Make dates default to the local timezone if none specified

test/mjsunit/date.js

 // Copyright 2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 185 matching lines @@
 d.setTime(Math.pow(-2, 64));
 assertTrue(isNaN(d.getTime()));
 
 
 // Test creation with obscure date values.
 assertEquals(8640000000000000, Date.UTC(1970, 0, 1 + 100000001, -24));
 assertEquals(-8640000000000000, Date.UTC(1970, 0, 1 - 100000001, 24));
 
 
 // Parsing ES5 ISO-8601 dates.
-// When TZ is omitted, it defaults to 'Z' meaning UTC.
+// When TZ is omitted, it defaults to the local timezone
 
 // Check epoch.
 assertEquals(0, Date.parse("1970-01-01T00:00:00.000+00:00"));
 assertEquals(0, Date.parse("1970-01-01T00:00:00.000-00:00"));
 assertEquals(0, Date.parse("1970-01-01T00:00:00.000Z"));
-assertEquals(0, Date.parse("1970-01-01T00:00:00.000"));
-assertEquals(0, Date.parse("1970-01-01T00:00:00"));
-assertEquals(0, Date.parse("1970-01-01T00:00"));
-assertEquals(0, Date.parse("1970-01-01"));
+assertEquals(0, Date.parse("1970-01-01T00:00:00.000Z"));
+assertEquals(0, Date.parse("1970-01-01T00:00:00Z"));
+assertEquals(0, Date.parse("1970-01-01T00:00Z"));
+assertEquals(0, Date.parse("1970-01-01Z"));
 
 assertEquals(0, Date.parse("1970-01T00:00:00.000+00:00"));
 assertEquals(0, Date.parse("1970-01T00:00:00.000-00:00"));
 assertEquals(0, Date.parse("1970-01T00:00:00.000Z"));
-assertEquals(0, Date.parse("1970-01T00:00:00.000"));
-assertEquals(0, Date.parse("1970-01T00:00:00"));
-assertEquals(0, Date.parse("1970-01T00:00"));
-assertEquals(0, Date.parse("1970-01"));
+assertEquals(0, Date.parse("1970-01T00:00:00.000Z"));
+assertEquals(0, Date.parse("1970-01T00:00:00Z"));
+assertEquals(0, Date.parse("1970-01T00:00Z"));
+assertEquals(0, Date.parse("1970-01Z"));
 
 assertEquals(0, Date.parse("1970T00:00:00.000+00:00"));
 assertEquals(0, Date.parse("1970T00:00:00.000-00:00"));
 assertEquals(0, Date.parse("1970T00:00:00.000Z"));
-assertEquals(0, Date.parse("1970T00:00:00.000"));
-assertEquals(0, Date.parse("1970T00:00:00"));
-assertEquals(0, Date.parse("1970T00:00"));
-assertEquals(0, Date.parse("1970"));
+assertEquals(0, Date.parse("1970T00:00:00.000Z"));
+assertEquals(0, Date.parse("1970T00:00:00Z"));
+assertEquals(0, Date.parse("1970T00:00Z"));
+assertEquals(0, Date.parse("1970Z"));
 
 assertEquals(0, Date.parse("+001970-01-01T00:00:00.000+00:00"));
 assertEquals(0, Date.parse("+001970-01-01T00:00:00.000-00:00"));
 assertEquals(0, Date.parse("+001970-01-01T00:00:00.000Z"));
-assertEquals(0, Date.parse("+001970-01-01T00:00:00.000"));
-assertEquals(0, Date.parse("+001970-01-01T00:00:00"));
-assertEquals(0, Date.parse("+001970-01-01T00:00"));
-assertEquals(0, Date.parse("+001970-01-01"));
+assertEquals(0, Date.parse("+001970-01-01T00:00:00.000Z"));
+assertEquals(0, Date.parse("+001970-01-01T00:00:00Z"));
+assertEquals(0, Date.parse("+001970-01-01T00:00Z"));
+assertEquals(0, Date.parse("+001970-01-01Z"));
 
 assertEquals(0, Date.parse("+001970-01T00:00:00.000+00:00"));
 assertEquals(0, Date.parse("+001970-01T00:00:00.000-00:00"));
 assertEquals(0, Date.parse("+001970-01T00:00:00.000Z"));
-assertEquals(0, Date.parse("+001970-01T00:00:00.000"));
-assertEquals(0, Date.parse("+001970-01T00:00:00"));
-assertEquals(0, Date.parse("+001970-01T00:00"));
-assertEquals(0, Date.parse("+001970-01"));
+assertEquals(0, Date.parse("+001970-01T00:00:00.000Z"));
+assertEquals(0, Date.parse("+001970-01T00:00:00Z"));
+assertEquals(0, Date.parse("+001970-01T00:00Z"));
+assertEquals(0, Date.parse("+001970-01Z"));
 
 assertEquals(0, Date.parse("+001970T00:00:00.000+00:00"));
 assertEquals(0, Date.parse("+001970T00:00:00.000-00:00"));
 assertEquals(0, Date.parse("+001970T00:00:00.000Z"));
-assertEquals(0, Date.parse("+001970T00:00:00.000"));
-assertEquals(0, Date.parse("+001970T00:00:00"));
-assertEquals(0, Date.parse("+001970T00:00"));
-assertEquals(0, Date.parse("+001970"));
+assertEquals(0, Date.parse("+001970T00:00:00.000Z"));
+assertEquals(0, Date.parse("+001970T00:00:00Z"));
+assertEquals(0, Date.parse("+001970T00:00Z"));
+assertEquals(0, Date.parse("+001970Z"));
 
 // Check random date.
 assertEquals(70671003500, Date.parse("1972-03-28T23:50:03.500+01:00"));
 assertEquals(70674603500, Date.parse("1972-03-28T23:50:03.500Z"));
-assertEquals(70674603500, Date.parse("1972-03-28T23:50:03.500"));
-assertEquals(70674603000, Date.parse("1972-03-28T23:50:03"));
-assertEquals(70674600000, Date.parse("1972-03-28T23:50"));
-assertEquals(70588800000, Date.parse("1972-03-28"));
+assertEquals(70674603500, Date.parse("1972-03-28T23:50:03.500Z"));
+assertEquals(70674603000, Date.parse("1972-03-28T23:50:03Z"));
+assertEquals(70674600000, Date.parse("1972-03-28T23:50Z"));
+assertEquals(70588800000, Date.parse("1972-03-28Z"));
 
 assertEquals(68338203500, Date.parse("1972-03T23:50:03.500+01:00"));
 assertEquals(68341803500, Date.parse("1972-03T23:50:03.500Z"));
-assertEquals(68341803500, Date.parse("1972-03T23:50:03.500"));
-assertEquals(68341803000, Date.parse("1972-03T23:50:03"));
-assertEquals(68341800000, Date.parse("1972-03T23:50"));
-assertEquals(68256000000, Date.parse("1972-03"));
+assertEquals(68341803500, Date.parse("1972-03T23:50:03.500Z"));
+assertEquals(68341803000, Date.parse("1972-03T23:50:03Z"));
+assertEquals(68341800000, Date.parse("1972-03T23:50Z"));
+assertEquals(68256000000, Date.parse("1972-03Z"));
 
 assertEquals(63154203500, Date.parse("1972T23:50:03.500+01:00"));
 assertEquals(63157803500, Date.parse("1972T23:50:03.500Z"));
-assertEquals(63157803500, Date.parse("1972T23:50:03.500"));
-assertEquals(63157803000, Date.parse("1972T23:50:03"));
-assertEquals(63072000000, Date.parse("1972"));
+assertEquals(63157803500, Date.parse("1972T23:50:03.500Z"));
+assertEquals(63157803000, Date.parse("1972T23:50:03Z"));
+assertEquals(63072000000, Date.parse("1972Z"));
 
 assertEquals(70671003500, Date.parse("+001972-03-28T23:50:03.500+01:00"));
 assertEquals(70674603500, Date.parse("+001972-03-28T23:50:03.500Z"));
-assertEquals(70674603500, Date.parse("+001972-03-28T23:50:03.500"));
-assertEquals(70674603000, Date.parse("+001972-03-28T23:50:03"));
-assertEquals(70674600000, Date.parse("+001972-03-28T23:50"));
-assertEquals(70588800000, Date.parse("+001972-03-28"));
+assertEquals(70674603500, Date.parse("+001972-03-28T23:50:03.500Z"));
+assertEquals(70674603000, Date.parse("+001972-03-28T23:50:03Z"));
+assertEquals(70674600000, Date.parse("+001972-03-28T23:50Z"));
+assertEquals(70588800000, Date.parse("+001972-03-28Z"));
 
 assertEquals(68338203500, Date.parse("+001972-03T23:50:03.500+01:00"));
 assertEquals(68341803500, Date.parse("+001972-03T23:50:03.500Z"));
-assertEquals(68341803500, Date.parse("+001972-03T23:50:03.500"));
-assertEquals(68341803000, Date.parse("+001972-03T23:50:03"));
-assertEquals(68341800000, Date.parse("+001972-03T23:50"));
-assertEquals(68256000000, Date.parse("+001972-03"));
+assertEquals(68341803500, Date.parse("+001972-03T23:50:03.500Z"));
+assertEquals(68341803000, Date.parse("+001972-03T23:50:03Z"));
+assertEquals(68341800000, Date.parse("+001972-03T23:50Z"));
+assertEquals(68256000000, Date.parse("+001972-03Z"));
 
 assertEquals(63154203500, Date.parse("+001972T23:50:03.500+01:00"));
 assertEquals(63157803500, Date.parse("+001972T23:50:03.500Z"));
-assertEquals(63157803500, Date.parse("+001972T23:50:03.500"));
-assertEquals(63157803000, Date.parse("+001972T23:50:03"));
-assertEquals(63072000000, Date.parse("+001972"));
+assertEquals(63157803500, Date.parse("+001972T23:50:03.500Z"));
+assertEquals(63157803000, Date.parse("+001972T23:50:03Z"));
+assertEquals(63072000000, Date.parse("+001972Z"));
 
 
 // Ensure that ISO-years in the range 00-99 aren't translated to the range
 // 1950..2049.
-assertEquals(-60904915200000, Date.parse("0040-01-01"));
-assertEquals(-60273763200000, Date.parse("0060-01-01"));
-assertEquals(-62167219200000, Date.parse("0000-01-01"));
-assertEquals(-62167219200000, Date.parse("+000000-01-01"));
+assertEquals(-60904915200000, Date.parse("0040-01-01T00:00Z"));
+assertEquals(-60273763200000, Date.parse("0060-01-01T00:00Z"));
+assertEquals(-62167219200000, Date.parse("0000-01-01T00:00Z"));
+assertEquals(-62167219200000, Date.parse("+000000-01-01T00:00Z"));
 
 // Test negative years.
-assertEquals(-63429523200000, Date.parse("-000040-01-01"));
-assertEquals(-64060675200000, Date.parse("-000060-01-01"));
-assertEquals(-124397510400000, Date.parse("-001972-01-01"));
+assertEquals(-63429523200000, Date.parse("-000040-01-01Z"));
+assertEquals(-64060675200000, Date.parse("-000060-01-01Z"));
+assertEquals(-124397510400000, Date.parse("-001972-01-01Z"));
 
 // Check time-zones.
 assertEquals(70674603500, Date.parse("1972-03-28T23:50:03.500Z"));
 for (var i = 0; i < 24; i++) {
   var hh = (i < 10) ? "0" + i : "" + i;
   for (var j = 0; j < 60; j += 15) {
     var mm = (j < 10) ? "0" + j : "" + j;
     var ms = (i * 60 + j) * 60000;
     var string = "1972-03-28T23:50:03.500-" + hh + ":" + mm;
     assertEquals(70674603500 + ms, Date.parse(string), string);
@@ skipping 27 matching lines @@
 delete Date.prototype.getUTCHours;
 delete Date.prototype.getUTCMinutes;
 delete Date.prototype.getUTCSeconds;
 delete Date.prototype.getUTCMilliseconds;
 date.toISOString();
 
 (function TestDeleteToString() {
   assertTrue(delete Date.prototype.toString);
   assertTrue('[object Date]' !== Date());
 })();