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 14 namespace { 15 16 // TODO: Merge the ctype tests using this framework. 17 constexpr 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 22 bool 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 31 TEST(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 43 TEST(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