diff options
Diffstat (limited to 'Lib/test/test_random.py')
| -rw-r--r-- | Lib/test/test_random.py | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/Lib/test/test_random.py b/Lib/test/test_random.py index 4b5232f..e80ed17 100644 --- a/Lib/test/test_random.py +++ b/Lib/test/test_random.py @@ -326,6 +326,24 @@ class MersenneTwister_TestBasicOps(TestBasicOps, unittest.TestCase): ['0x1.1239ddfb11b7cp-3', '0x1.b3cbb5c51b120p-4', '0x1.8c4f55116b60fp-1', '0x1.63eb525174a27p-1']) + def test_bug_27706(self): + # Verify that version 1 seeds are unaffected by hash randomization + + self.gen.seed('nofar', version=1) # hash('nofar') == 5990528763808513177 + self.assertEqual([self.gen.random().hex() for i in range(4)], + ['0x1.8645314505ad7p-1', '0x1.afb1f82e40a40p-5', + '0x1.2a59d2285e971p-1', '0x1.56977142a7880p-6']) + + self.gen.seed('rachel', version=1) # hash('rachel') == -9091735575445484789 + self.assertEqual([self.gen.random().hex() for i in range(4)], + ['0x1.0b294cc856fcdp-1', '0x1.2ad22d79e77b8p-3', + '0x1.3052b9c072678p-2', '0x1.578f332106574p-3']) + + self.gen.seed('', version=1) # hash('') == 0 + self.assertEqual([self.gen.random().hex() for i in range(4)], + ['0x1.b0580f98a7dbep-1', '0x1.84129978f9c1ap-1', + '0x1.aeaa51052e978p-2', '0x1.092178fb945a6p-2']) + def test_setstate_first_arg(self): self.assertRaises(ValueError, self.gen.setstate, (1, None, None)) @@ -494,7 +512,7 @@ class MersenneTwister_TestBasicOps(TestBasicOps, unittest.TestCase): self.assertTrue(2**k > n > 2**(k-1)) # note the stronger assertion @unittest.mock.patch('random.Random.random') - def test_randbelow_overriden_random(self, random_mock): + def test_randbelow_overridden_random(self, random_mock): # Random._randbelow() can only use random() when the built-in one # has been overridden but no new getrandbits() method was supplied. random_mock.side_effect = random.SystemRandom().random |