Test failures with DateFields and DecimalField under Windows and Python 2.5

[Russell Keith-Magee]

The aggregation and aggregation_regress system tests fail due to problems with DateFields and DecimalFields under Windows and Python 2.5

The problem manifests as the following failures:

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FAIL: Doctest: modeltests.aggregation.models.__test__.API_TESTS
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Traceback (most recent call last):
  File "d:\u\kmt\django\aggregation\django\test\_doctest.py", line 2180, in runTest
    raise self.failureException(self.format_failure(new.getvalue()))
AssertionError: Failed doctest test for modeltests.aggregation.models.__test__.API_TESTS
  File "D:\u\kmt\django\aggregation\tests\modeltests\aggregation\models.py", line unknown line number, in API_TESTS

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File "D:\u\kmt\django\aggregation\tests\modeltests\aggregation\models.py", line ?, in modeltests.aggregation.models.__test__.API_TESTS
Failed example:
    Book.objects.filter(pk=1).annotate(mean_age=Avg('authors__age')).values()
Expected:
    [{'rating': 4.5, 'isbn': u'159059725', 'name': u'The Definitive Guide to Django: Web Development Done Right', 'pubdate': datetime.date(2007, 12, 6), 'price': Decimal("30..."), 'id': 1, 'publisher_id': 1, 'pages': 447, 'mean_age': 34.5}]
Got:
    [{'rating': 4.5, 'isbn': u'159059725', 'name': u'The Definitive Guide to Django: Web Development Done Right', 'pubdate': u'2007-12-06', 'price': 30, 'id': 1, 'publisher_id': 1, 'pages': 447, 'mean_age': 34.5}]
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File "D:\u\kmt\django\aggregation\tests\modeltests\aggregation\models.py", line ?, in modeltests.aggregation.models.__test__.API_TESTS
Failed example:
    Book.objects.filter(pk=1).values().annotate(mean_age=Avg('authors__age'))
Expected:
    [{'rating': 4.5, 'isbn': u'159059725', 'name': u'The Definitive Guide to Django: Web Development Done Right', 'pubdate': datetime.date(2007, 12, 6), 'price': Decimal("30..."), 'id': 1, 'publisher_id': 1, 'pages': 447, 'mean_age': 34.5}]
Got:
    [{'rating': 4.5, 'isbn': u'159059725', 'name': u'The Definitive Guide to Django: Web Development Done Right', 'pubdate': u'2007-12-06', 'price': 30, 'id': 1, 'publisher_id': 1, 'pages': 447, 'mean_age': 34.5}]


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FAIL: Doctest: regressiontests.aggregation_regress.models.__test__.API_TESTS
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Traceback (most recent call last):
  File "d:\u\kmt\django\aggregation\django\test\_doctest.py", line 2180, in runTest
    raise self.failureException(self.format_failure(new.getvalue()))
AssertionError: Failed doctest test for regressiontests.aggregation_regress.models.__test__.API_TESTS
  File "D:\u\kmt\django\aggregation\tests\regressiontests\aggregation_regress\models.py", line unknown line number, in API_TESTS

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File "D:\u\kmt\django\aggregation\tests\regressiontests\aggregation_regress\models.py", line ?, in regressiontests.aggregation_regress.models.__test__.API_TESTS
Failed example:
    sorted(Book.objects.all().annotate(mean_auth_age=Avg('authors__age')).extra(select={'manufacture_cost' : 'price * .5'}).get(pk=2).__dict__.items())
Expected:
    [('id', 2), ('isbn', u'067232959'), ('manufacture_cost', ...11.545...), ('mean_auth_age', 45.0), ('name', u'Sams Teach Yourself Django in 24 Hours'), ('pages', 528), ('price', Decimal("23.09")), ('pubdate', datetime.date(2008, 3, 3)), ('publisher_id', 2), ('rating', 3.0)]
Got:
    [('id', 2), ('isbn', u'067232959'), ('manufacture_cost', 11.545), ('mean_auth_age', 45.0), ('name', u'Sams Teach Yourself Django in 24 Hours'), ('pages', 528), ('price', 23.09), ('pubdate', u'2008-03-03'), ('publisher_id', 2), ('rating', 3.0)]
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File "D:\u\kmt\django\aggregation\tests\regressiontests\aggregation_regress\models.py", line ?, in regressiontests.aggregation_regress.models.__test__.API_TESTS
Failed example:
    sorted(Book.objects.all().extra(select={'manufacture_cost' : 'price * .5'}).annotate(mean_auth_age=Avg('authors__age')).get(pk=2).__dict__.items())
Expected:
    [('id', 2), ('isbn', u'067232959'), ('manufacture_cost', ...11.545...), ('mean_auth_age', 45.0), ('name', u'Sams Teach Yourself Django in 24 Hours'), ('pages', 528), ('price', Decimal("23.09")), ('pubdate', datetime.date(2008, 3, 3)), ('publisher_id', 2), ('rating', 3.0)]
Got:
    [('id', 2), ('isbn', u'067232959'), ('manufacture_cost', 11.545), ('mean_auth_age', 45.0), ('name', u'Sams Teach Yourself Django in 24 Hours'), ('pages', 528), ('price', 23.09), ('pubdate', u'2008-03-03'), ('publisher_id', 2), ('rating', 3.0)]
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File "D:\u\kmt\django\aggregation\tests\regressiontests\aggregation_regress\models.py", line ?, in regressiontests.aggregation_regress.models.__test__.API_TESTS
Failed example:
    sorted(Book.objects.all().annotate(mean_auth_age=Avg('authors__age')).extra(select={'manufacture_cost' : 'price * .5'}).values().get(pk=2).items())
Expected:
    [('id', 2), ('isbn', u'067232959'), ('manufacture_cost', ...11.545...), ('mean_auth_age', 45.0), ('name', u'Sams Teach Yourself Django in 24 Hours'), ('pages', 528), ('price', Decimal("23.09")), ('pubdate', datetime.date(2008, 3, 3)), ('publisher_id', 2), ('rating', 3.0)]
Got:
    [('id', 2), ('isbn', u'067232959'), ('manufacture_cost', 11.545), ('mean_auth_age', 45.0), ('name', u'Sams Teach Yourself Django in 24 Hours'), ('pages', 528), ('price', 23.09), ('pubdate', u'2008-03-03'), ('publisher_id', 2), ('rating', 3.0)]
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File "D:\u\kmt\django\aggregation\tests\regressiontests\aggregation_regress\models.py", line ?, in regressiontests.aggregation_regress.models.__test__.API_TESTS
Failed example:
    sorted(Book.objects.all().values().annotate(mean_auth_age=Avg('authors__age')).extra(select={'manufacture_cost' : 'price * .5'}).get(pk=2).items())
Expected:
    [('id', 2), ('isbn', u'067232959'), ('manufacture_cost', ...11.545...), ('mean_auth_age', 45.0), ('name', u'Sams Teach Yourself Django in 24 Hours'), ('pages', 528), ('price', Decimal("23.09")), ('pubdate', datetime.date(2008, 3, 3)), ('publisher_id', 2), ('rating', 3.0)]
Got:
    [('id', 2), ('isbn', u'067232959'), ('manufacture_cost', 11.545), ('mean_auth_age', 45.0), ('name', u'Sams Teach Yourself Django in 24 Hours'), ('pages', 528), ('price', 23.09), ('pubdate', u'2008-03-03'), ('publisher_id', 2), ('rating', 3.0)]
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File "D:\u\kmt\django\aggregation\tests\regressiontests\aggregation_regress\models.py", line ?, in regressiontests.aggregation_regress.models.__test__.API_TESTS
Failed example:
    Book.objects.values('price').annotate(oldest=Max('authors__age')).order_by('oldest', 'price').annotate(Max('publisher__num_awards'))
Expected:
    [{'price': Decimal("30..."), 'oldest': 35, 'publisher__num_awards__max': 3}, {'price': Decimal("29.69"), 'oldest': 37, 'publisher__num_awards__max': 7}, {'price': Decimal("23.09"), 'oldest': 45, 'publisher__num_awards__max': 1}, {'price': Decimal("75..."), 'oldest': 57, 'publisher__num_awards__max': 9}, {'price': Decimal("82.8..."), 'oldest': 57, 'publisher__num_awards__max': 7}]
Got:
    [{'price': 30, 'oldest': 35, 'publisher__num_awards__max': 3}, {'price': 29.690000000000001, 'oldest': 37, 'publisher__num_awards__max': 7}, {'price': 23.09, 'oldest': 45, 'publisher__num_awards__max': 1}, {'price': 75, 'oldest': 57, 'publisher__num_awards__max': 9}, {'price': 82.799999999999997, 'oldest': 57, 'publisher__num_awards__max': 7}]


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This doesn't appear to affect other versions of Python (2.4 or 2.6), or any version of Python on Linux/OS X. Only Win/Py2.5 appears to be affected.