FilterHtmlTest.php

<?php

declare (strict_types=1);
namespace Drupal\Tests\filter\Unit;

use Drupal\Tests\UnitTestCase;
use Drupal\filter\Plugin\Filter\FilterHtml;

/**
 * @coversDefaultClass \Drupal\filter\Plugin\Filter\FilterHtml
 * @group filter
 */
class FilterHtmlTest extends UnitTestCase {
  
  /**
   * The filter to test.
   *
   * @var \Drupal\filter\Plugin\Filter\FilterHtml
   */
  protected $filter;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $configuration['settings'] = [
      'allowed_html' => '<a href> <p> <em> <strong> <cite> <blockquote> <code class="pretty boring align-*"> <ul alpaca-*="wooly-* strong"> <ol llama-*> <li> <dl> <dt> <dd> <br> <h3 id>',
      'filter_html_help' => 1,
      'filter_html_nofollow' => 0,
    ];
    $this->filter = new FilterHtml($configuration, 'filter_html', [
      'provider' => 'test',
    ]);
    $this->filter
      ->setStringTranslation($this->getStringTranslationStub());
  }
  
  /**
   * @covers ::filterAttributes
   *
   * @dataProvider providerFilterAttributes
   *
   * @param string $html
   *   Input HTML.
   * @param string $expected
   *   The expected output string.
   */
  public function testFilterAttributes($html, $expected) : void {
    $this->assertSame($expected, $this->filter
      ->filterAttributes($html));
  }
  
  /**
   * Provides data for testFilterAttributes.
   *
   * @return array
   *   An array of test data.
   */
  public static function providerFilterAttributes() {
    return [
      [
        '<a href="/blog" title="Blog">Blog</a>',
        '<a href="/blog">Blog</a>',
      ],
      [
        '<p dir="rtl" />',
        '<p dir="rtl"></p>',
      ],
      [
        '<p dir="bogus" />',
        '<p></p>',
      ],
      [
        '<p id="first" />',
        '<p></p>',
      ],
      [
        '<p id="first" lang="en">text</p>',
        '<p lang="en">text</p>',
      ],
      [
        '<p style="display: none;" />',
        '<p></p>',
      ],
      [
        '<code class="pretty invalid">foreach ($a as $b) {}</code>',
        '<code class="pretty">foreach ($a as $b) {}</code>',
      ],
      [
        '<code class="boring pretty">foreach ($a as $b) {}</code>',
        '<code class="boring pretty">foreach ($a as $b) {}</code>',
      ],
      [
        '<code class="boring    pretty ">foreach ($a as $b) {}</code>',
        '<code class="boring pretty">foreach ($a as $b) {}</code>',
      ],
      [
        '<code class="invalid alpaca">foreach ($a as $b) {}</code>',
        '<code>foreach ($a as $b) {}</code>',
      ],
      [
        '<h3 class="big">a heading</h3>',
        '<h3>a heading</h3>',
      ],
      [
        '<h3 id="first">a heading</h3>',
        '<h3 id="first">a heading</h3>',
      ],
      // Wildcard value. Case matters, so upper case doesn't match.
[
        '<code class="align-left bold">foreach ($a as $b) {}</code>',
        '<code class="align-left">foreach ($a as $b) {}</code>',
      ],
      [
        '<code class="align-right ">foreach ($a as $b) {}</code>',
        '<code class="align-right">foreach ($a as $b) {}</code>',
      ],
      [
        '<code class="Align-right ">foreach ($a as $b) {}</code>',
        '<code>foreach ($a as $b) {}</code>',
      ],
      // Wildcard name, case is ignored.
[
        '<ol style="display: none;" llama-wim="noble majestic"></ol>',
        '<ol llama-wim="noble majestic"></ol>',
      ],
      [
        '<ol style="display: none;" LlamA-Wim="majestic"></ol>',
        '<ol llama-wim="majestic"></ol>',
      ],
      [
        '<ol style="display: none;" llama-="noble majestic"></ol>',
        '<ol llama-="noble majestic"></ol>',
      ],
      // Both wildcard names and values.
[
        '<ul style="display: none;" alpaca-wool="wooly-warm strong majestic"></ul>',
        '<ul alpaca-wool="wooly-warm strong"></ul>',
      ],
    ];
  }
  
  /**
   * @covers ::setConfiguration
   */
  public function testSetConfiguration() : void {
    $configuration['settings'] = [
      // New lines and spaces are replaced with a single space.
'allowed_html' => "<a>  <br>\r\n  <p>",
      'filter_html_help' => 1,
      'filter_html_nofollow' => 0,
    ];
    $filter = new FilterHtml($configuration, 'filter_html', [
      'provider' => 'test',
    ]);
    $this->assertSame('<a> <br> <p>', $filter->getConfiguration()['settings']['allowed_html']);
  }

}