code: function( path, callback ) {
  		var match = munit.isRegExp( render.options.file_match ) ? render.options.file_match : rtestfile;
  
  		path += '/';
  		fs.readdir( path, function( e, files ) {
  			if ( e ) {
  				return callback( e );
  			}
  
  			async.each( files || [],
  				function( file, callback ) {
  					var fullpath = path + file;
  
  					fs.stat( fullpath, function( e, stat ) {
  						if ( e ) {
  							callback( e );
  						}
  						else if ( stat.isDirectory() ) {
  							render._renderPath( fullpath, callback );
  						}
  						else {
  							if ( stat.isFile() && match.exec( file ) ) {
  								munit.require( fullpath );
  							}
  
  							callback();
  						}
  					});
  				},
  				callback
  			);
  		});
  	}
docs: Loads up each possible test file