1//===-- Unittests for wmemcpy ---------------------------------------------===//
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/wmemcpy.h"
12#include "test/UnitTest/Test.h"
13
14TEST(LlvmLibcWMemcpyTest, CopyIntoEmpty) {
15 wchar_t dest[10] = {};
16 const wchar_t *src = L"abcde";
17 LIBC_NAMESPACE::wmemcpy(dest, src, 6);
18 ASSERT_TRUE(src[0] == dest[0]);
19 ASSERT_TRUE(src[1] == dest[1]);
20 ASSERT_TRUE(src[2] == dest[2]);
21 ASSERT_TRUE(src[3] == dest[3]);
22 ASSERT_TRUE(src[4] == dest[4]);
23 ASSERT_TRUE(src[5] == dest[5]);
24}
25
26TEST(LlvmLibcWMemcpyTest, CopyFullString) {
27 // After copying, strings should be the same.
28 wchar_t dest[10] = {};
29 const wchar_t *src = L"abcde";
30 LIBC_NAMESPACE::wmemcpy(dest, src, 6);
31 ASSERT_TRUE(src[0] == dest[0]);
32 ASSERT_TRUE(src[1] == dest[1]);
33 ASSERT_TRUE(src[2] == dest[2]);
34 ASSERT_TRUE(src[3] == dest[3]);
35 ASSERT_TRUE(src[4] == dest[4]);
36 ASSERT_TRUE(src[5] == dest[5]);
37}
38
39TEST(LlvmLibcWMemcpyTest, CopyPartialString) {
40 // After copying, only first two characters should be the same.
41 wchar_t dest[10] = {};
42 const wchar_t *src = L"abcde";
43 LIBC_NAMESPACE::wmemcpy(dest, src, 2);
44 ASSERT_TRUE(src[0] == dest[0]);
45 ASSERT_TRUE(src[1] == dest[1]);
46 ASSERT_TRUE(src[2] != dest[2]);
47 ASSERT_TRUE(src[3] != dest[3]);
48 ASSERT_TRUE(src[4] != dest[4]);
49}
50
51TEST(LlvmLibcWMemcpyTest, CopyZeroCharacters) {
52 // Copying 0 characters should not change the string
53 wchar_t dest[10] = {L'1', L'2', L'3', L'4', L'5', L'\0'};
54 const wchar_t *src = L"abcde";
55 LIBC_NAMESPACE::wmemcpy(dest, src, 0);
56 ASSERT_TRUE(L'1' == dest[0]);
57 ASSERT_TRUE(L'2' == dest[1]);
58 ASSERT_TRUE(L'3' == dest[2]);
59 ASSERT_TRUE(L'4' == dest[3]);
60 ASSERT_TRUE(L'5' == dest[4]);
61}
62

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