DrupalMessengerServiceTest.php

<?php

namespace Drupal\Tests\system\Functional\Bootstrap;

use Drupal\Core\Url;
use Drupal\Tests\BrowserTestBase;

/**
 * Tests the Messenger service.
 *
 * @group Bootstrap
 */
class DrupalMessengerServiceTest extends BrowserTestBase {
  
  /**
   * Modules to enable.
   *
   * @var array
   */
  public static $modules = [
    'system_test',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * Tests Messenger service.
   */
  public function testDrupalMessengerService() {
    // The page at system_test.messenger_service route sets two messages and
    // then removes the first before it is displayed.
    $this->drupalGet(Url::fromRoute('system_test.messenger_service'));
    $this->assertNoText('First message (removed).');
    $this->assertRaw(t('Second message with <em>markup!</em> (not removed).'));
    // Ensure duplicate messages are handled as expected.
    $this->assertUniqueText('Non Duplicated message');
    $this->assertNoUniqueText('Duplicated message');
    // Ensure Markup objects are rendered as expected.
    $this->assertRaw('Markup with <em>markup!</em>');
    $this->assertUniqueText('Markup with markup!');
    $this->assertRaw('Markup2 with <em>markup!</em>');
    // Ensure when the same message is of different types it is not duplicated.
    $this->assertUniqueText('Non duplicate Markup / string.');
    $this->assertNoUniqueText('Duplicate Markup / string.');
    // Ensure that strings that are not marked as safe are escaped.
    $this->assertEscaped('<em>This<span>markup will be</span> escaped</em>.');
  }

}