SectionDataTest.php

<?php

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

use Drupal\Core\TypedData\DataDefinition;
use Drupal\Core\TypedData\TypedDataManagerInterface;
use Drupal\KernelTests\KernelTestBase;
use Drupal\layout_builder\Section;

/**
 * @coversDefaultClass \Drupal\layout_builder\Plugin\DataType\SectionData
 *
 * @group layout_builder
 */
class SectionDataTest extends KernelTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'layout_builder',
  ];
  
  /**
   * @covers ::setValue
   */
  public function testSetArrayValue() : void {
    $definition = DataDefinition::create('layout_section');
    $data = $this->container
      ->get(TypedDataManagerInterface::class)
      ->create($definition, name: 'test_section');
    // If an array is passed, it's converted to a Section object.
    $data->setValue([]);
    $this->assertInstanceOf(Section::class, $data->getValue());
    // Anything else should raise an exception.
    $this->expectExceptionMessage('Value assigned to "test_section" is not a valid section');
    $data->setValue('[]');
  }

}