Issue #2904546 by mrweiner, vsujeetkumar, quietone, dev.patrick, MaskOta,...

   *   A redirect response object that may be returned by the controller.

   */

  public function showLog() {

    // Sets both the session and the query parameter so that it works correctly

    // with both the watchdog view and the fallback.

    $_SESSION['dblog_overview_filter'] = [];

    $_SESSION['dblog_overview_filter']['type'] = ['migrate_drupal_ui' => 'migrate_drupal_ui'];

    return $this->redirect('dblog.overview');

    return $this->redirect('dblog.overview', [], ['query' => ['type' => ['migrate_drupal_ui']]]);

  }

}

<?php

namespace Drupal\Tests\migrate_drupal_ui\Functional;

use Drupal\views\Entity\View;

use Drupal\Tests\BrowserTestBase;

/**

 * Tests for the MigrateController class.

 *

 * @group migrate_drupal_ui

 */

class MigrateControllerTest extends BrowserTestBase {

  /**

   * {@inheritdoc}

   */

  protected static $modules = [

    'dblog',

    'migrate_drupal_ui',

    'views_ui',

  ];

  /**

   * {@inheritdoc}

   */

  protected $defaultTheme = 'stark';

  /**

   * {@inheritdoc}

   */

  protected function setUp() {

    parent::setUp();

    // Log in as user 1. Migrations in the UI can only be performed as user 1.

    $this->drupalLogin($this->rootUser);

    // Create a migrate message for testing purposes.

    \Drupal::logger('migrate_drupal_ui')->notice('A test message');

  }

  /**

   * Tests the upgrade report with the view enabled, disabled and uninstalled.

   */

  public function testUpgradeReport() {

    $session = $this->assertSession();

    $this->assertTrue(View::load('watchdog')->status(), 'Watchdog view is enabled');

    // Tests redirection to report page when the watchdog view is enabled.

    $this->drupalGet('admin/reports/upgrade');

    $session->optionExists('type[]', 'migrate_drupal_ui')->isSelected();

    $session->pageTextContainsOnce('A test message');

    // Disable the watchdog view.

    $this->drupalGet('admin/structure/views');

    $this->assertTrue($this->clickViewsOperationsLink('Disable', '/watchdog/'));

    $session->statusCodeEquals(200);

    // Tests redirection to report page when the watchdog view is disabled.

    $this->drupalGet('admin/reports/upgrade');

    $session->optionExists('type[]', 'migrate_drupal_ui')->isSelected();

    $session->pageTextContainsOnce('A test message');

    \Drupal::service('module_installer')->uninstall(['views_ui', 'views']);

    // Tests redirection to report page when views is uninstalled.

    $this->drupalGet('admin/reports/upgrade');

    $session->optionExists('type[]', 'migrate_drupal_ui')->isSelected();

    $session->pageTextContainsOnce('A test message');

  }

  /**

   * Clicks a view link to perform an operation.

   *

   * @param string $label

   *   Text between the anchor tags of the link.

   * @param string $href_part

   *   A unique string that is expected to occur within the href of the link.

   *

   * @return bool

   *   TRUE when link found and clicked, otherwise FALSE.

   */

  public function clickViewsOperationsLink($label, $href_part) {

    $links = $this->xpath('//a[normalize-space(text())=:label]', [':label' => (string) $label]);

    foreach ($links as $link_index => $link) {

      $position = strpos($link->getAttribute('href'), $href_part);

      if ($position !== FALSE) {

        $index = $link_index;

        $this->clickLink((string) $label, $index);

        return TRUE;

      }

    }

    return FALSE;

  }

}