class GdToolkitPngImageManipulationTest

class GdToolkitPngImageManipulationTest extends GdToolkitImageManipulationTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected string $sourceTestImage = 'image-test.png';
  
  /**
   * Tests that GD doesn't trigger warnings for iCCP sRGB profiles.
   *
   * If image is saved with 'sRGB IEC61966-2.1' sRGB profile, GD will trigger
   * a warning about an incorrect sRGB profile'.
   */
  public function testIncorrectIccpSrgbProfile(string $image_uri) : void {
    $warning_detected = FALSE;
    // @see https://github.com/sebastianbergmann/phpunit/issues/5062
    $error_handler = static function () use (&$warning_detected) : void {
      $warning_detected = TRUE;
    };
    // $error_level is intentionally set to 0. It's required for PHP '@'
    // suppression not to trigger Drupal error handler. In that case native
    // PHP handler will be called and Drupal's will serve like a notification.
    set_error_handler($error_handler, 0);
    $image_factory = $this->container
      ->get('image.factory');
    \assert($image_factory instanceof ImageFactory);
    $image = $image_factory->get($image_uri, 'gd');
    // We need to do any image manipulation to trigger GD profile loading.
    $image->resize('100', '100');
    self::assertFalse($warning_detected);
    restore_error_handler();
  }
  
  /**
   * Provides a list of PNG image URIs for testing.
   *
   * @return \Generator
   *   The test data.
   */
  public static function pngImageProvider() : \Generator {
    yield 'valid image 1' => [
      'core/tests/fixtures/files/image-1.png',
    ];
    yield 'valid image 2' => [
      'core/tests/fixtures/files/image-test.png',
    ];
    yield 'PNG with iCCP profile' => [
      'core/tests/fixtures/files/image-test-iccp-profile.png',
    ];
  }

}