import unittest import os from test_all import db, test_support, get_new_environment_path, get_new_database_path class DBSequenceTest(unittest.TestCase): import sys if sys.version_info < (2, 4) : def assertTrue(self, expr, msg=None): self.failUnless(expr,msg=msg) 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.assertEquals(None, self.seq.initial_value(start_value)) self.assertEquals(None, self.seq.open(key='id', txn=None, flags=db.DB_CREATE)) self.assertEquals(start_value, self.seq.get(5)) self.assertEquals(start_value + 5, self.seq.get()) def test_remove(self): self.seq = db.DBSequence(self.d, flags=0) self.assertEquals(None, self.seq.open(key='foo', txn=None, flags=db.DB_CREATE)) self.assertEquals(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.assertEquals(None, self.seq.open(key=key, txn=None, flags=db.DB_CREATE)) self.assertEquals(key, self.seq.get_key()) def test_get_dbp(self): self.seq = db.DBSequence(self.d, flags=0) self.assertEquals(None, self.seq.open(key='foo', txn=None, flags=db.DB_CREATE)) self.assertEquals(self.d, self.seq.get_dbp()) def test_cachesize(self): self.seq = db.DBSequence(self.d, flags=0) cashe_size = 10 self.assertEquals(None, self.seq.set_cachesize(cashe_size)) self.assertEquals(None, self.seq.open(key='foo', txn=None, flags=db.DB_CREATE)) self.assertEquals(cashe_size, self.seq.get_cachesize()) def test_flags(self): self.seq = db.DBSequence(self.d, flags=0) flag = db.DB_SEQ_WRAP; self.assertEquals(None, self.seq.set_flags(flag)) self.assertEquals(None, self.seq.open(key='foo', txn=None, flags=db.DB_CREATE)) self.assertEquals(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.assertEquals(None, self.seq.set_range(seq_range)) self.seq.initial_value(seq_range[0]) self.assertEquals(None, self.seq.open(key='foo', txn=None, flags=db.DB_CREATE)) self.assertEquals(seq_range, self.seq.get_range()) def test_stat(self): self.seq = db.DBSequence(self.d, flags=0) self.assertEquals(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.assertEquals(9223372036854775806L,value_plus) value_minus=(-1L<<63)+1 # Two complement self.assertEquals(-9223372036854775807L,value_minus) self.seq = db.DBSequence(self.d, flags=0) self.assertEquals(None, self.seq.initial_value(value_plus-1)) self.assertEquals(None, self.seq.open(key='id', txn=None, flags=db.DB_CREATE)) self.assertEquals(value_plus-1, self.seq.get(1)) self.assertEquals(value_plus, self.seq.get(1)) self.seq.remove(txn=None, flags=0) self.seq = db.DBSequence(self.d, flags=0) self.assertEquals(None, self.seq.initial_value(value_minus)) self.assertEquals(None, self.seq.open(key='id', txn=None, flags=db.DB_CREATE)) self.assertEquals(value_minus, self.seq.get(1)) self.assertEquals(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() if db.version() >= (4,3): suite.addTest(unittest.makeSuite(DBSequenceTest)) return suite if __name__ == '__main__': unittest.main(defaultTest='test_suite')