1 //===-- Unittests for toupper----------------------------------------------===// 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/toupper.h" 11 12 #include "test/UnitTest/Test.h" 13 14 namespace { 15 16 // TODO: Merge the ctype tests using this framework. 17 // Invariant: UPPER_ARR and LOWER_ARR are both the complete alphabet in the same 18 // order. 19 constexpr char UPPER_ARR[] = { 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 }; 23 constexpr char LOWER_ARR[] = { 24 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 25 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 26 }; 27 28 static_assert( 29 sizeof(UPPER_ARR) == sizeof(LOWER_ARR), 30 "There must be the same number of uppercase and lowercase letters."); 31 32 int span_index(int ch, LIBC_NAMESPACE::cpp::span<const char> arr) { 33 for (size_t i = 0; i < arr.size(); ++i) 34 if (static_cast<int>(arr[i]) == ch) 35 return static_cast<int>(i); 36 return -1; 37 } 38 39 } // namespace 40 41 TEST(LlvmLibcToUpper, SimpleTest) { 42 EXPECT_EQ(LIBC_NAMESPACE::toupper('a'), int('A')); 43 EXPECT_EQ(LIBC_NAMESPACE::toupper('B'), int('B')); 44 EXPECT_EQ(LIBC_NAMESPACE::toupper('3'), int('3')); 45 46 EXPECT_EQ(LIBC_NAMESPACE::toupper(' '), int(' ')); 47 EXPECT_EQ(LIBC_NAMESPACE::toupper('?'), int('?')); 48 EXPECT_EQ(LIBC_NAMESPACE::toupper('\0'), int('\0')); 49 EXPECT_EQ(LIBC_NAMESPACE::toupper(-1), int(-1)); 50 } 51 52 TEST(LlvmLibcToUpper, DefaultLocale) { 53 for (int ch = -255; ch < 255; ++ch) { 54 int char_index = span_index(ch, LOWER_ARR); 55 if (char_index != -1) 56 EXPECT_EQ(LIBC_NAMESPACE::toupper(ch), 57 static_cast<int>(UPPER_ARR[char_index])); 58 else 59 EXPECT_EQ(LIBC_NAMESPACE::toupper(ch), ch); 60 } 61 } 62