1//===-- Unittests for wcslcat ---------------------------------------------===//
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/types/size_t.h"
10#include "hdr/types/wchar_t.h"
11#include "src/wchar/wcslcat.h"
12#include "test/UnitTest/Test.h"
13
14TEST(LlvmLibcWCSLCatTest, TooBig) {
15 const wchar_t *src = L"cd";
16 wchar_t dst[4]{L"ab"};
17 size_t res = LIBC_NAMESPACE::wcslcat(dst, src, 3);
18 ASSERT_TRUE(dst[0] == L'a');
19 ASSERT_TRUE(dst[1] == L'b');
20 ASSERT_TRUE(dst[2] == L'\0');
21 // Should still return src length + dst length
22 ASSERT_EQ(res, size_t(4));
23 // Not enough space to copy d
24 res = LIBC_NAMESPACE::wcslcat(dst, src, 4);
25 ASSERT_TRUE(dst[0] == L'a');
26 ASSERT_TRUE(dst[1] == L'b');
27 ASSERT_TRUE(dst[2] == L'c');
28 ASSERT_TRUE(dst[3] == L'\0');
29 ASSERT_EQ(res, size_t(4));
30}
31
32TEST(LlvmLibcWCSLCatTest, Smaller) {
33 const wchar_t *src = L"cd";
34 wchar_t dst[7]{L"ab"};
35 size_t res = LIBC_NAMESPACE::wcslcat(dst, src, 7);
36 ASSERT_TRUE(dst[0] == L'a');
37 ASSERT_TRUE(dst[1] == L'b');
38 ASSERT_TRUE(dst[2] == L'c');
39 ASSERT_TRUE(dst[3] == L'd');
40 ASSERT_TRUE(dst[4] == L'\0');
41 ASSERT_EQ(res, size_t(4));
42}
43
44TEST(LlvmLibcWCSLCatTest, SmallerNoOverwriteAfter0) {
45 const wchar_t *src = L"cd";
46 wchar_t dst[8]{L"ab\0\0efg"};
47 size_t res = LIBC_NAMESPACE::wcslcat(dst, src, 8);
48 ASSERT_TRUE(dst[0] == L'a');
49 ASSERT_TRUE(dst[1] == L'b');
50 ASSERT_TRUE(dst[2] == L'c');
51 ASSERT_TRUE(dst[3] == L'd');
52 ASSERT_TRUE(dst[4] == L'\0');
53 ASSERT_TRUE(dst[5] == L'f');
54 ASSERT_TRUE(dst[6] == L'g');
55 ASSERT_TRUE(dst[7] == L'\0');
56 ASSERT_EQ(res, size_t(4));
57}
58

source code of libc/test/src/wchar/wcslcat_test.cpp