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Rhino is an open-source implementation of JavaScript written entirely in Java. It is typically embedded into Java applications to provide scripting to end users.
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/* -*- 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/. */

/**
   File Name:    15.9.5.4.js
   ECMA Section: 15.9.5.4 Date.prototype.toTimeString()
   Description:
   This function returns a string value. The contents of the string are
   implementation dependent, but are intended to represent the "time"
   portion of the Date in the current time zone in a convenient,
   human-readable form.   We test the content of the string by checking
   that d.toDateString()  +  d.toTimeString()  ==  d.toString()

   Author:  [email protected]                            
   Date:    14 november 2000
   Revised: 07 january 2002  because of a change in JS Date format:

   See http://bugzilla.mozilla.org/show_bug.cgi?id=118266 (SpiderMonkey)
   See http://bugzilla.mozilla.org/show_bug.cgi?id=118636 (Rhino)
*/
//-----------------------------------------------------------------------------
var gTestfile = '15.9.5.4.js';
var SECTION = "15.9.5.4";
var VERSION = "ECMA_3"; 
var TITLE   = "Date.prototype.toTimeString()";
  
var status = '';
var actual = ''; 
var expect = '';
var givenDate;
var year = '';
var regexp = '';
var reducedDateString = '';
var hopeThisIsTimeString = '';
var cnEmptyString = '';
var cnERR ='OOPS! FATAL ERROR: no regexp match in extractTimeString()';

startTest();
writeHeaderToLog( SECTION + " "+ TITLE);

// first, a couple of generic tests -

status = "typeof (now.toTimeString())"; 
actual =   typeof (now.toTimeString());
expect = "string";
addTestCase();

status = "Date.prototype.toTimeString.length";  
actual =  Date.prototype.toTimeString.length;
expect =  0;  
addTestCase();

// 1970
addDateTestCase(0);
addDateTestCase(TZ_ADJUST);
  

// 1900
addDateTestCase(TIME_1900);
addDateTestCase(TIME_1900 - TZ_ADJUST);


// 2000
addDateTestCase(TIME_2000);
addDateTestCase(TIME_2000 - TZ_ADJUST);

   
// 29 Feb 2000
addDateTestCase(UTC_29_FEB_2000);
addDateTestCase(UTC_29_FEB_2000 - 1000);
addDateTestCase(UTC_29_FEB_2000 - TZ_ADJUST);


// Now
addDateTestCase( TIME_NOW);
addDateTestCase( TIME_NOW - TZ_ADJUST);


// 2005
addDateTestCase(UTC_1_JAN_2005);
addDateTestCase(UTC_1_JAN_2005 - 1000);
addDateTestCase(UTC_1_JAN_2005 - TZ_ADJUST);

//-----------------------------------------------------------------------------------------------------
test();
//-----------------------------------------------------------------------------------------------------

function addTestCase()
{
  new TestCase(
    SECTION,
    status,
    expect,
    actual);
}

function addDateTestCase(date_given_in_milliseconds)
{
  givenDate = new Date(date_given_in_milliseconds);
  
  status = '('  +  givenDate  +  ').toTimeString()';  
  actual = givenDate.toTimeString();
  expect = extractTimeString(givenDate);
  addTestCase();
}


/*
 * As of 2002-01-07, the format for JavaScript dates changed.
 * See http://bugzilla.mozilla.org/show_bug.cgi?id=118266 (SpiderMonkey)
 * See http://bugzilla.mozilla.org/show_bug.cgi?id=118636 (Rhino)
 *
 * WAS: Mon Jan 07 13:40:34 GMT-0800 (Pacific Standard Time) 2002
 * NOW: Mon Jan 07 2002 13:40:34 GMT-0800 (Pacific Standard Time)
 *
 * Thus, use a regexp of the form /date.toDateString()(.*)$/
 * to capture the TimeString into the first backreference -
 */
function extractTimeString(date)
{
  regexp = new RegExp(date.toDateString() + '(.*)' + '$');

  try
  {
    hopeThisIsTimeString = date.toString().match(regexp)[1];
  }
  catch(e)
  {
    return cnERR;
  }

  // trim any leading or trailing spaces -
  return trimL(trimR(hopeThisIsTimeString));
}


function trimL(s)
{
  if (!s) {return cnEmptyString;};
  for (var i = 0; i!=s.length; i++) {if (s[i] != ' ') {break;}}
  return s.substring(i);
}


function trimR(s)
{
  if (!s) {return cnEmptyString;};
  for (var i = (s.length - 1); i!=-1; i--) {if (s[i] != ' ') {break;}}
  return s.substring(0, i+1);
}