+++ /dev/null
-//===-- Unittests for bcopy -----------------------------------------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-#include "src/__support/CPP/span.h"
-#include "src/string/bcopy.h"
-#include "utils/UnitTest/MemoryMatcher.h"
-#include "utils/UnitTest/Test.h"
-
-using __llvm_libc::cpp::array;
-using __llvm_libc::cpp::span;
-
-TEST(LlvmLibcBcopyTest, MoveZeroByte) {
- char Buffer[] = {'a', 'b', 'y', 'z'};
- const char Expected[] = {'a', 'b', 'y', 'z'};
- void *const Dst = Buffer;
- __llvm_libc::bcopy(Buffer + 2, Dst, 0);
- ASSERT_MEM_EQ(Buffer, Expected);
-}
-
-TEST(LlvmLibcBcopyTest, DstAndSrcPointToSameAddress) {
- char Buffer[] = {'a', 'b'};
- const char Expected[] = {'a', 'b'};
- void *const Dst = Buffer;
- __llvm_libc::bcopy(Buffer, Dst, 1);
- ASSERT_MEM_EQ(Buffer, Expected);
-}
-
-TEST(LlvmLibcBcopyTest, DstStartsBeforeSrc) {
- // Set boundary at beginning and end for not overstepping when
- // copy forward or backward.
- char Buffer[] = {'z', 'a', 'b', 'c', 'z'};
- const char Expected[] = {'z', 'b', 'c', 'c', 'z'};
- void *const Dst = Buffer + 1;
- __llvm_libc::bcopy(Buffer + 2, Dst, 2);
- ASSERT_MEM_EQ(Buffer, Expected);
-}
-
-TEST(LlvmLibcBcopyTest, DstStartsAfterSrc) {
- char Buffer[] = {'z', 'a', 'b', 'c', 'z'};
- const char Expected[] = {'z', 'a', 'a', 'b', 'z'};
- void *const Dst = Buffer + 2;
- __llvm_libc::bcopy(Buffer + 1, Dst, 2);
- ASSERT_MEM_EQ(Buffer, Expected);
-}
-
-// e.g. `Dst` follow `src`.
-// str: [abcdefghij]
-// [__src_____]
-// [_____Dst__]
-TEST(LlvmLibcBcopyTest, SrcFollowDst) {
- char Buffer[] = {'z', 'a', 'b', 'z'};
- const char Expected[] = {'z', 'b', 'b', 'z'};
- void *const Dst = Buffer + 1;
- __llvm_libc::bcopy(Buffer + 2, Dst, 1);
- ASSERT_MEM_EQ(Buffer, Expected);
-}
-
-TEST(LlvmLibcBcopyTest, DstFollowSrc) {
- char Buffer[] = {'z', 'a', 'b', 'z'};
- const char Expected[] = {'z', 'a', 'a', 'z'};
- void *const Dst = Buffer + 2;
- __llvm_libc::bcopy(Buffer + 1, Dst, 1);
- ASSERT_MEM_EQ(Buffer, Expected);
-}
-
-static constexpr int kMaxSize = 512;
-
-char GetRandomChar() {
- static constexpr const uint64_t A = 1103515245;
- static constexpr const uint64_t C = 12345;
- static constexpr const uint64_t M = 1ULL << 31;
- static uint64_t Seed = 123456789;
- Seed = (A * Seed + C) % M;
- return Seed;
-}
-
-void Randomize(span<char> Buffer) {
- for (auto ¤t : Buffer)
- current = GetRandomChar();
-}
-
-TEST(LlvmLibcBcopyTest, SizeSweep) {
- using LargeBuffer = array<char, 3 * kMaxSize>;
- LargeBuffer GroundTruth;
- Randomize(GroundTruth);
- for (int Size = 0; Size < kMaxSize; ++Size) {
- for (int Offset = -Size; Offset < Size; ++Offset) {
- LargeBuffer Buffer = GroundTruth;
- LargeBuffer Expected = GroundTruth;
- size_t DstOffset = kMaxSize;
- size_t SrcOffset = kMaxSize + Offset;
- for (int I = 0; I < Size; ++I)
- Expected[DstOffset + I] = GroundTruth[SrcOffset + I];
- void *const Dst = Buffer.data() + DstOffset;
- __llvm_libc::bcopy(Buffer.data() + SrcOffset, Dst, Size);
- ASSERT_MEM_EQ(Buffer, Expected);
- }
- }
-}
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