JSTests/test262/test/language/expressions/compound-assignment/S11.13.2_A4.2_T2.3.js

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

/*---
info: The production x /= y is the same as x = x / y
es5id: 11.13.2_A4.2_T2.3
description: >
    Type(x) is different from Type(y) and both types vary between
    Number (primitive or object) and Null
---*/

var x;

//CHECK#1
x = 1;
x /= null;
if (x !== Number.POSITIVE_INFINITY) {
  throw new Test262Error('#1: x = 1; x /= null; x === +Infinity. Actual: ' + (x));
}

//CHECK#2
x = null;
x /= 1;
if (x !== 0) {
  throw new Test262Error('#2: x = null; x /= 1; x === 0. Actual: ' + (x));
}

//CHECK#3
x = new Number(1);
x /= null;
if (x !== Number.POSITIVE_INFINITY) {
  throw new Test262Error('#3: x = new Number(1); x /= null; x === +Infinity. Actual: ' + (x));
}

//CHECK#4
x = null;
x /= new Number(1);
if (x !== 0) {
  throw new Test262Error('#4: x = null; x /= new Number(1); x === 0. Actual: ' + (x));
}