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/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
*
* Date: 06 November 2002
* SUMMARY: arr.sort() should not output |undefined| when |arr| is empty
* See http://bugzilla.mozilla.org/show_bug.cgi?id=178722
*
* ECMA-262 Ed.3: 15.4.4.11 Array.prototype.sort (comparefn)
*
* 1. Call the [[Get]] method of this object with argument "length".
* 2. Call ToUint32(Result(1)).
* 3. Perform an implementation-dependent sequence of calls to the [[Get]],
* [[Put]], and [[Delete]] methods of this object, etc. etc.
* 4. Return this object.
*
*
* Note that sort() is done in-place on |arr|. In other words, sort() is a
* "destructive" method rather than a "functional" method. The return value
* of |arr.sort()| and |arr| are the same object.
*
* If |arr| is an empty array, the return value of |arr.sort()| should be
* an empty array, not the value |undefined| as was occurring in bug 178722.
*
*/
//-----------------------------------------------------------------------------
var UBound = 0;
var BUGNUMBER = 178722;
var summary = 'arr.sort() should not output |undefined| when |arr| is empty';
var status = '';
var statusitems = [];
var actual = '';
var actualvalues = [];
var expect= '';
var expectedvalues = [];
var arr;
// create empty array or pseudo-array objects in various ways
var arr1 = Array();
var arr2 = new Array();
var arr3 = [];
var arr4 = [1];
arr4.pop();
status = inSection(1);
arr = arr1.sort();
actual = arr instanceof Array && arr.length === 0 && arr === arr1;
expect = true;
addThis();
status = inSection(2);
arr = arr2.sort();
actual = arr instanceof Array && arr.length === 0 && arr === arr2;
expect = true;
addThis();
status = inSection(3);
arr = arr3.sort();
actual = arr instanceof Array && arr.length === 0 && arr === arr3;
expect = true;
addThis();
status = inSection(4);
arr = arr4.sort();
actual = arr instanceof Array && arr.length === 0 && arr === arr4;
expect = true;
addThis();
// now do the same thing, with non-default sorting:
function g() {return 1;}
status = inSection('1a');
arr = arr1.sort(g);
actual = arr instanceof Array && arr.length === 0 && arr === arr1;
expect = true;
addThis();
status = inSection('2a');
arr = arr2.sort(g);
actual = arr instanceof Array && arr.length === 0 && arr === arr2;
expect = true;
addThis();
status = inSection('3a');
arr = arr3.sort(g);
actual = arr instanceof Array && arr.length === 0 && arr === arr3;
expect = true;
addThis();
status = inSection('4a');
arr = arr4.sort(g);
actual = arr instanceof Array && arr.length === 0 && arr === arr4;
expect = true;
addThis();
//-----------------------------------------------------------------------------
test();
//-----------------------------------------------------------------------------
function addThis()
{
statusitems[UBound] = status;
actualvalues[UBound] = actual;
expectedvalues[UBound] = expect;
UBound++;
}
function test()
{
printBugNumber(BUGNUMBER);
printStatus(summary);
for (var i=0; i<UBound; i++)
{
reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
}
}
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