#NEWLINE# def test_instance_groups_with_ebs_config_missing_volume_type( self ) : #NEWLINE# #INDENT# cmd = self . prefix #NEWLINE# cmd += INSTANCE_GROUPS_WITH_EBS_VOLUME_MISSING_VOLTYPE_ARG #NEWLINE# stderr = self . run_cmd ( cmd , 255 ) [ 1 ] #NEWLINE# self . assert_error_message_has_field_name ( cmd , 'VolumeType' )