michael@0: // |reftest| random -- bogus perf test (bug 467263)
michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
michael@0: 
michael@0: /*
michael@0:  * Date: 27 September 2001
michael@0:  *
michael@0:  * SUMMARY: Performance: truncating even very large arrays should be fast!
michael@0:  * See http://bugzilla.mozilla.org/show_bug.cgi?id=101964
michael@0:  *
michael@0:  * Adjust this testcase if necessary. The FAST constant defines
michael@0:  * an upper bound in milliseconds for any truncation to take.
michael@0:  */
michael@0: //-----------------------------------------------------------------------------
michael@0: var UBound = 0;
michael@0: var BUGNUMBER = 101964;
michael@0: var summary = 'Performance: truncating even very large arrays should be fast!';
michael@0: var BIG = 10000000;
michael@0: var LITTLE = 10;
michael@0: var FAST = 50; // array truncation should be 50 ms or less to pass the test
michael@0: var MSG_FAST = 'Truncation took less than ' + FAST + ' ms';
michael@0: var MSG_SLOW = 'Truncation took ';
michael@0: var MSG_MS = ' ms';
michael@0: var status = '';
michael@0: var statusitems = [];
michael@0: var actual = '';
michael@0: var actualvalues = [];
michael@0: var expect= '';
michael@0: var expectedvalues = [];
michael@0: 
michael@0: 
michael@0: 
michael@0: status = inSection(1);
michael@0: var arr = Array(BIG);
michael@0: var start = new Date();
michael@0: arr.length = LITTLE;
michael@0: actual = elapsedTime(start);
michael@0: expect = FAST;
michael@0: addThis();
michael@0: 
michael@0: 
michael@0: 
michael@0: //-----------------------------------------------------------------------------
michael@0: test();
michael@0: //-----------------------------------------------------------------------------
michael@0: 
michael@0: 
michael@0: 
michael@0: function elapsedTime(startTime)
michael@0: {
michael@0:   return new Date() - startTime;
michael@0: }
michael@0: 
michael@0: 
michael@0: function addThis()
michael@0: {
michael@0:   statusitems[UBound] = status;
michael@0:   actualvalues[UBound] = isThisFast(actual);
michael@0:   expectedvalues[UBound] = isThisFast(expect);
michael@0:   UBound++;
michael@0: }
michael@0: 
michael@0: 
michael@0: function isThisFast(ms)
michael@0: {
michael@0:   if (ms <= FAST)
michael@0:     return MSG_FAST;
michael@0:   return MSG_SLOW + ms + MSG_MS;
michael@0: }
michael@0: 
michael@0: 
michael@0: function test()
michael@0: {
michael@0:   enterFunc ('test');
michael@0:   printBugNumber(BUGNUMBER);
michael@0:   printStatus (summary);
michael@0: 
michael@0:   for (var i=0; i<UBound; i++)
michael@0:   {
michael@0:     reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
michael@0:   }
michael@0: 
michael@0:   exitFunc ('test');
michael@0: }