1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <string> 11 12 // template<class charT, class traits> 13 // constexpr bool operator>(basic_string_view<charT,traits> lhs, 14 // basic_string_view<charT,traits> rhs); 15 16 #include <string_view> 17 #include <cassert> 18 19 #include "test_macros.h" 20 #include "constexpr_char_traits.hpp" 21 22 template <class S> 23 void 24 test(const S& lhs, const S& rhs, bool x, bool y) 25 { 26 assert((lhs > rhs) == x); 27 assert((rhs > lhs) == y); 28 } 29 30 int main() 31 { 32 { 33 typedef std::string_view S; 34 test(S(""), S(""), false, false); 35 test(S(""), S("abcde"), false, true); 36 test(S(""), S("abcdefghij"), false, true); 37 test(S(""), S("abcdefghijklmnopqrst"), false, true); 38 test(S("abcde"), S(""), true, false); 39 test(S("abcde"), S("abcde"), false, false); 40 test(S("abcde"), S("abcdefghij"), false, true); 41 test(S("abcde"), S("abcdefghijklmnopqrst"), false, true); 42 test(S("abcdefghij"), S(""), true, false); 43 test(S("abcdefghij"), S("abcde"), true, false); 44 test(S("abcdefghij"), S("abcdefghij"), false, false); 45 test(S("abcdefghij"), S("abcdefghijklmnopqrst"), false, true); 46 test(S("abcdefghijklmnopqrst"), S(""), true, false); 47 test(S("abcdefghijklmnopqrst"), S("abcde"), true, false); 48 test(S("abcdefghijklmnopqrst"), S("abcdefghij"), true, false); 49 test(S("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), false, false); 50 } 51 52 #if TEST_STD_VER > 11 53 { 54 typedef std::basic_string_view<char, constexpr_char_traits<char>> SV; 55 constexpr SV sv1; 56 constexpr SV sv2 { "abcde", 5 }; 57 58 static_assert (!(sv1 > sv1), "" ); 59 static_assert (!(sv2 > sv2), "" ); 60 61 static_assert (!(sv1 > sv2), "" ); 62 static_assert ( sv2 > sv1, "" ); 63 } 64 #endif 65 } 66
