test_random.py

# test_random.py
#
# Copyright (C) 2006-2022 wolfSSL Inc.
#
# This file is part of wolfSSL. (formerly known as CyaSSL)
#
# wolfSSL is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# wolfSSL is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA

# pylint: disable=redefined-outer-name

import pytest
from wolfcrypt.random import Random


@pytest.fixture
def rng():
    return Random()


def test_byte(rng):
    assert len(rng.byte()) == 1


def test_bytes(rng):
    assert len(rng.randbytes(1)) == 1
    assert len(rng.randbytes(8)) == 8
    assert len(rng.randbytes(128)) == 128

@pytest.fixture
def rng_nonce():
    return Random(b"abcdefghijklmnopqrstuv")

def test_nonce_byte(rng_nonce):
    assert len(rng_nonce.byte()) == 1

@pytest.mark.parametrize("length", (1, 8, 128))
def test_nonce_bytes(rng_nonce, length):
    assert len(rng_nonce.randbytes(length)) == length