Tim Knapp wrote at 2009-3-23 18:21 +1300:
>I would like to override the DateTime.DateTime class within my
>functional tests. I have tried mocking (via mocker) and injecting the
>subclassed DateTime class into sys.modules (results in a
>TraversalError). The fartherest I've gotten is to set DateTime.DateTime
>= MySubclassedDateTime in my tests.py, which does work for the code
>'within' the package(s) I'm testing but all the Zope core code (i.e. the
>instance created within PloneTestCase) is still referencing the global
>DateTime module. Has anyone successfully done this?

"import DateTime; DateTime=<myDateTimeClass>" should be able
to replace the "DateTime" class -- sometimes.

Be aware, however, that this replacing takes effect only after
your assignment. Modules that already have imported the "DateTime"
class will not be affected.

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