inline_image_saver-1.0.x-dev/tests/src/Traits/InlineImageTestTrait.php

<?php

declare(strict_types=1);

namespace Drupal\Tests\inline_image_saver\Traits;

use Drupal\Component\Utility\Html;

/**
 * Provides methods to create image markup and extract image from markup.
 */
trait InlineImageTestTrait {

  /**
   * The text format being tested.
   */
  protected string $processableFormatId;

  /**
   * Extracts <img> element from markup.
   */
  protected function extractImageElement(string $markup): \DOMElement {
    $img = Html::load($markup)->getElementsByTagName('img')->item(0);
    $this->assertInstanceOf(\DOMElement::class, $img);
    return $img;
  }

  /**
   * Creates markup with image.
   */
  protected function createImageMarkup(array $attributes): string {
    $element['some_text_1'] = [
      '#type' => 'html_tag',
      '#tag' => 'p',
      '#value' => $this->randomMachineName(16),
    ];
    $element['image_container'] = [
      '#type' => 'html_tag',
      '#tag' => 'p',
      'image' => [
        '#type' => 'html_tag',
        '#tag' => 'img',
        '#attributes' => $attributes,
      ],
    ];
    $element['some_text_2'] = [
      '#type' => 'html_tag',
      '#tag' => 'p',
      '#value' => $this->randomMachineName(32),
    ];
    $markup = (string) $this->container->get('renderer')->renderInIsolation($element);
    return Html::normalize((string) check_markup($markup, $this->processableFormatId));
  }

}