LinkFieldWidgetTest.php

<?php

declare (strict_types=1);
namespace Drupal\Tests\link\Kernel;

use Drupal\entity_test\Entity\EntityTest;
use Drupal\field\Entity\FieldConfig;
use Drupal\link\LinkItemInterface;
use Drupal\field\Entity\FieldStorageConfig;
use Drupal\Tests\field\Kernel\FieldKernelTestBase;

/**
 * Tests link field widgets.
 *
 * @group link
 */
class LinkFieldWidgetTest extends FieldKernelTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'link',
    ];
    
    /**
     * Tests '#link_type' property exists on 'link_default' widget.
     *
     * Make sure the 'link_default' widget exposes a '#link_type' property on
     * its element. Modules can use it to understand if a text form element is
     * a link and also which LinkItemInterface::LINK_* is (EXTERNAL, GENERIC,
     * INTERNAL).
     */
    public function testLinkTypeOnLinkWidget() : void {
        $link_type = LinkItemInterface::LINK_EXTERNAL;
        $field_name = $this->randomMachineName();
        // Create a field with settings to validate.
        $fieldStorage = FieldStorageConfig::create([
            'field_name' => $field_name,
            'entity_type' => 'entity_test',
            'type' => 'link',
            'cardinality' => 1,
        ]);
        $fieldStorage->save();
        FieldConfig::create([
            'field_storage' => $fieldStorage,
            'label' => 'Read more about this entity',
            'bundle' => 'entity_test',
            'settings' => [
                'title' => DRUPAL_OPTIONAL,
                'link_type' => $link_type,
            ],
        ])->save();
        \Drupal::service('entity_display.repository')->getFormDisplay('entity_test', 'entity_test')
            ->setComponent($field_name, [
            'type' => 'link_default',
        ])
            ->save();
        $form = \Drupal::service('entity.form_builder')->getForm(EntityTest::create());
        $this->assertEquals($link_type, $form[$field_name]['widget'][0]['uri']['#link_type']);
    }

}