class RollbackTest

class RollbackTest extends BrowserTestBase {
  use RecipeTestTrait;
  
  /**
   * {@inheritdoc}
   *
   * Disable strict config schema because this test explicitly makes the
   * recipe system save invalid config, to prove that it validates it after
   * the fact and raises an error.
   */
  protected $strictConfigSchema = FALSE;
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'system',
    'user',
  ];
  
  /**
   * @testWith ["invalid_config", "core.date_format.invalid"]
   *           ["recipe_depend_on_invalid", "core.date_format.invalid"]
   *           ["recipe_depend_on_invalid_config_and_valid_modules", "core.date_format.invalid"]
   */
  public function testRollbackForInvalidConfig(string $recipe_fixture, string $expected_invalid_config_name) : void {
    $expected_core_extension_modules = $this->config('core.extension')
      ->get('module');
    /** @var string $recipe_fixture */
    $recipe_fixture = realpath(__DIR__ . "/../../../../fixtures/recipes/{$recipe_fixture}");
    $process = $this->applyRecipe($recipe_fixture, 1);
    $this->assertStringContainsString("There were validation errors in {$expected_invalid_config_name}:", $process->getErrorOutput());
    $this->assertCheckpointsExist([
      "Backup before the '" . Recipe::createFromDirectory($recipe_fixture)->name . "' recipe.",
    ]);
    // @see invalid_config
    $date_formats = DateFormat::loadMultiple([
      'valid',
      'invalid',
    ]);
    $this->assertEmpty($date_formats, "The recipe's imported config was not rolled back.");
    // @see recipe_depend_on_invalid_config_and_valid_module
    $this->assertSame($expected_core_extension_modules, $this->config('core.extension')
      ->get('module'));
  }
  
  /**
   * Asserts that the current set of checkpoints matches the given labels.
   *
   * @param string[] $expected_labels
   *   The labels of every checkpoint that is expected to exist currently, in
   *   the expected order.
   */
  private function assertCheckpointsExist(array $expected_labels) : void {
    $checkpoints = \Drupal::service('config.checkpoints');
    $labels = array_map(fn(Checkpoint $c) => $c->label, iterator_to_array($checkpoints));
    $this->assertSame($expected_labels, array_values($labels));
  }

}