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