/* -*- 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