mirror of
https://github.com/encode/django-rest-framework.git
synced 2024-09-21 11:29:01 +03:00
148 lines
5.1 KiB
Python
148 lines
5.1 KiB
Python
from __future__ import unicode_literals
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from django.conf.urls import patterns, url
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from django.db import connection, connections, transaction
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from django.http import Http404
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from django.test import TestCase, TransactionTestCase
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from django.utils.decorators import method_decorator
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from django.utils.unittest import skipUnless
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from rest_framework import status
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from rest_framework.exceptions import APIException
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from rest_framework.response import Response
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from rest_framework.test import APIRequestFactory
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from rest_framework.views import APIView
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from tests.models import BasicModel
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factory = APIRequestFactory()
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class BasicView(APIView):
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def post(self, request, *args, **kwargs):
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BasicModel.objects.create()
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return Response({'method': 'GET'})
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class ErrorView(APIView):
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def post(self, request, *args, **kwargs):
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BasicModel.objects.create()
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raise Exception
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class APIExceptionView(APIView):
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def post(self, request, *args, **kwargs):
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BasicModel.objects.create()
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raise APIException
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@skipUnless(connection.features.uses_savepoints,
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"'atomic' requires transactions and savepoints.")
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class DBTransactionTests(TestCase):
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def setUp(self):
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self.view = BasicView.as_view()
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connections.databases['default']['ATOMIC_REQUESTS'] = True
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def tearDown(self):
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connections.databases['default']['ATOMIC_REQUESTS'] = False
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def test_no_exception_conmmit_transaction(self):
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request = factory.post('/')
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with self.assertNumQueries(1):
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response = self.view(request)
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self.assertFalse(transaction.get_rollback())
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self.assertEqual(response.status_code, status.HTTP_200_OK)
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assert BasicModel.objects.count() == 1
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@skipUnless(connection.features.uses_savepoints,
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"'atomic' requires transactions and savepoints.")
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class DBTransactionErrorTests(TestCase):
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def setUp(self):
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self.view = ErrorView.as_view()
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connections.databases['default']['ATOMIC_REQUESTS'] = True
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def tearDown(self):
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connections.databases['default']['ATOMIC_REQUESTS'] = False
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def test_generic_exception_delegate_transaction_management(self):
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"""
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Transaction is eventually managed by outer-most transaction atomic
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block. DRF do not try to interfere here.
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We let django deal with the transaction when it will catch the Exception.
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"""
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request = factory.post('/')
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with self.assertNumQueries(3):
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# 1 - begin savepoint
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# 2 - insert
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# 3 - release savepoint
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with transaction.atomic():
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self.assertRaises(Exception, self.view, request)
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self.assertFalse(transaction.get_rollback())
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assert BasicModel.objects.count() == 1
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@skipUnless(connection.features.uses_savepoints,
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"'atomic' requires transactions and savepoints.")
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class DBTransactionAPIExceptionTests(TestCase):
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def setUp(self):
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self.view = APIExceptionView.as_view()
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connections.databases['default']['ATOMIC_REQUESTS'] = True
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def tearDown(self):
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connections.databases['default']['ATOMIC_REQUESTS'] = False
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def test_api_exception_rollback_transaction(self):
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"""
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Transaction is rollbacked by our transaction atomic block.
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"""
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request = factory.post('/')
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num_queries = (4 if getattr(connection.features,
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'can_release_savepoints', False) else 3)
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with self.assertNumQueries(num_queries):
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# 1 - begin savepoint
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# 2 - insert
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# 3 - rollback savepoint
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# 4 - release savepoint (django>=1.8 only)
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with transaction.atomic():
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response = self.view(request)
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self.assertTrue(transaction.get_rollback())
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self.assertEqual(response.status_code,
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status.HTTP_500_INTERNAL_SERVER_ERROR)
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assert BasicModel.objects.count() == 0
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@skipUnless(connection.features.uses_savepoints,
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"'atomic' requires transactions and savepoints.")
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class NonAtomicDBTransactionAPIExceptionTests(TransactionTestCase):
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@property
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def urls(self):
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class NonAtomicAPIExceptionView(APIView):
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@method_decorator(transaction.non_atomic_requests)
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def dispatch(self, *args, **kwargs):
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return super(NonAtomicAPIExceptionView, self).dispatch(*args, **kwargs)
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def get(self, request, *args, **kwargs):
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BasicModel.objects.all()
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raise Http404
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return patterns(
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'',
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url(r'^$', NonAtomicAPIExceptionView.as_view())
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)
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def setUp(self):
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connections.databases['default']['ATOMIC_REQUESTS'] = True
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def tearDown(self):
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connections.databases['default']['ATOMIC_REQUESTS'] = False
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def test_api_exception_rollback_transaction_non_atomic_view(self):
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response = self.client.get('/')
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# without checking connection.in_atomic_block view raises 500
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# due attempt to rollback without transaction
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self.assertEqual(response.status_code,
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status.HTTP_404_NOT_FOUND)
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