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1e6c3368f2
This was recently fixed for one-to-one relations; this patch adds support for foreign keys. Thanks kaiser.yann for the report and the initial version of the patch.
89 lines
3.6 KiB
Python
89 lines
3.6 KiB
Python
from __future__ import absolute_import
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from django.test import TestCase
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from .models import Tournament, Pool, PoolStyle
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class ExistingRelatedInstancesTests(TestCase):
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fixtures = ['tournament.json']
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def test_foreign_key(self):
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with self.assertNumQueries(2):
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tournament = Tournament.objects.get(pk=1)
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pool = tournament.pool_set.all()[0]
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self.assertIs(tournament, pool.tournament)
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def test_foreign_key_prefetch_related(self):
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with self.assertNumQueries(2):
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tournament = (Tournament.objects.prefetch_related('pool_set').get(pk=1))
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pool = tournament.pool_set.all()[0]
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self.assertIs(tournament, pool.tournament)
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def test_foreign_key_multiple_prefetch(self):
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with self.assertNumQueries(2):
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tournaments = list(Tournament.objects.prefetch_related('pool_set'))
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pool1 = tournaments[0].pool_set.all()[0]
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self.assertIs(tournaments[0], pool1.tournament)
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pool2 = tournaments[1].pool_set.all()[0]
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self.assertIs(tournaments[1], pool2.tournament)
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def test_one_to_one(self):
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with self.assertNumQueries(2):
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style = PoolStyle.objects.get(pk=1)
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pool = style.pool
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self.assertIs(style, pool.poolstyle)
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def test_one_to_one_select_related(self):
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with self.assertNumQueries(1):
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style = PoolStyle.objects.select_related('pool').get(pk=1)
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pool = style.pool
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self.assertIs(style, pool.poolstyle)
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def test_one_to_one_multi_select_related(self):
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with self.assertNumQueries(1):
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poolstyles = list(PoolStyle.objects.select_related('pool'))
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self.assertIs(poolstyles[0], poolstyles[0].pool.poolstyle)
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self.assertIs(poolstyles[1], poolstyles[1].pool.poolstyle)
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def test_one_to_one_prefetch_related(self):
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with self.assertNumQueries(2):
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style = PoolStyle.objects.prefetch_related('pool').get(pk=1)
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pool = style.pool
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self.assertIs(style, pool.poolstyle)
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def test_one_to_one_multi_prefetch_related(self):
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with self.assertNumQueries(2):
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poolstyles = list(PoolStyle.objects.prefetch_related('pool'))
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self.assertIs(poolstyles[0], poolstyles[0].pool.poolstyle)
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self.assertIs(poolstyles[1], poolstyles[1].pool.poolstyle)
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def test_reverse_one_to_one(self):
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with self.assertNumQueries(2):
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pool = Pool.objects.get(pk=2)
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style = pool.poolstyle
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self.assertIs(pool, style.pool)
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def test_reverse_one_to_one_select_related(self):
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with self.assertNumQueries(1):
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pool = Pool.objects.select_related('poolstyle').get(pk=2)
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style = pool.poolstyle
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self.assertIs(pool, style.pool)
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def test_reverse_one_to_one_prefetch_related(self):
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with self.assertNumQueries(2):
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pool = Pool.objects.prefetch_related('poolstyle').get(pk=2)
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style = pool.poolstyle
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self.assertIs(pool, style.pool)
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def test_reverse_one_to_one_multi_select_related(self):
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with self.assertNumQueries(1):
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pools = list(Pool.objects.select_related('poolstyle'))
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self.assertIs(pools[1], pools[1].poolstyle.pool)
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self.assertIs(pools[2], pools[2].poolstyle.pool)
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def test_reverse_one_to_one_multi_prefetch_related(self):
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with self.assertNumQueries(2):
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pools = list(Pool.objects.prefetch_related('poolstyle'))
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self.assertIs(pools[1], pools[1].poolstyle.pool)
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self.assertIs(pools[2], pools[2].poolstyle.pool)
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