ViewsNoResultsBehaviorTest.php

<?php

declare (strict_types=1);
namespace Drupal\Tests\views\Functional;


/**
 * Tests no results behavior.
 *
 * @group views
 */
class ViewsNoResultsBehaviorTest extends ViewTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'node',
    'user',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * {@inheritdoc}
   */
  protected function setUp($import_test_views = TRUE, $modules = []) : void {
    parent::setUp($import_test_views, $modules);
    $this->enableViewsTestModule();
    $user = $this->createUser([], NULL, TRUE);
    $this->drupalLogin($user);
    // Set the Stark theme and use the default templates from views module.
    /** @var \Drupal\Core\Extension\ThemeInstallerInterface $theme_installer */
    $theme_installer = \Drupal::service('theme_installer');
    $theme_installer->install([
      'stark',
    ]);
    $this->config('system.theme')
      ->set('default', 'stark')
      ->save();
  }
  
  /**
   * Tests the view with the text.
   */
  public function testDuplicateText() : void {
    $output = $this->drupalGet('admin/content');
    $this->assertEquals(1, substr_count($output, 'No content available.'), 'Only one message should be present');
  }

}