FilterNoFormatTest.php

<?php

namespace Drupal\Tests\filter\Kernel;

use Drupal\KernelTests\KernelTestBase;

/**
 * Tests the behavior of check_markup() when it is called without text format.
 *
 * @group filter
 */
class FilterNoFormatTest extends KernelTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'filter',
    ];
    
    /**
     * Tests text without format.
     *
     * Tests if text with no format is filtered the same way as text in the
     * fallback format.
     */
    public function testCheckMarkupNoFormat() {
        $this->installConfig([
            'filter',
        ]);
        // Create some text. Include some HTML and line breaks, so we get a good
        // test of the filtering that is applied to it.
        $text = "<strong>" . $this->randomMachineName(32) . "</strong>\n\n<div>" . $this->randomMachineName(32) . "</div>";
        // Make sure that when this text is run through check_markup() with no text
        // format, it is filtered as though it is in the fallback format.
        $this->assertEquals(check_markup($text), check_markup($text, filter_fallback_format()));
    }

}