Rename DateTime constants to full names.

tests/standalone/io/http_date_test.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import "package:expect/expect.dart";
 import "dart:async";
 import "dart:math";
 
 part "../../../sdk/lib/io/io_sink.dart";
 part "../../../sdk/lib/io/http.dart";
 part "../../../sdk/lib/io/http_impl.dart";
 part "../../../sdk/lib/io/http_parser.dart";
 part "../../../sdk/lib/io/http_utils.dart";
 part "../../../sdk/lib/io/socket.dart";
 
 void testParseHttpDate() {
   DateTime date;
-  date = new DateTime.utc(1999, DateTime.JUN, 11, 18, 46, 53, 0);
+  date = new DateTime.utc(1999, DateTime.JUNE, 11, 18, 46, 53, 0);
   Expect.equals(date, _HttpUtils.parseDate("Fri, 11 Jun 1999 18:46:53 GMT"));
   Expect.equals(date, _HttpUtils.parseDate("Friday, 11-Jun-1999 18:46:53 GMT"));
   Expect.equals(date, _HttpUtils.parseDate("Fri Jun 11 18:46:53 1999"));
 
-  date = new DateTime.utc(1970, DateTime.JAN, 1, 0, 0, 0, 0);
+  date = new DateTime.utc(1970, DateTime.JANUARY, 1, 0, 0, 0, 0);
   Expect.equals(date, _HttpUtils.parseDate("Thu, 1 Jan 1970 00:00:00 GMT"));
   Expect.equals(date,
                 _HttpUtils.parseDate("Thursday, 1-Jan-1970 00:00:00 GMT"));
   Expect.equals(date, _HttpUtils.parseDate("Thu Jan  1 00:00:00 1970"));
 
-  date = new DateTime.utc(2012, DateTime.MAR, 5, 23, 59, 59, 0);
+  date = new DateTime.utc(2012, DateTime.MARCH, 5, 23, 59, 59, 0);
   Expect.equals(date, _HttpUtils.parseDate("Mon, 5 Mar 2012 23:59:59 GMT"));
   Expect.equals(date, _HttpUtils.parseDate("Monday, 5-Mar-2012 23:59:59 GMT"));
   Expect.equals(date, _HttpUtils.parseDate("Mon Mar  5 23:59:59 2012"));
 }
 
 void testFormatParseHttpDate() {
   test(int year,
        int month,
        int day,
        int hours,
        int minutes,
        int seconds,
        String expectedFormatted) {
     DateTime date;
     String formatted;
     date = new DateTime.utc(year, month, day, hours, minutes, seconds, 0);
     formatted = _HttpUtils.formatDate(date);
     Expect.equals(expectedFormatted, formatted);
     Expect.equals(date, _HttpUtils.parseDate(formatted));
   }
 
-  test(1999, DateTime.JUN, 11, 18, 46, 53, "Fri, 11 Jun 1999 18:46:53 GMT");
-  test(1970, DateTime.JAN, 1, 0, 0, 0, "Thu, 1 Jan 1970 00:00:00 GMT");
-  test(2012, DateTime.MAR, 5, 23, 59, 59, "Mon, 5 Mar 2012 23:59:59 GMT");
+  test(1999, DateTime.JUNE, 11, 18, 46, 53, "Fri, 11 Jun 1999 18:46:53 GMT");
+  test(1970, DateTime.JANUARY, 1, 0, 0, 0, "Thu, 1 Jan 1970 00:00:00 GMT");
+  test(2012, DateTime.MARCH, 5, 23, 59, 59, "Mon, 5 Mar 2012 23:59:59 GMT");
 }
 
 void testParseHttpDateFailures() {
   Expect.throws(() {
     _HttpUtils.parseDate("");
   });
   String valid = "Mon, 5 Mar 2012 23:59:59 GMT";
   for (int i = 1; i < valid.length - 1; i++) {
     String tmp = valid.substring(0, i);
     Expect.throws(() {
@@ skipping 27 matching lines @@
        int month,
        int day,
        int hours,
        int minutes,
        int seconds,
        String formatted) {
     DateTime date = new DateTime.utc(year, month, day, hours, minutes, seconds, 0);
     Expect.equals(date, _HttpUtils.parseCookieDate(formatted));
   }
 
-  test(2012, DateTime.JUN, 19, 14, 15, 01, "tue, 19-jun-12 14:15:01 gmt");
-  test(2021, DateTime.JUN, 09, 10, 18, 14, "Wed, 09-Jun-2021 10:18:14 GMT");
-  test(2021, DateTime.JAN, 13, 22, 23, 01, "Wed, 13-Jan-2021 22:23:01 GMT");
-  test(2013, DateTime.JAN, 15, 21, 47, 38, "Tue, 15-Jan-2013 21:47:38 GMT");
-  test(1970, DateTime.JAN, 01, 00, 00, 01, "Thu, 01-Jan-1970 00:00:01 GMT");
+  test(2012, DateTime.JUNE, 19, 14, 15, 01, "tue, 19-jun-12 14:15:01 gmt");
+  test(2021, DateTime.JUNE, 09, 10, 18, 14, "Wed, 09-Jun-2021 10:18:14 GMT");
+  test(2021, DateTime.JANUARY, 13, 22, 23, 01, "Wed, 13-Jan-2021 22:23:01 GMT");
+  test(2013, DateTime.JANUARY, 15, 21, 47, 38, "Tue, 15-Jan-2013 21:47:38 GMT");
+  test(1970, DateTime.JANUARY, 01, 00, 00, 01, "Thu, 01-Jan-1970 00:00:01 GMT");
 }
 
 void main() {
   testParseHttpDate();
   testFormatParseHttpDate();
   testParseHttpDateFailures();
   testParseHttpCookieDate();
 }