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bsddb: Beware with sequence wrapping

This commit is contained in:
Jesus Cea 2008-05-19 15:55:11 +00:00
parent 36d879b07c
commit 958ee47286
1 changed files with 5 additions and 9 deletions
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14
Lib/bsddb/test/test_sequence.py
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@ -115,15 +115,11 @@ class DBSequenceTest(unittest.TestCase):
d.close()
def test_64bits(self) :
value_plus=(1L<<63)-1
self.assertEquals(9223372036854775807L,value_plus)
value_minus=-1L<<63 # Two complement
self.assertEquals(-9223372036854775808L,value_minus)
if db.version() < (4,4):
# We don't use both extremes because it is
# problematic in Berkeley DB 4.3.
value_plus-=1
value_minus+=1
# 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.init_value(value_plus-1))
self.assertEquals(None, self.seq.open(key='id', txn=None,