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-exception
6//
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) && !defined(LIBC_HAS_SANITIZER)
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) && !defined(LIBC_HAS_SANITIZER)
55

source code of libc/test/src/string/strcpy_test.cpp