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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Copyright 2011 Sybren A. Stüvel <sybren@stuvel.eu>
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import unittest
import struct
from rsa._compat import byte, b
from rsa.common import byte_size, bit_size, _bit_size
class Test_byte(unittest.TestCase):
def test_values(self):
self.assertEqual(byte(0), b('\x00'))
self.assertEqual(byte(255), b('\xff'))
def test_struct_error_when_out_of_bounds(self):
self.assertRaises(struct.error, byte, 256)
self.assertRaises(struct.error, byte, -1)
class Test_byte_size(unittest.TestCase):
def test_values(self):
self.assertEqual(byte_size(1 << 1023), 128)
self.assertEqual(byte_size((1 << 1024) - 1), 128)
self.assertEqual(byte_size(1 << 1024), 129)
self.assertEqual(byte_size(255), 1)
self.assertEqual(byte_size(256), 2)
self.assertEqual(byte_size(0xffff), 2)
self.assertEqual(byte_size(0xffffff), 3)
self.assertEqual(byte_size(0xffffffff), 4)
self.assertEqual(byte_size(0xffffffffff), 5)
self.assertEqual(byte_size(0xffffffffffff), 6)
self.assertEqual(byte_size(0xffffffffffffff), 7)
self.assertEqual(byte_size(0xffffffffffffffff), 8)
def test_zero(self):
self.assertEqual(byte_size(0), 1)
def test_bad_type(self):
self.assertRaises(TypeError, byte_size, [])
self.assertRaises(TypeError, byte_size, ())
self.assertRaises(TypeError, byte_size, dict())
self.assertRaises(TypeError, byte_size, "")
self.assertRaises(TypeError, byte_size, None)
class Test_bit_size(unittest.TestCase):
def test_zero(self):
self.assertEqual(bit_size(0), 0)
def test_values(self):
self.assertEqual(bit_size(1023), 10)
self.assertEqual(bit_size(1024), 11)
self.assertEqual(bit_size(1025), 11)
self.assertEqual(bit_size(1 << 1024), 1025)
self.assertEqual(bit_size((1 << 1024) + 1), 1025)
self.assertEqual(bit_size((1 << 1024) - 1), 1024)
self.assertEqual(_bit_size(1023), 10)
self.assertEqual(_bit_size(1024), 11)
self.assertEqual(_bit_size(1025), 11)
self.assertEqual(_bit_size(1 << 1024), 1025)
self.assertEqual(_bit_size((1 << 1024) + 1), 1025)
self.assertEqual(_bit_size((1 << 1024) - 1), 1024)
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