I have a legacy database from which my Django application must migrate data
into a Django database. The relevant date fields are actually TIMESTAMP
columns in the database, but something (perhaps Django, or python's MySQL
driver?) loads these columns as timezone naive datetime objects, rather
than integers. So I wrote my migration code under the assumption that the
dates coming out of the legacy database are timezone naive.
Unfortunately, now that I'm trying to write tests for this migrator, I
can't find any way to load timezone naive datetimes *into* my test legacy
database. I can't use integer timestamps, because the DateTimeField doesn't
accept that kind of input (I get a JSON serialization error when I try), so
I'm using datetime strings like this: "2014-08-01T00:00:00" in my fixture. But
regardless of whether or not I include a UTC offset in the string, the
datetime objects that come out of the database during my tests are somehow
timezone aware. This causes my code to crash because it calls make_aware(),
which throws ValueError('Not naive datetime (tzinfo is already set)').
It seems like having USE_TZ = True is forcibly making my fixture dates
timezone aware, which I don't want. But USE_TZ will be True during the
actual migration, so I can't just turn it off during the tests. So how can
I load timezone naive dates into my test database?
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