1 //===----------------------------------------------------------------------===// 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 // XFAIL: LIBCXX-AIX-FIXME 10 11 // <string> 12 13 // int compare(const basic_string_view sv) const // constexpr since C++20 14 15 #include <string> 16 #include <cassert> 17 18 #include "test_macros.h" 19 #include "min_allocator.h" 20 21 TEST_CONSTEXPR_CXX20 int sign(int x) 22 { 23 if (x == 0) 24 return 0; 25 if (x < 0) 26 return -1; 27 return 1; 28 } 29 30 template <class S, class SV> 31 TEST_CONSTEXPR_CXX20 void 32 test(const S& s, SV sv, int x) 33 { 34 LIBCPP_ASSERT_NOEXCEPT(s.compare(sv)); 35 assert(sign(s.compare(sv)) == sign(x)); 36 } 37 38 TEST_CONSTEXPR_CXX20 bool test() { 39 { 40 typedef std::string S; 41 typedef std::string_view SV; 42 test(S(""), SV(""), 0); 43 test(S(""), SV("abcde"), -5); 44 test(S(""), SV("abcdefghij"), -10); 45 test(S(""), SV("abcdefghijklmnopqrst"), -20); 46 test(S("abcde"), SV(""), 5); 47 test(S("abcde"), SV("abcde"), 0); 48 test(S("abcde"), SV("abcdefghij"), -5); 49 test(S("abcde"), SV("abcdefghijklmnopqrst"), -15); 50 test(S("abcdefghij"), SV(""), 10); 51 test(S("abcdefghij"), SV("abcde"), 5); 52 test(S("abcdefghij"), SV("abcdefghij"), 0); 53 test(S("abcdefghij"), SV("abcdefghijklmnopqrst"), -10); 54 test(S("abcdefghijklmnopqrst"), SV(""), 20); 55 test(S("abcdefghijklmnopqrst"), SV("abcde"), 15); 56 test(S("abcdefghijklmnopqrst"), SV("abcdefghij"), 10); 57 test(S("abcdefghijklmnopqrst"), SV("abcdefghijklmnopqrst"), 0); 58 } 59 #if TEST_STD_VER >= 11 60 { 61 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S; 62 typedef std::string_view SV; 63 test(S(""), SV(""), 0); 64 test(S(""), SV("abcde"), -5); 65 test(S(""), SV("abcdefghij"), -10); 66 test(S(""), SV("abcdefghijklmnopqrst"), -20); 67 test(S("abcde"), SV(""), 5); 68 test(S("abcde"), SV("abcde"), 0); 69 test(S("abcde"), SV("abcdefghij"), -5); 70 test(S("abcde"), SV("abcdefghijklmnopqrst"), -15); 71 test(S("abcdefghij"), SV(""), 10); 72 test(S("abcdefghij"), SV("abcde"), 5); 73 test(S("abcdefghij"), SV("abcdefghij"), 0); 74 test(S("abcdefghij"), SV("abcdefghijklmnopqrst"), -10); 75 test(S("abcdefghijklmnopqrst"), SV(""), 20); 76 test(S("abcdefghijklmnopqrst"), SV("abcde"), 15); 77 test(S("abcdefghijklmnopqrst"), SV("abcdefghij"), 10); 78 test(S("abcdefghijklmnopqrst"), SV("abcdefghijklmnopqrst"), 0); 79 } 80 #endif 81 82 return true; 83 } 84 85 int main(int, char**) 86 { 87 test(); 88 #if TEST_STD_VER > 17 89 static_assert(test()); 90 #endif 91 92 return 0; 93 } 94