Function time_passes

examples/versioned_rows/versioned_update_old_row.py:167–184

keep track of timestamps in terms of the database and allow time to pass between steps.

(s)

def time_passes(s):
    """keep track of timestamps in terms of the database and allow time to
    pass between steps."""

    # close the transaction, if any, since PG time doesn't increment in the
    # transaction
    s.commit()

    # get "now" in terms of the DB so we can keep the ranges low and
    # still have our assertions pass
    if times:
        time.sleep(1)

    times.append(datetime.datetime.now())

    if len(times) > 1:
        assert times[-1] > times[-2]
    return times[-1]


e = create_engine("sqlite://", echo="debug")