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124 lines
4.5 KiB
Python
124 lines
4.5 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 models
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from django.test import TestCase
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from .models import NullableUUIDModel, PrimaryKeyUUIDModel, UUIDModel
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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.assertEqual(loaded.field, None)
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def test_wrong_value(self):
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self.assertRaisesMessage(
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ValueError, 'badly formed hexadecimal UUID string',
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UUIDModel.objects.get, field='not-a-uuid')
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self.assertRaisesMessage(
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ValueError, 'badly formed hexadecimal UUID string',
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UUIDModel.objects.create, field='not-a-uuid')
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class TestMigrations(TestCase):
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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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class TestQuerying(TestCase):
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def setUp(self):
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self.objs = [
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NullableUUIDModel.objects.create(field=uuid.uuid4()),
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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 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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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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class TestSerialization(TestCase):
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test_data = '[{"fields": {"field": "550e8400-e29b-41d4-a716-446655440000"}, "model": "model_fields.uuidmodel", "pk": null}]'
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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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class TestValidation(TestCase):
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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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# Check that 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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