JSTests/test262/test/built-ins/Array/prototype/slice/S15.4.4.10_A1.4_T2.js

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

/*---
info: |
    If start is negative, use max(start + length, 0).
    If end is negative, use max(end + length, 0)
esid: sec-array.prototype.slice
description: -length < start < end < 0
---*/

var x = [0, 1, 2, 3, 4];
var arr = x.slice(-3, -1);

//CHECK#1
arr.getClass = Object.prototype.toString;
if (arr.getClass() !== "[object " + "Array" + "]") {
  $ERROR('#1: var x = [0,1,2,3,4]; var arr = x.slice(-3,-1); arr is Array object. Actual: ' + (arr.getClass()));
}

//CHECK#2
if (arr.length !== 2) {
  $ERROR('#2: var x = [0,1,2,3,4]; var arr = x.slice(-3,-1); arr.length === 2. Actual: ' + (arr.length));
}

//CHECK#3
if (arr[0] !== 2) {
  $ERROR('#3: var x = [0,1,2,3,4]; var arr = x.slice(-3,-1); arr[0] === 2. Actual: ' + (arr[0]));
}

//CHECK#4
if (arr[1] !== 3) {
  $ERROR('#4: var x = [0,1,2,3,4]; var arr = x.slice(-3,-1); arr[1] === 3. Actual: ' + (arr[1]));
}

//CHECK#5
if (arr[2] !== undefined) {
  $ERROR('#5: var x = [0,1,2,3,4]; var arr = x.slice(-3,-1); arr[2] === undefined. Actual: ' + (arr[2]));
}