1 files changed, 8 insertions, 3 deletions
diff --git a/activerecord/test/cases/adapters/postgresql/json_test.rb b/activerecord/test/cases/adapters/postgresql/json_test.rb
index 86ba849445..340ca29c0e 100644
--- a/activerecord/test/cases/adapters/postgresql/json_test.rb
+++ b/activerecord/test/cases/adapters/postgresql/json_test.rb
@@ -1,10 +1,10 @@
 # encoding: utf-8
-
 require "cases/helper"
-require 'active_record/base'
-require 'active_record/connection_adapters/postgresql_adapter'
+require 'support/schema_dumping_helper'
 
 module PostgresqlJSONSharedTestCases
+  include SchemaDumpingHelper
+
   class JsonDataType < ActiveRecord::Base
     self.table_name = 'json_data_type'
 
@@ -64,6 +64,11 @@ module PostgresqlJSONSharedTestCases
     JsonDataType.reset_column_information
   end
 
+  def test_schema_dumping
+    output = dump_table_schema("json_data_type")
+    assert_match(/t.#{column_type.to_s}\s+"payload",\s+default: {}/, output)
+  end
+
   def test_cast_value_on_write
     x = JsonDataType.new payload: {"string" => "foo", :symbol => :bar}
     assert_equal({"string" => "foo", :symbol => :bar}, x.payload_before_type_cast)