1//===-- Unittests for wcscpy ---------------------------------------------===//
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/wchar_t.h"
10#include "src/wchar/wcscpy.h"
11#include "test/UnitTest/Test.h"
12
13TEST(LlvmLibcWCSCpyTest, EmptySrc) {
14 // Empty src should lead to empty destination.
15 wchar_t dest[4] = {L'a', L'b', L'c', L'\0'};
16 const wchar_t *src = L"";
17 LIBC_NAMESPACE::wcscpy(dest, src);
18 ASSERT_TRUE(dest[0] == src[0]);
19 ASSERT_TRUE(dest[0] == L'\0');
20}
21
22TEST(LlvmLibcWCSCpyTest, EmptyDest) {
23 // Empty dest should result in src
24 const wchar_t *src = L"abc";
25 wchar_t dest[4];
26 LIBC_NAMESPACE::wcscpy(dest, src);
27 ASSERT_TRUE(dest[0] == L'a');
28 ASSERT_TRUE(dest[1] == L'b');
29 ASSERT_TRUE(dest[2] == L'c');
30 ASSERT_TRUE(dest[3] == L'\0');
31}
32
33TEST(LlvmLibcWCSCpyTest, OffsetDest) {
34 // Offsetting should result in a concatenation.
35 const wchar_t *src = L"abc";
36 wchar_t dest[7];
37 dest[0] = L'x';
38 dest[1] = L'y';
39 dest[2] = L'z';
40 LIBC_NAMESPACE::wcscpy(dest + 3, src);
41 ASSERT_TRUE(dest[0] == L'x');
42 ASSERT_TRUE(dest[1] == L'y');
43 ASSERT_TRUE(dest[2] == L'z');
44 ASSERT_TRUE(dest[3] == src[0]);
45 ASSERT_TRUE(dest[4] == src[1]);
46 ASSERT_TRUE(dest[5] == src[2]);
47 ASSERT_TRUE(dest[6] == src[3]);
48}
49

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