Add argument serializer TimeWithZoneSerializer

The serializer serializes an instance of `ActiveSupport::TimeWithZone`.
The serializer deserializes value to `ActiveSupport::TimeWithZone` if possible.

activejob/lib/active_job/serializers.rb

@@ -12,9 +12,10 @@ module ActiveJob
     autoload :ObjectSerializer
     autoload :SymbolSerializer
     autoload :DurationSerializer
-    autoload :DateSerializer
-    autoload :TimeSerializer
     autoload :DateTimeSerializer
+    autoload :DateSerializer
+    autoload :TimeWithZoneSerializer
+    autoload :TimeSerializer
 
     mattr_accessor :_additional_serializers
     self._additional_serializers = Set.new
@@ -57,6 +58,7 @@ module ActiveJob
       DurationSerializer,
       DateTimeSerializer,
       DateSerializer,
+      TimeWithZoneSerializer,
       TimeSerializer
   end
 end

activejob/lib/active_job/serializers/time_with_zone_serializer.rb

@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+module ActiveJob
+  module Serializers
+    class TimeWithZoneSerializer < ObjectSerializer # :nodoc:
+      def serialize(time)
+        super("value" => time.iso8601)
+      end
+
+      def deserialize(hash)
+        Time.iso8601(hash["value"]).in_time_zone
+      end
+
+      private
+
+        def klass
+          ActiveSupport::TimeWithZone
+        end
+    end
+  end
+end

activejob/test/cases/argument_serialization_test.rb

@@ -102,6 +102,14 @@ class ArgumentSerializationTest < ActiveSupport::TestCase
     assert_instance_of ActiveSupport::HashWithIndifferentAccess, perform_round_trip([indifferent_access]).first
   end
 
+  test "should maintain time with zone" do
+    Time.use_zone "Alaska" do
+      time_with_zone = Time.new(2002, 10, 31, 2, 2, 2).in_time_zone
+      assert_instance_of ActiveSupport::TimeWithZone, perform_round_trip([time_with_zone]).first
+      assert_arguments_unchanged time_with_zone
+    end
+  end
+
   test "should disallow non-string/symbol hash keys" do
     assert_raises ActiveJob::SerializationError do
       ActiveJob::Arguments.serialize [ { 1 => 2 } ]