Time zone issue when dealing with occurrences

[stevschmid]

I stumbled upon a time zone issue when dealing with Rails TimeWithZone and the occurrence finding methods (e.g. next_occurrence and occurrences_between).

Example: I create a schedule with starting_time in UTC and I'm calling the next_occurrence method with the opening_time argument set to a time in another time zone (e.g. GMT+1). The returned occurrence is not as the doc describes in the starting_time time zone (UTC), but in the time zone I supplied via the argument (GMT+1). More severe is that the time is wrong.

The example below reproduces the problem (ice_cube 0.10.0, Ruby 1.9.3 + Rails 3.2.12)

require 'ice_cube'
require 'active_support/time'
require 'active_support/core_ext'

schedule = IceCube::Schedule.new('2013-03-01 00:00:00 +00:00'.to_time)
schedule.add_recurrence_rule IceCube::Rule.daily
# schedule.start_time is 2013-03-01 00:00:00 UTC

reference_time = Time.new(2013,3,4).in_time_zone('Bern')
# reference_time is Fri, 01 Mar 2013 00:00:00 CET +01:00

p schedule.next_occurrence(reference_time)
# Tue, 05 Mar 2013 00:00:00 CET +01:00 (wrong time zone, wrong time)

p schedule.next_occurrence(reference_time).utc
#2013-03-04 23:00:00 UTC (wrong time)

p schedule.next_occurrence(reference_time.utc)
#2013-03-04 00:00:00 UTC (correct)

My first impression is that the find_occurrences function should make sure that the zones of opening_time and closing_time match the zone of starting_time.

[avit]

Thanks for the report, I'll have a look.