def test_that_download_url_has_lastUpdated_if_status_of_tracker_changed(self):
        five_days_ago = timezone.now() - timedelta(days=5)

        downloader = DataSetDownloader(self.data_set, 201505, 'xxxx', DataSyncTrackerStatus.INIT_DOWNLOAD)
        url = downloader.get_download_url()


        self.assertTrue(('lastUpdated=%s&' % five_days_ago.strftime('%Y-%m-%d')) in url)
    def test_that_download_url_has_not_lastUpdated_field_at_beginning(self):
        downloader = DataSetDownloader(self.data_set, 201505, 'xxxx', DataSyncTrackerStatus.UNKNOWN)
        url = downloader.get_download_url()

        self.assertTrue('lastUpdated' not in url)