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 one expression is undefined or null and another is not, return false
michael@0:  *
michael@0:  * @path ch11/11.9/11.9.2/S11.9.2_A6.2_T2.js
michael@0:  * @description y is null or undefined, x is not
michael@0:  */
michael@0: 
michael@0: //CHECK#1
michael@0: if ((false != undefined) !== true) {
michael@0:   $ERROR('#1: (false != undefined) === true');
michael@0: }
michael@0: 
michael@0: //CHECK#2
michael@0: if ((Number.NaN != undefined) !== true) {
michael@0:   $ERROR('#2: (Number.NaN != undefined) === true');
michael@0: }
michael@0: 
michael@0: //CHECK#3
michael@0: if (("undefined" != undefined) !== true) {
michael@0:   $ERROR('#3: ("undefined" != undefined) === true');
michael@0: }
michael@0: 
michael@0: //CHECK#4
michael@0: if (({} != undefined) !== true) {
michael@0:   $ERROR('#4: ({} != undefined) === true');
michael@0: }
michael@0: 
michael@0: //CHECK#5
michael@0: if ((false != null) !== true) {
michael@0:   $ERROR('#5: (false != null) === true');
michael@0: }
michael@0: 
michael@0: //CHECK#6
michael@0: if ((0 != null) !== true) {
michael@0:   $ERROR('#6: (0 != null) === true');
michael@0: }
michael@0: 
michael@0: //CHECK#7
michael@0: if (("null" != null) !== true) {
michael@0:   $ERROR('#7: ("null" != null) === true');
michael@0: }
michael@0: 
michael@0: //CHECK#8
michael@0: if (({} != null) !== true) {
michael@0:   $ERROR('#8: ({} != null) === true');
michael@0: }
michael@0: