55 lines · cpp
1//===-- Unittests for strcpy ----------------------------------------------===//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 "hdr/signal_macros.h"10#include "src/string/strcpy.h"11#include "test/UnitTest/Test.h"12 13TEST(LlvmLibcStrCpyTest, EmptySrc) {14 const char *empty = "";15 char dest[4] = {'a', 'b', 'c', '\0'};16 17 char *result = LIBC_NAMESPACE::strcpy(dest, empty);18 ASSERT_EQ(dest, result);19 ASSERT_STREQ(dest, result);20 ASSERT_STREQ(dest, empty);21}22 23TEST(LlvmLibcStrCpyTest, EmptyDest) {24 const char *abc = "abc";25 char dest[4];26 27 char *result = LIBC_NAMESPACE::strcpy(dest, abc);28 ASSERT_EQ(dest, result);29 ASSERT_STREQ(dest, result);30 ASSERT_STREQ(dest, abc);31}32 33TEST(LlvmLibcStrCpyTest, OffsetDest) {34 const char *abc = "abc";35 char dest[7];36 37 dest[0] = 'x';38 dest[1] = 'y';39 dest[2] = 'z';40 41 char *result = LIBC_NAMESPACE::strcpy(dest + 3, abc);42 ASSERT_EQ(dest + 3, result);43 ASSERT_STREQ(dest + 3, result);44 ASSERT_STREQ(dest, "xyzabc");45}46 47#if defined(LIBC_ADD_NULL_CHECKS)48 49TEST(LlvmLibcStrCpyTest, CrashOnNullPtr) {50 ASSERT_DEATH([]() { LIBC_NAMESPACE::strcpy(nullptr, nullptr); },51 WITH_SIGNAL(-1));52}53 54#endif // defined(LIBC_ADD_NULL_CHECKS)55