test262/test/built-ins/Array/S15.4.5.2_A3_T1.js

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

/*---
info: |
    If the length property is changed, every property whose name
    is an array index whose value is not smaller than the new length is automatically deleted
es5id: 15.4.5.2_A3_T1
description: >
    If new length greater than the name of every property whose name
    is an array index
---*/

//CHECK#1
var x = [];
x.length = 1;
if (x.length !== 1) {
  $ERROR('#1: x = []; x.length = 1; x.length === 1. Actual: ' + (x.length));
}

//CHECK#2
x[5] = 1;
x.length = 10;
if (x.length !== 10) {
  $ERROR('#2: x = []; x.length = 1; x[5] = 1; x.length = 10; x.length === 10. Actual: ' + (x.length));
}

//CHECK#3
if (x[5] !== 1) {
  $ERROR('#3: x = []; x.length = 1; x[5] = 1; x.length = 10; x[5] = 1');
}