| /* -*- 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() |
| { |
| enterFunc('test'); |
| printBugNumber(BUGNUMBER); |
| printStatus(summary); |
| |
| for (var i=0; i<UBound; i++) |
| { |
| reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]); |
| } |
| |
| exitFunc ('test'); |
| } |