      ->pageTextContains("Basic page {$nodes[2]->getTitle()} has been reverted to the revision from {$this->container->get('date.formatter')->format($old_revision_date)}.");
    // Create 50 more revisions in order to trigger paging on the revisions
    // overview screen.
    $node = $nodes[0];
    for ($i = 0; $i < 50; $i++) {
      $logs[] = $node->revision_log = $this->randomMachineName(32);
      $node = $this->createNodeRevision($node);
      $nodes[] = clone $node;
    }
    $this->drupalGet('node/' . $node->id() . '/revisions');
    // Check that the pager exists.
    $this->assertSession()
      ->responseContains('page=1');
    // Check that the last revision is displayed on the first page.
    $this->assertSession()
      ->pageTextContains(end($logs));
    // Go to the second page and check that one of the initial three revisions
    // is displayed.
    $this->clickLink('Page 2');
    $this->assertSession()
      ->pageTextContains($logs[2]);
  }

}