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>.');
    }

}