trait FileSystemModuleDiscoveryDataProviderTrait

trait FileSystemModuleDiscoveryDataProviderTrait {
    
    /**
     * A data provider that lists every module in core.
     *
     * @return array
     *   An array of module names to test.
     */
    public static function coreModuleListDataProvider() : array {
        $prefix = dirname(__DIR__, 3) . DIRECTORY_SEPARATOR . 'modules';
        $module_dirs = array_keys(iterator_to_array(new \FilesystemIterator($prefix)));
        $module_names = array_map(function ($path) use ($prefix) {
            return str_replace($prefix . DIRECTORY_SEPARATOR, '', $path);
        }, $module_dirs);
        $modules_keyed = array_combine($module_names, $module_names);
        $data = array_map(function ($module) {
            return [
                $module,
            ];
        }, $modules_keyed);
        return $data;
    }

}