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django/tests/regressiontests/null_queries/tests.py
Aymeric Augustin e74e207cce Fixed #17260 -- Added time zone aware aggregation and lookups.
Thanks Carl Meyer for the review.

Squashed commit of the following:

commit 4f290bdb60
Author: Aymeric Augustin <aymeric.augustin@m4x.org>
Date:   Wed Feb 13 21:21:30 2013 +0100

    Used '0:00' instead of 'UTC' which doesn't always exist in Oracle.

    Thanks Ian Kelly for the suggestion.

commit 01b6366f3c
Author: Aymeric Augustin <aymeric.augustin@m4x.org>
Date:   Wed Feb 13 13:38:43 2013 +0100

    Made tzname a parameter of datetime_extract/trunc_sql.

    This is required to work around a bug in Oracle.

commit 924a144ef8
Author: Aymeric Augustin <aymeric.augustin@m4x.org>
Date:   Wed Feb 13 14:47:44 2013 +0100

    Added support for parameters in SELECT clauses.

commit b4351d2890
Author: Aymeric Augustin <aymeric.augustin@m4x.org>
Date:   Mon Feb 11 22:30:22 2013 +0100

    Documented backwards incompatibilities in the two previous commits.

commit 91ef84713c
Author: Aymeric Augustin <aymeric.augustin@m4x.org>
Date:   Mon Feb 11 09:42:31 2013 +0100

    Used QuerySet.datetimes for the admin's date_hierarchy.

commit 0d0de288a5
Author: Aymeric Augustin <aymeric.augustin@m4x.org>
Date:   Mon Feb 11 09:29:38 2013 +0100

    Used QuerySet.datetimes in date-based generic views.

commit 9c0859ff7c
Author: Aymeric Augustin <aymeric.augustin@m4x.org>
Date:   Sun Feb 10 21:43:25 2013 +0100

    Implemented QuerySet.datetimes on Oracle.

commit 68ab511a4f
Author: Aymeric Augustin <aymeric.augustin@m4x.org>
Date:   Sun Feb 10 21:43:14 2013 +0100

    Implemented QuerySet.datetimes on MySQL.

commit 22d52681d3
Author: Aymeric Augustin <aymeric.augustin@m4x.org>
Date:   Sun Feb 10 21:42:29 2013 +0100

    Implemented QuerySet.datetimes on SQLite.

commit f6800fd04c
Author: Aymeric Augustin <aymeric.augustin@m4x.org>
Date:   Sun Feb 10 21:43:03 2013 +0100

    Implemented QuerySet.datetimes on PostgreSQL.

commit 0c829c23f4
Author: Aymeric Augustin <aymeric.augustin@m4x.org>
Date:   Sun Feb 10 21:41:08 2013 +0100

    Added datetime-handling infrastructure in the ORM layers.

commit 104d82a777
Author: Aymeric Augustin <aymeric.augustin@m4x.org>
Date:   Mon Feb 11 10:05:55 2013 +0100

    Updated null_queries tests to avoid clashing with the __second lookup.

commit c01bbb3235
Author: Aymeric Augustin <aymeric.augustin@m4x.org>
Date:   Sun Feb 10 23:07:41 2013 +0100

    Updated tests of .dates().

    Replaced .dates() by .datetimes() for DateTimeFields.
    Replaced dates with datetimes in the expected output for DateFields.

commit 50fb7a5246
Author: Aymeric Augustin <aymeric.augustin@m4x.org>
Date:   Sun Feb 10 21:40:09 2013 +0100

    Updated and added tests for QuerySet.datetimes.

commit a8451a5004
Author: Aymeric Augustin <aymeric.augustin@m4x.org>
Date:   Sun Feb 10 22:34:46 2013 +0100

    Documented the new time lookups and updated the date lookups.

commit 29413eab2b
Author: Aymeric Augustin <aymeric.augustin@m4x.org>
Date:   Sun Feb 10 16:15:49 2013 +0100

    Documented QuerySet.datetimes and updated QuerySet.dates.
2013-02-16 09:19:04 +01:00

84 lines
2.9 KiB
Python

from __future__ import absolute_import
from django.test import TestCase
from django.core.exceptions import FieldError
from .models import Poll, Choice, OuterA, Inner, OuterB
class NullQueriesTests(TestCase):
def test_none_as_null(self):
"""
Regression test for the use of None as a query value.
None is interpreted as an SQL NULL, but only in __exact queries.
Set up some initial polls and choices
"""
p1 = Poll(question='Why?')
p1.save()
c1 = Choice(poll=p1, choice='Because.')
c1.save()
c2 = Choice(poll=p1, choice='Why Not?')
c2.save()
# Exact query with value None returns nothing ("is NULL" in sql,
# but every 'id' field has a value).
self.assertQuerysetEqual(Choice.objects.filter(choice__exact=None), [])
# Excluding the previous result returns everything.
self.assertQuerysetEqual(
Choice.objects.exclude(choice=None).order_by('id'),
[
'<Choice: Choice: Because. in poll Q: Why? >',
'<Choice: Choice: Why Not? in poll Q: Why? >'
]
)
# Valid query, but fails because foo isn't a keyword
self.assertRaises(FieldError, Choice.objects.filter, foo__exact=None)
# Can't use None on anything other than __exact
self.assertRaises(ValueError, Choice.objects.filter, id__gt=None)
# Can't use None on anything other than __exact
self.assertRaises(ValueError, Choice.objects.filter, foo__gt=None)
# Related managers use __exact=None implicitly if the object hasn't been saved.
p2 = Poll(question="How?")
self.assertEqual(repr(p2.choice_set.all()), '[]')
def test_reverse_relations(self):
"""
Querying across reverse relations and then another relation should
insert outer joins correctly so as not to exclude results.
"""
obj = OuterA.objects.create()
self.assertQuerysetEqual(
OuterA.objects.filter(inner__third=None),
['<OuterA: OuterA object>']
)
self.assertQuerysetEqual(
OuterA.objects.filter(inner__third__data=None),
['<OuterA: OuterA object>']
)
inner_obj = Inner.objects.create(first=obj)
self.assertQuerysetEqual(
Inner.objects.filter(first__inner__third=None),
['<Inner: Inner object>']
)
# Ticket #13815: check if <reverse>_isnull=False does not produce
# faulty empty lists
objB = OuterB.objects.create(data="reverse")
self.assertQuerysetEqual(
OuterB.objects.filter(inner__isnull=False),
[]
)
Inner.objects.create(first=obj)
self.assertQuerysetEqual(
OuterB.objects.exclude(inner__isnull=False),
['<OuterB: OuterB object>']
)