jquery-ui/tests/unit/spinner/spinner_test_helpers.js

define( function() {

return {
	simulateKeyDownUp: function( element, keyCode, shift ) {
		element
			.simulate( "keydown", { keyCode: keyCode, shiftKey: shift || false } )
			.simulate( "keyup", { keyCode: keyCode, shiftKey: shift || false } );
	}
};

} );