JSTests/test262/test/language/expressions/multiplication/S11.5.1_A3_T1.4.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)
es5id: 11.5.1_A3_T1.4
description: Type(x) and Type(y) vary between Null and Undefined
---*/

//CHECK#1
if (isNaN(null * undefined) !== true) {
  $ERROR('#1: null * undefined === Not-a-Number. Actual: ' + (null * undefined));
}

//CHECK#2
if (isNaN(undefined * null) !== true) {
  $ERROR('#2: undefined * null === Not-a-Number. Actual: ' + (undefined * null));
}

//CHECK#3
if (isNaN(undefined * undefined) !== true) {
  $ERROR('#3: undefined * undefined === Not-a-Number. Actual: ' + (undefined * undefined));
}

//CHECK#4
if (null * null !== 0) {
  $ERROR('#4: null * null === 0. Actual: ' + (null * null));
}