ExtensionNameConstraintTest.php

<?php

declare (strict_types=1);
namespace Drupal\KernelTests\Core\Extension;

use Drupal\Core\Extension\Plugin\Validation\Constraint\ExtensionNameConstraint;
use Drupal\Core\TypedData\DataDefinition;
use Drupal\KernelTests\KernelTestBase;
use PHPUnit\Framework\Attributes\CoversClass;
use PHPUnit\Framework\Attributes\Group;
use PHPUnit\Framework\Attributes\RunTestsInSeparateProcesses;

/**
 * Tests the ExtensionName constraint.
 */
class ExtensionNameConstraintTest extends KernelTestBase {
  
  /**
   * Tests the ExtensionName constraint.
   */
  public function testValidation() : void {
    // Create a data definition that specifies the value must be a string with
    // the name of a valid extension.
    $definition = DataDefinition::create('string')->addConstraint('ExtensionName');
    /** @var \Drupal\Core\TypedData\TypedDataManagerInterface $typed_data */
    $typed_data = $this->container
      ->get('typed_data_manager');
    $data = $typed_data->create($definition, 'user');
    $this->assertCount(0, $data->validate());
    $data->setValue('invalid-name');
    $violations = $data->validate();
    $this->assertCount(1, $violations);
    $this->assertSame('This value is not a valid extension name.', (string) $violations->get(0)
      ->getMessage());
  }

}