Issue #3320295 by srishtiiee, bnjmnm: Add test for relative to absolute URL conversion

<?php

namespace Drupal\Tests\project_browser\Unit;

use Drupal\Core\Cache\CacheBackendInterface;

use Drupal\Core\Database\Connection;

use Drupal\project_browser\Plugin\ProjectBrowserSource\MockDrupalDotOrg;

use Drupal\Tests\UnitTestCase;

use GuzzleHttp\ClientInterface;

use Psr\Log\LoggerInterface;

/**

 * Tests plugin functions.

 *

 * @group project_browser

 */

class MockDrupalDotOrgTest extends UnitTestCase {

  /**

   * The plugin.

   *

   * @var \Drupal\project_browser\Plugin\ProjectBrowserSource\MockDrupalDotOrg

   */

  protected $plugin;

  /**

   * A logger instance.

   *

   * @var \Psr\Log\LoggerInterface

   */

  protected $logger;

  /**

   * The database connection.

   *

   * @var \Drupal\Core\Database\Connection

   */

  protected $database;

  /**

   * The HTTP client.

   *

   * @var \GuzzleHttp\ClientInterface

   */

  protected $httpClient;

  /**

   * The state object.

   *

   * @var \Drupal\Core\State\StateInterface

   */

  protected $state;

  /**

   * ProjectBrowser cache bin.

   *

   * @var \Drupal\Core\Cache\CacheBackendInterface

   */

  protected $cacheBin;

  /**

   * {@inheritdoc}

   */

  protected function setUp(): void {

    $this->logger = $this->createMock(LoggerInterface::class);

    $this->database = $this->createMock(Connection::class);

    $this->httpClient = $this->createMock(ClientInterface::class);

    $this->cacheBin = $this->createMock(CacheBackendInterface::class);

    $this->state = $this->createMock('\Drupal\Core\State\StateInterface');

    $configuration = [];

    $plugin_id = $this->randomMachineName();

    $plugin_definition = [];

    $this->plugin = new MockDrupalDotOrg($configuration, $plugin_id, $plugin_definition, $this->logger, $this->database, $this->httpClient, $this->state, $this->cacheBin);

  }

  /**

   * Gets a protected/private method to test.

   *

   * @param string $name

   *   The method name.

   *

   * @return \ReflectionMethod

   *   The accessible method.

   */

  protected static function getMethod($name) {

    $class = new \ReflectionClass(MockDrupalDotOrg::class);

    $method = $class->getMethod($name);

    $method->setAccessible(TRUE);

    return $method;

  }

  /**

   * Tests relative to absolute URL conversion.

   */

  public function testRelativeToAbsoluteUrl() {

    // Project body with relative URLs.

    $project_data['body'] = ['value' => '<img src="/files/issues/123" alt="Image1" /><img src="/files/issues/321" alt="Image2" />'];

    // Expected Absolute URLs.

    $expected = ['value' => '<img src="https://www.drupal.org/files/issues/123" alt="Image1" /><img src="https://www.drupal.org/files/issues/321" alt="Image2" />'];

    $method = self::getMethod('relativeToAbsoluteUrls');

    $after_conversion = $method->invokeArgs($this->plugin, [$project_data['body'], 'https://www.drupal.org']);

    $this->assertSame($expected, $after_conversion);

  }

}