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(x) as well as Type(y) is Undefined or Null, return true
michael@0:  *
michael@0:  * @path ch11/11.9/11.9.2/S11.9.2_A6.1.js
michael@0:  * @description Checking all combinations
michael@0:  */
michael@0: 
michael@0: //CHECK#1
michael@0: if ((undefined != undefined) !== false) {
michael@0:   $ERROR('#1: (undefined != undefined) === false');
michael@0: }
michael@0: 
michael@0: //CHECK#2
michael@0: if ((void 0 != undefined) !== false) {
michael@0:   $ERROR('#2: (void 0 != undefined) === false');
michael@0: }
michael@0: 
michael@0: //CHECK#3
michael@0: if ((undefined != eval("var x")) !== false) {
michael@0:   $ERROR('#3: (undefined != eval("var x")) === false');
michael@0: }
michael@0: 
michael@0: //CHECK#4
michael@0: if ((undefined != null) !== false) {
michael@0:   $ERROR('#4: (undefined != null) === false');
michael@0: }
michael@0: 
michael@0: //CHECK#5
michael@0: if ((null != void 0) !== false) {
michael@0:   $ERROR('#5: (null != void 0) === false');
michael@0: }
michael@0: 
michael@0: //CHECK#6
michael@0: if ((null != null) !== false) {
michael@0:   $ERROR('#6: (null != null) === false');
michael@0: }
michael@0: