1//===-- Unittests for strxfrm ---------------------------------------------===//
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/strxfrm.h"
10#include "test/UnitTest/Test.h"
11
12#include "src/string/string_utils.h"
13
14// TODO: Add more comprehensive tests once locale support is added.
15
16TEST(LlvmLibcStrxfrmTest, SimpleTestSufficientlySizedN) {
17 const char *src = "abc";
18 const size_t n = 5;
19
20 char dest[n];
21 size_t result = LIBC_NAMESPACE::strxfrm(dest, src, n);
22 ASSERT_EQ(result, LIBC_NAMESPACE::internal::string_length(src));
23 ASSERT_STREQ(dest, src);
24}
25
26TEST(LlvmLibcStrxfrmTest, SimpleTestExactSizedN) {
27 const char *src = "abc";
28 const size_t n = 4;
29
30 char dest[n];
31 size_t result = LIBC_NAMESPACE::strxfrm(dest, src, n);
32 ASSERT_EQ(result, LIBC_NAMESPACE::internal::string_length(src));
33 ASSERT_STREQ(dest, src);
34}
35
36TEST(LlvmLibcStrxfrmTest, SimpleTestInsufficientlySizedN) {
37 const char *src = "abc";
38 const size_t n = 3;
39
40 // Verify strxfrm does not modify dest if src len >= n
41 char dest[n] = {'x', 'x', '\0'};
42 size_t result = LIBC_NAMESPACE::strxfrm(dest, src, n);
43 ASSERT_GE(result, n);
44 ASSERT_STREQ(dest, "xx");
45}
46

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