1//===-- Unittests for strndup ---------------------------------------------===//
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 "src/string/strndup.h"
10#include "test/UnitTest/Test.h"
11
12TEST(LlvmLibcstrndupTest, EmptyString) {
13 const char *empty = "";
14
15 char *result = LIBC_NAMESPACE::strndup(empty, 1);
16 ASSERT_NE(result, static_cast<char *>(nullptr));
17 ASSERT_NE(empty, const_cast<const char *>(result));
18 ASSERT_STREQ(empty, result);
19 ::free(result);
20}
21
22TEST(LlvmLibcstrndupTest, AnyString) {
23 const char *abc = "abc";
24
25 char *result = LIBC_NAMESPACE::strndup(abc, 3);
26
27 ASSERT_NE(result, static_cast<char *>(nullptr));
28 ASSERT_NE(abc, const_cast<const char *>(result));
29 ASSERT_STREQ(abc, result);
30 ::free(result);
31
32 result = LIBC_NAMESPACE::strndup(abc, 1);
33
34 ASSERT_NE(result, static_cast<char *>(nullptr));
35 ASSERT_NE(abc, const_cast<const char *>(result));
36 ASSERT_STREQ("a", result);
37 ::free(result);
38
39 result = LIBC_NAMESPACE::strndup(abc, 10);
40
41 ASSERT_NE(result, static_cast<char *>(nullptr));
42 ASSERT_NE(abc, const_cast<const char *>(result));
43 ASSERT_STREQ(abc, result);
44 ::free(result);
45}
46
47TEST(LlvmLibcstrndupTest, NullPtr) {
48 char *result = LIBC_NAMESPACE::strndup(nullptr, 0);
49
50 ASSERT_EQ(result, static_cast<char *>(nullptr));
51}
52

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