1 | //===-- Unittests for wmemset ---------------------------------------------===// |
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/wmemset.h" |
12 | #include "test/UnitTest/Test.h" |
13 | |
14 | TEST(LlvmLibcWMemsetTest, SmallStringBoundCheck) { |
15 | wchar_t str[5]; |
16 | for (int i = 0; i < 5; i++) |
17 | str[i] = 'A'; |
18 | |
19 | wchar_t *output = LIBC_NAMESPACE::wmemset(str + 1, 'B', 3); |
20 | |
21 | EXPECT_EQ(output, str + 1); |
22 | |
23 | // EXPECT_TRUE being used since there isn't currently support for printing |
24 | // wide chars in the future, it would be preferred to switch these to |
25 | // EXPECT_EQ |
26 | EXPECT_TRUE(str[0] == (wchar_t)'A'); |
27 | EXPECT_TRUE(str[1] == (wchar_t)'B'); |
28 | EXPECT_TRUE(str[2] == (wchar_t)'B'); |
29 | EXPECT_TRUE(str[3] == (wchar_t)'B'); |
30 | EXPECT_TRUE(str[4] == (wchar_t)'A'); |
31 | } |
32 | |
33 | TEST(LlvmLibcWMemsetTest, LargeStringBoundCheck) { |
34 | constexpr int str_size = 1000; |
35 | wchar_t str[str_size]; |
36 | for (int i = 0; i < str_size; i++) |
37 | str[i] = 'A'; |
38 | |
39 | wchar_t *output = LIBC_NAMESPACE::wmemset(str + 1, 'B', str_size - 2); |
40 | |
41 | EXPECT_EQ(output, str + 1); |
42 | |
43 | EXPECT_TRUE(str[0] == (wchar_t)'A'); |
44 | for (int i = 1; i < str_size - 1; i++) |
45 | EXPECT_TRUE(str[i] == (wchar_t)'B'); |
46 | |
47 | EXPECT_TRUE(str[str_size - 1] == (wchar_t)'A'); |
48 | } |
49 | |
50 | TEST(LlvmLibcWMemsetTest, WCharSizeSmallString) { |
51 | // ensure we can handle full range of widechars |
52 | wchar_t str[5]; |
53 | const wchar_t target = WCHAR_MAX; |
54 | |
55 | for (int i = 0; i < 5; i++) |
56 | str[i] = 'A'; |
57 | |
58 | wchar_t *output = LIBC_NAMESPACE::wmemset(str + 1, target, 3); |
59 | |
60 | EXPECT_EQ(output, str + 1); |
61 | |
62 | EXPECT_TRUE(str[0] == (wchar_t)'A'); |
63 | EXPECT_TRUE(str[1] == target); |
64 | EXPECT_TRUE(str[2] == target); |
65 | EXPECT_TRUE(str[3] == target); |
66 | EXPECT_TRUE(str[4] == (wchar_t)'A'); |
67 | } |
68 | |
69 | TEST(LlvmLibcWMemsetTest, WCharSizeLargeString) { |
70 | // ensure we can handle full range of widechars |
71 | constexpr int str_size = 1000; |
72 | wchar_t str[str_size]; |
73 | |
74 | const wchar_t target = WCHAR_MAX; |
75 | |
76 | for (int i = 0; i < str_size; i++) |
77 | str[i] = 'A'; |
78 | |
79 | wchar_t *output = LIBC_NAMESPACE::wmemset(str + 1, target, str_size - 2); |
80 | |
81 | EXPECT_EQ(output, str + 1); |
82 | |
83 | EXPECT_TRUE(str[0] == (wchar_t)'A'); |
84 | for (int i = 1; i < str_size - 1; i++) |
85 | EXPECT_TRUE(str[i] == target); |
86 | |
87 | EXPECT_TRUE(str[str_size - 1] == (wchar_t)'A'); |
88 | } |
89 | |