Validation for until should use schedule zone

lib/ice_cube/time_util.rb

@@ -42,7 +42,7 @@ def self.build_in_zone(args, reference)
     end
 
     def self.match_zone(input_time, reference)
-      return unless time = ensure_time(input_time)
+      return unless time = ensure_time(input_time, reference)
       time = if reference.respond_to? :time_zone
                time.in_time_zone(reference.time_zone)
              else
@@ -65,9 +65,13 @@ def self.ensure_time(time, reference = nil, date_eod = false)
         Time.local(time.year, time.month, time.day, time.hour, time.min, time.sec)
       when Date
         if date_eod
-          end_of_date(time)
+          end_of_date(time, reference)
         else
-          time.to_time
+          if reference
+            build_in_zone([time.year, time.month, time.day], reference)
+          else
+            time.to_time
+          end
         end
       else
         time

lib/ice_cube/validations/until.rb

@@ -11,7 +11,6 @@ def until_time
     deprecated_alias :until_date, :until_time
 
     def until(time)
-      time = TimeUtil.ensure_time(time, nil, true)
       @until = time
       replace_validations_for(:until, time.nil? ? nil : [Validation.new(time)])
       self
@@ -34,7 +33,8 @@ def dst_adjust?
       end
 
       def validate(step_time, schedule)
-        raise UntilExceeded if step_time > time
+        end_time = TimeUtil.ensure_time(time, schedule.start_time, true)
+        raise UntilExceeded if step_time > end_time
       end
 
       def build_s(builder)

spec/examples/ice_cube_spec.rb

@@ -232,6 +232,21 @@
       Time.utc(2010, 11, 9, 5, 0, 0)]
   end
 
+  WORLD_TIME_ZONES.each do |zone|
+    context "in #{zone}", :system_time_zone => zone do
+      it 'works with a until date that is a Date, but the start date is UTC' do
+        start_time = Time.utc(2016, 1, 1, 0, 0, 0)
+        schedule = IceCube::Schedule.new(start_time)
+        schedule.add_recurrence_rule IceCube::Rule.daily.until(Date.new(2016, 1, 2))
+        times = schedule.all_occurrences
+        expect(times).to eq [
+                          Time.utc(2016, 1, 1, 0, 0, 0),
+                          Time.utc(2016, 1, 2, 0, 0, 0)
+                        ]
+      end
+    end
+  end
+
   it 'works with a monthly rule iterating on UTC' do
     start_time = Time.utc(2010, 4, 24, 15, 45, 0)
     schedule = IceCube::Schedule.new(start_time)