libc/test/src/string/memcpy_test.cpp

   1 //===-- Unittests for memcpy ----------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "memory_utils/memory_check_utils.h"
  10 #include "src/string/memcpy.h"
  11 #include "test/UnitTest/Test.h"
  12
  13 namespace LIBC_NAMESPACE {
  14
  15 // Adapt CheckMemcpy signature to memcpy.
  16 static inline void Adaptor(cpp::span<char> dst, cpp::span<char> src,
  17                            size_t size) {
  18   LIBC_NAMESPACE::memcpy(dst.begin(), src.begin(), size);
  19 }
  20
  21 TEST(LlvmLibcMemcpyTest, SizeSweep) {
  22   static constexpr size_t kMaxSize = 400;
  23   Buffer SrcBuffer(kMaxSize);
  24   Buffer DstBuffer(kMaxSize);
  25   Randomize(SrcBuffer.span());
  26   for (size_t size = 0; size < kMaxSize; ++size) {
  27     auto src = SrcBuffer.span().subspan(0, size);
  28     auto dst = DstBuffer.span().subspan(0, size);
  29     ASSERT_TRUE(CheckMemcpy<Adaptor>(dst, src, size));
  30   }
  31 }
  32
  33 } // namespace LIBC_NAMESPACE