FakeDatetime's timestamp() is not consistent with datetime().timestamp()

[BielStela]

the result of timestamp() on a FakeDatetime is not the same result as in a datetime.datetime.

I would expect this to succed:

t = datetime.datetime(2024, 1, 1, 12, 0, 0)
with freeze_time(t):
    assert datetime.datetime.now().timestamp() == t.timestamp()

but it fails with:

AssertionError: assert 1704110400.0 == 1704106800.0

[BielStela]

it works it I set a tz_info t = datetime.datetime(2024, 1, 1, 12, 0, tzinfo=datetime.UTC). No real clue what is going on but maybe it is because naive timestamp have to be computed manually and the implementation of the original timestamp doesn't look nice at all: https://github.com/python/cpython/blob/31a28cbae0989f57ad01b428c007dade24d9593a/Lib/_pydatetime.py#L1893