The Tor Browser: js/src/tests/supporting/sta.js@6474c204b198 (annotated)

js/src/tests/supporting/sta.js@6474c204b198 (annotated)

js/src/tests/supporting/sta.js

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /// Copyright (c) 2012 Ecma International.  All rights reserved.
 /// Ecma International makes this code available under the terms and conditions set
 /// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the
 /// "Use Terms").   Any redistribution of this code must retain the above
 /// copyright and this notice and otherwise comply with the Use Terms.
 //-----------------------------------------------------------------------------
 function compareArray(aExpected, aActual) {
     if (aActual.length != aExpected.length) {
         return false;
     }
     aExpected.sort();
     aActual.sort();
     var s;
     for (var i = 0; i < aExpected.length; i++) {
         if (aActual[i] !== aExpected[i]) {
             return false;
         }
     }
     return true;
 }
 //-----------------------------------------------------------------------------
 function arrayContains(arr, expected) {
     var found;
     for (var i = 0; i < expected.length; i++) {
         found = false;
         for (var j = 0; j < arr.length; j++) {
             if (expected[i] === arr[j]) {
                 found = true;
                 break;
             }
         }
         if (!found) {
             return false;
         }
     }
     return true;
 }
 //-----------------------------------------------------------------------------
 var supportsArrayIndexGettersOnArrays = undefined;
 function fnSupportsArrayIndexGettersOnArrays() {
     if (typeof supportsArrayIndexGettersOnArrays !== "undefined") {
         return supportsArrayIndexGettersOnArrays;
     }
     supportsArrayIndexGettersOnArrays = false;
     if (fnExists(Object.defineProperty)) {
         var arr = [];
         Object.defineProperty(arr, "0", {
             get: function() {
                 supportsArrayIndexGettersOnArrays = true;
                 return 0;
             }
         });
         var res = arr[0];
     }
     return supportsArrayIndexGettersOnArrays;
 }
 //-----------------------------------------------------------------------------
 var supportsArrayIndexGettersOnObjects = undefined;
 function fnSupportsArrayIndexGettersOnObjects() {
     if (typeof supportsArrayIndexGettersOnObjects !== "undefined")
         return supportsArrayIndexGettersOnObjects;
     supportsArrayIndexGettersOnObjects = false;
     if (fnExists(Object.defineProperty)) {
         var obj = {};
         Object.defineProperty(obj, "0", {
             get: function() {
                 supportsArrayIndexGettersOnObjects = true;
                 return 0;
             }
         });
         var res = obj[0];
     }
     return supportsArrayIndexGettersOnObjects;
 }
 //-----------------------------------------------------------------------------
 function ConvertToFileUrl(pathStr) {
     return "file:" + pathStr.replace(/\\/g, "/");
 }
 //-----------------------------------------------------------------------------
 function fnExists(/*arguments*/) {
     for (var i = 0; i < arguments.length; i++) {
         if (typeof (arguments[i]) !== "function") return false;
     }
     return true;
 }
 //-----------------------------------------------------------------------------
 var __globalObject = Function("return this;")();
 function fnGlobalObject() {
      return __globalObject;
 }
 //-----------------------------------------------------------------------------
 function fnSupportsStrict() {
     "use strict";
     try {
         eval('with ({}) {}');
         return false;
     } catch (e) {
         return true;
     }
 }
 //-----------------------------------------------------------------------------
 //Verify all attributes specified data property of given object:
 //value, writable, enumerable, configurable
 //If all attribute values are expected, return true, otherwise, return false
 function dataPropertyAttributesAreCorrect(obj,
                                           name,
                                           value,
                                           writable,
                                           enumerable,
                                           configurable) {
     var attributesCorrect = true;
     if (obj[name] !== value) {
         if (typeof obj[name] === "number" &&
             isNaN(obj[name]) &&
             typeof value === "number" &&
             isNaN(value)) {
             // keep empty
         } else {
             attributesCorrect = false;
         }
     }
     try {
         if (obj[name] === "oldValue") {
             obj[name] = "newValue";
         } else {
             obj[name] = "OldValue";
         }
     } catch (we) {
     }
     var overwrited = false;
     if (obj[name] !== value) {
         if (typeof obj[name] === "number" &&
             isNaN(obj[name]) &&
             typeof value === "number" &&
             isNaN(value)) {
             // keep empty
         } else {
             overwrited = true;
         }
     }
     if (overwrited !== writable) {
         attributesCorrect = false;
     }
     var enumerated = false;
     for (var prop in obj) {
         if (obj.hasOwnProperty(prop) && prop === name) {
             enumerated = true;
         }
     }
     if (enumerated !== enumerable) {
         attributesCorrect = false;
     }
     var deleted = false;
     try {
         delete obj[name];
     } catch (de) {
     }
     if (!obj.hasOwnProperty(name)) {
         deleted = true;
     }
     if (deleted !== configurable) {
         attributesCorrect = false;
     }
     return attributesCorrect;
 }
 //-----------------------------------------------------------------------------
 //Verify all attributes specified accessor property of given object:
 //get, set, enumerable, configurable
 //If all attribute values are expected, return true, otherwise, return false
 function accessorPropertyAttributesAreCorrect(obj,
                                               name,
                                               get,
                                               set,
                                               setVerifyHelpProp,
                                               enumerable,
                                               configurable) {
     var attributesCorrect = true;
     if (get !== undefined) {
         if (obj[name] !== get()) {
             if (typeof obj[name] === "number" &&
                 isNaN(obj[name]) &&
                 typeof get() === "number" &&
                 isNaN(get())) {
                 // keep empty
             } else {
                 attributesCorrect = false;
             }
         }
     } else {
         if (obj[name] !== undefined) {
             attributesCorrect = false;
         }
     }
     try {
         var desc = Object.getOwnPropertyDescriptor(obj, name);
         if (typeof desc.set === "undefined") {
             if (typeof set !== "undefined") {
                 attributesCorrect = false;
             }
         } else {
             obj[name] = "toBeSetValue";
             if (obj[setVerifyHelpProp] !== "toBeSetValue") {
                 attributesCorrect = false;
             }
         }
     } catch (se) {
         throw se;
     }
     var enumerated = false;
     for (var prop in obj) {
         if (obj.hasOwnProperty(prop) && prop === name) {
             enumerated = true;
         }
     }
     if (enumerated !== enumerable) {
         attributesCorrect = false;
     }
     var deleted = false;
     try {
         delete obj[name];
     } catch (de) {
         throw de;
     }
     if (!obj.hasOwnProperty(name)) {
         deleted = true;
     }
     if (deleted !== configurable) {
         attributesCorrect = false;
     }
     return attributesCorrect;
 }
 //-----------------------------------------------------------------------------
 var NotEarlyErrorString = "NotEarlyError";
 var EarlyErrorRePat = "^((?!" + NotEarlyErrorString + ").)*$";
 var NotEarlyError = new Error(NotEarlyErrorString);
 //-----------------------------------------------------------------------------
 // Copyright 2009 the Sputnik authors.  All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 function Test262Error(message) {
     if (message) this.message = message;
 }
 Test262Error.prototype.toString = function () {
     return "Test262 Error: " + this.message;
 };
 function testFailed(message) {
     throw new Test262Error(message);
 }
 function testPrint(message) {
 }
 //adaptors for Test262 framework
 function $PRINT(message) {
 }
 function $INCLUDE(message) { }
 function $ERROR(message) {
     testFailed(message);
 }
 function $FAIL(message) {
     testFailed(message);
 }
 //Sputnik library definitions
 //Ultimately these should be namespaced some how and only made
 //available to tests that explicitly include them.
 //For now, we just define the globally
 //math_precision.js
 // Copyright 2009 the Sputnik authors.  All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 function getPrecision(num) {
     //TODO: Create a table of prec's,
     //      because using Math for testing Math isn't that correct.
     var log2num = Math.log(Math.abs(num)) / Math.LN2;
     var pernum = Math.ceil(log2num);
     return (2 * Math.pow(2, -52 + pernum));
     //return(0);
 }
 //math_isequal.js
 // Copyright 2009 the Sputnik authors.  All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 var prec;
 function isEqual(num1, num2) {
     if ((num1 === Infinity) && (num2 === Infinity)) {
         return (true);
     }
     if ((num1 === -Infinity) && (num2 === -Infinity)) {
         return (true);
     }
     prec = getPrecision(Math.min(Math.abs(num1), Math.abs(num2)));
     return (Math.abs(num1 - num2) <= prec);
     //return(num1 === num2);
 }
 //numeric_conversion.js
 // Copyright 2009 the Sputnik authors.  All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 function ToInteger(p) {
     var x = Number(p);
     if (isNaN(x)) {
         return +0;
     }
     if ((x === +0)
   || (x === -0)
   || (x === Number.POSITIVE_INFINITY)
   || (x === Number.NEGATIVE_INFINITY)) {
         return x;
     }
     var sign = (x < 0) ? -1 : 1;
     return (sign * Math.floor(Math.abs(x)));
 }
 //Date_constants.js
 // Copyright 2009 the Sputnik authors.  All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 var HoursPerDay = 24;
 var MinutesPerHour = 60;
 var SecondsPerMinute = 60;
 var msPerDay = 86400000;
 var msPerSecond = 1000;
 var msPerMinute = 60000;
 var msPerHour = 3600000;
 var date_1899_end = -2208988800001;
 var date_1900_start = -2208988800000;
 var date_1969_end = -1;
 var date_1970_start = 0;
 var date_1999_end = 946684799999;
 var date_2000_start = 946684800000;
 var date_2099_end = 4102444799999;
 var date_2100_start = 4102444800000;
 // Copyright 2009 the Sputnik authors.  All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 //the following values are normally generated by the sputnik.py driver
 var $LocalTZ,
     $DST_start_month,
     $DST_start_sunday,
     $DST_start_hour,
     $DST_start_minutes,
     $DST_end_month,
     $DST_end_sunday,
     $DST_end_hour,
     $DST_end_minutes;
 (function () {
     /**
       * Finds the first date, starting from |start|, where |predicate|
       * holds.
       */
     var findNearestDateBefore = function(start, predicate) {
         var current = start;
         var month = 1000 * 60 * 60 * 24 * 30;
         for (var step = month; step > 0; step = Math.floor(step / 3)) {
             if (!predicate(current)) {
                 while (!predicate(current))
                     current = new Date(current.getTime() + step);
                     current = new Date(current.getTime() - step);
                 }
         }
         while (!predicate(current)) {
             current = new Date(current.getTime() + 1);
         }
         return current;
     };
     var juneDate = new Date(2000, 5, 20, 0, 0, 0, 0);
     var decemberDate = new Date(2000, 11, 20, 0, 0, 0, 0);
     var juneOffset = juneDate.getTimezoneOffset();
     var decemberOffset = decemberDate.getTimezoneOffset();
     var isSouthernHemisphere = (juneOffset > decemberOffset);
     var winterTime = isSouthernHemisphere ? juneDate : decemberDate;
     var summerTime = isSouthernHemisphere ? decemberDate : juneDate;
     var dstStart = findNearestDateBefore(winterTime, function (date) {
         return date.getTimezoneOffset() == summerTime.getTimezoneOffset();
     });
     $DST_start_month = dstStart.getMonth();
     $DST_start_sunday = dstStart.getDate() > 15 ? '"last"' : '"first"';
     $DST_start_hour = dstStart.getHours();
     $DST_start_minutes = dstStart.getMinutes();
     var dstEnd = findNearestDateBefore(summerTime, function (date) {
         return date.getTimezoneOffset() == winterTime.getTimezoneOffset();
     });
     $DST_end_month = dstEnd.getMonth();
     $DST_end_sunday = dstEnd.getDate() > 15 ? '"last"' : '"first"';
     $DST_end_hour = dstEnd.getHours();
     $DST_end_minutes = dstEnd.getMinutes();
     return;
 })();
 //Date.library.js
 // Copyright 2009 the Sputnik authors.  All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 //15.9.1.2 Day Number and Time within Day
 function Day(t) {
   return Math.floor(t/msPerDay);
 }
 function TimeWithinDay(t) {
   return t%msPerDay;
 }
 //15.9.1.3 Year Number
 function DaysInYear(y){
   if(y%4 != 0) return 365;
   if(y%4 == 0 && y%100 != 0) return 366;
   if(y%100 == 0 && y%400 != 0) return 365;
   if(y%400 == 0) return 366;
 }
 function DayFromYear(y) {
   return (365*(y-1970)
           + Math.floor((y-1969)/4)
           - Math.floor((y-1901)/100)
           + Math.floor((y-1601)/400));
 }
 function TimeFromYear(y){
   return msPerDay*DayFromYear(y);
 }
 function YearFromTime(t) {
   t = Number(t);
   var sign = ( t < 0 ) ? -1 : 1;
   var year = ( sign < 0 ) ? 1969 : 1970;
   for(var time = 0;;year += sign){
     time = TimeFromYear(year);
     if(sign > 0 && time > t){
       year -= sign;
       break;
     }
     else if(sign < 0 && time <= t){
       break;
     }
   };
   return year;
 }
 function InLeapYear(t){
   if(DaysInYear(YearFromTime(t)) == 365)
     return 0;
   if(DaysInYear(YearFromTime(t)) == 366)
     return 1;
 }
 function DayWithinYear(t) {
   return Day(t)-DayFromYear(YearFromTime(t));
 }
 //15.9.1.4 Month Number
 function MonthFromTime(t){
   var day = DayWithinYear(t);
   var leap = InLeapYear(t);
   if((0 <= day) && (day < 31)) return 0;
   if((31 <= day) && (day < (59+leap))) return 1;
   if(((59+leap) <= day) && (day < (90+leap))) return 2;
   if(((90+leap) <= day) && (day < (120+leap))) return 3;
   if(((120+leap) <= day) && (day < (151+leap))) return 4;
   if(((151+leap) <= day) && (day < (181+leap))) return 5;
   if(((181+leap) <= day) && (day < (212+leap))) return 6;
   if(((212+leap) <= day) && (day < (243+leap))) return 7;
   if(((243+leap) <= day) && (day < (273+leap))) return 8;
   if(((273+leap) <= day) && (day < (304+leap))) return 9;
   if(((304+leap) <= day) && (day < (334+leap))) return 10;
   if(((334+leap) <= day) && (day < (365+leap))) return 11;
 }
 //15.9.1.5 Date Number
 function DateFromTime(t) {
   var day = DayWithinYear(t);
   var month = MonthFromTime(t);
   var leap = InLeapYear(t);
   if(month == 0) return day+1;
   if(month == 1) return day-30;
   if(month == 2) return day-58-leap;
   if(month == 3) return day-89-leap;
   if(month == 4) return day-119-leap;
   if(month == 5) return day-150-leap;
   if(month == 6) return day-180-leap;
   if(month == 7) return day-211-leap;
   if(month == 8) return day-242-leap;
   if(month == 9) return day-272-leap;
   if(month == 10) return day-303-leap;
   if(month == 11) return day-333-leap;
 }
 //15.9.1.6 Week Day
 function WeekDay(t) {
   var weekday = (Day(t)+4)%7;
   return (weekday < 0 ? 7+weekday : weekday);
 }
 //15.9.1.9 Daylight Saving Time Adjustment
 $LocalTZ = (new Date()).getTimezoneOffset() / -60;
 if (DaylightSavingTA((new Date()).valueOf()) !== 0) {
    $LocalTZ -= 1;
 }
 var LocalTZA = $LocalTZ*msPerHour;
 function DaysInMonth(m, leap) {
   m = m%12;
   //April, June, Sept, Nov
   if(m == 3 || m == 5 || m == 8 || m == 10 ) {
     return 30;
   }
   //Jan, March, May, July, Aug, Oct, Dec
   if(m == 0 || m == 2 || m == 4 || m == 6 || m == 7 || m == 9 || m == 11){
     return 31;
   }
   //Feb
   return 28+leap;
 }
 function GetSundayInMonth(t, m, count){
     var year = YearFromTime(t);
     var tempDate;
     if (count==='"first"') {
         for (var d=1; d <= DaysInMonth(m, InLeapYear(t)); d++) {
             tempDate = new Date(year, m, d);
             if (tempDate.getDay()===0) {
                 return tempDate.valueOf();
             }
         }
     } else if(count==='"last"') {
         for (var d=DaysInMonth(m, InLeapYear(t)); d>0; d--) {
             tempDate = new Date(year, m, d);
             if (tempDate.getDay()===0) {
                 return tempDate.valueOf();
             }
         }
     }
     throw new Error("Unsupported 'count' arg:" + count);
 }
 /*
 function GetSundayInMonth(t, m, count){
   var year = YearFromTime(t);
   var leap = InLeapYear(t);
   var day = 0;
   if(m >= 1) day += DaysInMonth(0, leap);
   if(m >= 2) day += DaysInMonth(1, leap);
   if(m >= 3) day += DaysInMonth(2, leap);
   if(m >= 4) day += DaysInMonth(3, leap);
   if(m >= 5) day += DaysInMonth(4, leap);
   if(m >= 6) day += DaysInMonth(5, leap);
   if(m >= 7) day += DaysInMonth(6, leap);
   if(m >= 8) day += DaysInMonth(7, leap);
   if(m >= 9) day += DaysInMonth(8, leap);
   if(m >= 10) day += DaysInMonth(9, leap);
   if(m >= 11) day += DaysInMonth(10, leap);
   var month_start = TimeFromYear(year)+day*msPerDay;
   var sunday = 0;
   if(count === "last"){
     for(var last_sunday = month_start+DaysInMonth(m, leap)*msPerDay;
       WeekDay(last_sunday)>0;
       last_sunday -= msPerDay
     ){};
     sunday = last_sunday;
   }
   else {
     for(var first_sunday = month_start;
       WeekDay(first_sunday)>0;
       first_sunday += msPerDay
     ){};
     sunday = first_sunday+7*msPerDay*(count-1);
   }
   return sunday;
 }*/
 function DaylightSavingTA(t) {
 //  t = t-LocalTZA;
   var DST_start = GetSundayInMonth(t, $DST_start_month, $DST_start_sunday) +
                   $DST_start_hour*msPerHour +
                   $DST_start_minutes*msPerMinute;
   var k = new Date(DST_start);
   var DST_end   = GetSundayInMonth(t, $DST_end_month, $DST_end_sunday) +
                   $DST_end_hour*msPerHour +
                   $DST_end_minutes*msPerMinute;
   if ( t >= DST_start && t < DST_end ) {
     return msPerHour;
   } else {
     return 0;
   }
 }
 //15.9.1.9 Local Time
 function LocalTime(t){
   return t+LocalTZA+DaylightSavingTA(t);
 }
 function UTC(t) {
   return t-LocalTZA-DaylightSavingTA(t-LocalTZA);
 }
 //15.9.1.10 Hours, Minutes, Second, and Milliseconds
 function HourFromTime(t){
   return Math.floor(t/msPerHour)%HoursPerDay;
 }
 function MinFromTime(t){
   return Math.floor(t/msPerMinute)%MinutesPerHour;
 }
 function SecFromTime(t){
   return Math.floor(t/msPerSecond)%SecondsPerMinute;
 }
 function msFromTime(t){
   return t%msPerSecond;
 }
 //15.9.1.11 MakeTime (hour, min, sec, ms)
 function MakeTime(hour, min, sec, ms){
   if ( !isFinite(hour) || !isFinite(min) || !isFinite(sec) || !isFinite(ms)) {
     return Number.NaN;
   }
   hour = ToInteger(hour);
   min  = ToInteger(min);
   sec  = ToInteger(sec);
   ms   = ToInteger(ms);
   return ((hour*msPerHour) + (min*msPerMinute) + (sec*msPerSecond) + ms);
 }
 //15.9.1.12 MakeDay (year, month, date)
 function MakeDay(year, month, date) {
   if ( !isFinite(year) || !isFinite(month) || !isFinite(date)) {
     return Number.NaN;
   }
   year = ToInteger(year);
   month = ToInteger(month);
   date = ToInteger(date );
   var result5 = year + Math.floor(month/12);
   var result6 = month%12;
   var sign = ( year < 1970 ) ? -1 : 1;
   var t =    ( year < 1970 ) ? 1 :  0;
   var y =    ( year < 1970 ) ? 1969 : 1970;
   if( sign == -1 ){
     for ( y = 1969; y >= year; y += sign ) {
       t += sign * DaysInYear(y)*msPerDay;
     }
   } else {
     for ( y = 1970 ; y < year; y += sign ) {
       t += sign * DaysInYear(y)*msPerDay;
     }
   }
   var leap = 0;
   for ( var m = 0; m < month; m++ ) {
     //if year is changed, than we need to recalculate leep
     leap = InLeapYear(t);
     t += DaysInMonth(m, leap)*msPerDay;
   }
   if ( YearFromTime(t) != result5 ) {
     return Number.NaN;
   }
   if ( MonthFromTime(t) != result6 ) {
     return Number.NaN;
   }
   if ( DateFromTime(t) != 1 ) {
     return Number.NaN;
   }
   return Day(t)+date-1;
 }
 //15.9.1.13 MakeDate (day, time)
 function MakeDate( day, time ) {
   if(!isFinite(day) || !isFinite(time)) {
     return Number.NaN;
   }
   return day*msPerDay+time;
 }
 //15.9.1.14 TimeClip (time)
 function TimeClip(time) {
   if(!isFinite(time) || Math.abs(time) > 8.64e15){
     return Number.NaN;
   }
   return ToInteger(time);
 }
 //Test Functions
 //ConstructDate is considered deprecated, and should not be used directly from
 //test262 tests as it's incredibly sensitive to DST start/end dates that
 //vary with geographic location.
 function ConstructDate(year, month, date, hours, minutes, seconds, ms){
   /*
    * 1. Call ToNumber(year)
    * 2. Call ToNumber(month)
    * 3. If date is supplied use ToNumber(date); else use 1
    * 4. If hours is supplied use ToNumber(hours); else use 0
    * 5. If minutes is supplied use ToNumber(minutes); else use 0
    * 6. If seconds is supplied use ToNumber(seconds); else use 0
    * 7. If ms is supplied use ToNumber(ms); else use 0
    * 8. If Result(1) is not NaN and 0 <= ToInteger(Result(1)) <= 99, Result(8) is
    * 1900+ToInteger(Result(1)); otherwise, Result(8) is Result(1)
    * 9. Compute MakeDay(Result(8), Result(2), Result(3))
    * 10. Compute MakeTime(Result(4), Result(5), Result(6), Result(7))
    * 11. Compute MakeDate(Result(9), Result(10))
    * 12. Set the [[Value]] property of the newly constructed object to TimeClip(UTC(Result(11)))
    */
   var r1 = Number(year);
   var r2 = Number(month);
   var r3 = ((date && arguments.length > 2) ? Number(date) : 1);
   var r4 = ((hours && arguments.length > 3) ? Number(hours) : 0);
   var r5 = ((minutes && arguments.length > 4) ? Number(minutes) : 0);
   var r6 = ((seconds && arguments.length > 5) ? Number(seconds) : 0);
   var r7 = ((ms && arguments.length > 6) ? Number(ms) : 0);
   var r8 = r1;
   if(!isNaN(r1) && (0 <= ToInteger(r1)) && (ToInteger(r1) <= 99))
     r8 = 1900+r1;
   var r9 = MakeDay(r8, r2, r3);
   var r10 = MakeTime(r4, r5, r6, r7);
   var r11 = MakeDate(r9, r10);
   var retVal = TimeClip(UTC(r11));
   return retVal;
 }
 /**** Python code for initialize the above constants
 // We may want to replicate the following in JavaScript.
 // However, using JS date operations to generate parameters that are then used to
 // test those some date operations seems unsound.  However, it isn't clear if there
 //is a good interoperable alternative.
 # Copyright 2009 the Sputnik authors.  All rights reserved.
 # This code is governed by the BSD license found in the LICENSE file.
 def GetDaylightSavingsTimes():
 # Is the given floating-point time in DST?
 def IsDst(t):
 return time.localtime(t)[-1]
 # Binary search to find an interval between the two times no greater than
 # delta where DST switches, returning the midpoint.
 def FindBetween(start, end, delta):
 while end - start > delta:
 middle = (end + start) / 2
 if IsDst(middle) == IsDst(start):
 start = middle
 else:
 end = middle
 return (start + end) / 2
 now = time.time()
 one_month = (30 * 24 * 60 * 60)
 # First find a date with different daylight savings.  To avoid corner cases
 # we try four months before and after today.
 after = now + 4 * one_month
 before = now - 4 * one_month
 if IsDst(now) == IsDst(before) and IsDst(now) == IsDst(after):
 logger.warning("Was unable to determine DST info.")
 return None
 # Determine when the change occurs between now and the date we just found
 # in a different DST.
 if IsDst(now) != IsDst(before):
 first = FindBetween(before, now, 1)
 else:
 first = FindBetween(now, after, 1)
 # Determine when the change occurs between three and nine months from the
 # first.
 second = FindBetween(first + 3 * one_month, first + 9 * one_month, 1)
 # Find out which switch is into and which if out of DST
 if IsDst(first - 1) and not IsDst(first + 1):
 start = second
 end = first
 else:
 start = first
 end = second
 return (start, end)
 def GetDaylightSavingsAttribs():
 times = GetDaylightSavingsTimes()
 if not times:
 return None
 (start, end) = times
 def DstMonth(t):
 return time.localtime(t)[1] - 1
 def DstHour(t):
 return time.localtime(t - 1)[3] + 1
 def DstSunday(t):
 if time.localtime(t)[2] > 15:
 return "'last'"
 else:
 return "'first'"
 def DstMinutes(t):
 return (time.localtime(t - 1)[4] + 1) % 60
 attribs = { }
 attribs['start_month'] = DstMonth(start)
 attribs['end_month'] = DstMonth(end)
 attribs['start_sunday'] = DstSunday(start)
 attribs['end_sunday'] = DstSunday(end)
 attribs['start_hour'] = DstHour(start)
 attribs['end_hour'] = DstHour(end)
 attribs['start_minutes'] = DstMinutes(start)
 attribs['end_minutes'] = DstMinutes(end)
 return attribs
 *********/
 //--Test case registration-----------------------------------------------------
 function runTestCase(testcase) {
     if (testcase() !== true) {
         $ERROR("Test case returned non-true value!");
     }
 }