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"""
Copyright (c) 2008-2020, Jesus Cea Avion <jcea@jcea.es>
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following
disclaimer in the documentation and/or other materials provided
with the distribution.
3. Neither the name of Jesus Cea Avion nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
"""
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)
# 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')
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