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"""
TestCases for checking that it does not segfault when a DBEnv object
is closed before its DB objects.
"""
import sys, os, string
from pprint import pprint
import tempfile
import glob
import unittest
from bsddb import db
from test.test_support import verbose
#----------------------------------------------------------------------
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"
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
# this should not raise an exception, it should silently skip
# the db->close() call as it can't be done safely.
del d
try:
import gc
except ImportError:
gc = None
if gc:
# force d.__del__ [DB_dealloc] to be called
gc.collect()
#----------------------------------------------------------------------
def suite():
return unittest.makeSuite(DBEnvClosedEarlyCrash)
if __name__ == '__main__':
unittest.main( defaultTest='suite' )
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