'Tests that nothing is updated when run with the `dry_run` option'

@ddt.data(('2015-05-05', '2015-05-07', '2015-05-06'), ('2015-05-05', '2015-05-07', '2015-05-08'), ('2015-05-05', '2015-05-07', '2015-05-04'))
@ddt.unpack
def test_dry_run(self, after, before, created):

    self.update_task_created(created)
    call_command('fail_old_tasks', QUEUING, dry_run=True, before=before, after=after)
    (type_1_queueing, type_1_progress, type_2_queueing) = self.get_tasks()
    self.assertEqual(type_1_queueing.task_state, QUEUING)
    self.assertEqual(type_2_queueing.task_state, QUEUING)
    self.assertEqual(type_1_progress.task_state, PROGRESS)
