JSTests/test262/test/language/expressions/less-than-or-equal/S11.8.3_A3.1_T1.3.js

// Copyright 2009 the Sputnik authors.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
info: |
    Operator x <= y returns ToNumber(x) <= ToNumber(y), if Type(Primitive(x))
    is not String or Type(Primitive(y)) is not String
es5id: 11.8.3_A3.1_T1.3
description: >
    Type(Primitive(x)) and Type(Primitive(y)) vary between Null and
    Undefined
---*/

//CHECK#1
if (null <= undefined !== false) {
  $ERROR('#1: null <= undefined === false');
}

//CHECK#2
if (undefined <= null !== false) {
  $ERROR('#2: undefined <= null === false');
}

//CHECK#3
if (undefined <= undefined !== false) {
  $ERROR('#3: undefined <= undefined === false');
}

//CHECK#4
if (null <= null !== true) {
  $ERROR('#4: null <= null === true');
}