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"""TestCases for checking that it does not segfault when a DBEnv object
is closed before its DB objects.
"""
import os
import sys
import tempfile
import glob
import unittest
try:
# For Pythons w/distutils pybsddb
from bsddb3 import db
except ImportError:
# For Python 2.3
from bsddb import db
from .test_all import verbose
# We're going to get warnings in this module about trying to close the db when
# its env is already closed. Let's just ignore those.
try:
import warnings
except ImportError:
pass
else:
warnings.filterwarnings('ignore',
message='DB could not be closed in',
category=RuntimeWarning)
#----------------------------------------------------------------------
class DBEnvClosedEarlyCrash(unittest.TestCase):
def setUp(self):
self.homeDir = os.path.join(os.path.dirname(sys.argv[0]), 'db_home')
try: os.mkdir(self.homeDir)
except os.error: pass
tempfile.tempdir = self.homeDir
self.filename = os.path.split(tempfile.mktemp())[1]
tempfile.tempdir = None
def tearDown(self):
files = glob.glob(os.path.join(self.homeDir, '*'))
for file in files:
os.remove(file)
def test01_close_dbenv_before_db(self):
dbenv = db.DBEnv()
dbenv.open(self.homeDir,
db.DB_INIT_CDB| db.DB_CREATE |db.DB_THREAD|db.DB_INIT_MPOOL,
0666)
d = db.DB(dbenv)
d.open(self.filename, db.DB_BTREE, db.DB_CREATE | db.DB_THREAD, 0666)
try:
dbenv.close()
except db.DBError:
try:
d.close()
except db.DBError:
return
assert 0, \
"DB close did not raise an exception about its "\
"DBEnv being trashed"
# XXX This may fail when using older versions of BerkeleyDB.
# E.g. 3.2.9 never raised the exception.
assert 0, "dbenv did not raise an exception about its DB being open"
def test02_close_dbenv_delete_db_success(self):
dbenv = db.DBEnv()
dbenv.open(self.homeDir,
db.DB_INIT_CDB| db.DB_CREATE |db.DB_THREAD|db.DB_INIT_MPOOL,
0666)
d = db.DB(dbenv)
d.open(self.filename, db.DB_BTREE, db.DB_CREATE | db.DB_THREAD, 0666)
try:
dbenv.close()
except db.DBError:
pass # good, it should raise an exception
del d
try:
import gc
except ImportError:
gc = None
if gc:
# force d.__del__ [DB_dealloc] to be called
gc.collect()
#----------------------------------------------------------------------
def test_suite():
suite = unittest.TestSuite()
suite.addTest(unittest.makeSuite(DBEnvClosedEarlyCrash))
return suite
if __name__ == '__main__':
unittest.main(defaultTest='test_suite')
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