Add UTC offset information to the timezone

In the User Settings, indicate besides the timezone name what the
actual timezone/UTC offset is.

Fixes bug 1103003

Change-Id: I8070df2bc0380da1555c40dc9394895fbfde6848

openstack_dashboard/dashboards/settings/user/forms.py

@@ -14,6 +14,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from datetime import datetime
 import pytz
 
 from django import shortcuts
@@ -38,7 +39,21 @@ class UserSettingsForm(forms.SelfHandlingForm):
         self.fields['language'].choices = languages
 
         # Timezones
-        timezones = [(tz, tz) for tz in pytz.common_timezones]
+        d = datetime(2011, 1, 1)
+        timezones = []
+        for tz in pytz.common_timezones:
+            try:
+                utc_offset = pytz.timezone(tz).localize(d).strftime('%z')
+                utc_offset = " (UTC %s:%s)" % (utc_offset[:3], utc_offset[3:])
+            except:
+                utc_offset = ""
+
+            if tz != "UTC":
+                tz_name = "%s%s" % (tz, utc_offset)
+            else:
+                tz_name = tz
+            timezones.append((tz, tz_name))
+
         self.fields['timezone'].choices = timezones
 
     def handle(self, request, data):

openstack_dashboard/dashboards/settings/user/tests.py

@@ -0,0 +1,31 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright 2013 Red Hat, Inc.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from django.core.urlresolvers import reverse
+
+from openstack_dashboard.test import helpers as test
+
+
+INDEX_URL = reverse("horizon:settings:user:index")
+
+
+class UserSettingsTest(test.TestCase):
+
+    def test_timezone_offset_is_displayed(self):
+        res = self.client.get(INDEX_URL)
+
+        self.assertContains(res, "Australia/Melbourne (UTC +11:00)")
+        self.assertContains(res, "Canada/Newfoundland (UTC -03:30)")