import unittest
import os
from test_all import db, test_support, get_new_environment_path, get_new_database_path
class DBSequenceTest(unittest.TestCase):
def setUp(self):
self.int_32_max = 0x100000000
self.homeDir = get_new_environment_path()
self.filename = "test"
self.dbenv = db.DBEnv()
self.dbenv.open(self.homeDir, db.DB_CREATE | db.DB_INIT_MPOOL, 0666)
self.d = db.DB(self.dbenv)
self.d.open(self.filename, db.DB_BTREE, db.DB_CREATE, 0666)
def tearDown(self):
if hasattr(self, 'seq'):
self.seq.close()
del self.seq
if hasattr(self, 'd'):
self.d.close()
del self.d
if hasattr(self, 'dbenv'):
self.dbenv.close()
del self.dbenv
test_support.rmtree(self.homeDir)
def test_get(self):
self.seq = db.DBSequence(self.d, flags=0)
start_value = 10 * self.int_32_max
self.assertEqual(0xA00000000, start_value)
self.assertEqual(None, self.seq.initial_value(start_value))
self.assertEqual(None, self.seq.open(key='id', txn=None, flags=db.DB_CREATE))
self.assertEqual(start_value, self.seq.get(5))
self.assertEqual(start_value + 5, self.seq.get())
def test_remove(self):
self.seq = db.DBSequence(self.d, flags=0)
self.assertEqual(None, self.seq.open(key='foo', txn=None, flags=db.DB_CREATE))
self.assertEqual(None, self.seq.remove(txn=None, flags=0))
del self.seq
def test_get_key(self):
self.seq = db.DBSequence(self.d, flags=0)
key = 'foo'
self.assertEqual(None, self.seq.open(key=key, txn=None, flags=db.DB_CREATE))
self.assertEqual(key, self.seq.get_key())
def test_get_dbp(self):
self.seq = db.DBSequence(self.d, flags=0)
self.assertEqual(None, self.seq.open(key='foo', txn=None, flags=db.DB_CREATE))
self.assertEqual(self.d, self.seq.get_dbp())
def test_cachesize(self):
self.seq = db.DBSequence(self.d, flags=0)
cashe_size = 10
self.assertEqual(None, self.seq.set_cachesize(cashe_size))
self.assertEqual(None, self.seq.open(key='foo', txn=None, flags=db.DB_CREATE))
self.assertEqual(cashe_size, self.seq.get_cachesize())
def test_flags(self):
self.seq = db.DBSequence(self.d, flags=0)
flag = db.DB_SEQ_WRAP;
self.assertEqual(None, self.seq.set_flags(flag))
self.assertEqual(None, self.seq.open(key='foo', txn=None, flags=db.DB_CREATE))
self.assertEqual(flag, self.seq.get_flags() & flag)
def test_range(self):
self.seq = db.DBSequence(self.d, flags=0)
seq_range = (10 * self.int_32_max, 11 * self.int_32_max - 1)
self.assertEqual(None, self.seq.set_range(seq_range))
self.seq.initial_value(seq_range[0])
self.assertEqual(None, self.seq.open(key='foo', txn=None, flags=db.DB_CREATE))
self.assertEqual(seq_range, self.seq.get_range())
def test_stat(self):
self.seq = db.DBSequence(self.d, flags=0)
self.assertEqual(None, self.seq.open(key='foo', txn=None, flags=db.DB_CREATE))
stat = self.seq.stat()
for param in ('nowait', 'min', 'max', 'value', 'current',
'flags', 'cache_size', 'last_value', 'wait'):
self.assertTrue(param in stat, "parameter %s isn't in stat info" % param)
if db.version() >= (4,7) :
# This code checks a crash solved in Berkeley DB 4.7
def test_stat_crash(self) :
d=db.DB()
d.open(None,dbtype=db.DB_HASH,flags=db.DB_CREATE) # In RAM
seq = db.DBSequence(d, flags=0)
self.assertRaises(db.DBNotFoundError, seq.open,
key='id', txn=None, flags=0)
self.assertRaises(db.DBInvalidArgError, seq.stat)
d.close()
def test_64bits(self) :
# We don't use both extremes because they are problematic
value_plus=(1L<<63)-2
self.assertEqual(9223372036854775806L,value_plus)
value_minus=(-1L<<63)+1 # Two complement
self.assertEqual(-9223372036854775807L,value_minus)
self.seq = db.DBSequence(self.d, flags=0)
self.assertEqual(None, self.seq.initial_value(value_plus-1))
self.assertEqual(None, self.seq.open(key='id', txn=None,
flags=db.DB_CREATE))
self.assertEqual(value_plus-1, self.seq.get(1))
self.assertEqual(value_plus, self.seq.get(1))
self.seq.remove(txn=None, flags=0)
self.seq = db.DBSequence(self.d, flags=0)
self.assertEqual(None, self.seq.initial_value(value_minus))
self.assertEqual(None, self.seq.open(key='id', txn=None,
flags=db.DB_CREATE))
self.assertEqual(value_minus, self.seq.get(1))
self.assertEqual(value_minus+1, self.seq.get(1))
def test_multiple_close(self):
self.seq = db.DBSequence(self.d)
self.seq.close() # You can close a Sequence multiple times
self.seq.close()
self.seq.close()
def test_suite():
suite = unittest.TestSuite()
suite.addTest(unittest.makeSuite(DBSequenceTest))
return suite
if __name__ == '__main__':
unittest.main(defaultTest='test_suite')