from zilencer.management.commands.populate_db import choose_date_sent from zerver.lib.test_classes import ZulipTestCase from django.utils.timezone import timedelta as timezone_timedelta class TestChoosePubDate(ZulipTestCase): def test_choose_date_sent_large_tot_messages(self) -> None: """ Test for a bug that was present, where specifying a large amount of messages to generate would cause each message to have date_sent set to timezone_now(), instead of the date_sents being distributed across the span of several days. """ tot_messages = 1000000 datetimes_list = [ choose_date_sent(i, tot_messages, 1) for i in range(1, tot_messages, tot_messages // 100) ] # Verify there is a meaningful difference between elements. for i in range(1, len(datetimes_list)): self.assertTrue(datetimes_list[i] - datetimes_list[i-1] > timezone_timedelta(minutes=5))