garnet/lib/magma/tests/unit_tests/test_platform_random.cc

// Copyright 2018 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "platform_random.h"
#include "gtest/gtest.h"

TEST(PlatformRandom, DifferentValues)
{
    uint8_t buffer0[128] = {};
    uint8_t buffer1[128] = {};
    magma_platform_GetSecureRandomBytes(buffer0, sizeof(buffer0));
    magma_platform_GetSecureRandomBytes(buffer1, sizeof(buffer1));

    // This could fail by accident, but it's extremely unlikely.
    EXPECT_NE(0, memcmp(buffer0, buffer1, sizeof(buffer0)));
}