1//===-- Unittests for isupper----------------------------------------------===//
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/isupper.h"
11
12#include "test/UnitTest/Test.h"
13
14namespace {
15
16// TODO: Merge the ctype tests using this framework.
17constexpr char UPPER_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};
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(LlvmLibcIsUpper, SimpleTest) {
32 EXPECT_NE(LIBC_NAMESPACE::isupper('B'), 0);
33
34 EXPECT_EQ(LIBC_NAMESPACE::isupper('a'), 0);
35 EXPECT_EQ(LIBC_NAMESPACE::isupper('3'), 0);
36 EXPECT_EQ(LIBC_NAMESPACE::isupper(' '), 0);
37 EXPECT_EQ(LIBC_NAMESPACE::isupper('?'), 0);
38 EXPECT_EQ(LIBC_NAMESPACE::isupper('\0'), 0);
39 EXPECT_EQ(LIBC_NAMESPACE::isupper(-1), 0);
40}
41
42TEST(LlvmLibcIsUpper, DefaultLocale) {
43 // Loops through all characters, verifying that numbers and letters
44 // return non-zero integer and everything else returns a zero.
45 for (int ch = -255; ch < 255; ++ch) {
46 if (in_span(ch, UPPER_ARRAY))
47 EXPECT_NE(LIBC_NAMESPACE::isupper(ch), 0);
48 else
49 EXPECT_EQ(LIBC_NAMESPACE::isupper(ch), 0);
50 }
51}
52

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