function main() {
	var list;
	var out;
	var dir;
	var key;
	var j;
	var i;

	out = {};
	for ( i = 0; i < DIRS.length; i++ ) {
		key = DIRS[ i ][ 1 ];
		dir = join( __dirname, DIRS[ i ][ 0 ] );
		list = readDir( dir );
		for ( j = 0; j < list.length; j++ ) {
			// Assemble absolute file paths:
			list[ j ] = join( dir, list[ j ] );
		}
		out[ key ] = list;
	}
	return out;
}
Returns an object containing fixtures file lists.

@private
@returns {Object} object containing fixtures file lists