43 lines
1 KiB
C++
43 lines
1 KiB
C++
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/*
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* Copyright (c) 2025-2026, Colleirose <criticskate@pm.me>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibTest/TestCase.h>
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#include <AK/ByteBuffer.h>
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#include <AK/Random.h>
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TEST_CASE(csprng_generates_unique_values)
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{
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constexpr size_t size = 800;
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constexpr size_t max_failures = 3;
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size_t failures = 0;
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for (size_t i = 0; i < 3; i++) {
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ByteBuffer first_buffer = MUST(ByteBuffer::create_zeroed(size));
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ByteBuffer second_buffer = MUST(ByteBuffer::create_zeroed(size));
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AK::fill_with_random(first_buffer);
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AK::fill_with_random(second_buffer);
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u32 first_u32 = AK::get_random_uniform(size);
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u32 second_u32 = AK::get_random_uniform(size);
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u64 first_u64 = AK::get_random_uniform_64(size);
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u64 second_u64 = AK::get_random_uniform_64(size);
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if (first_buffer == second_buffer)
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failures++;
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if (first_u32 == second_u32)
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failures++;
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if (first_u64 == second_u64)
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failures++;
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}
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EXPECT(failures < max_failures);
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}
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