1 | //===-- Unittests for isalnum----------------------------------------------===// |
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 "src/__support/CPP/span.h" |
10 | #include "src/ctype/isalnum.h" |
11 | |
12 | #include "test/UnitTest/Test.h" |
13 | |
14 | namespace { |
15 | |
16 | // TODO: Merge the ctype tests using this framework. |
17 | constexpr char ALNUM_ARRAY[] = { |
18 | 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', |
19 | 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', |
20 | 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', |
21 | 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', |
22 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
23 | }; |
24 | |
25 | bool in_span(int ch, LIBC_NAMESPACE::cpp::span<const char> arr) { |
26 | for (size_t i = 0; i < arr.size(); ++i) |
27 | if (static_cast<int>(arr[i]) == ch) |
28 | return true; |
29 | return false; |
30 | } |
31 | |
32 | } // namespace |
33 | |
34 | TEST(LlvmLibcIsAlNum, SimpleTest) { |
35 | EXPECT_NE(LIBC_NAMESPACE::isalnum('a'), 0); |
36 | EXPECT_NE(LIBC_NAMESPACE::isalnum('B'), 0); |
37 | EXPECT_NE(LIBC_NAMESPACE::isalnum('3'), 0); |
38 | |
39 | EXPECT_EQ(LIBC_NAMESPACE::isalnum(' '), 0); |
40 | EXPECT_EQ(LIBC_NAMESPACE::isalnum('?'), 0); |
41 | EXPECT_EQ(LIBC_NAMESPACE::isalnum('\0'), 0); |
42 | EXPECT_EQ(LIBC_NAMESPACE::isalnum(-1), 0); |
43 | } |
44 | |
45 | TEST(LlvmLibcIsAlNum, DefaultLocale) { |
46 | // Loops through all characters, verifying that numbers and letters |
47 | // return non-zero integer and everything else returns a zero. |
48 | for (int ch = -255; ch < 255; ++ch) { |
49 | if (in_span(ch, ALNUM_ARRAY)) |
50 | EXPECT_NE(LIBC_NAMESPACE::isalnum(ch), 0); |
51 | else |
52 | EXPECT_EQ(LIBC_NAMESPACE::isalnum(ch), 0); |
53 | } |
54 | } |
55 | |