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# -*- coding: utf-8 -*-
import unittest2
from rsa._compat import b
from rsa.transform import int2bytes
class Test_integer_to_bytes(unittest2.TestCase):
def test_chunk_size(self):
self.assertEqual(int2bytes(123456789, 6),
b('\x00\x00\x07[\xcd\x15'))
self.assertEqual(int2bytes(123456789, 7),
b('\x00\x00\x00\x07[\xcd\x15'))
def test_raises_OverflowError_when_chunk_size_is_insufficient(self):
self.assertRaises(OverflowError, int2bytes, 123456789, 3)
self.assertRaises(OverflowError, int2bytes, 299999999999, 4)
def test_raises_ValueError_when_negative_integer(self):
self.assertRaises(ValueError, int2bytes, -1)
def test_raises_TypeError_when_not_integer(self):
self.assertRaises(TypeError, int2bytes, None)
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