1 files changed, 53 insertions, 0 deletions
diff --git a/activerecord/test/cases/adapters/postgresql/uuid_test.rb b/activerecord/test/cases/adapters/postgresql/uuid_test.rb
new file mode 100644
index 0000000000..c0c0e8898c
--- /dev/null
+++ b/activerecord/test/cases/adapters/postgresql/uuid_test.rb
@@ -0,0 +1,53 @@
+# encoding: utf-8
+
+require "cases/helper"
+require 'active_record/base'
+require 'active_record/connection_adapters/postgresql_adapter'
+
+class PostgresqlUUIDTest < ActiveRecord::TestCase
+  class UUID < ActiveRecord::Base
+    self.table_name = 'pg_uuids'
+  end
+
+  def setup
+    @connection = ActiveRecord::Base.connection
+
+    unless @connection.supports_extensions?
+      return skip "do not test on PG without uuid-ossp"
+    end
+
+    unless @connection.extension_enabled?('uuid-ossp')
+      @connection.enable_extension 'uuid-ossp'
+      @connection.commit_db_transaction
+    end
+
+    @connection.reconnect!
+
+    @connection.transaction do
+      @connection.create_table('pg_uuids', id: :uuid) do |t|
+        t.string 'name'
+        t.uuid 'other_uuid', default: 'uuid_generate_v4()'
+      end
+    end
+  end
+
+  def teardown
+    @connection.execute 'drop table if exists pg_uuids'
+  end
+
+  def test_id_is_uuid
+    assert_equal :uuid, UUID.columns_hash['id'].type
+    assert UUID.primary_key
+  end
+
+  def test_id_has_a_default
+    u = UUID.create
+    assert_not_nil u.id
+  end
+
+  def test_auto_create_uuid
+    u = UUID.create
+    u.reload
+    assert_not_nil u.other_uuid
+  end
+end