tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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regress-178722.js (3286B)

      1 /* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
      2 /* This Source Code Form is subject to the terms of the Mozilla Public
      3 * License, v. 2.0. If a copy of the MPL was not distributed with this
      4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      5 
      6 /*
      7 *
      8 * Date:    06 November 2002
      9 * SUMMARY: arr.sort() should not output |undefined| when |arr| is empty
     10 * See http://bugzilla.mozilla.org/show_bug.cgi?id=178722
     11 *
     12 * ECMA-262 Ed.3: 15.4.4.11 Array.prototype.sort (comparefn)
     13 *
     14 * 1. Call the [[Get]] method of this object with argument "length".
     15 * 2. Call ToUint32(Result(1)).
     16 * 3. Perform an implementation-dependent sequence of calls to the [[Get]],
     17 *    [[Put]], and [[Delete]] methods of this object, etc. etc.
     18 * 4. Return this object.
     19 *
     20 *
     21 * Note that sort() is done in-place on |arr|. In other words, sort() is a
     22 * "destructive" method rather than a "functional" method. The return value
     23 * of |arr.sort()| and |arr| are the same object.
     24 *
     25 * If |arr| is an empty array, the return value of |arr.sort()| should be
     26 * an empty array, not the value |undefined| as was occurring in bug 178722.
     27 *
     28 */
     29 //-----------------------------------------------------------------------------
     30 var UBound = 0;
     31 var BUGNUMBER = 178722;
     32 var summary = 'arr.sort() should not output |undefined| when |arr| is empty';
     33 var status = '';
     34 var statusitems = [];
     35 var actual = '';
     36 var actualvalues = [];
     37 var expect= '';
     38 var expectedvalues = [];
     39 var arr;
     40 
     41 
     42 // create empty array or pseudo-array objects in various ways
     43 var arr1 = Array();
     44 var arr2 = new Array();
     45 var arr3 = [];
     46 var arr4 = [1];
     47 arr4.pop();
     48 
     49 
     50 status = inSection(1);
     51 arr = arr1.sort();
     52 actual = arr instanceof Array && arr.length === 0 && arr === arr1;
     53 expect = true;
     54 addThis();
     55 
     56 status = inSection(2);
     57 arr = arr2.sort();
     58 actual = arr instanceof Array && arr.length === 0 && arr === arr2;
     59 expect = true;
     60 addThis();
     61 
     62 status = inSection(3);
     63 arr = arr3.sort();
     64 actual = arr instanceof Array && arr.length === 0 && arr === arr3;
     65 expect = true;
     66 addThis();
     67 
     68 status = inSection(4);
     69 arr = arr4.sort();
     70 actual = arr instanceof Array && arr.length === 0 && arr === arr4;
     71 expect = true;
     72 addThis();
     73 
     74 // now do the same thing, with non-default sorting:
     75 function g() {return 1;}
     76 
     77 status = inSection('1a');
     78 arr = arr1.sort(g);
     79 actual = arr instanceof Array && arr.length === 0 && arr === arr1;
     80 expect = true;
     81 addThis();
     82 
     83 status = inSection('2a');
     84 arr = arr2.sort(g);
     85 actual = arr instanceof Array && arr.length === 0 && arr === arr2;
     86 expect = true;
     87 addThis();
     88 
     89 status = inSection('3a');
     90 arr = arr3.sort(g);
     91 actual = arr instanceof Array && arr.length === 0 && arr === arr3;
     92 expect = true;
     93 addThis();
     94 
     95 status = inSection('4a');
     96 arr = arr4.sort(g);
     97 actual = arr instanceof Array && arr.length === 0 && arr === arr4;
     98 expect = true;
     99 addThis();
    100 
    101 
    102 
    103 //-----------------------------------------------------------------------------
    104 test();
    105 //-----------------------------------------------------------------------------
    106 
    107 
    108 
    109 function addThis()
    110 {
    111  statusitems[UBound] = status;
    112  actualvalues[UBound] = actual;
    113  expectedvalues[UBound] = expect;
    114  UBound++;
    115 }
    116 
    117 
    118 function test()
    119 {
    120  printBugNumber(BUGNUMBER);
    121  printStatus(summary);
    122 
    123  for (var i=0; i<UBound; i++)
    124  {
    125    reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
    126  }
    127 }