mirror of
https://github.com/django/django.git
synced 2025-10-31 09:41:08 +00:00
4ea02bdb0d
Refs #15802 -- Reverted #7c657b24 as BaseDatabaseWrapper.close() now
has a proper "finally" clause that may need to preserve self.connection.
Backport of 25860096 from master.
738 lines
30 KiB
Python
738 lines
30 KiB
Python
from __future__ import absolute_import
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import sys
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try:
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import threading
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except ImportError:
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threading = None
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import time
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from django.db import (connection, transaction,
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DatabaseError, Error, IntegrityError, OperationalError)
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from django.test import TransactionTestCase, skipIfDBFeature, skipUnlessDBFeature
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from django.test.utils import IgnorePendingDeprecationWarningsMixin
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from django.utils import six
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from django.utils.unittest import skipIf, skipUnless
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from .models import Reporter
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@skipUnless(connection.features.uses_savepoints,
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"'atomic' requires transactions and savepoints.")
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class AtomicTests(TransactionTestCase):
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"""
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Tests for the atomic decorator and context manager.
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The tests make assertions on internal attributes because there isn't a
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robust way to ask the database for its current transaction state.
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Since the decorator syntax is converted into a context manager (see the
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implementation), there are only a few basic tests with the decorator
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syntax and the bulk of the tests use the context manager syntax.
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"""
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available_apps = ['transactions']
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def test_decorator_syntax_commit(self):
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@transaction.atomic
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def make_reporter():
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Reporter.objects.create(first_name="Tintin")
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make_reporter()
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self.assertQuerysetEqual(Reporter.objects.all(), ['<Reporter: Tintin>'])
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def test_decorator_syntax_rollback(self):
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@transaction.atomic
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def make_reporter():
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Reporter.objects.create(first_name="Haddock")
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raise Exception("Oops, that's his last name")
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with six.assertRaisesRegex(self, Exception, "Oops"):
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make_reporter()
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self.assertQuerysetEqual(Reporter.objects.all(), [])
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def test_alternate_decorator_syntax_commit(self):
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@transaction.atomic()
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def make_reporter():
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Reporter.objects.create(first_name="Tintin")
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make_reporter()
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self.assertQuerysetEqual(Reporter.objects.all(), ['<Reporter: Tintin>'])
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def test_alternate_decorator_syntax_rollback(self):
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@transaction.atomic()
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def make_reporter():
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Reporter.objects.create(first_name="Haddock")
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raise Exception("Oops, that's his last name")
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with six.assertRaisesRegex(self, Exception, "Oops"):
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make_reporter()
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self.assertQuerysetEqual(Reporter.objects.all(), [])
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def test_commit(self):
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with transaction.atomic():
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Reporter.objects.create(first_name="Tintin")
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self.assertQuerysetEqual(Reporter.objects.all(), ['<Reporter: Tintin>'])
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def test_rollback(self):
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with six.assertRaisesRegex(self, Exception, "Oops"):
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with transaction.atomic():
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Reporter.objects.create(first_name="Haddock")
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raise Exception("Oops, that's his last name")
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self.assertQuerysetEqual(Reporter.objects.all(), [])
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def test_nested_commit_commit(self):
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with transaction.atomic():
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Reporter.objects.create(first_name="Tintin")
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with transaction.atomic():
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Reporter.objects.create(first_name="Archibald", last_name="Haddock")
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self.assertQuerysetEqual(Reporter.objects.all(),
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['<Reporter: Archibald Haddock>', '<Reporter: Tintin>'])
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def test_nested_commit_rollback(self):
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with transaction.atomic():
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Reporter.objects.create(first_name="Tintin")
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with six.assertRaisesRegex(self, Exception, "Oops"):
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with transaction.atomic():
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Reporter.objects.create(first_name="Haddock")
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raise Exception("Oops, that's his last name")
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self.assertQuerysetEqual(Reporter.objects.all(), ['<Reporter: Tintin>'])
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def test_nested_rollback_commit(self):
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with six.assertRaisesRegex(self, Exception, "Oops"):
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with transaction.atomic():
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Reporter.objects.create(last_name="Tintin")
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with transaction.atomic():
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Reporter.objects.create(last_name="Haddock")
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raise Exception("Oops, that's his first name")
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self.assertQuerysetEqual(Reporter.objects.all(), [])
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def test_nested_rollback_rollback(self):
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with six.assertRaisesRegex(self, Exception, "Oops"):
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with transaction.atomic():
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Reporter.objects.create(last_name="Tintin")
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with six.assertRaisesRegex(self, Exception, "Oops"):
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with transaction.atomic():
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Reporter.objects.create(first_name="Haddock")
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raise Exception("Oops, that's his last name")
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raise Exception("Oops, that's his first name")
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self.assertQuerysetEqual(Reporter.objects.all(), [])
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def test_merged_commit_commit(self):
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with transaction.atomic():
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Reporter.objects.create(first_name="Tintin")
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with transaction.atomic(savepoint=False):
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Reporter.objects.create(first_name="Archibald", last_name="Haddock")
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self.assertQuerysetEqual(Reporter.objects.all(),
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['<Reporter: Archibald Haddock>', '<Reporter: Tintin>'])
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def test_merged_commit_rollback(self):
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with transaction.atomic():
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Reporter.objects.create(first_name="Tintin")
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with six.assertRaisesRegex(self, Exception, "Oops"):
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with transaction.atomic(savepoint=False):
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Reporter.objects.create(first_name="Haddock")
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raise Exception("Oops, that's his last name")
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# Writes in the outer block are rolled back too.
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self.assertQuerysetEqual(Reporter.objects.all(), [])
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def test_merged_rollback_commit(self):
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with six.assertRaisesRegex(self, Exception, "Oops"):
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with transaction.atomic():
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Reporter.objects.create(last_name="Tintin")
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with transaction.atomic(savepoint=False):
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Reporter.objects.create(last_name="Haddock")
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raise Exception("Oops, that's his first name")
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self.assertQuerysetEqual(Reporter.objects.all(), [])
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def test_merged_rollback_rollback(self):
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with six.assertRaisesRegex(self, Exception, "Oops"):
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with transaction.atomic():
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Reporter.objects.create(last_name="Tintin")
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with six.assertRaisesRegex(self, Exception, "Oops"):
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with transaction.atomic(savepoint=False):
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Reporter.objects.create(first_name="Haddock")
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raise Exception("Oops, that's his last name")
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raise Exception("Oops, that's his first name")
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self.assertQuerysetEqual(Reporter.objects.all(), [])
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def test_reuse_commit_commit(self):
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atomic = transaction.atomic()
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with atomic:
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Reporter.objects.create(first_name="Tintin")
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with atomic:
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Reporter.objects.create(first_name="Archibald", last_name="Haddock")
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self.assertQuerysetEqual(Reporter.objects.all(),
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['<Reporter: Archibald Haddock>', '<Reporter: Tintin>'])
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def test_reuse_commit_rollback(self):
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atomic = transaction.atomic()
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with atomic:
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Reporter.objects.create(first_name="Tintin")
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with six.assertRaisesRegex(self, Exception, "Oops"):
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with atomic:
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Reporter.objects.create(first_name="Haddock")
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raise Exception("Oops, that's his last name")
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self.assertQuerysetEqual(Reporter.objects.all(), ['<Reporter: Tintin>'])
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def test_reuse_rollback_commit(self):
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atomic = transaction.atomic()
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with six.assertRaisesRegex(self, Exception, "Oops"):
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with atomic:
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Reporter.objects.create(last_name="Tintin")
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with atomic:
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Reporter.objects.create(last_name="Haddock")
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raise Exception("Oops, that's his first name")
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self.assertQuerysetEqual(Reporter.objects.all(), [])
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def test_reuse_rollback_rollback(self):
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atomic = transaction.atomic()
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with six.assertRaisesRegex(self, Exception, "Oops"):
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with atomic:
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Reporter.objects.create(last_name="Tintin")
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with six.assertRaisesRegex(self, Exception, "Oops"):
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with atomic:
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Reporter.objects.create(first_name="Haddock")
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raise Exception("Oops, that's his last name")
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raise Exception("Oops, that's his first name")
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self.assertQuerysetEqual(Reporter.objects.all(), [])
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def test_force_rollback(self):
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with transaction.atomic():
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Reporter.objects.create(first_name="Tintin")
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# atomic block shouldn't rollback, but force it.
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self.assertFalse(transaction.get_rollback())
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transaction.set_rollback(True)
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self.assertQuerysetEqual(Reporter.objects.all(), [])
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def test_prevent_rollback(self):
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with transaction.atomic():
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Reporter.objects.create(first_name="Tintin")
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sid = transaction.savepoint()
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# trigger a database error inside an inner atomic without savepoint
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with self.assertRaises(DatabaseError):
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with transaction.atomic(savepoint=False):
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connection.cursor().execute(
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"SELECT no_such_col FROM transactions_reporter")
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# prevent atomic from rolling back since we're recovering manually
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self.assertTrue(transaction.get_rollback())
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transaction.set_rollback(False)
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transaction.savepoint_rollback(sid)
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self.assertQuerysetEqual(Reporter.objects.all(), ['<Reporter: Tintin>'])
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class AtomicInsideTransactionTests(AtomicTests):
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"""All basic tests for atomic should also pass within an existing transaction."""
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def setUp(self):
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self.atomic = transaction.atomic()
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self.atomic.__enter__()
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def tearDown(self):
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self.atomic.__exit__(*sys.exc_info())
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@skipIf(connection.features.autocommits_when_autocommit_is_off,
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"This test requires a non-autocommit mode that doesn't autocommit.")
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class AtomicWithoutAutocommitTests(AtomicTests):
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"""All basic tests for atomic should also pass when autocommit is turned off."""
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def setUp(self):
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transaction.set_autocommit(False)
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def tearDown(self):
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# The tests access the database after exercising 'atomic', initiating
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# a transaction ; a rollback is required before restoring autocommit.
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transaction.rollback()
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transaction.set_autocommit(True)
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@skipIf(connection.features.autocommits_when_autocommit_is_off,
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"This test requires a non-autocommit mode that doesn't autocommit.")
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class AtomicInsideLegacyTransactionManagementTests(AtomicTests):
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def setUp(self):
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transaction.enter_transaction_management()
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def tearDown(self):
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# The tests access the database after exercising 'atomic', making the
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# connection dirty; a rollback is required to make it clean.
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transaction.rollback()
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transaction.leave_transaction_management()
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@skipUnless(connection.features.uses_savepoints,
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"'atomic' requires transactions and savepoints.")
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class AtomicMergeTests(TransactionTestCase):
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"""Test merging transactions with savepoint=False."""
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available_apps = ['transactions']
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def test_merged_outer_rollback(self):
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with transaction.atomic():
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Reporter.objects.create(first_name="Tintin")
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with transaction.atomic(savepoint=False):
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Reporter.objects.create(first_name="Archibald", last_name="Haddock")
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with six.assertRaisesRegex(self, Exception, "Oops"):
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with transaction.atomic(savepoint=False):
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Reporter.objects.create(first_name="Tournesol")
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raise Exception("Oops, that's his last name")
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# The third insert couldn't be roll back. Temporarily mark the
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# connection as not needing rollback to check it.
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self.assertTrue(transaction.get_rollback())
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transaction.set_rollback(False)
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self.assertEqual(Reporter.objects.count(), 3)
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transaction.set_rollback(True)
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# The second insert couldn't be roll back. Temporarily mark the
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# connection as not needing rollback to check it.
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self.assertTrue(transaction.get_rollback())
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transaction.set_rollback(False)
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self.assertEqual(Reporter.objects.count(), 3)
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transaction.set_rollback(True)
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# The first block has a savepoint and must roll back.
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self.assertQuerysetEqual(Reporter.objects.all(), [])
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def test_merged_inner_savepoint_rollback(self):
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with transaction.atomic():
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Reporter.objects.create(first_name="Tintin")
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with transaction.atomic():
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Reporter.objects.create(first_name="Archibald", last_name="Haddock")
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with six.assertRaisesRegex(self, Exception, "Oops"):
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with transaction.atomic(savepoint=False):
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Reporter.objects.create(first_name="Tournesol")
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raise Exception("Oops, that's his last name")
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# The third insert couldn't be roll back. Temporarily mark the
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# connection as not needing rollback to check it.
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self.assertTrue(transaction.get_rollback())
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transaction.set_rollback(False)
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self.assertEqual(Reporter.objects.count(), 3)
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transaction.set_rollback(True)
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# The second block has a savepoint and must roll back.
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self.assertEqual(Reporter.objects.count(), 1)
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self.assertQuerysetEqual(Reporter.objects.all(), ['<Reporter: Tintin>'])
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@skipUnless(connection.features.uses_savepoints,
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"'atomic' requires transactions and savepoints.")
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class AtomicErrorsTests(TransactionTestCase):
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available_apps = ['transactions']
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def test_atomic_prevents_setting_autocommit(self):
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autocommit = transaction.get_autocommit()
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with transaction.atomic():
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with self.assertRaises(transaction.TransactionManagementError):
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transaction.set_autocommit(not autocommit)
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# Make sure autocommit wasn't changed.
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self.assertEqual(connection.autocommit, autocommit)
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def test_atomic_prevents_calling_transaction_methods(self):
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with transaction.atomic():
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with self.assertRaises(transaction.TransactionManagementError):
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transaction.commit()
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with self.assertRaises(transaction.TransactionManagementError):
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transaction.rollback()
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def test_atomic_prevents_calling_transaction_management_methods(self):
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with transaction.atomic():
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with self.assertRaises(transaction.TransactionManagementError):
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transaction.enter_transaction_management()
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with self.assertRaises(transaction.TransactionManagementError):
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transaction.leave_transaction_management()
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def test_atomic_prevents_queries_in_broken_transaction(self):
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r1 = Reporter.objects.create(first_name="Archibald", last_name="Haddock")
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with transaction.atomic():
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r2 = Reporter(first_name="Cuthbert", last_name="Calculus", id=r1.id)
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with self.assertRaises(IntegrityError):
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r2.save(force_insert=True)
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# The transaction is marked as needing rollback.
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with self.assertRaises(transaction.TransactionManagementError):
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r2.save(force_update=True)
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self.assertEqual(Reporter.objects.get(pk=r1.pk).last_name, "Haddock")
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@skipIfDBFeature('atomic_transactions')
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def test_atomic_allows_queries_after_fixing_transaction(self):
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r1 = Reporter.objects.create(first_name="Archibald", last_name="Haddock")
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with transaction.atomic():
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r2 = Reporter(first_name="Cuthbert", last_name="Calculus", id=r1.id)
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with self.assertRaises(IntegrityError):
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r2.save(force_insert=True)
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# Mark the transaction as no longer needing rollback.
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transaction.set_rollback(False)
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r2.save(force_update=True)
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self.assertEqual(Reporter.objects.get(pk=r1.pk).last_name, "Calculus")
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@skipUnlessDBFeature('test_db_allows_multiple_connections')
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def test_atomic_prevents_queries_in_broken_transaction_after_client_close(self):
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with transaction.atomic():
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Reporter.objects.create(first_name="Archibald", last_name="Haddock")
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connection.close()
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# The connection is closed and the transaction is marked as
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# needing rollback. This will raise an InterfaceError on databases
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# that refuse to create cursors on closed connections (PostgreSQL)
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# and a TransactionManagementError on other databases.
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with self.assertRaises(Error):
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Reporter.objects.create(first_name="Cuthbert", last_name="Calculus")
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# The connection is usable again .
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self.assertEqual(Reporter.objects.count(), 0)
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@skipUnless(connection.vendor == 'mysql', "MySQL-specific behaviors")
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class AtomicMySQLTests(TransactionTestCase):
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available_apps = ['transactions']
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@skipIf(threading is None, "Test requires threading")
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def test_implicit_savepoint_rollback(self):
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"""MySQL implicitly rolls back savepoints when it deadlocks (#22291)."""
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other_thread_ready = threading.Event()
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def other_thread():
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try:
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with transaction.atomic():
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Reporter.objects.create(id=1, first_name="Tintin")
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other_thread_ready.set()
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# We cannot synchronize the two threads with an event here
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# because the main thread locks. Sleep for a little while.
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time.sleep(1)
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# 2) ... and this line deadlocks. (see below for 1)
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Reporter.objects.exclude(id=1).update(id=2)
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finally:
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# This is the thread-local connection, not the main connection.
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connection.close()
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other_thread = threading.Thread(target=other_thread)
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other_thread.start()
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other_thread_ready.wait()
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with six.assertRaisesRegex(self, OperationalError, 'Deadlock found'):
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# Double atomic to enter a transaction and create a savepoint.
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with transaction.atomic():
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with transaction.atomic():
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# 1) This line locks... (see above for 2)
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Reporter.objects.create(id=1, first_name="Tintin")
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other_thread.join()
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class AtomicMiscTests(TransactionTestCase):
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available_apps = []
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def test_wrap_callable_instance(self):
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# Regression test for #20028
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class Callable(object):
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def __call__(self):
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pass
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# Must not raise an exception
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transaction.atomic(Callable())
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class TransactionTests(IgnorePendingDeprecationWarningsMixin, TransactionTestCase):
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available_apps = ['transactions']
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def create_a_reporter_then_fail(self, first, last):
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a = Reporter(first_name=first, last_name=last)
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a.save()
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raise Exception("I meant to do that")
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def remove_a_reporter(self, first_name):
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r = Reporter.objects.get(first_name="Alice")
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r.delete()
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def manually_managed(self):
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r = Reporter(first_name="Dirk", last_name="Gently")
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r.save()
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transaction.commit()
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def manually_managed_mistake(self):
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r = Reporter(first_name="Edward", last_name="Woodward")
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r.save()
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# Oops, I forgot to commit/rollback!
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@skipUnlessDBFeature('supports_transactions')
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def test_autocommit(self):
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"""
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The default behavior is to autocommit after each save() action.
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"""
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self.assertRaises(Exception,
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self.create_a_reporter_then_fail,
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"Alice", "Smith"
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)
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# The object created before the exception still exists
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self.assertEqual(Reporter.objects.count(), 1)
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|
|
@skipUnlessDBFeature('supports_transactions')
|
|
def test_autocommit_decorator(self):
|
|
"""
|
|
The autocommit decorator works exactly the same as the default behavior.
|
|
"""
|
|
autocomitted_create_then_fail = transaction.autocommit(
|
|
self.create_a_reporter_then_fail
|
|
)
|
|
self.assertRaises(Exception,
|
|
autocomitted_create_then_fail,
|
|
"Alice", "Smith"
|
|
)
|
|
# Again, the object created before the exception still exists
|
|
self.assertEqual(Reporter.objects.count(), 1)
|
|
|
|
@skipUnlessDBFeature('supports_transactions')
|
|
def test_autocommit_decorator_with_using(self):
|
|
"""
|
|
The autocommit decorator also works with a using argument.
|
|
"""
|
|
autocomitted_create_then_fail = transaction.autocommit(using='default')(
|
|
self.create_a_reporter_then_fail
|
|
)
|
|
self.assertRaises(Exception,
|
|
autocomitted_create_then_fail,
|
|
"Alice", "Smith"
|
|
)
|
|
# Again, the object created before the exception still exists
|
|
self.assertEqual(Reporter.objects.count(), 1)
|
|
|
|
@skipUnlessDBFeature('supports_transactions')
|
|
def test_commit_on_success(self):
|
|
"""
|
|
With the commit_on_success decorator, the transaction is only committed
|
|
if the function doesn't throw an exception.
|
|
"""
|
|
committed_on_success = transaction.commit_on_success(
|
|
self.create_a_reporter_then_fail)
|
|
self.assertRaises(Exception, committed_on_success, "Dirk", "Gently")
|
|
# This time the object never got saved
|
|
self.assertEqual(Reporter.objects.count(), 0)
|
|
|
|
@skipUnlessDBFeature('supports_transactions')
|
|
def test_commit_on_success_with_using(self):
|
|
"""
|
|
The commit_on_success decorator also works with a using argument.
|
|
"""
|
|
using_committed_on_success = transaction.commit_on_success(using='default')(
|
|
self.create_a_reporter_then_fail
|
|
)
|
|
self.assertRaises(Exception,
|
|
using_committed_on_success,
|
|
"Dirk", "Gently"
|
|
)
|
|
# This time the object never got saved
|
|
self.assertEqual(Reporter.objects.count(), 0)
|
|
|
|
@skipUnlessDBFeature('supports_transactions')
|
|
def test_commit_on_success_succeed(self):
|
|
"""
|
|
If there aren't any exceptions, the data will get saved.
|
|
"""
|
|
Reporter.objects.create(first_name="Alice", last_name="Smith")
|
|
remove_comitted_on_success = transaction.commit_on_success(
|
|
self.remove_a_reporter
|
|
)
|
|
remove_comitted_on_success("Alice")
|
|
self.assertEqual(list(Reporter.objects.all()), [])
|
|
|
|
@skipUnlessDBFeature('supports_transactions')
|
|
def test_commit_on_success_exit(self):
|
|
@transaction.autocommit()
|
|
def gen_reporter():
|
|
@transaction.commit_on_success
|
|
def create_reporter():
|
|
Reporter.objects.create(first_name="Bobby", last_name="Tables")
|
|
|
|
create_reporter()
|
|
# Much more formal
|
|
r = Reporter.objects.get()
|
|
r.first_name = "Robert"
|
|
r.save()
|
|
|
|
gen_reporter()
|
|
r = Reporter.objects.get()
|
|
self.assertEqual(r.first_name, "Robert")
|
|
|
|
|
|
@skipUnlessDBFeature('supports_transactions')
|
|
def test_manually_managed(self):
|
|
"""
|
|
You can manually manage transactions if you really want to, but you
|
|
have to remember to commit/rollback.
|
|
"""
|
|
manually_managed = transaction.commit_manually(self.manually_managed)
|
|
manually_managed()
|
|
self.assertEqual(Reporter.objects.count(), 1)
|
|
|
|
@skipUnlessDBFeature('supports_transactions')
|
|
def test_manually_managed_mistake(self):
|
|
"""
|
|
If you forget, you'll get bad errors.
|
|
"""
|
|
manually_managed_mistake = transaction.commit_manually(
|
|
self.manually_managed_mistake
|
|
)
|
|
self.assertRaises(transaction.TransactionManagementError,
|
|
manually_managed_mistake)
|
|
|
|
@skipUnlessDBFeature('supports_transactions')
|
|
def test_manually_managed_with_using(self):
|
|
"""
|
|
The commit_manually function also works with a using argument.
|
|
"""
|
|
using_manually_managed_mistake = transaction.commit_manually(using='default')(
|
|
self.manually_managed_mistake
|
|
)
|
|
self.assertRaises(transaction.TransactionManagementError,
|
|
using_manually_managed_mistake
|
|
)
|
|
|
|
|
|
class TransactionRollbackTests(IgnorePendingDeprecationWarningsMixin, TransactionTestCase):
|
|
|
|
available_apps = ['transactions']
|
|
|
|
def execute_bad_sql(self):
|
|
cursor = connection.cursor()
|
|
cursor.execute("INSERT INTO transactions_reporter (first_name, last_name) VALUES ('Douglas', 'Adams');")
|
|
|
|
@skipUnlessDBFeature('requires_rollback_on_dirty_transaction')
|
|
def test_bad_sql(self):
|
|
"""
|
|
Regression for #11900: If a function wrapped by commit_on_success
|
|
writes a transaction that can't be committed, that transaction should
|
|
be rolled back. The bug is only visible using the psycopg2 backend,
|
|
though the fix is generally a good idea.
|
|
"""
|
|
execute_bad_sql = transaction.commit_on_success(self.execute_bad_sql)
|
|
self.assertRaises(IntegrityError, execute_bad_sql)
|
|
transaction.rollback()
|
|
|
|
class TransactionContextManagerTests(IgnorePendingDeprecationWarningsMixin, TransactionTestCase):
|
|
|
|
available_apps = ['transactions']
|
|
|
|
def create_reporter_and_fail(self):
|
|
Reporter.objects.create(first_name="Bob", last_name="Holtzman")
|
|
raise Exception
|
|
|
|
@skipUnlessDBFeature('supports_transactions')
|
|
def test_autocommit(self):
|
|
"""
|
|
The default behavior is to autocommit after each save() action.
|
|
"""
|
|
with self.assertRaises(Exception):
|
|
self.create_reporter_and_fail()
|
|
# The object created before the exception still exists
|
|
self.assertEqual(Reporter.objects.count(), 1)
|
|
|
|
@skipUnlessDBFeature('supports_transactions')
|
|
def test_autocommit_context_manager(self):
|
|
"""
|
|
The autocommit context manager works exactly the same as the default
|
|
behavior.
|
|
"""
|
|
with self.assertRaises(Exception):
|
|
with transaction.autocommit():
|
|
self.create_reporter_and_fail()
|
|
|
|
self.assertEqual(Reporter.objects.count(), 1)
|
|
|
|
@skipUnlessDBFeature('supports_transactions')
|
|
def test_autocommit_context_manager_with_using(self):
|
|
"""
|
|
The autocommit context manager also works with a using argument.
|
|
"""
|
|
with self.assertRaises(Exception):
|
|
with transaction.autocommit(using="default"):
|
|
self.create_reporter_and_fail()
|
|
|
|
self.assertEqual(Reporter.objects.count(), 1)
|
|
|
|
@skipUnlessDBFeature('supports_transactions')
|
|
def test_commit_on_success(self):
|
|
"""
|
|
With the commit_on_success context manager, the transaction is only
|
|
committed if the block doesn't throw an exception.
|
|
"""
|
|
with self.assertRaises(Exception):
|
|
with transaction.commit_on_success():
|
|
self.create_reporter_and_fail()
|
|
|
|
self.assertEqual(Reporter.objects.count(), 0)
|
|
|
|
@skipUnlessDBFeature('supports_transactions')
|
|
def test_commit_on_success_with_using(self):
|
|
"""
|
|
The commit_on_success context manager also works with a using argument.
|
|
"""
|
|
with self.assertRaises(Exception):
|
|
with transaction.commit_on_success(using="default"):
|
|
self.create_reporter_and_fail()
|
|
|
|
self.assertEqual(Reporter.objects.count(), 0)
|
|
|
|
@skipUnlessDBFeature('supports_transactions')
|
|
def test_commit_on_success_succeed(self):
|
|
"""
|
|
If there aren't any exceptions, the data will get saved.
|
|
"""
|
|
Reporter.objects.create(first_name="Alice", last_name="Smith")
|
|
with transaction.commit_on_success():
|
|
Reporter.objects.filter(first_name="Alice").delete()
|
|
|
|
self.assertQuerysetEqual(Reporter.objects.all(), [])
|
|
|
|
@skipUnlessDBFeature('supports_transactions')
|
|
def test_commit_on_success_exit(self):
|
|
with transaction.autocommit():
|
|
with transaction.commit_on_success():
|
|
Reporter.objects.create(first_name="Bobby", last_name="Tables")
|
|
|
|
# Much more formal
|
|
r = Reporter.objects.get()
|
|
r.first_name = "Robert"
|
|
r.save()
|
|
|
|
r = Reporter.objects.get()
|
|
self.assertEqual(r.first_name, "Robert")
|
|
|
|
@skipUnlessDBFeature('supports_transactions')
|
|
def test_manually_managed(self):
|
|
"""
|
|
You can manually manage transactions if you really want to, but you
|
|
have to remember to commit/rollback.
|
|
"""
|
|
with transaction.commit_manually():
|
|
Reporter.objects.create(first_name="Libby", last_name="Holtzman")
|
|
transaction.commit()
|
|
self.assertEqual(Reporter.objects.count(), 1)
|
|
|
|
@skipUnlessDBFeature('supports_transactions')
|
|
def test_manually_managed_mistake(self):
|
|
"""
|
|
If you forget, you'll get bad errors.
|
|
"""
|
|
with self.assertRaises(transaction.TransactionManagementError):
|
|
with transaction.commit_manually():
|
|
Reporter.objects.create(first_name="Scott", last_name="Browning")
|
|
|
|
@skipUnlessDBFeature('supports_transactions')
|
|
def test_manually_managed_with_using(self):
|
|
"""
|
|
The commit_manually function also works with a using argument.
|
|
"""
|
|
with self.assertRaises(transaction.TransactionManagementError):
|
|
with transaction.commit_manually(using="default"):
|
|
Reporter.objects.create(first_name="Walter", last_name="Cronkite")
|
|
|
|
@skipUnlessDBFeature('requires_rollback_on_dirty_transaction')
|
|
def test_bad_sql(self):
|
|
"""
|
|
Regression for #11900: If a block wrapped by commit_on_success
|
|
writes a transaction that can't be committed, that transaction should
|
|
be rolled back. The bug is only visible using the psycopg2 backend,
|
|
though the fix is generally a good idea.
|
|
"""
|
|
with self.assertRaises(IntegrityError):
|
|
with transaction.commit_on_success():
|
|
cursor = connection.cursor()
|
|
cursor.execute("INSERT INTO transactions_reporter (first_name, last_name) VALUES ('Douglas', 'Adams');")
|
|
transaction.rollback()
|