gecko-dev/js/tests/ecma/Date/15.9.5.5.js

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/**
   File Name:          15.9.5.5.js
   ECMA Section:       15.9.5.5
   Description:        Date.prototype.getYear

   This function is specified here for backwards compatibility only. The
   function getFullYear is much to be preferred for nearly all purposes,
   because it avoids the "year 2000 problem."

   1.  Let t be this time value.
   2.  If t is NaN, return NaN.
   3.  Return YearFromTime(LocalTime(t)) 1900.

   Author:             christine@netscape.com
   Date:               12 november 1997
*/

var SECTION = "15.9.5.5";
var VERSION = "ECMA_1";
startTest();
var TITLE   = "Date.prototype.getYear()";

writeHeaderToLog( SECTION + " "+ TITLE);

var TZ_ADJUST = TZ_DIFF * msPerHour;

// get the current time
var now = (new Date()).valueOf();

// calculate time for year 0
for ( var time = 0, year = 1969; year >= 0; year-- ) {
  time -= TimeInYear(year);
}
// get time for 29 feb 2000

var UTC_FEB_29_2000 = TIME_2000 + 31*msPerDay + 28*msPerHour;

addTestCase( now );
addTestCase( time );
addTestCase( TIME_1970 );
addTestCase( TIME_1900 );
addTestCase( TIME_2000 );
addTestCase( UTC_FEB_29_2000 );

new TestCase( SECTION,
	      "(new Date(NaN)).getYear()",
	      NaN,
	      (new Date(NaN)).getYear() );

new TestCase( SECTION,
	      "Date.prototype.getYear.length",
	      0,
	      Date.prototype.getYear.length );

test();

function addTestCase( t ) {
  new TestCase( SECTION,
		"(new Date("+t+")).getYear()",
		GetYear(YearFromTime(LocalTime(t))),
		(new Date(t)).getYear() );

  new TestCase( SECTION,
		"(new Date("+(t+1)+")).getYear()",
		GetYear(YearFromTime(LocalTime(t+1))),
		(new Date(t+1)).getYear() );

  new TestCase( SECTION,
		"(new Date("+(t-1)+")).getYear()",
		GetYear(YearFromTime(LocalTime(t-1))),
		(new Date(t-1)).getYear() );

  new TestCase( SECTION,
		"(new Date("+(t-TZ_ADJUST)+")).getYear()",
		GetYear(YearFromTime(LocalTime(t-TZ_ADJUST))),
		(new Date(t-TZ_ADJUST)).getYear() );

  new TestCase( SECTION,
		"(new Date("+(t+TZ_ADJUST)+")).getYear()",
		GetYear(YearFromTime(LocalTime(t+TZ_ADJUST))),
		(new Date(t+TZ_ADJUST)).getYear() );
}
function GetYear( year ) {
/*
  if ( year >= 1900 && year < 2000 ) {
  return year - 1900;
  } else {
  return year;
  }
*/
  return year - 1900;
}