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119 lines
4.8 KiB
Python
119 lines
4.8 KiB
Python
from django.test import TestCase
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from .models import Flea, House, Person, Pet, Room
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class UUIDPrefetchRelated(TestCase):
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def test_prefetch_related_from_uuid_model(self):
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Pet.objects.create(name="Fifi").people.add(
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Person.objects.create(name="Ellen"),
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Person.objects.create(name="George"),
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)
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with self.assertNumQueries(2):
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pet = Pet.objects.prefetch_related("people").get(name="Fifi")
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with self.assertNumQueries(0):
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self.assertEqual(2, len(pet.people.all()))
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def test_prefetch_related_to_uuid_model(self):
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Person.objects.create(name="Bella").pets.add(
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Pet.objects.create(name="Socks"),
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Pet.objects.create(name="Coffee"),
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)
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with self.assertNumQueries(2):
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person = Person.objects.prefetch_related("pets").get(name="Bella")
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with self.assertNumQueries(0):
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self.assertEqual(2, len(person.pets.all()))
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def test_prefetch_related_from_uuid_model_to_uuid_model(self):
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fleas = [Flea.objects.create() for i in range(3)]
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Pet.objects.create(name="Fifi").fleas_hosted.add(*fleas)
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Pet.objects.create(name="Bobo").fleas_hosted.add(*fleas)
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with self.assertNumQueries(2):
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pet = Pet.objects.prefetch_related("fleas_hosted").get(name="Fifi")
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with self.assertNumQueries(0):
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self.assertEqual(3, len(pet.fleas_hosted.all()))
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with self.assertNumQueries(2):
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flea = Flea.objects.prefetch_related("pets_visited").get(pk=fleas[0].pk)
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with self.assertNumQueries(0):
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self.assertEqual(2, len(flea.pets_visited.all()))
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def test_prefetch_related_from_uuid_model_to_uuid_model_with_values_flat(self):
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pet = Pet.objects.create(name="Fifi")
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pet.people.add(
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Person.objects.create(name="Ellen"),
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Person.objects.create(name="George"),
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)
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self.assertSequenceEqual(
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Pet.objects.prefetch_related("fleas_hosted").values_list("id", flat=True),
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[pet.id],
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)
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class UUIDPrefetchRelatedLookups(TestCase):
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@classmethod
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def setUpTestData(cls):
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house = House.objects.create(name="Redwood", address="Arcata")
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room = Room.objects.create(name="Racoon", house=house)
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fleas = [Flea.objects.create(current_room=room) for i in range(3)]
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pet = Pet.objects.create(name="Spooky")
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pet.fleas_hosted.add(*fleas)
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person = Person.objects.create(name="Bob")
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person.houses.add(house)
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person.pets.add(pet)
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person.fleas_hosted.add(*fleas)
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def test_from_uuid_pk_lookup_uuid_pk_integer_pk(self):
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# From uuid-pk model, prefetch <uuid-pk model>.<integer-pk model>:
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with self.assertNumQueries(4):
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spooky = Pet.objects.prefetch_related(
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"fleas_hosted__current_room__house"
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).get(name="Spooky")
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with self.assertNumQueries(0):
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self.assertEqual("Racoon", spooky.fleas_hosted.all()[0].current_room.name)
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def test_from_uuid_pk_lookup_integer_pk2_uuid_pk2(self):
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# From uuid-pk model, prefetch
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# <integer-pk model>.<integer-pk model>.<uuid-pk model>.<uuid-pk model>:
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with self.assertNumQueries(5):
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spooky = Pet.objects.prefetch_related("people__houses__rooms__fleas").get(
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name="Spooky"
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)
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with self.assertNumQueries(0):
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self.assertEqual(
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3,
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len(spooky.people.all()[0].houses.all()[0].rooms.all()[0].fleas.all()),
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)
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def test_from_integer_pk_lookup_uuid_pk_integer_pk(self):
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# From integer-pk model, prefetch <uuid-pk model>.<integer-pk model>:
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with self.assertNumQueries(3):
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racoon = Room.objects.prefetch_related("fleas__people_visited").get(
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name="Racoon"
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)
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with self.assertNumQueries(0):
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self.assertEqual("Bob", racoon.fleas.all()[0].people_visited.all()[0].name)
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def test_from_integer_pk_lookup_integer_pk_uuid_pk(self):
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# From integer-pk model, prefetch <integer-pk model>.<uuid-pk model>:
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with self.assertNumQueries(3):
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redwood = House.objects.prefetch_related("rooms__fleas").get(name="Redwood")
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with self.assertNumQueries(0):
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self.assertEqual(3, len(redwood.rooms.all()[0].fleas.all()))
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def test_from_integer_pk_lookup_integer_pk_uuid_pk_uuid_pk(self):
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# From integer-pk model, prefetch
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# <integer-pk model>.<uuid-pk model>.<uuid-pk model>:
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with self.assertNumQueries(4):
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redwood = House.objects.prefetch_related("rooms__fleas__pets_visited").get(
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name="Redwood"
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)
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with self.assertNumQueries(0):
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self.assertEqual(
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"Spooky",
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redwood.rooms.all()[0].fleas.all()[0].pets_visited.all()[0].name,
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)
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