public static function test_field_types_can_be_stored()
 {
     $field_types = self::get_field_types();
     $specified_table = new Database_SpecifiedTable('ps_foo_bar');
     foreach (array_keys($field_types) as $key) {
         $specified_table->add_field_type($key, $field_types[$key]);
     }
     /*
      * Test that they went in.
      */
     foreach (array_keys($field_types) as $key) {
         if ($specified_table->get_field_type($key) != $field_types[$key]) {
             return FALSE;
         }
     }
     return TRUE;
 }