michael@0: // Copyright 2009 the Sputnik authors.  All rights reserved.
michael@0: // This code is governed by the BSD license found in the LICENSE file.
michael@0: 
michael@0: /**
michael@0:  * Operator ++x returns x = ToNumber(x) + 1
michael@0:  *
michael@0:  * @path ch11/11.4/11.4.4/S11.4.4_A3_T4.js
michael@0:  * @description Type(x) is undefined or null
michael@0:  */
michael@0: 
michael@0: //CHECK#1
michael@0: var x; 
michael@0: ++x; 
michael@0: if (isNaN(x) !== true) {
michael@0:   $ERROR('#1: var x; ++x; x === Not-a-Number. Actual: ' + (x));
michael@0: }
michael@0: 
michael@0: //CHECK#2
michael@0: var x = null; 
michael@0: ++x;
michael@0: if (x !== 1) {
michael@0:   $ERROR('#2: var x = null; ++x; x === 1. Actual: ' + (x));
michael@0: }
michael@0: