2 files changed, 6 insertions, 0 deletions
diff --git a/activerecord/test/cases/aggregations_test.rb b/activerecord/test/cases/aggregations_test.rb
index 8a728902a8..4e865264c7 100644
--- a/activerecord/test/cases/aggregations_test.rb
+++ b/activerecord/test/cases/aggregations_test.rb
@@ -143,6 +143,11 @@ class AggregationsTest < ActiveRecord::TestCase
     customers(:barney).fullname = { first: "Barney", last: "Stinson" }
     assert_equal "Barney STINSON", customers(:barney).name
   end
+
+  def test_assigning_hash_without_custom_converter
+    customers(:barney).fullname_no_converter = { first: "Barney", last: "Stinson" }
+    assert_equal({ first: "Barney", last: "Stinson" }.to_s, customers(:barney).name)
+  end
 end
 
 class OverridingAggregationsTest < ActiveRecord::TestCase
diff --git a/activerecord/test/models/customer.rb b/activerecord/test/models/customer.rb
index 3338aaf7e1..d464759430 100644
--- a/activerecord/test/models/customer.rb
+++ b/activerecord/test/models/customer.rb
@@ -7,6 +7,7 @@ class Customer < ActiveRecord::Base
   composed_of :non_blank_gps_location, :class_name => "GpsLocation", :allow_nil => true, :mapping => %w(gps_location gps_location),
               :converter => lambda { |gps| self.gps_conversion_was_run = true; gps.blank? ? nil : GpsLocation.new(gps)}
   composed_of :fullname, :mapping => %w(name to_s), :constructor => Proc.new { |name| Fullname.parse(name) }, :converter => :parse
+  composed_of :fullname_no_converter, :mapping => %w(name to_s), class_name: "Fullname"
 end
 
 class Address