aboutsummaryrefslogtreecommitdiffstats
path: root/tests/hazmat/primitives/test_constant_time.py
blob: e8e85a840afcc9dc36c37408768e96084d138d78 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
# This file is dual licensed under the terms of the Apache License, Version
# 2.0, and the BSD License. See the LICENSE file in the root of this repository
# for complete details.

from __future__ import absolute_import, division, print_function

import pytest

from cryptography.hazmat.primitives import constant_time


class TestConstantTimeBytesEq(object):
    def test_reject_unicode(self):
        with pytest.raises(TypeError):
            constant_time.bytes_eq(b"foo", u"foo")

        with pytest.raises(TypeError):
            constant_time.bytes_eq(u"foo", b"foo")

        with pytest.raises(TypeError):
            constant_time.bytes_eq(u"foo", u"foo")

    def test_compares(self):
        assert constant_time.bytes_eq(b"foo", b"foo") is True

        assert constant_time.bytes_eq(b"foo", b"bar") is False

        assert constant_time.bytes_eq(b"foobar", b"foo") is False

        assert constant_time.bytes_eq(b"foo", b"foobar") is False