Add tests for aliased types

activerecord/test/cases/schema_dumper_test.rb

@@ -227,6 +227,12 @@ class SchemaDumperTest < ActiveRecord::TestCase
     assert_match %r{t\.float\s+"temperature"$}, output
   end
 
+  def test_schema_dump_aliased_types
+    output = standard_dump
+    assert_match %r{t\.binary\s+"blob_data"$}, output
+    assert_match %r{t\.decimal\s+"numeric_number"}, output
+  end
+
   if ActiveRecord::Base.connection.supports_expression_index?
     def test_schema_dump_expression_indices
       index_definition = dump_table_schema("companies").split(/\n/).grep(/t\.index.*company_expression_index/).first.strip

activerecord/test/schema/schema.rb

@@ -93,6 +93,7 @@ ActiveRecord::Schema.define do
     t.string :name
     t.binary :data
     t.binary :short_data, limit: 2048
+    t.blob :blob_data
   end
 
   create_table :birds, force: true do |t|
@@ -589,6 +590,7 @@ ActiveRecord::Schema.define do
     t.decimal :my_house_population, precision: 2, scale: 0
     t.decimal :decimal_number
     t.decimal :decimal_number_with_default, precision: 3, scale: 2, default: 2.78
+    t.numeric :numeric_number
     t.float   :temperature
     t.decimal :decimal_number_big_precision, precision: 20
     # Oracle/SQLServer supports precision up to 38