Issue #2688535 by amateescu, alexpott, xjm, cilefen, olegiv: User deletion -...

 *   An array of node IDs.

 * @param array $updates

 *   Associative array of updates.

 * @param string $langcode

 *   The language updates should be applied to. If none is specified all

 *   available languages are processed.

 * @param bool $load

 *   TRUE if $nodes contains an array of node IDs to be loaded, FALSE if it

 *   contains fully loaded nodes.

 * @param array|\ArrayAccess $context.

 *   An array of contextual key/values.

 */

function _node_mass_update_batch_process(array $nodes, array $updates, $load, $revisions, &$context) {

function _node_mass_update_batch_process(array $nodes, array $updates, $langcode, $load, $revisions, &$context) {

  if (!isset($context['sandbox']['progress'])) {

    $context['sandbox']['progress'] = 0;

    $context['sandbox']['max'] = count($nodes);

      $node = $revisions ?

        entity_revision_load('node', $node) : Node::load($node);

    }

    $node = _node_mass_update_helper($node, $updates);

    $node = _node_mass_update_helper($node, $updates, $langcode);

    // Store result for post-processing in the finished callback.

    $context['results'][] = \Drupal::l($node->label(), $node->urlInfo());

    $this->assertRaw(t('%name has been deleted.', array('%name' => $account->getUsername())), "Confirmation message displayed to user.");

  }

  /**

   * Delete account and anonymize all content using a batch process.

   */

  public function testUserAnonymizeBatch() {

    $node_storage = $this->container->get('entity.manager')->getStorage('node');

    $this->config('user.settings')->set('cancel_method', 'user_cancel_reassign')->save();

    $user_storage = $this->container->get('entity.manager')->getStorage('user');

    // Create a user.

    $account = $this->drupalCreateUser(array('cancel account'));

    $this->drupalLogin($account);

    // Load a real user object.

    $user_storage->resetCache([$account->id()]);

    $account = $user_storage->load($account->id());

    // Create 11 nodes in order to trigger batch processing in

    // node_mass_update().

    $nodes = [];

    for ($i = 0; $i < 11; $i++) {

      $node = $this->drupalCreateNode(['uid' => $account->id()]);

      $nodes[$node->id()] = $node;

    }

    // Attempt to cancel account.

    $this->drupalGet('user/' . $account->id() . '/edit');

    $this->drupalPostForm(NULL, NULL, t('Cancel account'));

    $this->assertText(t('Are you sure you want to cancel your account?'), 'Confirmation form to cancel account displayed.');

    $this->assertRaw(t('Your account will be removed and all account information deleted. All of your content will be assigned to the %anonymous-name user.', array('%anonymous-name' => $this->config('user.settings')->get('anonymous'))), 'Informs that all content will be attributed to anonymous account.');

    // Confirm account cancellation.

    $timestamp = time();

    $this->drupalPostForm(NULL, NULL, t('Cancel account'));

    $this->assertText(t('A confirmation request to cancel your account has been sent to your email address.'), 'Account cancellation request mailed message displayed.');

    // Confirm account cancellation request.

    $this->drupalGet("user/" . $account->id() . "/cancel/confirm/$timestamp/" . user_pass_rehash($account, $timestamp));

    $user_storage->resetCache([$account->id()]);

    $this->assertFalse($user_storage->load($account->id()), 'User is not found in the database.');

    // Confirm that user's content has been attributed to anonymous user.

    $node_storage->resetCache(array_keys($nodes));

    $test_nodes = $node_storage->loadMultiple(array_keys($nodes));

    foreach ($test_nodes as $test_node) {

      $this->assertTrue(($test_node->getOwnerId() == 0 && $test_node->isPublished()), 'Node ' . $test_node->id() . ' of the user has been attributed to anonymous user.');

    }

  }

  /**

   * Delete account and remove all content.

   */