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Crypto
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SelfTest
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test_random.py
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# -*- coding: utf-8 -*- # # SelfTest/Util/test_generic.py: Self-test for the Crypto.Random.new() function # # Written in 2008 by Dwayne C. Litzenberger <dlitz@dlitz.net> # # =================================================================== # The contents of this file are dedicated to the public domain. To # the extent that dedication to the public domain is not available, # everyone is granted a worldwide, perpetual, royalty-free, # non-exclusive license to exercise all rights associated with the # contents of this file for any purpose whatsoever. # No rights are reserved. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS # BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN # ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE # SOFTWARE. # =================================================================== """Self-test suite for Crypto.Random.new()""" import sys import unittest from Crypto.Util.py3compat import b class SimpleTest(unittest.TestCase): def runTest(self): """Crypto.Random.new()""" # Import the Random module and try to use it from Crypto import Random randobj = Random.new() x = randobj.read(16) y = randobj.read(16) self.assertNotEqual(x, y) z = Random.get_random_bytes(16) self.assertNotEqual(x, z) self.assertNotEqual(y, z) # Test the Random.random module, which # implements a subset of Python's random API # Not implemented: # seed(), getstate(), setstate(), jumpahead() # random(), uniform(), triangular(), betavariate() # expovariate(), gammavariate(), gauss(), # longnormvariate(), normalvariate(), # vonmisesvariate(), paretovariate() # weibullvariate() # WichmannHill(), whseed(), SystemRandom() from Crypto.Random import random x = random.getrandbits(16*8) y = random.getrandbits(16*8) self.assertNotEqual(x, y) # Test randrange if x>y: start = y stop = x else: start = x stop = y for step in range(1,10): x = random.randrange(start,stop,step) y = random.randrange(start,stop,step) self.assertNotEqual(x, y) self.assertEqual(start <= x < stop, True) self.assertEqual(start <= y < stop, True) self.assertEqual((x - start) % step, 0) self.assertEqual((y - start) % step, 0) for i in range(10): self.assertEqual(random.randrange(1,2), 1) self.assertRaises(ValueError, random.randrange, start, start) self.assertRaises(ValueError, random.randrange, stop, start, step) self.assertRaises(TypeError, random.randrange, start, stop, step, step) self.assertRaises(TypeError, random.randrange, start, stop, "1") self.assertRaises(TypeError, random.randrange, "1", stop, step) self.assertRaises(TypeError, random.randrange, 1, "2", step) self.assertRaises(ValueError, random.randrange, start, stop, 0) # Test randint x = random.randint(start,stop) y = random.randint(start,stop) self.assertNotEqual(x, y) self.assertEqual(start <= x <= stop, True) self.assertEqual(start <= y <= stop, True) for i in range(10): self.assertEqual(random.randint(1,1), 1) self.assertRaises(ValueError, random.randint, stop, start) self.assertRaises(TypeError, random.randint, start, stop, step) self.assertRaises(TypeError, random.randint, "1", stop) self.assertRaises(TypeError, random.randint, 1, "2") # Test choice seq = range(10000) x = random.choice(seq) y = random.choice(seq) self.assertNotEqual(x, y) self.assertEqual(x in seq, True) self.assertEqual(y in seq, True) for i in range(10): self.assertEqual(random.choice((1,2,3)) in (1,2,3), True) self.assertEqual(random.choice([1,2,3]) in [1,2,3], True) if sys.version_info[0] == 3: self.assertEqual(random.choice(bytearray(b('123'))) in bytearray(b('123')), True) self.assertEqual(1, random.choice([1])) self.assertRaises(IndexError, random.choice, []) self.assertRaises(TypeError, random.choice, 1) # Test shuffle. Lacks random parameter to specify function. # Make copies of seq seq = range(500) x = list(seq) y = list(seq) random.shuffle(x) random.shuffle(y) self.assertNotEqual(x, y) self.assertEqual(len(seq), len(x)) self.assertEqual(len(seq), len(y)) for i in range(len(seq)): self.assertEqual(x[i] in seq, True) self.assertEqual(y[i] in seq, True) self.assertEqual(seq[i] in x, True) self.assertEqual(seq[i] in y, True) z = [1] random.shuffle(z) self.assertEqual(z, [1]) if sys.version_info[0] == 3: z = bytearray(b('12')) random.shuffle(z) self.assertEqual(b('1') in z, True) self.assertRaises(TypeError, random.shuffle, b('12')) self.assertRaises(TypeError, random.shuffle, 1) self.assertRaises(TypeError, random.shuffle, "11") self.assertRaises(TypeError, random.shuffle, (1,2)) # 2to3 wraps a list() around it, alas - but I want to shoot # myself in the foot here! :D # if sys.version_info[0] == 3: # self.assertRaises(TypeError, random.shuffle, range(3)) # Test sample x = random.sample(seq, 20) y = random.sample(seq, 20) self.assertNotEqual(x, y) for i in range(20): self.assertEqual(x[i] in seq, True) self.assertEqual(y[i] in seq, True) z = random.sample([1], 1) self.assertEqual(z, [1]) z = random.sample((1,2,3), 1) self.assertEqual(z[0] in (1,2,3), True) z = random.sample("123", 1) self.assertEqual(z[0] in "123", True) z = random.sample(range(3), 1) self.assertEqual(z[0] in range(3), True) if sys.version_info[0] == 3: z = random.sample(b("123"), 1) self.assertEqual(z[0] in b("123"), True) z = random.sample(bytearray(b("123")), 1) self.assertEqual(z[0] in bytearray(b("123")), True) self.assertRaises(TypeError, random.sample, 1) def get_tests(config={}): return [SimpleTest()] if __name__ == '__main__': suite = lambda: unittest.TestSuite(get_tests()) unittest.main(defaultTest='suite') # vim:set ts=4 sw=4 sts=4 expandtab: