rical bug

ical_bug.rb

#!/usr/bin/env ruby

require 'rubygems'
require 'active_support'
require 'ri_cal'

def create_calendar(options={:all_events => false, :dtstamp => false})
  Time.zone = "Eastern Time (US & Canada)"
  calendar = RiCal.Calendar do |cal|
    cal.event do |event|
      event.summary = "8:30AM 4th Sunday"
      event.dtstart =  Time.zone.parse("11/22/2009 08:30:00")
      event.dtend = Time.zone.parse("11/22/2009 10:00:00")
      event.rrule = {:interval=>1, :freq=>"monthly", :byday=>["4SU"], :until=>Time.zone.parse("6/2/2010")}
      if (options[:dtstamp])
        event.dtstamp = Time.zone.parse("20100406")
      end
    end
    if (options[:all_events])
      cal.event do |event|
        event.summary = ""
        event.dtstart =  Time.zone.parse("10/1/2009 08:30:00")
        event.dtend = Time.zone.parse("10/1/2009 10:00:00")
      end
      cal.event do |event|
        event.summary = ""
        event.dtstart =  Time.zone.parse("1/1/2010 08:30:00")
        event.dtend = Time.zone.parse("1/1/2010 10:00:00")
      end
      cal.event do |event|
        event.summary = ""
        event.dtstart =  Time.zone.parse("4/1/2010 08:30:00")
        event.dtend = Time.zone.parse("4/1/2010 10:00:00")
      end
      cal.event do |event|
        event.summary = ""
        event.dtstart =  Time.zone.parse("12/1/2010 08:30:00")
        event.dtend = Time.zone.parse("12/1/2010 10:00:00")
      end
    end
  end
  
  file_name = (options[:all_events] ? "all_events" : "the_event")
  file_name << (options[:dtstamp] ? "_dtstamp" : "")
  file_name << ".ics"

  File.open("#{file_name}", "w+") {|f| f.print calendar.export }

  calendar
end

def hour_of_event(summary, calendar)
  calendar = RiCal.parse(StringIO.new(calendar.export)).first
  event = calendar.events.detect{ |event| event.summary == "8:30AM 4th Sunday" }
  event.start_time.hour
end

# allevents, correct time in iCal
p hour_of_event("8:30AM 4th Sunday", create_calendar(:all_events => true, :dtstamp => false))

# theevent_dtstamp, correct time in iCal
p hour_of_event("8:30AM 4th Sunday", create_calendar(:all_events => false, :dtstamp => true))

# theevent, wrong time in iCal
p hour_of_event("8:30AM 4th Sunday", create_calendar(:all_events => false, :dtstamp => false))

# allevents_dtstamp, wrong time in iCal
p hour_of_event("8:30AM 4th Sunday", create_calendar(:all_events => true, :dtstamp => true))