allow the "USING" statement to be specified on change column calls

1 files changed, 25 insertions, 0 deletions

diff --git a/activerecord/test/cases/adapters/postgresql/change_schema_test.rb b/activerecord/test/cases/adapters/postgresql/change_schema_test.rb
new file mode 100644
index 0000000000..90cd28c2ec
--- /dev/null
+++ b/activerecord/test/cases/adapters/postgresql/change_schema_test.rb
@@ -0,0 +1,25 @@
+require 'cases/helper'
+
+module ActiveRecord
+  class Migration
+    class PGChangeSchemaTest < ActiveRecord::TestCase
+      attr_reader :connection
+
+      def setup
+        super
+        @connection = ActiveRecord::Base.connection
+        connection.create_table(:strings) do |t|
+          t.string :somedate
+        end
+      end
+
+      def teardown
+        connection.drop_table :strings
+      end
+
+      def test_change_string_to_date
+        connection.change_column :strings, :somedate, :timestamp, using: 'CAST("somedate" AS timestamp)'
+      end
+    end
+  end
+end