diff options
Diffstat (limited to 'Lib/test/test_random.py')
| -rw-r--r-- | Lib/test/test_random.py | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/Lib/test/test_random.py b/Lib/test/test_random.py index 10406fe..78cd4d5 100644 --- a/Lib/test/test_random.py +++ b/Lib/test/test_random.py @@ -39,7 +39,7 @@ class TestBasicOps(unittest.TestCase): self.gen.seed(arg) for arg in [list(range(3)), dict(one=1)]: self.assertRaises(TypeError, self.gen.seed, arg) - self.assertRaises(TypeError, self.gen.seed, 1, 2) + self.assertRaises(TypeError, self.gen.seed, 1, 2, 3, 4) self.assertRaises(TypeError, type(self.gen), []) def test_sample(self): @@ -223,6 +223,21 @@ class SystemRandom_TestBasicOps(TestBasicOps): class MersenneTwister_TestBasicOps(TestBasicOps): gen = random.Random() + def test_guaranteed_stable(self): + # These sequences are guaranteed to stay the same across versions of python + self.gen.seed(3456147, version=1) + self.assertEqual([self.gen.random().hex() for i in range(4)], + ['0x1.ac362300d90d2p-1', '0x1.9d16f74365005p-1', + '0x1.1ebb4352e4c4dp-1', '0x1.1a7422abf9c11p-1']) + self.gen.seed("the quick brown fox", version=1) + self.assertEqual([self.gen.random().hex() for i in range(4)], + ['0x1.9ee265c177cdep-2', '0x1.bad51092e3c25p-1', + '0x1.85ff833f71576p-1', '0x1.87efb37462927p-1']) + self.gen.seed("the quick brown fox", version=2) + self.assertEqual([self.gen.random().hex() for i in range(4)], + ['0x1.1294009b9eda4p-2', '0x1.2ff96171b0010p-1', + '0x1.459e0989bd8e0p-5', '0x1.8b5f55892ddcbp-1']) + def test_setstate_first_arg(self): self.assertRaises(ValueError, self.gen.setstate, (1, None, None)) |