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321 lines
12 KiB
Python
321 lines
12 KiB
Python
import json
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import uuid
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from django.core import exceptions, serializers
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from django.db import IntegrityError, connection, models
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from django.db.models import CharField, F, Value
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from django.db.models.functions import Concat, Repeat
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from django.test import (
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SimpleTestCase, TestCase, TransactionTestCase, skipUnlessDBFeature,
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)
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from .models import (
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NullableUUIDModel, PrimaryKeyUUIDModel, RelatedToUUIDModel, UUIDGrandchild,
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UUIDModel,
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)
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class TestSaveLoad(TestCase):
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def test_uuid_instance(self):
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instance = UUIDModel.objects.create(field=uuid.uuid4())
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loaded = UUIDModel.objects.get()
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self.assertEqual(loaded.field, instance.field)
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def test_str_instance_no_hyphens(self):
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UUIDModel.objects.create(field='550e8400e29b41d4a716446655440000')
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loaded = UUIDModel.objects.get()
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self.assertEqual(loaded.field, uuid.UUID('550e8400e29b41d4a716446655440000'))
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def test_str_instance_hyphens(self):
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UUIDModel.objects.create(field='550e8400-e29b-41d4-a716-446655440000')
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loaded = UUIDModel.objects.get()
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self.assertEqual(loaded.field, uuid.UUID('550e8400e29b41d4a716446655440000'))
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def test_str_instance_bad_hyphens(self):
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UUIDModel.objects.create(field='550e84-00-e29b-41d4-a716-4-466-55440000')
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loaded = UUIDModel.objects.get()
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self.assertEqual(loaded.field, uuid.UUID('550e8400e29b41d4a716446655440000'))
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def test_null_handling(self):
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NullableUUIDModel.objects.create(field=None)
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loaded = NullableUUIDModel.objects.get()
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self.assertIsNone(loaded.field)
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def test_pk_validated(self):
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with self.assertRaisesMessage(exceptions.ValidationError, 'is not a valid UUID'):
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PrimaryKeyUUIDModel.objects.get(pk={})
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with self.assertRaisesMessage(exceptions.ValidationError, 'is not a valid UUID'):
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PrimaryKeyUUIDModel.objects.get(pk=[])
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def test_wrong_value(self):
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with self.assertRaisesMessage(exceptions.ValidationError, 'is not a valid UUID'):
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UUIDModel.objects.get(field='not-a-uuid')
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with self.assertRaisesMessage(exceptions.ValidationError, 'is not a valid UUID'):
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UUIDModel.objects.create(field='not-a-uuid')
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class TestMethods(SimpleTestCase):
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def test_deconstruct(self):
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field = models.UUIDField()
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name, path, args, kwargs = field.deconstruct()
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self.assertEqual(kwargs, {})
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def test_to_python(self):
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self.assertIsNone(models.UUIDField().to_python(None))
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def test_to_python_int_values(self):
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self.assertEqual(
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models.UUIDField().to_python(0),
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uuid.UUID('00000000-0000-0000-0000-000000000000')
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)
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# Works for integers less than 128 bits.
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self.assertEqual(
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models.UUIDField().to_python((2 ** 128) - 1),
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uuid.UUID('ffffffff-ffff-ffff-ffff-ffffffffffff')
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)
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def test_to_python_int_too_large(self):
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# Fails for integers larger than 128 bits.
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with self.assertRaises(exceptions.ValidationError):
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models.UUIDField().to_python(2 ** 128)
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class TestQuerying(TestCase):
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@classmethod
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def setUpTestData(cls):
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cls.objs = [
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NullableUUIDModel.objects.create(
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field=uuid.UUID('25d405be-4895-4d50-9b2e-d6695359ce47'),
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),
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NullableUUIDModel.objects.create(field='550e8400e29b41d4a716446655440000'),
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NullableUUIDModel.objects.create(field=None),
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]
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def assertSequenceEqualWithoutHyphens(self, qs, result):
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"""
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Backends with a native datatype for UUID don't support fragment lookups
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without hyphens because they store values with them.
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"""
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self.assertSequenceEqual(
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qs,
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[] if connection.features.has_native_uuid_field else result,
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)
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def test_exact(self):
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self.assertSequenceEqual(
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NullableUUIDModel.objects.filter(field__exact='550e8400e29b41d4a716446655440000'),
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[self.objs[1]]
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)
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self.assertSequenceEqual(
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NullableUUIDModel.objects.filter(
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field__exact='550e8400-e29b-41d4-a716-446655440000'
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),
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[self.objs[1]],
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)
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def test_iexact(self):
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self.assertSequenceEqualWithoutHyphens(
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NullableUUIDModel.objects.filter(
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field__iexact='550E8400E29B41D4A716446655440000'
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),
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[self.objs[1]],
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)
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self.assertSequenceEqual(
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NullableUUIDModel.objects.filter(
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field__iexact='550E8400-E29B-41D4-A716-446655440000'
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),
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[self.objs[1]],
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)
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def test_isnull(self):
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self.assertSequenceEqual(
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NullableUUIDModel.objects.filter(field__isnull=True),
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[self.objs[2]]
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)
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def test_contains(self):
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self.assertSequenceEqualWithoutHyphens(
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NullableUUIDModel.objects.filter(field__contains='8400e29b'),
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[self.objs[1]],
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)
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self.assertSequenceEqual(
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NullableUUIDModel.objects.filter(field__contains='8400-e29b'),
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[self.objs[1]],
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)
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def test_icontains(self):
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self.assertSequenceEqualWithoutHyphens(
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NullableUUIDModel.objects.filter(field__icontains='8400E29B'),
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[self.objs[1]],
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)
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self.assertSequenceEqual(
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NullableUUIDModel.objects.filter(field__icontains='8400-E29B'),
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[self.objs[1]],
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)
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def test_startswith(self):
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self.assertSequenceEqualWithoutHyphens(
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NullableUUIDModel.objects.filter(field__startswith='550e8400e29b4'),
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[self.objs[1]],
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)
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self.assertSequenceEqual(
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NullableUUIDModel.objects.filter(field__startswith='550e8400-e29b-4'),
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[self.objs[1]],
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)
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def test_istartswith(self):
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self.assertSequenceEqualWithoutHyphens(
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NullableUUIDModel.objects.filter(field__istartswith='550E8400E29B4'),
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[self.objs[1]],
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)
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self.assertSequenceEqual(
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NullableUUIDModel.objects.filter(field__istartswith='550E8400-E29B-4'),
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[self.objs[1]],
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)
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def test_endswith(self):
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self.assertSequenceEqualWithoutHyphens(
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NullableUUIDModel.objects.filter(field__endswith='a716446655440000'),
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[self.objs[1]],
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)
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self.assertSequenceEqual(
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NullableUUIDModel.objects.filter(field__endswith='a716-446655440000'),
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[self.objs[1]],
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)
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def test_iendswith(self):
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self.assertSequenceEqualWithoutHyphens(
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NullableUUIDModel.objects.filter(field__iendswith='A716446655440000'),
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[self.objs[1]],
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)
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self.assertSequenceEqual(
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NullableUUIDModel.objects.filter(field__iendswith='A716-446655440000'),
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[self.objs[1]],
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)
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def test_filter_with_expr(self):
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self.assertSequenceEqualWithoutHyphens(
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NullableUUIDModel.objects.annotate(
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value=Concat(Value('8400'), Value('e29b'), output_field=CharField()),
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).filter(field__contains=F('value')),
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[self.objs[1]],
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)
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self.assertSequenceEqual(
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NullableUUIDModel.objects.annotate(
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value=Concat(Value('8400'), Value('-'), Value('e29b'), output_field=CharField()),
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).filter(field__contains=F('value')),
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[self.objs[1]],
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)
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self.assertSequenceEqual(
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NullableUUIDModel.objects.annotate(
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value=Repeat(Value('0'), 4, output_field=CharField()),
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).filter(field__contains=F('value')),
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[self.objs[1]],
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)
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class TestSerialization(SimpleTestCase):
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test_data = (
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'[{"fields": {"field": "550e8400-e29b-41d4-a716-446655440000"}, '
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'"model": "model_fields.uuidmodel", "pk": null}]'
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)
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nullable_test_data = (
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'[{"fields": {"field": null}, '
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'"model": "model_fields.nullableuuidmodel", "pk": null}]'
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)
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def test_dumping(self):
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instance = UUIDModel(field=uuid.UUID('550e8400e29b41d4a716446655440000'))
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data = serializers.serialize('json', [instance])
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self.assertEqual(json.loads(data), json.loads(self.test_data))
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def test_loading(self):
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instance = list(serializers.deserialize('json', self.test_data))[0].object
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self.assertEqual(instance.field, uuid.UUID('550e8400-e29b-41d4-a716-446655440000'))
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def test_nullable_loading(self):
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instance = list(serializers.deserialize('json', self.nullable_test_data))[0].object
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self.assertIsNone(instance.field)
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class TestValidation(SimpleTestCase):
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def test_invalid_uuid(self):
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field = models.UUIDField()
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with self.assertRaises(exceptions.ValidationError) as cm:
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field.clean('550e8400', None)
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self.assertEqual(cm.exception.code, 'invalid')
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self.assertEqual(cm.exception.message % cm.exception.params, '“550e8400” is not a valid UUID.')
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def test_uuid_instance_ok(self):
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field = models.UUIDField()
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field.clean(uuid.uuid4(), None) # no error
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class TestAsPrimaryKey(TestCase):
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def test_creation(self):
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PrimaryKeyUUIDModel.objects.create()
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loaded = PrimaryKeyUUIDModel.objects.get()
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self.assertIsInstance(loaded.pk, uuid.UUID)
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def test_uuid_pk_on_save(self):
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saved = PrimaryKeyUUIDModel.objects.create(id=None)
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loaded = PrimaryKeyUUIDModel.objects.get()
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self.assertIsNotNone(loaded.id, None)
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self.assertEqual(loaded.id, saved.id)
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def test_uuid_pk_on_bulk_create(self):
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u1 = PrimaryKeyUUIDModel()
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u2 = PrimaryKeyUUIDModel(id=None)
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PrimaryKeyUUIDModel.objects.bulk_create([u1, u2])
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# The two objects were correctly created.
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u1_found = PrimaryKeyUUIDModel.objects.filter(id=u1.id).exists()
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u2_found = PrimaryKeyUUIDModel.objects.exclude(id=u1.id).exists()
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self.assertTrue(u1_found)
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self.assertTrue(u2_found)
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self.assertEqual(PrimaryKeyUUIDModel.objects.count(), 2)
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def test_underlying_field(self):
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pk_model = PrimaryKeyUUIDModel.objects.create()
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RelatedToUUIDModel.objects.create(uuid_fk=pk_model)
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related = RelatedToUUIDModel.objects.get()
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self.assertEqual(related.uuid_fk.pk, related.uuid_fk_id)
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def test_update_with_related_model_instance(self):
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# regression for #24611
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u1 = PrimaryKeyUUIDModel.objects.create()
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u2 = PrimaryKeyUUIDModel.objects.create()
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r = RelatedToUUIDModel.objects.create(uuid_fk=u1)
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RelatedToUUIDModel.objects.update(uuid_fk=u2)
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r.refresh_from_db()
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self.assertEqual(r.uuid_fk, u2)
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def test_update_with_related_model_id(self):
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u1 = PrimaryKeyUUIDModel.objects.create()
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u2 = PrimaryKeyUUIDModel.objects.create()
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r = RelatedToUUIDModel.objects.create(uuid_fk=u1)
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RelatedToUUIDModel.objects.update(uuid_fk=u2.pk)
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r.refresh_from_db()
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self.assertEqual(r.uuid_fk, u2)
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def test_two_level_foreign_keys(self):
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gc = UUIDGrandchild()
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# exercises ForeignKey.get_db_prep_value()
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gc.save()
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self.assertIsInstance(gc.uuidchild_ptr_id, uuid.UUID)
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gc.refresh_from_db()
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self.assertIsInstance(gc.uuidchild_ptr_id, uuid.UUID)
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class TestAsPrimaryKeyTransactionTests(TransactionTestCase):
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# Need a TransactionTestCase to avoid deferring FK constraint checking.
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available_apps = ['model_fields']
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@skipUnlessDBFeature('supports_foreign_keys')
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def test_unsaved_fk(self):
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u1 = PrimaryKeyUUIDModel()
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with self.assertRaises(IntegrityError):
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RelatedToUUIDModel.objects.create(uuid_fk=u1)
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