DbLogFormInjectionTest.php

<?php

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

use Drupal\Core\DependencyInjection\DependencySerializationTrait;
use Drupal\Core\Form\FormInterface;
use Drupal\Core\Form\FormState;
use Drupal\Core\Form\FormStateInterface;
use Drupal\KernelTests\KernelTestBase;
use Drupal\user\Entity\User;

/**
 * Tests serializing a form with an injected dblog logger instance.
 *
 * @group dblog
 */
class DbLogFormInjectionTest extends KernelTestBase implements FormInterface {
    use DependencySerializationTrait;
    
    /**
     * A Dblog logger instance.
     *
     * @var \Psr\Log\LoggerInterface
     */
    protected $logger;
    
    /**
     * Modules to enable.
     *
     * @var array
     */
    protected static $modules = [
        'system',
        'dblog',
        'user',
    ];
    
    /**
     * {@inheritdoc}
     */
    public function getFormId() {
        return 'dblog_test_injection_form';
    }
    
    /**
     * Process callback.
     *
     * @param array $element
     *   Form element
     *
     * @return array
     *   Processed element.
     */
    public function process($element) {
        return $element;
    }
    
    /**
     * {@inheritdoc}
     */
    public function buildForm(array $form, FormStateInterface $form_state) {
        $form['#process'][] = [
            $this,
            'process',
        ];
        return $form;
    }
    
    /**
     * {@inheritdoc}
     */
    public function validateForm(array &$form, FormStateInterface $form_state) {
    }
    
    /**
     * {@inheritdoc}
     */
    public function submitForm(array &$form, FormStateInterface $form_state) {
        $form_state->setRebuild();
    }
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->installSchema('dblog', [
            'watchdog',
        ]);
        $this->installEntitySchema('user');
        $this->logger = \Drupal::logger('test_logger');
        $test_user = User::create([
            'name' => 'foobar',
            'mail' => 'foobar@example.com',
        ]);
        $test_user->save();
        \Drupal::service('current_user')->setAccount($test_user);
    }
    
    /**
     * Tests db log injection serialization.
     */
    public function testLoggerSerialization() : void {
        $form_state = new FormState();
        // Forms are only serialized during POST requests.
        $form_state->setRequestMethod('POST');
        $form_state->setCached();
        $form_builder = $this->container
            ->get('form_builder');
        $form_id = $form_builder->getFormId($this, $form_state);
        $form = $form_builder->retrieveForm($form_id, $form_state);
        $form_builder->prepareForm($form_id, $form, $form_state);
        $form_builder->processForm($form_id, $form, $form_state);
    }

}