RollbackTest.php

<?php

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

use Drupal\Core\Config\Checkpoint\Checkpoint;
use Drupal\Core\Datetime\Entity\DateFormat;
use Drupal\Core\Recipe\Recipe;
use Drupal\FunctionalTests\Core\Recipe\RecipeTestTrait;
use Drupal\Tests\BrowserTestBase;

/**
 * @group Recipe
 */
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));
    }

}