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 - y returns ToNumber(x) - ToNumber(y)
michael@0:  *
michael@0:  * @path ch11/11.6/11.6.2/S11.6.2_A3_T2.4.js
michael@0:  * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Undefined
michael@0:  */
michael@0: 
michael@0: //CHECK#1
michael@0: if (isNaN(1 - undefined) !== true) {
michael@0:   $ERROR('#1: 1 - undefined === Not-a-Number. Actual: ' + (1 - undefined));
michael@0: }
michael@0: 
michael@0: //CHECK#2
michael@0: if (isNaN(undefined - 1) !== true) {
michael@0:   $ERROR('#2: undefined - 1 === Not-a-Number. Actual: ' + (undefined - 1));
michael@0: }
michael@0: 
michael@0: //CHECK#3
michael@0: if (isNaN(new Number(1) - undefined) !== true) {
michael@0:   $ERROR('#3: new Number(1) - undefined === Not-a-Number. Actual: ' + (new Number(1) - undefined));
michael@0: }
michael@0: 
michael@0: //CHECK#4
michael@0: if (isNaN(undefined - new Number(1)) !== true) {
michael@0:   $ERROR('#4: undefined - new Number(1) === Not-a-Number. Actual: ' + (undefined - new Number(1)));
michael@0: }
michael@0: