function ImageThemeFunctionTest::testImageFormatterTheme

Tests usage of the image field formatters.

File

core/modules/image/tests/src/Kernel/ImageThemeFunctionTest.php, line 87

Class

ImageThemeFunctionTest

Tests image theme functions.

Namespace

Code

public function testImageFormatterTheme() : void {
  /** @var \Drupal\Core\Render\RendererInterface $renderer */
  $renderer = $this->container
    ->get('renderer');
  // Create an image.
  $files = $this->drupalGetTestFiles('image');
  $file = reset($files);
  $original_uri = \Drupal::service('file_system')->copy($file->uri, 'public://', FileExists::Rename);
  // Create a style.
  $style = ImageStyle::create([
    'name' => 'test',
    'label' => 'Test',
  ]);
  $style->save();
  $url = \Drupal::service('file_url_generator')->transformRelative($style->buildUrl($original_uri));
  // Create a test entity with the image field set.
  $entity = EntityTest::create();
  $entity->image_test->target_id = $this->image
    ->id();
  $entity->image_test->alt = NULL;
  $entity->image_test->uri = $original_uri;
  $image = $this->imageFactory
    ->get('public://example.jpg');
  $entity->save();
  // Create the base element that we'll use in the tests below.
  $path = $this->randomMachineName();
  $base_element = [
    '#theme' => 'image_formatter',
    '#image_style' => 'test',
    '#item' => $entity->image_test,
    '#url' => Url::fromUri('base:' . $path),
  ];
  // Test using theme_image_formatter() with a NULL value for the alt option.
  $element = $base_element;
  $this->setRawContent($renderer->renderRoot($element));
  $elements = $this->xpath('//a[@href=:path]/img[@src=:url and @width=:width and @height=:height]', [
    ':path' => base_path() . $path,
    ':url' => $url,
    ':width' => $image->getWidth(),
    ':height' => $image->getHeight(),
  ]);
  $this->assertCount(1, $elements, 'theme_image_formatter() correctly renders with a NULL value for the alt option.');
  // Test using theme_image_formatter() without an image title, alt text, or
  // link options.
  $element = $base_element;
  $element['#item']->alt = '';
  $this->setRawContent($renderer->renderRoot($element));
  $elements = $this->xpath('//a[@href=:path]/img[@src=:url and @width=:width and @height=:height and @alt=""]', [
    ':path' => base_path() . $path,
    ':url' => $url,
    ':width' => $image->getWidth(),
    ':height' => $image->getHeight(),
  ]);
  $this->assertCount(1, $elements, 'theme_image_formatter() correctly renders without title, alt, or path options.');
  // Link the image to a fragment on the page, and not a full URL.
  $fragment = $this->randomMachineName();
  $element = $base_element;
  $element['#url'] = Url::fromRoute('<none>', [], [
    'fragment' => $fragment,
  ]);
  $this->setRawContent($renderer->renderRoot($element));
  $elements = $this->xpath('//a[@href=:fragment]/img[@src=:url and @width=:width and @height=:height and @alt=""]', [
    ':fragment' => '#' . $fragment,
    ':url' => $url,
    ':width' => $image->getWidth(),
    ':height' => $image->getHeight(),
  ]);
  $this->assertCount(1, $elements, 'theme_image_formatter() correctly renders a link fragment.');
}