| // Copyright 2012 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include"crypto/random.h" |
| |
| #include<stddef.h> |
| |
| #include<algorithm> |
| #include<string> |
| |
| #include"testing/gtest/include/gtest/gtest.h" |
| |
| // Basic functionality tests. Does NOT test the security of the random data. |
| |
| // Ensures we don't have all trivial data, i.e. that the data is indeed random. |
| // Currently, that means the bytes cannot be all the same (e.g. all zeros). |
| boolIsTrivial(base::span<constuint8_t> bytes){ |
| constuint8_t first_byte= bytes.front(); |
| return std::ranges::all_of(bytes, |
| [=](uint8_t byte){return byte== first_byte;}); |
| } |
| |
| TEST(RandBytes,RandBytes){ |
| std::array<uint8_t,16> bytes; |
| crypto::RandBytes(bytes); |
| EXPECT_FALSE(IsTrivial(bytes)); |
| } |
| |
| TEST(RandBytes,RandBytesAsVector){ |
| std::vector<uint8_t>vector= crypto::RandBytesAsVector(16); |
| EXPECT_FALSE(IsTrivial(vector)); |
| } |
