mirror of
https://github.com/trezor/trezor-firmware.git
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49 lines
1.3 KiB
Python
49 lines
1.3 KiB
Python
from common import *
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from trezor.crypto import random
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class TestCryptoRandom(unittest.TestCase):
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def test_uniform(self):
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c = {}
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for i in range(15):
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c[i] = 0
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for _ in range(15000):
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r = random.uniform(15)
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c[r] += 1
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for i in range(15):
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self.assertAlmostEqual(c[r], 1000, delta=200)
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def test_bytes_length(self):
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for l in range(1024 + 1):
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lst = random.bytes(l)
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self.assertEqual(len(lst), l)
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def test_bytes_big_length(self):
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with self.assertRaises(ValueError):
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random.bytes(10000)
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def test_bytes_uniform(self):
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for _ in range(100):
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c = {}
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for h in '0123456789abcdef':
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c[h] = 0
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for _ in range(8):
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b = random.bytes(1000)
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for h in hexlify(b):
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c[chr(h)] += 1
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for h in '0123456789abcdef':
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self.assertAlmostEqual(c[h], 1000, delta=200)
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def test_shuffle(self):
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for l in range(256 + 1):
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lst = list(range(l))
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random.shuffle(lst)
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self.assertEqual(len(lst), l)
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self.assertEqual(sorted(lst), list(range(l)))
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if __name__ == '__main__':
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unittest.main()
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