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 // |reftest| random -- bogus perf test (bug 467263)

 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 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: 27 September 2001

  *

  * SUMMARY: Performance: truncating even very large arrays should be fast!

  * See http://bugzilla.mozilla.org/show_bug.cgi?id=101964

  *

  * Adjust this testcase if necessary. The FAST constant defines

  * an upper bound in milliseconds for any truncation to take.

  */

 //-----------------------------------------------------------------------------

 var UBound = 0;

 var BUGNUMBER = 101964;

 var summary = 'Performance: truncating even very large arrays should be fast!';

 var BIG = 10000000;

 var LITTLE = 10;

 var FAST = 50; // array truncation should be 50 ms or less to pass the test

 var MSG_FAST = 'Truncation took less than ' + FAST + ' ms';

 var MSG_SLOW = 'Truncation took ';

 var MSG_MS = ' ms';

 var status = '';

 var statusitems = [];

 var actual = '';

 var actualvalues = [];

 var expect= '';

 var expectedvalues = [];

 status = inSection(1);

 var arr = Array(BIG);

 var start = new Date();

 arr.length = LITTLE;

 actual = elapsedTime(start);

 expect = FAST;

 addThis();

 //-----------------------------------------------------------------------------

 test();

 //-----------------------------------------------------------------------------

 function elapsedTime(startTime)

 {

   return new Date() - startTime;

 }

 function addThis()

 {

   statusitems[UBound] = status;

   actualvalues[UBound] = isThisFast(actual);

   expectedvalues[UBound] = isThisFast(expect);

   UBound++;

 }

 function isThisFast(ms)

 {

   if (ms <= FAST)

     return MSG_FAST;

   return MSG_SLOW + ms + MSG_MS;

 }

 function test()

 {

   enterFunc ('test');

   printBugNumber(BUGNUMBER);

   printStatus (summary);

   for (var i=0; i<UBound; i++)

   {

     reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);

   }

   exitFunc ('test');

 }