Merge pull request #21429 from yui-knk/fix/revert_disable_extension

Make revert of `disable_extension` to work

activerecord/lib/active_record/migration/command_recorder.rb

@@ -17,7 +17,7 @@ module ActiveRecord
       ReversibleAndIrreversibleMethods = [:create_table, :create_join_table, :rename_table, :add_column, :remove_column,
         :rename_index, :rename_column, :add_index, :remove_index, :add_timestamps, :remove_timestamps,
         :change_column_default, :add_reference, :remove_reference, :transaction,
-        :drop_join_table, :drop_table, :execute_block, :enable_extension,
+        :drop_join_table, :drop_table, :execute_block, :enable_extension, :disable_extension,
         :change_column, :execute, :remove_columns, :change_column_null,
         :add_foreign_key, :remove_foreign_key
       ]

activerecord/test/cases/invertible_migration_test.rb

@@ -93,6 +93,18 @@ module ActiveRecord
       end
     end
 
+    class DisableExtension1 < SilentMigration
+      def change
+        enable_extension "hstore"
+      end
+    end
+
+    class DisableExtension2 < SilentMigration
+      def change
+        disable_extension "hstore"
+      end
+    end
+
     class LegacyMigration < ActiveRecord::Migration
       def self.up
         create_table("horses") do |t|
@@ -255,6 +267,27 @@ module ActiveRecord
       assert_equal "Sekitoba", Horse.new.name
     end
 
+    if current_adapter?(:PostgreSQLAdapter)
+      def test_migrate_enable_and_disable_extension
+        migration1 = InvertibleMigration.new
+        migration2 = DisableExtension1.new
+        migration3 = DisableExtension2.new
+
+        migration1.migrate(:up)
+        migration2.migrate(:up)
+        assert_equal true, Horse.connection.extension_enabled?('hstore')
+
+        migration3.migrate(:up)
+        assert_equal false, Horse.connection.extension_enabled?('hstore')
+
+        migration3.migrate(:down)
+        assert_equal true, Horse.connection.extension_enabled?('hstore')
+
+        migration2.migrate(:down)
+        assert_equal false, Horse.connection.extension_enabled?('hstore')
+      end
+    end
+
     def test_revert_order
       block = Proc.new{|t| t.string :name }
       recorder = ActiveRecord::Migration::CommandRecorder.new(ActiveRecord::Base.connection)