tests/mozilla/ecma_3/Date/15.9.5.3.js

   1 /* The contents of this file are subject to the Netscape Public
   2  * License Version 1.1 (the "License"); you may not use this file
   3  * except in compliance with the License. You may obtain a copy of
   4  * the License at http://www.mozilla.org/NPL/
   5  *
   6  * Software distributed under the License is distributed on an "AS
   7  * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
   8  * implied. See the License for the specific language governing
   9  * rights and limitations under the License.
  10  *
  11  * The Original Code is Mozilla Communicator client code, released March
  12  * 31, 1998.
  13  *
  14  * The Initial Developer of the Original Code is Netscape Communications
  15  * Corporation. Portions created by Netscape are
  16  * Copyright (C) 1998 Netscape Communications Corporation. All
  17  * Rights Reserved.
  18  *
  19  * Contributor(s):
  20  *
  21  */
  22 /**
  23     File Name:          15.9.5.3.js
  24     ECMA Section: 15.9.5.3 Date.prototype.toDateString()
  25     Description:
  26     This function returns a string value. The contents of the string are
  27     implementation dependent, but are intended to represent the "date"
  28     portion of the Date in the current time zone in a convenient,
  29     human-readable form.   We can't test the content of the string,
  30     but can verify that the string is parsable by Date.parse
  31
  32     The toDateString function is not generic; it generates a runtime error
  33     if its 'this' value is not a Date object. Therefore it cannot be transferred
  34     to other kinds of objects for use as a method.
  35
  36     Author:  pschwartau@netscape.com
  37     Date:      14 november 2000  (adapted from ecma/Date/15.9.5.2.js)
  38 */
  39
  40    var SECTION = "15.9.5.3";
  41    var VERSION = "ECMA_3";
  42    var TITLE   = "Date.prototype.toDateString()";
  43
  44    var status = '';
  45    var actual = '';
  46    var expect = '';
  47
  48
  49    startTest();
  50    writeHeaderToLog( SECTION + " "+ TITLE);
  51
  52
  53 //-----------------------------------------------------------------------------------------------------
  54    var testcases = new Array();
  55 //-----------------------------------------------------------------------------------------------------
  56
  57
  58    // first, some generic tests -
  59
  60    status = "typeof (now.toDateString())";
  61    actual =   typeof (now.toDateString());
  62    expect = "string";
  63    addTestCase();
  64
  65    status = "Date.prototype.toDateString.length";
  66    actual =  Date.prototype.toDateString.length;
  67    expect =  0;
  68    addTestCase();
  69
  70    /* Date.parse is accurate to the second;  valueOf() to the millisecond.
  71         Here we expect them to coincide, as we expect a time of exactly midnight -  */
  72    status = "(Date.parse(now.toDateString()) - (midnight(now)).valueOf()) == 0";
  73    actual =   (Date.parse(now.toDateString()) - (midnight(now)).valueOf()) == 0;
  74    expect = true;
  75    addTestCase();
  76
  77
  78
  79    // 1970
  80    addDateTestCase(0);
  81    addDateTestCase(TZ_ADJUST);
  82
  83
  84    // 1900
  85    addDateTestCase(TIME_1900);
  86    addDateTestCase(TIME_1900 - TZ_ADJUST);
  87
  88
  89    // 2000
  90    addDateTestCase(TIME_2000);
  91    addDateTestCase(TIME_2000 - TZ_ADJUST);
  92
  93
  94    // 29 Feb 2000
  95    addDateTestCase(UTC_29_FEB_2000);
  96    addDateTestCase(UTC_29_FEB_2000 - 1000);
  97    addDateTestCase(UTC_29_FEB_2000 - TZ_ADJUST);
  98
  99
 100    // 2005
 101    addDateTestCase(UTC_1_JAN_2005);
 102    addDateTestCase(UTC_1_JAN_2005 - 1000);
 103    addDateTestCase(UTC_1_JAN_2005 - TZ_ADJUST);
 104
 105
 106
 107 //-----------------------------------------------------------------------------------------------------
 108    test();
 109 //-----------------------------------------------------------------------------------------------------
 110
 111
 112 function addTestCase()
 113 {
 114   testcases[tc++] = new TestCase( SECTION, status, expect, actual);
 115 }
 116
 117
 118 function addDateTestCase(date_given_in_milliseconds)
 119 {
 120   var givenDate = new Date(date_given_in_milliseconds);
 121
 122   status = 'Date.parse('   +   givenDate   +   ').toDateString())';
 123   actual =  Date.parse(givenDate.toDateString());
 124   expect = Date.parse(midnight(givenDate));
 125   addTestCase();
 126 }
 127
 128
 129 function midnight(givenDate)
 130 {
 131   // midnight on the given date -
 132   return new Date(givenDate.getFullYear(), givenDate.getMonth(), givenDate.getDate());
 133 }
 134
 135
 136 function test()
 137 {
 138   for ( tc=0; tc < testcases.length; tc++ )
 139   {
 140     testcases[tc].passed = writeTestCaseResult(
 141                                                testcases[tc].expect,
 142                                                testcases[tc].actual,
 143                                                testcases[tc].description  +  " = "  +  testcases[tc].actual );
 144
 145     testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value ";
 146   }
 147   stopTest();
 148   return (testcases);
 149 }