1//===-- Unittests for isxdigit---------------------------------------------===//
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/isxdigit.h"
11
12#include "test/UnitTest/Test.h"
13
14namespace {
15
16// TODO: Merge the ctype tests using this framework.
17constexpr char XDIGIT_ARRAY[] = {
18 'a', 'b', 'c', 'd', 'e', 'f', 'A', 'B', 'C', 'D', 'E',
19 'F', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
20};
21
22bool in_span(int ch, LIBC_NAMESPACE::cpp::span<const char> arr) {
23 for (size_t i = 0; i < arr.size(); ++i)
24 if (static_cast<int>(arr[i]) == ch)
25 return true;
26 return false;
27}
28
29} // namespace
30
31TEST(LlvmLibcIsXdigit, SimpleTest) {
32 EXPECT_NE(LIBC_NAMESPACE::isxdigit('a'), 0);
33 EXPECT_NE(LIBC_NAMESPACE::isxdigit('B'), 0);
34 EXPECT_NE(LIBC_NAMESPACE::isxdigit('3'), 0);
35
36 EXPECT_EQ(LIBC_NAMESPACE::isxdigit('z'), 0);
37 EXPECT_EQ(LIBC_NAMESPACE::isxdigit(' '), 0);
38 EXPECT_EQ(LIBC_NAMESPACE::isxdigit('?'), 0);
39 EXPECT_EQ(LIBC_NAMESPACE::isxdigit('\0'), 0);
40 EXPECT_EQ(LIBC_NAMESPACE::isxdigit(-1), 0);
41}
42
43TEST(LlvmLibcIsXdigit, DefaultLocale) {
44 // Loops through all characters, verifying that numbers and letters
45 // return non-zero integer and everything else returns a zero.
46 for (int ch = -255; ch < 255; ++ch) {
47 if (in_span(ch, XDIGIT_ARRAY))
48 EXPECT_NE(LIBC_NAMESPACE::isxdigit(ch), 0);
49 else
50 EXPECT_EQ(LIBC_NAMESPACE::isxdigit(ch), 0);
51 }
52}
53

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source code of libc/test/src/ctype/isxdigit_test.cpp