RollbackFieldTest.php

<?php

namespace Drupal\Tests\field\Kernel\Migrate\d7;

use Drupal\field\Entity\FieldStorageConfig;
use Drupal\migrate\MigrateExecutable;

/**
 * Migrates and rolls back Drupal 7 fields.
 *
 * @group field
 */
class RollbackFieldTest extends MigrateFieldTest {
    
    /**
     * Tests migrating D7 fields to field_storage_config entities, then rolling back.
     */
    public function testFields() {
        // Test that the fields have migrated (prior to rollback).
        parent::testFields();
        $this->executeRollback('d7_field');
        // Check that fields have been rolled back.
        $rolled_back_field_ids = [
            'comment.field_integer',
            'node.taxonomy_forums',
            'node.field_integer',
            'node.field_tags',
            'node.field_term_reference',
            'node.field_text_list',
            'node.field_text',
            'node.field_phone',
            'node.field_file',
            'node.field_images',
            'node.field_image',
            'node.field_long_text',
            'node.field_date_with_end_time',
            'node.field_integer_list',
            'node.field_date',
            'node.field_link',
            'node.field_float',
            'node.field_boolean',
            'node.field_email',
            'user.field_file',
        ];
        foreach ($rolled_back_field_ids as $field_id) {
            $this->assertNull(FieldStorageConfig::load($field_id));
        }
        // Check that fields that should persist have not been rolled back.
        $non_rolled_back_field_ids = [
            'node.body',
            'comment.comment_body',
        ];
        foreach ($non_rolled_back_field_ids as $field_id) {
            $this->assertNotNull(FieldStorageConfig::load($field_id));
        }
    }
    
    /**
     * Executes a single rollback.
     *
     * @param string|\Drupal\migrate\Plugin\MigrationInterface $migration
     *   The migration to rollback, or its ID.
     */
    protected function executeRollback($migration) {
        if (is_string($migration)) {
            $this->migration = $this->getMigration($migration);
        }
        else {
            $this->migration = $migration;
        }
        (new MigrateExecutable($this->migration, $this))
            ->rollback();
    }

}