438 lines
16 KiB
Python
438 lines
16 KiB
Python
import datetime
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from collections import OrderedDict
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from django.contrib.auth.models import User
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from django.test import TestCase
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from .models import Order, RevisionableModel, TestObject
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class ExtraRegressTests(TestCase):
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def setUp(self):
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self.u = User.objects.create_user(
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username="fred",
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password="secret",
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email="fred@example.com"
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)
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def test_regression_7314_7372(self):
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"""
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Regression tests for #7314 and #7372
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"""
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rm = RevisionableModel.objects.create(
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title='First Revision',
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when=datetime.datetime(2008, 9, 28, 10, 30, 0)
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)
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self.assertEqual(rm.pk, rm.base.pk)
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rm2 = rm.new_revision()
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rm2.title = "Second Revision"
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rm.when = datetime.datetime(2008, 9, 28, 14, 25, 0)
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rm2.save()
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self.assertEqual(rm2.title, 'Second Revision')
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self.assertEqual(rm2.base.title, 'First Revision')
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self.assertNotEqual(rm2.pk, rm.pk)
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self.assertEqual(rm2.base.pk, rm.pk)
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# Queryset to match most recent revision:
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qs = RevisionableModel.objects.extra(
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where=["%(table)s.id IN (SELECT MAX(rev.id) FROM %(table)s rev GROUP BY rev.base_id)" % {
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'table': RevisionableModel._meta.db_table,
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}]
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)
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self.assertQuerysetEqual(
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qs, [('Second Revision', 'First Revision')],
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transform=lambda r: (r.title, r.base.title)
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)
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# Queryset to search for string in title:
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qs2 = RevisionableModel.objects.filter(title__contains="Revision")
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self.assertQuerysetEqual(
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qs2, [
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('First Revision', 'First Revision'),
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('Second Revision', 'First Revision'),
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],
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transform=lambda r: (r.title, r.base.title),
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ordered=False
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)
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# Following queryset should return the most recent revision:
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self.assertQuerysetEqual(
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qs & qs2,
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[('Second Revision', 'First Revision')],
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transform=lambda r: (r.title, r.base.title),
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ordered=False
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)
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def test_extra_stay_tied(self):
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# Extra select parameters should stay tied to their corresponding
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# select portions. Applies when portions are updated or otherwise
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# moved around.
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qs = User.objects.extra(
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select=OrderedDict((("alpha", "%s"), ("beta", "2"), ("gamma", "%s"))),
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select_params=(1, 3)
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)
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qs = qs.extra(select={"beta": 4})
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qs = qs.extra(select={"alpha": "%s"}, select_params=[5])
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self.assertEqual(
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list(qs.filter(id=self.u.id).values('alpha', 'beta', 'gamma')),
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[{'alpha': 5, 'beta': 4, 'gamma': 3}]
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)
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def test_regression_7957(self):
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"""
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Regression test for #7957: Combining extra() calls should leave the
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corresponding parameters associated with the right extra() bit. I.e.
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internal dictionary must remain sorted.
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"""
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self.assertEqual(
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(User.objects
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.extra(select={"alpha": "%s"}, select_params=(1,))
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.extra(select={"beta": "%s"}, select_params=(2,))[0].alpha),
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1
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)
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self.assertEqual(
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(User.objects
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.extra(select={"beta": "%s"}, select_params=(1,))
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.extra(select={"alpha": "%s"}, select_params=(2,))[0].alpha),
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2
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)
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def test_regression_7961(self):
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"""
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Regression test for #7961: When not using a portion of an
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extra(...) in a query, remove any corresponding parameters from the
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query as well.
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"""
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self.assertEqual(
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list(User.objects.extra(select={"alpha": "%s"}, select_params=(-6,))
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.filter(id=self.u.id).values_list('id', flat=True)),
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[self.u.id]
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)
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def test_regression_8063(self):
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"""
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Regression test for #8063: limiting a query shouldn't discard any
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extra() bits.
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"""
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qs = User.objects.all().extra(where=['id=%s'], params=[self.u.id])
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self.assertQuerysetEqual(qs, ['<User: fred>'])
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self.assertQuerysetEqual(qs[:1], ['<User: fred>'])
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def test_regression_8039(self):
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"""
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Regression test for #8039: Ordering sometimes removed relevant tables
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from extra(). This test is the critical case: ordering uses a table,
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but then removes the reference because of an optimization. The table
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should still be present because of the extra() call.
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"""
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self.assertQuerysetEqual(
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(Order.objects
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.extra(where=["username=%s"], params=["fred"], tables=["auth_user"])
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.order_by('created_by')),
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[]
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)
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def test_regression_8819(self):
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"""
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Regression test for #8819: Fields in the extra(select=...) list
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should be available to extra(order_by=...).
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"""
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self.assertQuerysetEqual(
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User.objects.filter(pk=self.u.id).extra(select={'extra_field': 1}).distinct(),
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['<User: fred>']
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)
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self.assertQuerysetEqual(
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User.objects.filter(pk=self.u.id).extra(select={'extra_field': 1}, order_by=['extra_field']),
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['<User: fred>']
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)
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self.assertQuerysetEqual(
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User.objects.filter(pk=self.u.id).extra(select={'extra_field': 1}, order_by=['extra_field']).distinct(),
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['<User: fred>']
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)
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def test_dates_query(self):
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"""
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When calling the dates() method on a queryset with extra selection
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columns, we can (and should) ignore those columns. They don't change
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the result and cause incorrect SQL to be produced otherwise.
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"""
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RevisionableModel.objects.create(
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title='First Revision',
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when=datetime.datetime(2008, 9, 28, 10, 30, 0)
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)
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self.assertSequenceEqual(
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RevisionableModel.objects.extra(select={"the_answer": 'id'}).datetimes('when', 'month'),
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[datetime.datetime(2008, 9, 1, 0, 0)],
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)
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def test_values_with_extra(self):
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"""
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Regression test for #10256... If there is a values() clause, Extra
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columns are only returned if they are explicitly mentioned.
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"""
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obj = TestObject(first='first', second='second', third='third')
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obj.save()
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self.assertEqual(
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list(
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TestObject.objects
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.extra(select=OrderedDict((('foo', 'first'), ('bar', 'second'), ('whiz', 'third'))))
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.values()
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),
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[{
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'bar': 'second', 'third': 'third', 'second': 'second', 'whiz': 'third', 'foo': 'first',
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'id': obj.pk, 'first': 'first'
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}]
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)
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# Extra clauses after an empty values clause are still included
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self.assertEqual(
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list(
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TestObject.objects
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.values()
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.extra(select=OrderedDict((('foo', 'first'), ('bar', 'second'), ('whiz', 'third'))))
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),
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[{
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'bar': 'second', 'third': 'third', 'second': 'second', 'whiz': 'third', 'foo': 'first',
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'id': obj.pk, 'first': 'first'
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}]
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)
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# Extra columns are ignored if not mentioned in the values() clause
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self.assertEqual(
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list(
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TestObject.objects
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.extra(select=OrderedDict((('foo', 'first'), ('bar', 'second'), ('whiz', 'third'))))
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.values('first', 'second')
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),
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[{'second': 'second', 'first': 'first'}]
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)
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# Extra columns after a non-empty values() clause are ignored
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self.assertEqual(
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list(
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TestObject.objects
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.values('first', 'second')
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.extra(select=OrderedDict((('foo', 'first'), ('bar', 'second'), ('whiz', 'third'))))
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),
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[{'second': 'second', 'first': 'first'}]
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)
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# Extra columns can be partially returned
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self.assertEqual(
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list(
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TestObject.objects
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.extra(select=OrderedDict((('foo', 'first'), ('bar', 'second'), ('whiz', 'third'))))
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.values('first', 'second', 'foo')
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),
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[{'second': 'second', 'foo': 'first', 'first': 'first'}]
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)
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# Also works if only extra columns are included
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self.assertEqual(
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list(
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TestObject.objects
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.extra(select=OrderedDict((('foo', 'first'), ('bar', 'second'), ('whiz', 'third'))))
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.values('foo', 'whiz')
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),
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[{'foo': 'first', 'whiz': 'third'}]
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)
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# Values list works the same way
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# All columns are returned for an empty values_list()
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self.assertEqual(
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list(
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TestObject.objects
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.extra(select=OrderedDict((('foo', 'first'), ('bar', 'second'), ('whiz', 'third'))))
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.values_list()
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),
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[('first', 'second', 'third', obj.pk, 'first', 'second', 'third')]
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)
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# Extra columns after an empty values_list() are still included
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self.assertEqual(
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list(
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TestObject.objects
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.values_list()
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.extra(select=OrderedDict((('foo', 'first'), ('bar', 'second'), ('whiz', 'third'))))
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),
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[('first', 'second', 'third', obj.pk, 'first', 'second', 'third')]
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)
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# Extra columns ignored completely if not mentioned in values_list()
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self.assertEqual(
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list(
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TestObject.objects
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.extra(select=OrderedDict((('foo', 'first'), ('bar', 'second'), ('whiz', 'third'))))
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.values_list('first', 'second')
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),
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[('first', 'second')]
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)
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# Extra columns after a non-empty values_list() clause are ignored completely
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self.assertEqual(
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list(
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TestObject.objects
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.values_list('first', 'second')
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.extra(select=OrderedDict((('foo', 'first'), ('bar', 'second'), ('whiz', 'third'))))
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),
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[('first', 'second')]
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)
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self.assertEqual(
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list(
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TestObject.objects
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.extra(select=OrderedDict((('foo', 'first'), ('bar', 'second'), ('whiz', 'third'))))
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.values_list('second', flat=True)
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),
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['second']
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)
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# Only the extra columns specified in the values_list() are returned
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self.assertEqual(
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list(
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TestObject.objects
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.extra(select=OrderedDict((('foo', 'first'), ('bar', 'second'), ('whiz', 'third'))))
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.values_list('first', 'second', 'whiz')
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),
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[('first', 'second', 'third')]
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)
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# ...also works if only extra columns are included
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self.assertEqual(
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list(
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TestObject.objects
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.extra(select=OrderedDict((('foo', 'first'), ('bar', 'second'), ('whiz', 'third'))))
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.values_list('foo', 'whiz')
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),
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[('first', 'third')]
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)
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self.assertEqual(
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list(
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TestObject.objects
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.extra(select=OrderedDict((('foo', 'first'), ('bar', 'second'), ('whiz', 'third'))))
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.values_list('whiz', flat=True)
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),
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['third']
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)
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# ... and values are returned in the order they are specified
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self.assertEqual(
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list(
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TestObject.objects
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.extra(select=OrderedDict((('foo', 'first'), ('bar', 'second'), ('whiz', 'third'))))
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.values_list('whiz', 'foo')
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),
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[('third', 'first')]
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)
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self.assertEqual(
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list(
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TestObject.objects
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.extra(select=OrderedDict((('foo', 'first'), ('bar', 'second'), ('whiz', 'third'))))
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.values_list('first', 'id')
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),
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[('first', obj.pk)]
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)
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self.assertEqual(
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list(
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TestObject.objects
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.extra(select=OrderedDict((('foo', 'first'), ('bar', 'second'), ('whiz', 'third'))))
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.values_list('whiz', 'first', 'bar', 'id')
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),
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[('third', 'first', 'second', obj.pk)]
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)
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def test_regression_10847(self):
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"""
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Regression for #10847: the list of extra columns can always be
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accurately evaluated. Using an inner query ensures that as_sql() is
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producing correct output without requiring full evaluation and
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execution of the inner query.
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"""
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obj = TestObject(first='first', second='second', third='third')
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obj.save()
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self.assertEqual(
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list(TestObject.objects.extra(select={'extra': 1}).values('pk')),
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[{'pk': obj.pk}]
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)
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self.assertQuerysetEqual(
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TestObject.objects.filter(
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pk__in=TestObject.objects.extra(select={'extra': 1}).values('pk')
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),
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['<TestObject: TestObject: first,second,third>']
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)
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self.assertEqual(
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list(TestObject.objects.values('pk').extra(select={'extra': 1})),
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[{'pk': obj.pk}]
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)
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self.assertQuerysetEqual(
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TestObject.objects.filter(
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pk__in=TestObject.objects.values('pk').extra(select={'extra': 1})
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),
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['<TestObject: TestObject: first,second,third>']
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)
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self.assertQuerysetEqual(
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TestObject.objects.filter(pk=obj.pk) | TestObject.objects.extra(where=["id > %s"], params=[obj.pk]),
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['<TestObject: TestObject: first,second,third>']
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)
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def test_regression_17877(self):
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"""
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Extra WHERE clauses get correctly ANDed, even when they
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contain OR operations.
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"""
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# Test Case 1: should appear in queryset.
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t = TestObject(first='a', second='a', third='a')
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t.save()
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# Test Case 2: should appear in queryset.
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t = TestObject(first='b', second='a', third='a')
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t.save()
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# Test Case 3: should not appear in queryset, bug case.
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t = TestObject(first='a', second='a', third='b')
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t.save()
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# Test Case 4: should not appear in queryset.
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t = TestObject(first='b', second='a', third='b')
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t.save()
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# Test Case 5: should not appear in queryset.
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t = TestObject(first='b', second='b', third='a')
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t.save()
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# Test Case 6: should not appear in queryset, bug case.
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t = TestObject(first='a', second='b', third='b')
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t.save()
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self.assertQuerysetEqual(
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TestObject.objects.extra(
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where=["first = 'a' OR second = 'a'", "third = 'a'"],
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),
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['<TestObject: TestObject: a,a,a>', '<TestObject: TestObject: b,a,a>'],
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ordered=False
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)
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def test_extra_values_distinct_ordering(self):
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t1 = TestObject.objects.create(first='a', second='a', third='a')
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t2 = TestObject.objects.create(first='a', second='b', third='b')
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qs = TestObject.objects.extra(
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select={'second_extra': 'second'}
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).values_list('id', flat=True).distinct()
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self.assertSequenceEqual(qs.order_by('second_extra'), [t1.pk, t2.pk])
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self.assertSequenceEqual(qs.order_by('-second_extra'), [t2.pk, t1.pk])
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# Note: the extra ordering must appear in select clause, so we get two
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# non-distinct results here (this is on purpose, see #7070).
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# Extra select doesn't appear in result values.
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self.assertSequenceEqual(qs.order_by('-second_extra').values_list('first'), [('a',), ('a',)])
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