TestExecutableFinder.php

<?php

declare (strict_types=1);
namespace Drupal\package_manager_test_validation;

use Drupal\Core\State\StateInterface;
use Drupal\package_manager\TranslatableStringAdapter;
use PhpTuf\ComposerStager\API\Exception\LogicException;
use PhpTuf\ComposerStager\API\Finder\Service\ExecutableFinderInterface;

/**
 * A test-only executable finder that can be rigged to throw an exception.
 */
final class TestExecutableFinder implements ExecutableFinderInterface {
  public function __construct(private readonly ExecutableFinderInterface $decorated, private readonly StateInterface $state) {
  }
  
  /**
   * Sets up an exception to throw when trying to find a specific executable.
   *
   * @param string $name
   *   The name of an executable to look for.
   */
  public static function throwFor(string $name) : void {
    \Drupal::state()->set("throw for {$name}", TRUE);
  }
  
  /**
   * {@inheritdoc}
   */
  public function find(string $name) : string {
    if ($this->state
      ->get("throw for {$name}")) {
      $message = new TranslatableStringAdapter("{$name} is not a thing");
      throw new LogicException($message);
    }
    return $this->decorated
      ->find($name);
  }

}