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