class MigrateConfigRollbackTest

class MigrateConfigRollbackTest extends MigrateTestBase {
    
    /**
     * Modules to enable.
     *
     * @var array
     */
    protected static $modules = [
        'system',
        'language',
        'config_translation',
    ];
    
    /**
     * Tests rolling back configuration.
     */
    public function testConfigRollback() {
        // Use system.site configuration to demonstrate importing and rolling back
        // configuration.
        $variable = [
            [
                'id' => 'site_name',
                'site_name' => 'Some site',
                'site_slogan' => 'Awesome slogan',
            ],
        ];
        $ids = [
            'id' => [
                'type' => 'string',
            ],
        ];
        $definition = [
            'id' => 'config',
            'migration_tags' => [
                'Import and rollback test',
            ],
            'source' => [
                'plugin' => 'embedded_data',
                'data_rows' => $variable,
                'ids' => $ids,
            ],
            'process' => [
                'name' => 'site_name',
                'slogan' => 'site_slogan',
            ],
            'destination' => [
                'plugin' => 'config',
                'config_name' => 'system.site',
            ],
        ];
        
        /** @var \Drupal\migrate\Plugin\Migration $config_migration */
        $config_migration = \Drupal::service('plugin.manager.migration')->createStubMigration($definition);
        $config_id_map = $config_migration->getIdMap();
        // Rollback is not enabled for configuration translations.
        $this->assertFalse($config_migration->getDestinationPlugin()
            ->supportsRollback());
        // Import and validate config entities were created.
        $config_executable = new MigrateExecutable($config_migration, $this);
        $config_executable->import();
        $config = $this->config('system.site');
        $this->assertSame('Some site', $config->get('name'));
        $this->assertSame('Awesome slogan', $config->get('slogan'));
        $map_row = $config_id_map->getRowBySource([
            'id' => $variable[0]['id'],
        ]);
        $this->assertNotNull($map_row['destid1']);
        // Rollback and verify the configuration changes are still there.
        $config_executable->rollback();
        $config = $this->config('system.site');
        $this->assertSame('Some site', $config->get('name'));
        $this->assertSame('Awesome slogan', $config->get('slogan'));
        // Confirm the map row is deleted.
        $this->assertFalse($config_id_map->getRowBySource([
            'id' => $variable[0]['id'],
        ]));
        // We use system configuration to demonstrate importing and rolling back
        // configuration translations.
        $i18n_variable = [
            [
                'id' => 'site_name',
                'language' => 'fr',
                'site_name' => 'fr - Some site',
                'site_slogan' => 'fr - Awesome slogan',
            ],
            [
                'id' => 'site_name',
                'language' => 'is',
                'site_name' => 'is - Some site',
                'site_slogan' => 'is - Awesome slogan',
            ],
        ];
        $ids = [
            'id' => [
                'type' => 'string',
            ],
            'language' => [
                'type' => 'string',
            ],
        ];
        $definition = [
            'id' => 'i18n_config',
            'migration_tags' => [
                'Import and rollback test',
            ],
            'source' => [
                'plugin' => 'embedded_data',
                'data_rows' => $i18n_variable,
                'ids' => $ids,
            ],
            'process' => [
                'langcode' => 'language',
                'name' => 'site_name',
                'slogan' => 'site_slogan',
            ],
            'destination' => [
                'plugin' => 'config',
                'config_name' => 'system.site',
                'translations' => 'true',
            ],
        ];
        $config_migration = \Drupal::service('plugin.manager.migration')->createStubMigration($definition);
        $config_id_map = $config_migration->getIdMap();
        // Rollback is enabled for configuration translations.
        $this->assertTrue($config_migration->getDestinationPlugin()
            ->supportsRollback());
        // Import and validate config entities were created.
        $config_executable = new MigrateExecutable($config_migration, $this);
        $config_executable->import();
        $language_manager = \Drupal::service('language_manager');
        foreach ($i18n_variable as $row) {
            $langcode = $row['language'];
            
            /** @var \Drupal\language\Config\LanguageConfigOverride $config_translation */
            $config_translation = $language_manager->getLanguageConfigOverride($langcode, 'system.site');
            $this->assertSame($row['site_name'], $config_translation->get('name'));
            $this->assertSame($row['site_slogan'], $config_translation->get('slogan'));
            $map_row = $config_id_map->getRowBySource([
                'id' => $row['id'],
                'language' => $row['language'],
            ]);
            $this->assertNotNull($map_row['destid1']);
        }
        // Rollback and verify the translation have been removed.
        $config_executable->rollback();
        foreach ($i18n_variable as $row) {
            $langcode = $row['language'];
            $config_translation = $language_manager->getLanguageConfigOverride($langcode, 'system.site');
            $this->assertNull($config_translation->get('name'));
            $this->assertNull($config_translation->get('slogan'));
            // Confirm the map row is deleted.
            $map_row = $config_id_map->getRowBySource([
                'id' => $row['id'],
                'language' => $langcode,
            ]);
            $this->assertFalse($map_row);
        }
        // Test that the configuration is still present.
        $config = $this->config('system.site');
        $this->assertSame('Some site', $config->get('name'));
        $this->assertSame('Awesome slogan', $config->get('slogan'));
    }

}