Bugfixes: get the unit tests passing again

test/date_format-test.js

@@ -3,11 +3,13 @@ var vows = require('vows')
 , assert = require('assert')
 , dateFormat = require('../lib/date_format');
 
+function createFixedDate() {
+  return new Date(2010, 0, 11, 14, 31, 30, 5);
+}
+
 vows.describe('date_format').addBatch({
   'Date extensions': {
-    topic: function() {
-      return new Date(2010, 0, 11, 14, 31, 30, 5);
-    },
+    topic: createFixedDate,
     'should format a date as string using a pattern': function(date) {
       assert.equal(
         dateFormat.asString(dateFormat.DATETIME_FORMAT, date),
@@ -20,13 +22,16 @@ vows.describe('date_format').addBatch({
         '2010-01-11 14:31:30.005'
       );
     },
-    'should provide a ISO8601 with timezone offset format': function(date) {
+    'should provide a ISO8601 with timezone offset format': function() {
+      var date = createFixedDate();
+      date.setMinutes(date.getMinutes() - date.getTimezoneOffset() - 660);
       date.getTimezoneOffset = function() { return -660; };
       assert.equal(
         dateFormat.asString(dateFormat.ISO8601_WITH_TZ_OFFSET_FORMAT, date),
         "2010-01-11T14:31:30+1100"
       );
-
+      date = createFixedDate();
+      date.setMinutes(date.getMinutes() - date.getTimezoneOffset() + 120);
       date.getTimezoneOffset = function() { return 120; };
       assert.equal(
         dateFormat.asString(dateFormat.ISO8601_WITH_TZ_OFFSET_FORMAT, date),
@@ -40,7 +45,9 @@ vows.describe('date_format').addBatch({
         '14:31:30.005'
       );
     },
-    'should provide a custom format': function(date) {
+    'should provide a custom format': function() {
+      var date = createFixedDate();
+      date.setMinutes(date.getMinutes() - date.getTimezoneOffset() + 120);
       date.getTimezoneOffset = function() { return 120; };
       assert.equal(
         dateFormat.asString("O.SSS.ss.mm.hh.dd.MM.yy", date),