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#
# Test script for Crypto.Util.randpool.
#
__revision__ = "$Id: test_randpool.py,v 1.3 2003/02/28 15:24:01 akuchling Exp $"
from sancho.unittest import TestScenario, parse_args, run_scenarios
from Crypto.Hash import SHA
from Crypto.Util import randpool
tested_modules = [ "Crypto.Util.randpool" ]
class RandomPoolTest (TestScenario):
def setup (self):
self.pool = randpool.RandomPool(160, hash=SHA)
def shutdown (self):
del self.pool
def check_init (self):
"Check initial state"
self.test_val('self.pool.entropy', self.pool.bits)
def check_get_bytes (self):
"Check retrieving of bytes from the pool"
start_entropy = self.pool.entropy
self.test_bool('self.pool.entropy > 0')
# Draw out half of the pool's entropy
size = self.pool.entropy / 8 / 2
self.test_stmt('self.pool.get_bytes(size)')
self.test_val('self.pool.entropy', start_entropy - size*8)
# Draw out the rest of the pool's entropy
self.test_stmt('self.pool.get_bytes(size)')
self.test_val('self.pool.entropy', 0)
# Remove yet more data; entropy stays at zero
self.test_stmt('self.pool.get_bytes(size)')
self.test_val('self.pool.entropy', 0)
# class RandomPoolTest
if __name__ == "__main__":
(scenarios, options) = parse_args()
run_scenarios(scenarios, options)
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