/**
* Tests the cache tags from image formatters.
*/
function testImageFormatterCacheTags()
{
// Create a test entity with the image field set.
$entity = EntityTest::create(['name' => $this->randomMachineName()]);
$entity->{$this->fieldName}->generateSampleItems(2);
$entity->save();
// Generate the render array to verify if the cache tags are as expected.
$build = $this->display->build($entity);
$this->assertEquals($entity->{$this->fieldName}[0]->entity->getCacheTags(), $build[$this->fieldName][0]['#cache']['tags'], 'First image cache tags is as expected');
$this->assertEquals($entity->{$this->fieldName}[1]->entity->getCacheTags(), $build[$this->fieldName][1]['#cache']['tags'], 'Second image cache tags is as expected');
}
/**
* Renders fields of a given entity with a given display.
*
* @param \Drupal\Core\Entity\FieldableEntityInterface $entity
* The entity object with attached fields to render.
* @param \Drupal\Core\Entity\Display\EntityViewDisplayInterface $display
* The display to render the fields in.
*
* @return string
* The rendered entity fields.
*/
protected function renderEntityFields(FieldableEntityInterface $entity, EntityViewDisplayInterface $display)
{
$content = $display->build($entity);
$content = $this->render($content);
return $content;
}
