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:  * If Type(Primitive(x)) is not String and Type(Primitive(y)) is not String, then operator x + y returns ToNumber(x) + ToNumber(y)
michael@0:  *
michael@0:  * @path ch11/11.6/11.6.1/S11.6.1_A3.1_T1.3.js
michael@0:  * @description Type(Primitive(x)) and Type(Primitive(y)) vary between Null and Undefined
michael@0:  */
michael@0: 
michael@0: //CHECK#1
michael@0: if (isNaN(null + undefined) !== true) {
michael@0:   $ERROR('#1: null + undefined === Not-a-Number. Actual: ' + (null + undefined));
michael@0: }
michael@0: 
michael@0: //CHECK#2
michael@0: if (isNaN(undefined + null) !== true) {
michael@0:   $ERROR('#2: undefined + null === Not-a-Number. Actual: ' + (undefined + null));
michael@0: }
michael@0: 
michael@0: //CHECK#3
michael@0: if (isNaN(undefined + undefined) !== true) {
michael@0:   $ERROR('#3: undefined + undefined === Not-a-Number. Actual: ' + (undefined + undefined));
michael@0: }
michael@0: 
michael@0: //CHECK#4
michael@0: if (null + null !== 0) {
michael@0:   $ERROR('#4: null + null === 0. Actual: ' + (null + null));
michael@0: }
michael@0: