1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
//===-- Unittests for wcsncpy ---------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "hdr/types/wchar_t.h"
#include "src/wchar/wcsncpy.h"
#include "test/UnitTest/Test.h"
TEST(LlvmLibcWCSNCpyTest, CopyZero) {
// Dest should remain unchanged.
wchar_t dest[3] = {L'a', L'b', L'\0'};
const wchar_t *src = L"x";
LIBC_NAMESPACE::wcsncpy(dest, src, 0);
ASSERT_TRUE(dest[0] == L'a');
ASSERT_TRUE(dest[1] == L'b');
ASSERT_TRUE(dest[2] == L'\0');
}
TEST(LlvmLibcWCSNCpyTest, CopyFullIntoEmpty) {
// Dest should be the exact same as src.
wchar_t dest[15];
const wchar_t *src = L"aaaaabbbbccccc";
LIBC_NAMESPACE::wcsncpy(dest, src, 15);
for (int i = 0; i < 15; i++)
ASSERT_TRUE(dest[i] == src[i]);
}
TEST(LlvmLibcWCSNCpyTest, CopyPartial) {
// First two characters of dest should be the first two characters of src.
wchar_t dest[] = {L'a', L'b', L'c', L'd', L'\0'};
const wchar_t *src = L"1234";
LIBC_NAMESPACE::wcsncpy(dest, src, 2);
ASSERT_TRUE(dest[0] == L'1');
ASSERT_TRUE(dest[1] == L'2');
ASSERT_TRUE(dest[2] == L'c');
ASSERT_TRUE(dest[3] == L'd');
ASSERT_TRUE(dest[4] == L'\0');
}
TEST(LlvmLibcWCSNCpyTest, CopyNullTerminator) {
// Null terminator should copy into dest.
wchar_t dest[] = {L'a', L'b', L'c', L'd', L'\0'};
const wchar_t src[] = {L'\0', L'y'};
LIBC_NAMESPACE::wcsncpy(dest, src, 1);
ASSERT_TRUE(dest[0] == L'\0');
ASSERT_TRUE(dest[1] == L'b');
ASSERT_TRUE(dest[2] == L'c');
ASSERT_TRUE(dest[3] == L'd');
ASSERT_TRUE(dest[4] == L'\0');
}
TEST(LlvmLibcWCSNCpyTest, CopyPastSrc) {
// Copying past src should fill with null terminator.
wchar_t dest[] = {L'a', L'b', L'c', L'd', L'\0'};
const wchar_t src[] = {L'x', L'\0'};
LIBC_NAMESPACE::wcsncpy(dest, src, 4);
ASSERT_TRUE(dest[0] == L'x');
ASSERT_TRUE(dest[1] == L'\0');
ASSERT_TRUE(dest[2] == L'\0');
ASSERT_TRUE(dest[3] == L'\0');
ASSERT_TRUE(dest[4] == L'\0');
}
|
