/usr/lib/python2.7/dist-packages/transaction/tests/test__transaction.py is in python-transaction 1.4.3-3.
This file is owned by root:root, with mode 0o644.
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#
# Copyright (c) 2001, 2002, 2005 Zope Foundation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE
#
##############################################################################
"""Test transaction behavior for variety of cases.
I wrote these unittests to investigate some odd transaction
behavior when doing unittests of integrating non sub transaction
aware objects, and to insure proper txn behavior. these
tests test the transaction system independent of the rest of the
zodb.
you can see the method calls to a jar by passing the
keyword arg tracing to the modify method of a dataobject.
the value of the arg is a prefix used for tracing print calls
to that objects jar.
the number of times a jar method was called can be inspected
by looking at an attribute of the jar that is the method
name prefixed with a c (count/check).
i've included some tracing examples for tests that i thought
were illuminating as doc strings below.
TODO
add in tests for objects which are modified multiple times,
for example an object that gets modified in multiple sub txns.
"""
import unittest
class TransactionTests(unittest.TestCase):
def _getTargetClass(self):
from transaction._transaction import Transaction
return Transaction
def _makeOne(self, synchronizers=None, manager=None):
return self._getTargetClass()(synchronizers, manager)
def test_ctor_defaults(self):
from transaction.weakset import WeakSet
from transaction.tests.common import DummyLogger
from transaction.tests.common import Monkey
from transaction import _transaction
logger = DummyLogger()
with Monkey(_transaction, _LOGGER=logger):
txn = self._makeOne()
self.assertTrue(isinstance(txn._synchronizers, WeakSet))
self.assertEqual(len(txn._synchronizers), 0)
self.assertTrue(txn._manager is None)
self.assertEqual(txn.user, "")
self.assertEqual(txn.description, "")
self.assertTrue(txn._savepoint2index is None)
self.assertEqual(txn._savepoint_index, 0)
self.assertEqual(txn._resources, [])
self.assertEqual(txn._adapters, {})
self.assertEqual(txn._voted, {})
self.assertEqual(txn._extension, {})
self.assertTrue(txn.log is logger)
self.assertEqual(len(logger._log), 1)
self.assertEqual(logger._log[0][0], 'debug')
self.assertEqual(logger._log[0][1], 'new transaction')
self.assertTrue(txn._failure_traceback is None)
self.assertEqual(txn._before_commit, [])
self.assertEqual(txn._after_commit, [])
def test_ctor_w_syncs(self):
from transaction.weakset import WeakSet
synchs = WeakSet()
txn = self._makeOne(synchronizers=synchs)
self.assertTrue(txn._synchronizers is synchs)
def test_isDoomed(self):
from transaction._transaction import Status
txn = self._makeOne()
self.assertFalse(txn.isDoomed())
txn.status = Status.DOOMED
self.assertTrue(txn.isDoomed())
def test_doom_active(self):
from transaction._transaction import Status
txn = self._makeOne()
txn.doom()
self.assertTrue(txn.isDoomed())
self.assertEqual(txn.status, Status.DOOMED)
def test_doom_invalid(self):
from transaction._transaction import Status
txn = self._makeOne()
for status in Status.COMMITTING, Status.COMMITTED, Status.COMMITFAILED:
txn.status = status
self.assertRaises(ValueError, txn.doom)
def test_doom_already_doomed(self):
from transaction._transaction import Status
txn = self._makeOne()
txn.status = Status.DOOMED
self.assertTrue(txn.isDoomed())
self.assertEqual(txn.status, Status.DOOMED)
def test__prior_operation_failed(self):
from transaction.interfaces import TransactionFailedError
from transaction.tests.common import assertRaisesEx
class _Traceback(object):
def getvalue(self):
return 'TRACEBACK'
txn = self._makeOne()
txn._failure_traceback = _Traceback()
err = assertRaisesEx(TransactionFailedError,
txn._prior_operation_failed)
self.assertTrue(str(err).startswith('An operation previously failed'))
self.assertTrue(str(err).endswith( "with traceback:\n\nTRACEBACK"))
def test_join_COMMITFAILED(self):
from transaction.interfaces import TransactionFailedError
from transaction._transaction import Status
class _Traceback(object):
def getvalue(self):
return 'TRACEBACK'
txn = self._makeOne()
txn.status = Status.COMMITFAILED
txn._failure_traceback = _Traceback()
self.assertRaises(TransactionFailedError, txn.join, object())
def test_join_COMMITTING(self):
from transaction._transaction import Status
txn = self._makeOne()
txn.status = Status.COMMITTING
self.assertRaises(ValueError, txn.join, object())
def test_join_COMMITTED(self):
from transaction._transaction import Status
txn = self._makeOne()
txn.status = Status.COMMITTED
self.assertRaises(ValueError, txn.join, object())
def test_join_DOOMED_non_preparing_wo_sp2index(self):
from transaction._transaction import Status
txn = self._makeOne()
txn.status = Status.DOOMED
resource = object()
txn.join(resource)
self.assertEqual(txn._resources, [resource])
def test_join_ACTIVE_w_preparing_w_sp2index(self):
from transaction._transaction import AbortSavepoint
from transaction._transaction import DataManagerAdapter
class _TSP(object):
def __init__(self):
self._savepoints = []
class _DM(object):
def prepare(self):
pass
txn = self._makeOne()
tsp = _TSP()
txn._savepoint2index = {tsp: object()}
dm = _DM
txn.join(dm)
self.assertEqual(len(txn._resources), 1)
dma = txn._resources[0]
self.assertTrue(isinstance(dma, DataManagerAdapter))
self.assertTrue(txn._resources[0]._datamanager is dm)
self.assertEqual(len(tsp._savepoints), 1)
self.assertTrue(isinstance(tsp._savepoints[0], AbortSavepoint))
self.assertTrue(tsp._savepoints[0].datamanager is dma)
self.assertTrue(tsp._savepoints[0].transaction is txn)
def test__unjoin_miss(self):
txn = self._makeOne()
txn._unjoin(object()) #no raise
def test__unjoin_hit(self):
txn = self._makeOne()
resource = object()
txn._resources.append(resource)
txn._unjoin(resource)
self.assertEqual(txn._resources, [])
def test_savepoint_COMMITFAILED(self):
from transaction.interfaces import TransactionFailedError
from transaction._transaction import Status
class _Traceback(object):
def getvalue(self):
return 'TRACEBACK'
txn = self._makeOne()
txn.status = Status.COMMITFAILED
txn._failure_traceback = _Traceback()
self.assertRaises(TransactionFailedError, txn.savepoint)
def test_savepoint_empty(self):
from weakref import WeakKeyDictionary
from transaction import _transaction
from transaction._transaction import Savepoint
from transaction.tests.common import DummyLogger
from transaction.tests.common import Monkey
logger = DummyLogger()
with Monkey(_transaction, _LOGGER=logger):
txn = self._makeOne()
sp = txn.savepoint()
self.assertTrue(isinstance(sp, Savepoint))
self.assertTrue(sp.transaction is txn)
self.assertEqual(sp._savepoints, [])
self.assertEqual(txn._savepoint_index, 1)
self.assertTrue(isinstance(txn._savepoint2index, WeakKeyDictionary))
self.assertEqual(txn._savepoint2index[sp], 1)
def test_savepoint_non_optimistc_resource_wo_support(self):
from transaction import _transaction
from transaction._transaction import Status
from transaction._compat import StringIO
from transaction.tests.common import DummyLogger
from transaction.tests.common import Monkey
logger = DummyLogger()
with Monkey(_transaction, _LOGGER=logger):
txn = self._makeOne()
logger._clear()
resource = object()
txn._resources.append(resource)
self.assertRaises(TypeError, txn.savepoint)
self.assertEqual(txn.status, Status.COMMITFAILED)
self.assertTrue(isinstance(txn._failure_traceback, StringIO))
self.assertTrue('TypeError' in txn._failure_traceback.getvalue())
self.assertEqual(len(logger._log), 2)
self.assertEqual(logger._log[0][0], 'error')
self.assertTrue(logger._log[0][1].startswith('Error in abort'))
self.assertEqual(logger._log[1][0], 'error')
self.assertTrue(logger._log[1][1].startswith('Error in tpc_abort'))
def test__remove_and_invalidate_after_miss(self):
from weakref import WeakKeyDictionary
txn = self._makeOne()
txn._savepoint2index = WeakKeyDictionary()
class _SP(object):
def __init__(self, txn):
self.transaction = txn
holdme = []
for i in range(10):
sp = _SP(txn)
holdme.append(sp) #prevent gc
txn._savepoint2index[sp] = i
self.assertEqual(len(txn._savepoint2index), 10)
self.assertRaises(KeyError, txn._remove_and_invalidate_after, _SP(txn))
self.assertEqual(len(txn._savepoint2index), 10)
def test__remove_and_invalidate_after_hit(self):
from weakref import WeakKeyDictionary
txn = self._makeOne()
txn._savepoint2index = WeakKeyDictionary()
class _SP(object):
def __init__(self, txn, index):
self.transaction = txn
self._index = index
def __lt__(self, other):
return self._index < other._index
def __repr__(self):
return '_SP: %d' % self._index
holdme = []
for i in range(10):
sp = _SP(txn, i)
holdme.append(sp) #prevent gc
txn._savepoint2index[sp] = i
self.assertEqual(len(txn._savepoint2index), 10)
txn._remove_and_invalidate_after(holdme[1])
self.assertEqual(sorted(txn._savepoint2index), sorted(holdme[:2]))
def test__invalidate_all_savepoints(self):
from weakref import WeakKeyDictionary
txn = self._makeOne()
txn._savepoint2index = WeakKeyDictionary()
class _SP(object):
def __init__(self, txn, index):
self.transaction = txn
self._index = index
def __repr__(self):
return '_SP: %d' % self._index
holdme = []
for i in range(10):
sp = _SP(txn, i)
holdme.append(sp) #prevent gc
txn._savepoint2index[sp] = i
self.assertEqual(len(txn._savepoint2index), 10)
txn._invalidate_all_savepoints()
self.assertEqual(list(txn._savepoint2index), [])
def test_register_wo_jar(self):
class _Dummy(object):
_p_jar = None
txn = self._makeOne()
self.assertRaises(ValueError, txn.register, _Dummy())
def test_register_w_jar(self):
class _Manager(object):
pass
mgr = _Manager()
class _Dummy(object):
_p_jar = mgr
txn = self._makeOne()
dummy = _Dummy()
txn.register(dummy)
resources = list(txn._resources)
self.assertEqual(len(resources), 1)
adapter = resources[0]
self.assertTrue(adapter.manager is mgr)
self.assertTrue(dummy in adapter.objects)
items = list(txn._adapters.items())
self.assertEqual(len(items), 1)
self.assertTrue(items[0][0] is mgr)
self.assertTrue(items[0][1] is adapter)
def test_register_w_jar_already_adapted(self):
class _Adapter(object):
def __init__(self):
self.objects = []
class _Manager(object):
pass
mgr = _Manager()
class _Dummy(object):
_p_jar = mgr
txn = self._makeOne()
txn._adapters[mgr] = adapter = _Adapter()
dummy = _Dummy()
txn.register(dummy)
self.assertTrue(dummy in adapter.objects)
def test_commit_DOOMED(self):
from transaction.interfaces import DoomedTransaction
from transaction._transaction import Status
txn = self._makeOne()
txn.status = Status.DOOMED
self.assertRaises(DoomedTransaction, txn.commit)
def test_commit_COMMITFAILED(self):
from transaction._transaction import Status
from transaction.interfaces import TransactionFailedError
class _Traceback(object):
def getvalue(self):
return 'TRACEBACK'
txn = self._makeOne()
txn.status = Status.COMMITFAILED
txn._failure_traceback = _Traceback()
self.assertRaises(TransactionFailedError, txn.commit)
def test_commit_wo_savepoints_wo_hooks_wo_synchronizers(self):
from transaction._transaction import Status
from transaction.tests.common import DummyLogger
from transaction.tests.common import Monkey
from transaction import _transaction
class _Mgr(object):
def __init__(self, txn):
self._txn = txn
def free(self, txn):
assert txn is self._txn
self._txn = None
logger = DummyLogger()
with Monkey(_transaction, _LOGGER=logger):
txn = self._makeOne()
logger._clear()
mgr = txn._manager = _Mgr(txn)
txn.commit()
self.assertEqual(txn.status, Status.COMMITTED)
self.assertTrue(mgr._txn is None)
self.assertEqual(logger._log[0][0], 'debug')
self.assertEqual(logger._log[0][1], 'commit')
def test_commit_w_savepoints(self):
from weakref import WeakKeyDictionary
from transaction.tests.common import DummyLogger
from transaction.tests.common import Monkey
from transaction import _transaction
class _SP(object):
def __init__(self, txn, index):
self.transaction = txn
self._index = index
def __repr__(self):
return '_SP: %d' % self._index
logger = DummyLogger()
with Monkey(_transaction, _LOGGER=logger):
txn = self._makeOne()
txn._savepoint2index = WeakKeyDictionary()
holdme = []
for i in range(10):
sp = _SP(txn, i)
holdme.append(sp) #prevent gc
txn._savepoint2index[sp] = i
logger._clear()
txn.commit()
self.assertEqual(list(txn._savepoint2index), [])
def test_commit_w_beforeCommitHooks(self):
from transaction.tests.common import DummyLogger
from transaction.tests.common import Monkey
from transaction import _transaction
_hooked1, _hooked2 = [], []
def _hook1(*args, **kw):
_hooked1.append((args, kw))
def _hook2(*args, **kw):
_hooked2.append((args, kw))
logger = DummyLogger()
with Monkey(_transaction, _LOGGER=logger):
txn = self._makeOne()
txn._before_commit.append((_hook1, ('one',), {'uno': 1}))
txn._before_commit.append((_hook2, (), {}))
logger._clear()
txn.commit()
self.assertEqual(_hooked1, [(('one',), {'uno': 1})])
self.assertEqual(_hooked2, [((), {})])
self.assertEqual(txn._before_commit, [])
def test_commit_w_synchronizers(self):
from transaction.weakset import WeakSet
from transaction.tests.common import DummyLogger
from transaction.tests.common import Monkey
from transaction import _transaction
class _Synch(object):
_before = _after = False
def beforeCompletion(self, txn):
self._before = txn
def afterCompletion(self, txn):
self._after = txn
synchs = [_Synch(), _Synch(), _Synch()]
ws = WeakSet()
for synch in synchs:
ws.add(synch)
logger = DummyLogger()
with Monkey(_transaction, _LOGGER=logger):
txn = self._makeOne(synchronizers=ws)
logger._clear()
txn.commit()
for synch in synchs:
self.assertTrue(synch._before is txn)
self.assertTrue(synch._after is txn)
def test_commit_w_afterCommitHooks(self):
from transaction.tests.common import DummyLogger
from transaction.tests.common import Monkey
from transaction import _transaction
_hooked1, _hooked2 = [], []
def _hook1(*args, **kw):
_hooked1.append((args, kw))
def _hook2(*args, **kw):
_hooked2.append((args, kw))
logger = DummyLogger()
with Monkey(_transaction, _LOGGER=logger):
txn = self._makeOne()
txn._after_commit.append((_hook1, ('one',), {'uno': 1}))
txn._after_commit.append((_hook2, (), {}))
logger._clear()
txn.commit()
self.assertEqual(_hooked1, [((True, 'one',), {'uno': 1})])
self.assertEqual(_hooked2, [((True,), {})])
self.assertEqual(txn._after_commit, [])
def test_commit_error_w_afterCompleteHooks(self):
from transaction import _transaction
from transaction.tests.common import DummyLogger
from transaction.tests.common import Monkey
class BrokenResource(object):
def sortKey(self):
return 'zzz'
def tpc_begin(self, txn):
raise ValueError('test')
broken = BrokenResource()
resource = Resource('aaa')
_hooked1, _hooked2 = [], []
def _hook1(*args, **kw):
_hooked1.append((args, kw))
def _hook2(*args, **kw):
_hooked2.append((args, kw))
logger = DummyLogger()
with Monkey(_transaction, _LOGGER=logger):
txn = self._makeOne()
txn._after_commit.append((_hook1, ('one',), {'uno': 1}))
txn._after_commit.append((_hook2, (), {}))
txn._resources.append(broken)
txn._resources.append(resource)
logger._clear()
self.assertRaises(ValueError, txn.commit)
self.assertEqual(_hooked1, [((False, 'one',), {'uno': 1})])
self.assertEqual(_hooked2, [((False,), {})])
self.assertEqual(txn._after_commit, [])
self.assertTrue(resource._b)
self.assertFalse(resource._c)
self.assertFalse(resource._v)
self.assertFalse(resource._f)
self.assertTrue(resource._a)
self.assertTrue(resource._x)
def test_commit_error_w_synchronizers(self):
from transaction.weakset import WeakSet
from transaction.tests.common import DummyLogger
from transaction.tests.common import Monkey
from transaction import _transaction
class _Synch(object):
_before = _after = False
def beforeCompletion(self, txn):
self._before = txn
def afterCompletion(self, txn):
self._after = txn
synchs = [_Synch(), _Synch(), _Synch()]
ws = WeakSet()
for synch in synchs:
ws.add(synch)
class BrokenResource(object):
def sortKey(self):
return 'zzz'
def tpc_begin(self, txn):
raise ValueError('test')
broken = BrokenResource()
logger = DummyLogger()
with Monkey(_transaction, _LOGGER=logger):
txn = self._makeOne(synchronizers=ws)
logger._clear()
txn._resources.append(broken)
self.assertRaises(ValueError, txn.commit)
for synch in synchs:
self.assertTrue(synch._before is txn)
self.assertTrue(synch._after is txn) #called in _cleanup
def test_getBeforeCommitHooks_empty(self):
txn = self._makeOne()
self.assertEqual(list(txn.getBeforeCommitHooks()), [])
def test_addBeforeCommitHook(self):
def _hook(*args, **kw):
pass
txn = self._makeOne()
txn.addBeforeCommitHook(_hook, ('one',), dict(uno=1))
self.assertEqual(list(txn.getBeforeCommitHooks()),
[(_hook, ('one',), {'uno': 1})])
def test_addBeforeCommitHook_w_kws(self):
def _hook(*args, **kw):
pass
txn = self._makeOne()
txn.addBeforeCommitHook(_hook, ('one',))
self.assertEqual(list(txn.getBeforeCommitHooks()),
[(_hook, ('one',), {})])
def test_getAfterCommitHooks_empty(self):
txn = self._makeOne()
self.assertEqual(list(txn.getAfterCommitHooks()), [])
def test_addAfterCommitHook(self):
def _hook(*args, **kw):
pass
txn = self._makeOne()
txn.addAfterCommitHook(_hook, ('one',), dict(uno=1))
self.assertEqual(list(txn.getAfterCommitHooks()),
[(_hook, ('one',), {'uno': 1})])
def test_addAfterCommitHook_wo_kws(self):
def _hook(*args, **kw):
pass
txn = self._makeOne()
txn.addAfterCommitHook(_hook, ('one',))
self.assertEqual(list(txn.getAfterCommitHooks()),
[(_hook, ('one',), {})])
def test_callAfterCommitHook_w_error(self):
from transaction.tests.common import DummyLogger
from transaction.tests.common import Monkey
from transaction import _transaction
_hooked2 = []
def _hook1(*args, **kw):
raise ValueError()
def _hook2(*args, **kw):
_hooked2.append((args, kw))
logger = DummyLogger()
with Monkey(_transaction, _LOGGER=logger):
txn = self._makeOne()
logger._clear()
txn.addAfterCommitHook(_hook1, ('one',))
txn.addAfterCommitHook(_hook2, ('two',), dict(dos=2))
txn._callAfterCommitHooks()
# second hook gets called even if first raises
self.assertEqual(_hooked2, [((True, 'two',), {'dos': 2})])
self.assertEqual(len(logger._log), 1)
self.assertEqual(logger._log[0][0], 'error')
self.assertTrue(logger._log[0][1].startswith(
"Error in after commit hook"))
def test_callAfterCommitHook_w_abort(self):
from transaction.tests.common import DummyLogger
from transaction.tests.common import Monkey
from transaction import _transaction
_hooked2 = []
def _hook1(*args, **kw):
raise ValueError()
def _hook2(*args, **kw):
_hooked2.append((args, kw))
logger = DummyLogger()
with Monkey(_transaction, _LOGGER=logger):
txn = self._makeOne()
logger._clear()
txn.addAfterCommitHook(_hook1, ('one',))
txn.addAfterCommitHook(_hook2, ('two',), dict(dos=2))
txn._callAfterCommitHooks()
self.assertEqual(logger._log[0][0], 'error')
self.assertTrue(logger._log[0][1].startswith(
"Error in after commit hook"))
def test__commitResources_normal(self):
from transaction.tests.common import DummyLogger
from transaction.tests.common import Monkey
from transaction import _transaction
resources = [Resource('bbb'), Resource('aaa')]
logger = DummyLogger()
with Monkey(_transaction, _LOGGER=logger):
txn = self._makeOne()
logger._clear()
txn._resources.extend(resources)
txn._commitResources()
self.assertEqual(len(txn._voted), 2)
for r in resources:
self.assertTrue(r._b and r._c and r._v and r._f)
self.assertFalse(r._a and r._x)
self.assertTrue(id(r) in txn._voted)
self.assertEqual(len(logger._log), 2)
self.assertEqual(logger._log[0][0], 'debug')
self.assertEqual(logger._log[0][1], 'commit Resource: aaa')
self.assertEqual(logger._log[1][0], 'debug')
self.assertEqual(logger._log[1][1], 'commit Resource: bbb')
def test__commitResources_error_in_tpc_begin(self):
from transaction.tests.common import DummyLogger
from transaction.tests.common import Monkey
from transaction import _transaction
resources = [Resource('bbb', 'tpc_begin'), Resource('aaa')]
logger = DummyLogger()
with Monkey(_transaction, _LOGGER=logger):
txn = self._makeOne()
logger._clear()
txn._resources.extend(resources)
self.assertRaises(ValueError, txn._commitResources)
for r in resources:
if r._key == 'aaa':
self.assertTrue(r._b)
else:
self.assertFalse(r._b)
self.assertFalse(r._c and r._v and r._f)
self.assertTrue(r._a and r._x)
self.assertEqual(len(logger._log), 0)
def test__commitResources_error_in_commit(self):
from transaction.tests.common import DummyLogger
from transaction.tests.common import Monkey
from transaction import _transaction
resources = [Resource('bbb', 'commit'), Resource('aaa')]
logger = DummyLogger()
with Monkey(_transaction, _LOGGER=logger):
txn = self._makeOne()
logger._clear()
txn._resources.extend(resources)
self.assertRaises(ValueError, txn._commitResources)
for r in resources:
self.assertTrue(r._b)
if r._key == 'aaa':
self.assertTrue(r._c)
else:
self.assertFalse(r._c)
self.assertFalse(r._v and r._f)
self.assertTrue(r._a and r._x)
self.assertEqual(len(logger._log), 1)
self.assertEqual(logger._log[0][0], 'debug')
self.assertEqual(logger._log[0][1], 'commit Resource: aaa')
def test__commitResources_error_in_tpc_vote(self):
from transaction.tests.common import DummyLogger
from transaction.tests.common import Monkey
from transaction import _transaction
resources = [Resource('bbb', 'tpc_vote'), Resource('aaa')]
logger = DummyLogger()
with Monkey(_transaction, _LOGGER=logger):
txn = self._makeOne()
logger._clear()
txn._resources.extend(resources)
self.assertRaises(ValueError, txn._commitResources)
self.assertEqual(len(txn._voted), 1)
for r in resources:
self.assertTrue(r._b and r._c)
if r._key == 'aaa':
self.assertTrue(id(r) in txn._voted)
self.assertTrue(r._v)
self.assertFalse(r._f)
self.assertFalse(r._a)
self.assertTrue(r._x)
else:
self.assertFalse(id(r) in txn._voted)
self.assertFalse(r._v)
self.assertFalse(r._f)
self.assertTrue(r._a and r._x)
self.assertEqual(len(logger._log), 2)
self.assertEqual(logger._log[0][0], 'debug')
self.assertEqual(logger._log[0][1], 'commit Resource: aaa')
self.assertEqual(logger._log[1][0], 'debug')
self.assertEqual(logger._log[1][1], 'commit Resource: bbb')
def test__commitResources_error_in_tpc_finish(self):
from transaction.tests.common import DummyLogger
from transaction.tests.common import Monkey
from transaction import _transaction
resources = [Resource('bbb', 'tpc_finish'), Resource('aaa')]
logger = DummyLogger()
with Monkey(_transaction, _LOGGER=logger):
txn = self._makeOne()
logger._clear()
txn._resources.extend(resources)
self.assertRaises(ValueError, txn._commitResources)
for r in resources:
self.assertTrue(r._b and r._c and r._v)
self.assertTrue(id(r) in txn._voted)
if r._key == 'aaa':
self.assertTrue(r._f)
else:
self.assertFalse(r._f)
self.assertFalse(r._a and r._x) #no cleanup if tpc_finish raises
self.assertEqual(len(logger._log), 3)
self.assertEqual(logger._log[0][0], 'debug')
self.assertEqual(logger._log[0][1], 'commit Resource: aaa')
self.assertEqual(logger._log[1][0], 'debug')
self.assertEqual(logger._log[1][1], 'commit Resource: bbb')
self.assertEqual(logger._log[2][0], 'critical')
self.assertTrue(logger._log[2][1].startswith(
'A storage error occurred'))
def test_abort_wo_savepoints_wo_hooks_wo_synchronizers(self):
from transaction._transaction import Status
from transaction.tests.common import DummyLogger
from transaction.tests.common import Monkey
from transaction import _transaction
class _Mgr(object):
def __init__(self, txn):
self._txn = txn
def free(self, txn):
assert txn is self._txn
self._txn = None
logger = DummyLogger()
with Monkey(_transaction, _LOGGER=logger):
txn = self._makeOne()
logger._clear()
mgr = txn._manager = _Mgr(txn)
txn.abort()
self.assertEqual(txn.status, Status.ACTIVE)
self.assertTrue(mgr._txn is None)
self.assertEqual(logger._log[0][0], 'debug')
self.assertEqual(logger._log[0][1], 'abort')
def test_abort_w_savepoints(self):
from weakref import WeakKeyDictionary
from transaction.tests.common import DummyLogger
from transaction.tests.common import Monkey
from transaction import _transaction
class _SP(object):
def __init__(self, txn, index):
self.transaction = txn
self._index = index
def __repr__(self):
return '_SP: %d' % self._index
logger = DummyLogger()
with Monkey(_transaction, _LOGGER=logger):
txn = self._makeOne()
txn._savepoint2index = WeakKeyDictionary()
holdme = []
for i in range(10):
sp = _SP(txn, i)
holdme.append(sp) #prevent gc
txn._savepoint2index[sp] = i
logger._clear()
txn.abort()
self.assertEqual(list(txn._savepoint2index), [])
def test_abort_w_beforeCommitHooks(self):
from transaction.tests.common import DummyLogger
from transaction.tests.common import Monkey
from transaction import _transaction
_hooked1, _hooked2 = [], []
def _hook1(*args, **kw):
_hooked1.append((args, kw))
def _hook2(*args, **kw):
_hooked2.append((args, kw))
logger = DummyLogger()
with Monkey(_transaction, _LOGGER=logger):
txn = self._makeOne()
txn._before_commit.append((_hook1, ('one',), {'uno': 1}))
txn._before_commit.append((_hook2, (), {}))
logger._clear()
txn.abort()
self.assertEqual(_hooked1, [])
self.assertEqual(_hooked2, [])
# Hooks are neither called nor cleared on abort
self.assertEqual(list(txn.getBeforeCommitHooks()),
[(_hook1, ('one',), {'uno': 1}), (_hook2, (), {})])
def test_abort_w_synchronizers(self):
from transaction.weakset import WeakSet
from transaction.tests.common import DummyLogger
from transaction.tests.common import Monkey
from transaction import _transaction
class _Synch(object):
_before = _after = False
def beforeCompletion(self, txn):
self._before = txn
def afterCompletion(self, txn):
self._after = txn
synchs = [_Synch(), _Synch(), _Synch()]
ws = WeakSet()
for synch in synchs:
ws.add(synch)
logger = DummyLogger()
with Monkey(_transaction, _LOGGER=logger):
txn = self._makeOne(synchronizers=ws)
logger._clear()
txn.abort()
for synch in synchs:
self.assertTrue(synch._before is txn)
self.assertTrue(synch._after is txn)
def test_abort_w_afterCommitHooks(self):
from transaction.tests.common import DummyLogger
from transaction.tests.common import Monkey
from transaction import _transaction
_hooked1, _hooked2 = [], []
def _hook1(*args, **kw):
_hooked1.append((args, kw))
def _hook2(*args, **kw):
_hooked2.append((args, kw))
logger = DummyLogger()
with Monkey(_transaction, _LOGGER=logger):
txn = self._makeOne()
txn._after_commit.append((_hook1, ('one',), {'uno': 1}))
txn._after_commit.append((_hook2, (), {}))
logger._clear()
txn.abort()
# Hooks are neither called nor cleared on abort
self.assertEqual(_hooked1, [])
self.assertEqual(_hooked2, [])
self.assertEqual(list(txn.getAfterCommitHooks()),
[(_hook1, ('one',), {'uno': 1}), (_hook2, (), {})])
def test_abort_error_w_afterCompleteHooks(self):
from transaction import _transaction
from transaction.tests.common import DummyLogger
from transaction.tests.common import Monkey
class BrokenResource(object):
def sortKey(self):
return 'zzz'
def abort(self, txn):
raise ValueError('test')
broken = BrokenResource()
resource = Resource('aaa')
_hooked1, _hooked2 = [], []
def _hook1(*args, **kw):
_hooked1.append((args, kw))
def _hook2(*args, **kw):
_hooked2.append((args, kw))
logger = DummyLogger()
with Monkey(_transaction, _LOGGER=logger):
txn = self._makeOne()
txn._after_commit.append((_hook1, ('one',), {'uno': 1}))
txn._after_commit.append((_hook2, (), {}))
txn._resources.append(broken)
txn._resources.append(resource)
logger._clear()
self.assertRaises(ValueError, txn.abort)
# Hooks are neither called nor cleared on abort
self.assertEqual(_hooked1, [])
self.assertEqual(_hooked2, [])
self.assertEqual(list(txn.getAfterCommitHooks()),
[(_hook1, ('one',), {'uno': 1}), (_hook2, (), {})])
self.assertTrue(resource._a)
self.assertFalse(resource._x)
def test_abort_error_w_synchronizers(self):
from transaction.weakset import WeakSet
from transaction.tests.common import DummyLogger
from transaction.tests.common import Monkey
from transaction import _transaction
class _Synch(object):
_before = _after = False
def beforeCompletion(self, txn):
self._before = txn
def afterCompletion(self, txn):
self._after = txn
synchs = [_Synch(), _Synch(), _Synch()]
ws = WeakSet()
for synch in synchs:
ws.add(synch)
class BrokenResource(object):
def sortKey(self):
return 'zzz'
def abort(self, txn):
raise ValueError('test')
broken = BrokenResource()
logger = DummyLogger()
with Monkey(_transaction, _LOGGER=logger):
t = self._makeOne(synchronizers=ws)
logger._clear()
t._resources.append(broken)
self.assertRaises(ValueError, t.abort)
for synch in synchs:
self.assertTrue(synch._before is t)
self.assertTrue(synch._after is t) #called in _cleanup
def test_note(self):
txn = self._makeOne()
try:
txn.note('This is a note.')
self.assertEqual(txn.description, 'This is a note.')
txn.note('Another.')
self.assertEqual(txn.description, 'This is a note.\nAnother.')
finally:
txn.abort()
def test_setUser_default_path(self):
txn = self._makeOne()
txn.setUser('phreddy')
self.assertEqual(txn.user, '/ phreddy')
def test_setUser_explicit_path(self):
txn = self._makeOne()
txn.setUser('phreddy', '/bedrock')
self.assertEqual(txn.user, '/bedrock phreddy')
def test_setExtendedInfo_single(self):
txn = self._makeOne()
txn.setExtendedInfo('frob', 'qux')
self.assertEqual(txn._extension, {'frob': 'qux'})
def test_setExtendedInfo_multiple(self):
txn = self._makeOne()
txn.setExtendedInfo('frob', 'qux')
txn.setExtendedInfo('baz', 'spam')
txn.setExtendedInfo('frob', 'quxxxx')
self.assertEqual(txn._extension, {'frob': 'quxxxx', 'baz': 'spam'})
class MultiObjectResourceAdapterTests(unittest.TestCase):
def _getTargetClass(self):
from transaction._transaction import MultiObjectResourceAdapter
return MultiObjectResourceAdapter
def _makeOne(self, jar):
return self._getTargetClass()(jar)
def _makeJar(self, key):
class _Resource(Resource):
def __init__(self, key):
super(_Resource, self).__init__(key)
self._c = []
self._a = []
def commit(self, obj, txn):
self._c.append((obj, txn))
def abort(self, obj, txn):
self._a.append((obj, txn))
return _Resource(key)
def _makeDummy(self, kind, name):
class _Dummy(object):
def __init__(self, kind, name):
self._kind = kind
self._name = name
def __repr__(self):
return '<%s: %s>' % (self._kind, self._name)
return _Dummy(kind, name)
def test_ctor(self):
jar = self._makeJar('aaa')
mora = self._makeOne(jar)
self.assertTrue(mora.manager is jar)
self.assertEqual(mora.objects, [])
self.assertEqual(mora.ncommitted, 0)
def test___repr__(self):
jar = self._makeJar('bbb')
mora = self._makeOne(jar)
self.assertEqual(repr(mora),
'<MultiObjectResourceAdapter '
'for Resource: bbb at %s>' % id(mora))
def test_sortKey(self):
jar = self._makeJar('ccc')
mora = self._makeOne(jar)
self.assertEqual(mora.sortKey(), 'ccc')
def test_tpc_begin(self):
jar = self._makeJar('ddd')
mora = self._makeOne(jar)
txn = object()
mora.tpc_begin(txn)
self.assertTrue(jar._b)
def test_commit(self):
jar = self._makeJar('eee')
objects = [self._makeDummy('obj', 'a'), self._makeDummy('obj', 'b')]
mora = self._makeOne(jar)
mora.objects.extend(objects)
txn = self._makeDummy('txn', 'c')
mora.commit(txn)
self.assertEqual(jar._c, [(objects[0], txn), (objects[1], txn)])
def test_tpc_vote(self):
jar = self._makeJar('fff')
mora = self._makeOne(jar)
txn = object()
mora.tpc_vote(txn)
self.assertTrue(jar._v)
def test_tpc_finish(self):
jar = self._makeJar('ggg')
mora = self._makeOne(jar)
txn = object()
mora.tpc_finish(txn)
self.assertTrue(jar._f)
def test_abort(self):
jar = self._makeJar('hhh')
objects = [self._makeDummy('obj', 'a'), self._makeDummy('obj', 'b')]
mora = self._makeOne(jar)
mora.objects.extend(objects)
txn = self._makeDummy('txn', 'c')
mora.abort(txn)
self.assertEqual(jar._a, [(objects[0], txn), (objects[1], txn)])
def test_abort_w_error(self):
from transaction.tests.common import DummyLogger
jar = self._makeJar('hhh')
objects = [self._makeDummy('obj', 'a'),
self._makeDummy('obj', 'b'),
self._makeDummy('obj', 'c'),
]
_old_abort = jar.abort
def _abort(obj, txn):
if obj._name == 'b':
raise ValueError()
_old_abort(obj, txn)
jar.abort = _abort
mora = self._makeOne(jar)
mora.objects.extend(objects)
txn = self._makeDummy('txn', 'c')
txn.log = log = DummyLogger()
self.assertRaises(ValueError, mora.abort, txn)
self.assertEqual(jar._a, [(objects[0], txn), (objects[2], txn)])
def test_tpc_abort(self):
jar = self._makeJar('iii')
mora = self._makeOne(jar)
txn = object()
mora.tpc_abort(txn)
self.assertTrue(jar._x)
class Test_rm_key(unittest.TestCase):
def _callFUT(self, oid):
from transaction._transaction import rm_key
return rm_key(oid)
def test_miss(self):
self.assertTrue(self._callFUT(object()) is None)
def test_hit(self):
self.assertEqual(self._callFUT(Resource('zzz')), 'zzz')
class Test_object_hint(unittest.TestCase):
def _callFUT(self, oid):
from transaction._transaction import object_hint
return object_hint(oid)
def test_miss(self):
class _Test(object):
pass
test = _Test()
self.assertEqual(self._callFUT(test), "_Test oid=None")
def test_hit(self):
class _Test(object):
pass
test = _Test()
test._p_oid = 'OID'
self.assertEqual(self._callFUT(test), "_Test oid='OID'")
class Test_oid_repr(unittest.TestCase):
def _callFUT(self, oid):
from transaction._transaction import oid_repr
return oid_repr(oid)
def test_as_nonstring(self):
self.assertEqual(self._callFUT(123), '123')
def test_as_string_not_8_chars(self):
self.assertEqual(self._callFUT('a'), "'a'")
def test_as_string_z64(self):
s = '\0'*8
self.assertEqual(self._callFUT(s), '0x00')
def test_as_string_all_Fs(self):
s = '\1'*8
self.assertEqual(self._callFUT(s), '0x0101010101010101')
class DataManagerAdapterTests(unittest.TestCase):
def _getTargetClass(self):
from transaction._transaction import DataManagerAdapter
return DataManagerAdapter
def _makeOne(self, jar):
return self._getTargetClass()(jar)
def _makeJar(self, key):
class _Resource(Resource):
_p = False
def prepare(self, txn):
self._p = True
return _Resource(key)
def _makeDummy(self, kind, name):
class _Dummy(object):
def __init__(self, kind, name):
self._kind = kind
self._name = name
def __repr__(self):
return '<%s: %s>' % (self._kind, self._name)
return _Dummy(kind, name)
def test_ctor(self):
jar = self._makeJar('aaa')
dma = self._makeOne(jar)
self.assertTrue(dma._datamanager is jar)
def test_commit(self):
jar = self._makeJar('bbb')
mora = self._makeOne(jar)
txn = self._makeDummy('txn', 'c')
mora.commit(txn)
self.assertFalse(jar._c) #no-op
def test_abort(self):
jar = self._makeJar('ccc')
mora = self._makeOne(jar)
txn = self._makeDummy('txn', 'c')
mora.abort(txn)
self.assertTrue(jar._a)
def test_tpc_begin(self):
jar = self._makeJar('ddd')
mora = self._makeOne(jar)
txn = object()
mora.tpc_begin(txn)
self.assertFalse(jar._b) #no-op
def test_tpc_abort(self):
jar = self._makeJar('eee')
mora = self._makeOne(jar)
txn = object()
mora.tpc_abort(txn)
self.assertFalse(jar._f)
self.assertTrue(jar._a)
def test_tpc_finish(self):
jar = self._makeJar('fff')
mora = self._makeOne(jar)
txn = object()
mora.tpc_finish(txn)
self.assertFalse(jar._f)
self.assertTrue(jar._c)
def test_tpc_vote(self):
jar = self._makeJar('ggg')
mora = self._makeOne(jar)
txn = object()
mora.tpc_vote(txn)
self.assertFalse(jar._v)
self.assertTrue(jar._p)
def test_sortKey(self):
jar = self._makeJar('hhh')
mora = self._makeOne(jar)
self.assertEqual(mora.sortKey(), 'hhh')
class SavepointTests(unittest.TestCase):
def _getTargetClass(self):
from transaction._transaction import Savepoint
return Savepoint
def _makeOne(self, txn, optimistic, *resources):
return self._getTargetClass()(txn, optimistic, *resources)
def test_ctor_w_savepoint_oblivious_resource_non_optimistic(self):
txn = object()
resource = object()
self.assertRaises(TypeError, self._makeOne, txn, False, resource)
def test_ctor_w_savepoint_oblivious_resource_optimistic(self):
from transaction._transaction import NoRollbackSavepoint
txn = object()
resource = object()
sp = self._makeOne(txn, True, resource)
self.assertEqual(len(sp._savepoints), 1)
self.assertTrue(isinstance(sp._savepoints[0], NoRollbackSavepoint))
self.assertTrue(sp._savepoints[0].datamanager is resource)
def test_ctor_w_savepoint_aware_resources(self):
class _Aware(object):
def savepoint(self):
return self
txn = object()
one = _Aware()
another = _Aware()
sp = self._makeOne(txn, True, one, another)
self.assertEqual(len(sp._savepoints), 2)
self.assertTrue(isinstance(sp._savepoints[0], _Aware))
self.assertTrue(sp._savepoints[0] is one)
self.assertTrue(isinstance(sp._savepoints[1], _Aware))
self.assertTrue(sp._savepoints[1] is another)
def test_rollback_w_txn_None(self):
from transaction.interfaces import InvalidSavepointRollbackError
txn = None
class _Aware(object):
def savepoint(self):
return self
resource = _Aware()
sp = self._makeOne(txn, False, resource)
self.assertRaises(InvalidSavepointRollbackError, sp.rollback)
def test_rollback_w_sp_error(self):
class _TXN(object):
_sarce = False
_raia = None
def _saveAndRaiseCommitishError(self):
import sys
from transaction._compat import reraise
self._sarce = True
reraise(*sys.exc_info())
def _remove_and_invalidate_after(self, sp):
self._raia = sp
class _Broken(object):
def rollback(self):
raise ValueError()
_broken = _Broken()
class _GonnaRaise(object):
def savepoint(self):
return _broken
txn = _TXN()
resource = _GonnaRaise()
sp = self._makeOne(txn, False, resource)
self.assertRaises(ValueError, sp.rollback)
self.assertTrue(txn._raia is sp)
self.assertTrue(txn._sarce)
class AbortSavepointTests(unittest.TestCase):
def _getTargetClass(self):
from transaction._transaction import AbortSavepoint
return AbortSavepoint
def _makeOne(self, datamanager, transaction):
return self._getTargetClass()(datamanager, transaction)
def test_ctor(self):
dm = object()
txn = object()
asp = self._makeOne(dm, txn)
self.assertTrue(asp.datamanager is dm)
self.assertTrue(asp.transaction is txn)
def test_rollback(self):
class _DM(object):
_aborted = None
def abort(self, txn):
self._aborted = txn
class _TXN(object):
_unjoined = None
def _unjoin(self, datamanager):
self._unjoin = datamanager
dm = _DM()
txn = _TXN()
asp = self._makeOne(dm, txn)
asp.rollback()
self.assertTrue(dm._aborted is txn)
self.assertTrue(txn._unjoin is dm)
class NoRollbackSavepointTests(unittest.TestCase):
def _getTargetClass(self):
from transaction._transaction import NoRollbackSavepoint
return NoRollbackSavepoint
def _makeOne(self, datamanager):
return self._getTargetClass()(datamanager)
def test_ctor(self):
dm = object()
nrsp = self._makeOne(dm)
self.assertTrue(nrsp.datamanager is dm)
def test_rollback(self):
dm = object()
nrsp = self._makeOne(dm)
self.assertRaises(TypeError, nrsp.rollback)
class MiscellaneousTests(unittest.TestCase):
def test_BBB_join(self):
# The join method is provided for "backward-compatability" with ZODB 4
# data managers.
from transaction import Transaction
from transaction.tests.examples import DataManager
from transaction._transaction import DataManagerAdapter
# The argument to join must be a zodb4 data manager,
# transaction.interfaces.IDataManager.
txn = Transaction()
dm = DataManager()
txn.join(dm)
# The end result is that a data manager adapter is one of the
# transaction's objects:
self.assertTrue(isinstance(txn._resources[0], DataManagerAdapter))
self.assertTrue(txn._resources[0]._datamanager is dm)
def test_bug239086(self):
# The original implementation of thread transaction manager made
# invalid assumptions about thread ids.
import threading
import transaction
import transaction.tests.savepointsample as SPS
dm = SPS.SampleSavepointDataManager()
self.assertEqual(list(dm.keys()), [])
class Sync:
def __init__(self, label):
self.label = label
self.log = []
def beforeCompletion(self, txn):
self.log.append('%s %s' % (self.label, 'before'))
def afterCompletion(self, txn):
self.log.append('%s %s' % (self.label, 'after'))
def newTransaction(self, txn):
self.log.append('%s %s' % (self.label, 'new'))
def run_in_thread(f):
txn = threading.Thread(target=f)
txn.start()
txn.join()
sync = Sync(1)
@run_in_thread
def first():
transaction.manager.registerSynch(sync)
transaction.manager.begin()
dm['a'] = 1
self.assertEqual(sync.log, ['1 new'])
@run_in_thread
def second():
transaction.abort() # should do nothing.
self.assertEqual(sync.log, ['1 new'])
self.assertEqual(list(dm.keys()), ['a'])
dm = SPS.SampleSavepointDataManager()
self.assertEqual(list(dm.keys()), [])
@run_in_thread
def third():
dm['a'] = 1
self.assertEqual(sync.log, ['1 new'])
transaction.abort() # should do nothing
self.assertEqual(list(dm.keys()), ['a'])
class Resource(object):
_b = _c = _v = _f = _a = _x = False
def __init__(self, key, error=None):
self._key = key
self._error = error
def __repr__(self):
return 'Resource: %s' % self._key
def sortKey(self):
return self._key
def tpc_begin(self, txn):
if self._error == 'tpc_begin':
raise ValueError()
self._b = True
def commit(self, txn):
if self._error == 'commit':
raise ValueError()
self._c = True
def tpc_vote(self, txn):
if self._error == 'tpc_vote':
raise ValueError()
self._v = True
def tpc_finish(self, txn):
if self._error == 'tpc_finish':
raise ValueError()
self._f = True
def abort(self, txn):
if self._error == 'abort':
raise ValueError()
self._a = True
def tpc_abort(self, txn):
if self._error == 'tpc_abort':
raise ValueError()
self._x = True
def test_suite():
return unittest.TestSuite((
unittest.makeSuite(TransactionTests),
unittest.makeSuite(MultiObjectResourceAdapterTests),
unittest.makeSuite(Test_rm_key),
unittest.makeSuite(Test_object_hint),
unittest.makeSuite(Test_oid_repr),
unittest.makeSuite(DataManagerAdapterTests),
unittest.makeSuite(SavepointTests),
unittest.makeSuite(AbortSavepointTests),
unittest.makeSuite(NoRollbackSavepointTests),
unittest.makeSuite(MiscellaneousTests),
))
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