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author | Anssi Kääriäinen <anssi@holvi.com> | 2017-09-21 14:21:12 -0400 |
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committer | Tim Graham <timograham@gmail.com> | 2017-09-21 14:25:42 -0400 |
commit | 771e06af2aacff5d544c3004fa6548749ed81a2a (patch) | |
tree | f8824aa5ac648cec4acb60d2525fdf2d319579ea /tests/select_related | |
parent | d612026c37f85769322a44c0284ca2d2be6b6e5b (diff) | |
download | django-771e06af2aacff5d544c3004fa6548749ed81a2a.tar.gz |
Added a test for QuerySet.select_related() reverse caching.
Diffstat (limited to 'tests/select_related')
-rw-r--r-- | tests/select_related/tests.py | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/tests/select_related/tests.py b/tests/select_related/tests.py index c19984e267..0af10f207f 100644 --- a/tests/select_related/tests.py +++ b/tests/select_related/tests.py @@ -150,6 +150,15 @@ class SelectRelatedTests(TestCase): self.assertEqual(obj.parent_1, parent_1) self.assertEqual(obj.parent_2, parent_2) + def test_reverse_relation_caching(self): + species = Species.objects.select_related('genus').filter(name='melanogaster').first() + with self.assertNumQueries(0): + self.assertEqual(species.genus.name, 'Drosophila') + # The species_set reverse relation isn't cached. + self.assertEqual(species.genus._state.fields_cache, {}) + with self.assertNumQueries(1): + self.assertEqual(species.genus.species_set.first().name, 'melanogaster') + def test_select_related_after_values(self): """ Running select_related() after calling values() raises a TypeError |