mirror of
https://github.com/django/django.git
synced 2024-11-20 16:34:17 +00:00
3ffeb93186
This commit touchs various parts of the code base and test framework. Any found usage of opening a cursor for the sake of initializing a connection has been replaced with 'ensure_connection()'.
685 lines
28 KiB
Python
685 lines
28 KiB
Python
from __future__ import unicode_literals
|
|
|
|
import sys
|
|
from unittest import skipIf, skipUnless
|
|
|
|
from django.db import connection, transaction, DatabaseError, IntegrityError
|
|
from django.test import TransactionTestCase, skipIfDBFeature, skipUnlessDBFeature
|
|
from django.test.utils import IgnoreDeprecationWarningsMixin
|
|
from django.utils import six
|
|
|
|
from .models import Reporter
|
|
|
|
|
|
@skipUnless(connection.features.uses_savepoints,
|
|
"'atomic' requires transactions and savepoints.")
|
|
class AtomicTests(TransactionTestCase):
|
|
"""
|
|
Tests for the atomic decorator and context manager.
|
|
|
|
The tests make assertions on internal attributes because there isn't a
|
|
robust way to ask the database for its current transaction state.
|
|
|
|
Since the decorator syntax is converted into a context manager (see the
|
|
implementation), there are only a few basic tests with the decorator
|
|
syntax and the bulk of the tests use the context manager syntax.
|
|
"""
|
|
|
|
available_apps = ['transactions']
|
|
|
|
def test_decorator_syntax_commit(self):
|
|
@transaction.atomic
|
|
def make_reporter():
|
|
Reporter.objects.create(first_name="Tintin")
|
|
make_reporter()
|
|
self.assertQuerysetEqual(Reporter.objects.all(), ['<Reporter: Tintin>'])
|
|
|
|
def test_decorator_syntax_rollback(self):
|
|
@transaction.atomic
|
|
def make_reporter():
|
|
Reporter.objects.create(first_name="Haddock")
|
|
raise Exception("Oops, that's his last name")
|
|
with six.assertRaisesRegex(self, Exception, "Oops"):
|
|
make_reporter()
|
|
self.assertQuerysetEqual(Reporter.objects.all(), [])
|
|
|
|
def test_alternate_decorator_syntax_commit(self):
|
|
@transaction.atomic()
|
|
def make_reporter():
|
|
Reporter.objects.create(first_name="Tintin")
|
|
make_reporter()
|
|
self.assertQuerysetEqual(Reporter.objects.all(), ['<Reporter: Tintin>'])
|
|
|
|
def test_alternate_decorator_syntax_rollback(self):
|
|
@transaction.atomic()
|
|
def make_reporter():
|
|
Reporter.objects.create(first_name="Haddock")
|
|
raise Exception("Oops, that's his last name")
|
|
with six.assertRaisesRegex(self, Exception, "Oops"):
|
|
make_reporter()
|
|
self.assertQuerysetEqual(Reporter.objects.all(), [])
|
|
|
|
def test_commit(self):
|
|
with transaction.atomic():
|
|
Reporter.objects.create(first_name="Tintin")
|
|
self.assertQuerysetEqual(Reporter.objects.all(), ['<Reporter: Tintin>'])
|
|
|
|
def test_rollback(self):
|
|
with six.assertRaisesRegex(self, Exception, "Oops"):
|
|
with transaction.atomic():
|
|
Reporter.objects.create(first_name="Haddock")
|
|
raise Exception("Oops, that's his last name")
|
|
self.assertQuerysetEqual(Reporter.objects.all(), [])
|
|
|
|
def test_nested_commit_commit(self):
|
|
with transaction.atomic():
|
|
Reporter.objects.create(first_name="Tintin")
|
|
with transaction.atomic():
|
|
Reporter.objects.create(first_name="Archibald", last_name="Haddock")
|
|
self.assertQuerysetEqual(Reporter.objects.all(),
|
|
['<Reporter: Archibald Haddock>', '<Reporter: Tintin>'])
|
|
|
|
def test_nested_commit_rollback(self):
|
|
with transaction.atomic():
|
|
Reporter.objects.create(first_name="Tintin")
|
|
with six.assertRaisesRegex(self, Exception, "Oops"):
|
|
with transaction.atomic():
|
|
Reporter.objects.create(first_name="Haddock")
|
|
raise Exception("Oops, that's his last name")
|
|
self.assertQuerysetEqual(Reporter.objects.all(), ['<Reporter: Tintin>'])
|
|
|
|
def test_nested_rollback_commit(self):
|
|
with six.assertRaisesRegex(self, Exception, "Oops"):
|
|
with transaction.atomic():
|
|
Reporter.objects.create(last_name="Tintin")
|
|
with transaction.atomic():
|
|
Reporter.objects.create(last_name="Haddock")
|
|
raise Exception("Oops, that's his first name")
|
|
self.assertQuerysetEqual(Reporter.objects.all(), [])
|
|
|
|
def test_nested_rollback_rollback(self):
|
|
with six.assertRaisesRegex(self, Exception, "Oops"):
|
|
with transaction.atomic():
|
|
Reporter.objects.create(last_name="Tintin")
|
|
with six.assertRaisesRegex(self, Exception, "Oops"):
|
|
with transaction.atomic():
|
|
Reporter.objects.create(first_name="Haddock")
|
|
raise Exception("Oops, that's his last name")
|
|
raise Exception("Oops, that's his first name")
|
|
self.assertQuerysetEqual(Reporter.objects.all(), [])
|
|
|
|
def test_merged_commit_commit(self):
|
|
with transaction.atomic():
|
|
Reporter.objects.create(first_name="Tintin")
|
|
with transaction.atomic(savepoint=False):
|
|
Reporter.objects.create(first_name="Archibald", last_name="Haddock")
|
|
self.assertQuerysetEqual(Reporter.objects.all(),
|
|
['<Reporter: Archibald Haddock>', '<Reporter: Tintin>'])
|
|
|
|
def test_merged_commit_rollback(self):
|
|
with transaction.atomic():
|
|
Reporter.objects.create(first_name="Tintin")
|
|
with six.assertRaisesRegex(self, Exception, "Oops"):
|
|
with transaction.atomic(savepoint=False):
|
|
Reporter.objects.create(first_name="Haddock")
|
|
raise Exception("Oops, that's his last name")
|
|
# Writes in the outer block are rolled back too.
|
|
self.assertQuerysetEqual(Reporter.objects.all(), [])
|
|
|
|
def test_merged_rollback_commit(self):
|
|
with six.assertRaisesRegex(self, Exception, "Oops"):
|
|
with transaction.atomic():
|
|
Reporter.objects.create(last_name="Tintin")
|
|
with transaction.atomic(savepoint=False):
|
|
Reporter.objects.create(last_name="Haddock")
|
|
raise Exception("Oops, that's his first name")
|
|
self.assertQuerysetEqual(Reporter.objects.all(), [])
|
|
|
|
def test_merged_rollback_rollback(self):
|
|
with six.assertRaisesRegex(self, Exception, "Oops"):
|
|
with transaction.atomic():
|
|
Reporter.objects.create(last_name="Tintin")
|
|
with six.assertRaisesRegex(self, Exception, "Oops"):
|
|
with transaction.atomic(savepoint=False):
|
|
Reporter.objects.create(first_name="Haddock")
|
|
raise Exception("Oops, that's his last name")
|
|
raise Exception("Oops, that's his first name")
|
|
self.assertQuerysetEqual(Reporter.objects.all(), [])
|
|
|
|
def test_reuse_commit_commit(self):
|
|
atomic = transaction.atomic()
|
|
with atomic:
|
|
Reporter.objects.create(first_name="Tintin")
|
|
with atomic:
|
|
Reporter.objects.create(first_name="Archibald", last_name="Haddock")
|
|
self.assertQuerysetEqual(Reporter.objects.all(),
|
|
['<Reporter: Archibald Haddock>', '<Reporter: Tintin>'])
|
|
|
|
def test_reuse_commit_rollback(self):
|
|
atomic = transaction.atomic()
|
|
with atomic:
|
|
Reporter.objects.create(first_name="Tintin")
|
|
with six.assertRaisesRegex(self, Exception, "Oops"):
|
|
with atomic:
|
|
Reporter.objects.create(first_name="Haddock")
|
|
raise Exception("Oops, that's his last name")
|
|
self.assertQuerysetEqual(Reporter.objects.all(), ['<Reporter: Tintin>'])
|
|
|
|
def test_reuse_rollback_commit(self):
|
|
atomic = transaction.atomic()
|
|
with six.assertRaisesRegex(self, Exception, "Oops"):
|
|
with atomic:
|
|
Reporter.objects.create(last_name="Tintin")
|
|
with atomic:
|
|
Reporter.objects.create(last_name="Haddock")
|
|
raise Exception("Oops, that's his first name")
|
|
self.assertQuerysetEqual(Reporter.objects.all(), [])
|
|
|
|
def test_reuse_rollback_rollback(self):
|
|
atomic = transaction.atomic()
|
|
with six.assertRaisesRegex(self, Exception, "Oops"):
|
|
with atomic:
|
|
Reporter.objects.create(last_name="Tintin")
|
|
with six.assertRaisesRegex(self, Exception, "Oops"):
|
|
with atomic:
|
|
Reporter.objects.create(first_name="Haddock")
|
|
raise Exception("Oops, that's his last name")
|
|
raise Exception("Oops, that's his first name")
|
|
self.assertQuerysetEqual(Reporter.objects.all(), [])
|
|
|
|
def test_force_rollback(self):
|
|
with transaction.atomic():
|
|
Reporter.objects.create(first_name="Tintin")
|
|
# atomic block shouldn't rollback, but force it.
|
|
self.assertFalse(transaction.get_rollback())
|
|
transaction.set_rollback(True)
|
|
self.assertQuerysetEqual(Reporter.objects.all(), [])
|
|
|
|
def test_prevent_rollback(self):
|
|
with transaction.atomic():
|
|
Reporter.objects.create(first_name="Tintin")
|
|
sid = transaction.savepoint()
|
|
# trigger a database error inside an inner atomic without savepoint
|
|
with self.assertRaises(DatabaseError):
|
|
with transaction.atomic(savepoint=False):
|
|
with connection.cursor() as cursor:
|
|
cursor.execute(
|
|
"SELECT no_such_col FROM transactions_reporter")
|
|
# prevent atomic from rolling back since we're recovering manually
|
|
self.assertTrue(transaction.get_rollback())
|
|
transaction.set_rollback(False)
|
|
transaction.savepoint_rollback(sid)
|
|
self.assertQuerysetEqual(Reporter.objects.all(), ['<Reporter: Tintin>'])
|
|
|
|
|
|
class AtomicInsideTransactionTests(AtomicTests):
|
|
"""All basic tests for atomic should also pass within an existing transaction."""
|
|
|
|
def setUp(self):
|
|
self.atomic = transaction.atomic()
|
|
self.atomic.__enter__()
|
|
|
|
def tearDown(self):
|
|
self.atomic.__exit__(*sys.exc_info())
|
|
|
|
|
|
@skipIf(connection.features.autocommits_when_autocommit_is_off,
|
|
"This test requires a non-autocommit mode that doesn't autocommit.")
|
|
class AtomicWithoutAutocommitTests(AtomicTests):
|
|
"""All basic tests for atomic should also pass when autocommit is turned off."""
|
|
|
|
def setUp(self):
|
|
transaction.set_autocommit(False)
|
|
|
|
def tearDown(self):
|
|
# The tests access the database after exercising 'atomic', initiating
|
|
# a transaction ; a rollback is required before restoring autocommit.
|
|
transaction.rollback()
|
|
transaction.set_autocommit(True)
|
|
|
|
|
|
@skipIf(connection.features.autocommits_when_autocommit_is_off,
|
|
"This test requires a non-autocommit mode that doesn't autocommit.")
|
|
class AtomicInsideLegacyTransactionManagementTests(AtomicTests):
|
|
|
|
def setUp(self):
|
|
transaction.enter_transaction_management()
|
|
|
|
def tearDown(self):
|
|
# The tests access the database after exercising 'atomic', making the
|
|
# connection dirty; a rollback is required to make it clean.
|
|
transaction.rollback()
|
|
transaction.leave_transaction_management()
|
|
|
|
|
|
@skipUnless(connection.features.uses_savepoints,
|
|
"'atomic' requires transactions and savepoints.")
|
|
class AtomicMergeTests(TransactionTestCase):
|
|
"""Test merging transactions with savepoint=False."""
|
|
|
|
available_apps = ['transactions']
|
|
|
|
def test_merged_outer_rollback(self):
|
|
with transaction.atomic():
|
|
Reporter.objects.create(first_name="Tintin")
|
|
with transaction.atomic(savepoint=False):
|
|
Reporter.objects.create(first_name="Archibald", last_name="Haddock")
|
|
with six.assertRaisesRegex(self, Exception, "Oops"):
|
|
with transaction.atomic(savepoint=False):
|
|
Reporter.objects.create(first_name="Calculus")
|
|
raise Exception("Oops, that's his last name")
|
|
# The third insert couldn't be roll back. Temporarily mark the
|
|
# connection as not needing rollback to check it.
|
|
self.assertTrue(transaction.get_rollback())
|
|
transaction.set_rollback(False)
|
|
self.assertEqual(Reporter.objects.count(), 3)
|
|
transaction.set_rollback(True)
|
|
# The second insert couldn't be roll back. Temporarily mark the
|
|
# connection as not needing rollback to check it.
|
|
self.assertTrue(transaction.get_rollback())
|
|
transaction.set_rollback(False)
|
|
self.assertEqual(Reporter.objects.count(), 3)
|
|
transaction.set_rollback(True)
|
|
# The first block has a savepoint and must roll back.
|
|
self.assertQuerysetEqual(Reporter.objects.all(), [])
|
|
|
|
def test_merged_inner_savepoint_rollback(self):
|
|
with transaction.atomic():
|
|
Reporter.objects.create(first_name="Tintin")
|
|
with transaction.atomic():
|
|
Reporter.objects.create(first_name="Archibald", last_name="Haddock")
|
|
with six.assertRaisesRegex(self, Exception, "Oops"):
|
|
with transaction.atomic(savepoint=False):
|
|
Reporter.objects.create(first_name="Calculus")
|
|
raise Exception("Oops, that's his last name")
|
|
# The third insert couldn't be roll back. Temporarily mark the
|
|
# connection as not needing rollback to check it.
|
|
self.assertTrue(transaction.get_rollback())
|
|
transaction.set_rollback(False)
|
|
self.assertEqual(Reporter.objects.count(), 3)
|
|
transaction.set_rollback(True)
|
|
# The second block has a savepoint and must roll back.
|
|
self.assertEqual(Reporter.objects.count(), 1)
|
|
self.assertQuerysetEqual(Reporter.objects.all(), ['<Reporter: Tintin>'])
|
|
|
|
|
|
@skipUnless(connection.features.uses_savepoints,
|
|
"'atomic' requires transactions and savepoints.")
|
|
class AtomicErrorsTests(TransactionTestCase):
|
|
|
|
available_apps = ['transactions']
|
|
|
|
def test_atomic_prevents_setting_autocommit(self):
|
|
autocommit = transaction.get_autocommit()
|
|
with transaction.atomic():
|
|
with self.assertRaises(transaction.TransactionManagementError):
|
|
transaction.set_autocommit(not autocommit)
|
|
# Make sure autocommit wasn't changed.
|
|
self.assertEqual(connection.autocommit, autocommit)
|
|
|
|
def test_atomic_prevents_calling_transaction_methods(self):
|
|
with transaction.atomic():
|
|
with self.assertRaises(transaction.TransactionManagementError):
|
|
transaction.commit()
|
|
with self.assertRaises(transaction.TransactionManagementError):
|
|
transaction.rollback()
|
|
|
|
def test_atomic_prevents_calling_transaction_management_methods(self):
|
|
with transaction.atomic():
|
|
with self.assertRaises(transaction.TransactionManagementError):
|
|
transaction.enter_transaction_management()
|
|
with self.assertRaises(transaction.TransactionManagementError):
|
|
transaction.leave_transaction_management()
|
|
|
|
def test_atomic_prevents_queries_in_broken_transaction(self):
|
|
r1 = Reporter.objects.create(first_name="Archibald", last_name="Haddock")
|
|
with transaction.atomic():
|
|
r2 = Reporter(first_name="Cuthbert", last_name="Calculus", id=r1.id)
|
|
with self.assertRaises(IntegrityError):
|
|
r2.save(force_insert=True)
|
|
# The transaction is marked as needing rollback.
|
|
with self.assertRaises(transaction.TransactionManagementError):
|
|
r2.save(force_update=True)
|
|
self.assertEqual(Reporter.objects.get(pk=r1.pk).last_name, "Haddock")
|
|
|
|
@skipIfDBFeature('atomic_transactions')
|
|
def test_atomic_allows_queries_after_fixing_transaction(self):
|
|
r1 = Reporter.objects.create(first_name="Archibald", last_name="Haddock")
|
|
with transaction.atomic():
|
|
r2 = Reporter(first_name="Cuthbert", last_name="Calculus", id=r1.id)
|
|
with self.assertRaises(IntegrityError):
|
|
r2.save(force_insert=True)
|
|
# Mark the transaction as no longer needing rollback.
|
|
transaction.set_rollback(False)
|
|
r2.save(force_update=True)
|
|
self.assertEqual(Reporter.objects.get(pk=r1.pk).last_name, "Calculus")
|
|
|
|
|
|
class AtomicMiscTests(TransactionTestCase):
|
|
|
|
available_apps = []
|
|
|
|
def test_wrap_callable_instance(self):
|
|
# Regression test for #20028
|
|
class Callable(object):
|
|
def __call__(self):
|
|
pass
|
|
# Must not raise an exception
|
|
transaction.atomic(Callable())
|
|
|
|
|
|
class TransactionTests(IgnoreDeprecationWarningsMixin, TransactionTestCase):
|
|
|
|
available_apps = ['transactions']
|
|
|
|
def create_a_reporter_then_fail(self, first, last):
|
|
a = Reporter(first_name=first, last_name=last)
|
|
a.save()
|
|
raise Exception("I meant to do that")
|
|
|
|
def remove_a_reporter(self, first_name):
|
|
r = Reporter.objects.get(first_name="Alice")
|
|
r.delete()
|
|
|
|
def manually_managed(self):
|
|
r = Reporter(first_name="Dirk", last_name="Gently")
|
|
r.save()
|
|
transaction.commit()
|
|
|
|
def manually_managed_mistake(self):
|
|
r = Reporter(first_name="Edward", last_name="Woodward")
|
|
r.save()
|
|
# Oops, I forgot to commit/rollback!
|
|
|
|
@skipUnlessDBFeature('supports_transactions')
|
|
def test_autocommit(self):
|
|
"""
|
|
The default behavior is to autocommit after each save() action.
|
|
"""
|
|
self.assertRaises(
|
|
Exception,
|
|
self.create_a_reporter_then_fail,
|
|
"Alice", "Smith"
|
|
)
|
|
|
|
# The object created before the exception still exists
|
|
self.assertEqual(Reporter.objects.count(), 1)
|
|
|
|
@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(IgnoreDeprecationWarningsMixin, TransactionTestCase):
|
|
|
|
available_apps = ['transactions']
|
|
|
|
def execute_bad_sql(self):
|
|
with connection.cursor() as 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(IgnoreDeprecationWarningsMixin, 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():
|
|
with connection.cursor() as cursor:
|
|
cursor.execute("INSERT INTO transactions_reporter (first_name, last_name) VALUES ('Douglas', 'Adams');")
|
|
transaction.rollback()
|