| #!/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 |
| # |
| # https://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 |
| from rsa.common import byte_size, bit_size, inverse |
| |
| |
| class TestByte(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 TestByteSize(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 TestBitSize(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) |
| |
| def test_negative_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) |
| |
| def test_bad_type(self): |
| self.assertRaises(TypeError, bit_size, []) |
| self.assertRaises(TypeError, bit_size, ()) |
| self.assertRaises(TypeError, bit_size, dict()) |
| self.assertRaises(TypeError, bit_size, "") |
| self.assertRaises(TypeError, bit_size, None) |
| self.assertRaises(TypeError, bit_size, 0.0) |
| |
| |
| class TestInverse(unittest.TestCase): |
| def test_normal(self): |
| self.assertEqual(3, inverse(7, 4)) |
| self.assertEqual(9, inverse(5, 11)) |
| |
| def test_not_relprime(self): |
| self.assertRaises(ValueError, inverse, 4, 8) |
| self.assertRaises(ValueError, inverse, 25, 5) |
