62 lines · cpp
1//===-- Unittests for bcmp ------------------------------------------------===//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-exception6//7//===----------------------------------------------------------------------===//8 9#include "src/__support/macros/config.h"10#include "src/strings/bcmp.h"11#include "test/UnitTest/Test.h"12#include "test/UnitTest/TestLogger.h"13#include "test/src/string/memory_utils/memory_check_utils.h"14 15namespace LIBC_NAMESPACE_DECL {16 17TEST(LlvmLibcBcmpTest, CmpZeroByte) {18 const char *lhs = "ab";19 const char *rhs = "bc";20 ASSERT_EQ(LIBC_NAMESPACE::bcmp(lhs, rhs, 0), 0);21}22 23TEST(LlvmLibcBcmpTest, LhsRhsAreTheSame) {24 const char *lhs = "ab";25 const char *rhs = "ab";26 ASSERT_EQ(LIBC_NAMESPACE::bcmp(lhs, rhs, 2), 0);27}28 29TEST(LlvmLibcBcmpTest, LhsBeforeRhsLexically) {30 const char *lhs = "ab";31 const char *rhs = "ac";32 ASSERT_NE(LIBC_NAMESPACE::bcmp(lhs, rhs, 2), 0);33}34 35TEST(LlvmLibcBcmpTest, LhsAfterRhsLexically) {36 const char *lhs = "ac";37 const char *rhs = "ab";38 ASSERT_NE(LIBC_NAMESPACE::bcmp(lhs, rhs, 2), 0);39}40 41// Adapt CheckBcmp signature to bcmp.42static inline int Adaptor(cpp::span<char> p1, cpp::span<char> p2, size_t size) {43 return LIBC_NAMESPACE::bcmp(p1.begin(), p2.begin(), size);44}45 46TEST(LlvmLibcBcmpTest, SizeSweep) {47 static constexpr size_t kMaxSize = 400;48 Buffer Buffer1(kMaxSize);49 Buffer Buffer2(kMaxSize);50 Randomize(Buffer1.span());51 for (size_t size = 0; size < kMaxSize; ++size) {52 auto span1 = Buffer1.span().subspan(0, size);53 auto span2 = Buffer2.span().subspan(0, size);54 const bool OK = CheckBcmp<Adaptor>(span1, span2, size);55 if (!OK)56 testing::tlog << "Failed at size=" << size << '\n';57 ASSERT_TRUE(OK);58 }59}60 61} // namespace LIBC_NAMESPACE_DECL62