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 // basic_string<charT,traits,Allocator>& 12 // append(basic_string_view<charT,traits> sv); 13 14 #include <string> 15 #include <string_view> 16 #include <cassert> 17 18 #include "test_macros.h" 19 #include "min_allocator.h" 20 21 template <class S, class SV> 22 TEST_CONSTEXPR_CXX20 void 23 test(S s, SV sv, S expected) 24 { 25 s.append(sv); 26 LIBCPP_ASSERT(s.__invariants()); 27 assert(s == expected); 28 } 29 30 bool test() { 31 { 32 typedef std::string S; 33 typedef std::string_view SV; 34 test(S(), SV(), S()); 35 test(S(), SV("12345"), S("12345")); 36 test(S(), SV("1234567890"), S("1234567890")); 37 test(S(), SV("12345678901234567890"), S("12345678901234567890")); 38 39 test(S("12345"), SV(), S("12345")); 40 test(S("12345"), SV("12345"), S("1234512345")); 41 test(S("12345"), SV("1234567890"), S("123451234567890")); 42 test(S("12345"), SV("12345678901234567890"), S("1234512345678901234567890")); 43 44 test(S("1234567890"), SV(), S("1234567890")); 45 test(S("1234567890"), SV("12345"), S("123456789012345")); 46 test(S("1234567890"), SV("1234567890"), S("12345678901234567890")); 47 test(S("1234567890"), SV("12345678901234567890"), S("123456789012345678901234567890")); 48 49 test(S("12345678901234567890"), SV(), S("12345678901234567890")); 50 test(S("12345678901234567890"), SV("12345"), S("1234567890123456789012345")); 51 test(S("12345678901234567890"), SV("1234567890"), S("123456789012345678901234567890")); 52 test(S("12345678901234567890"), SV("12345678901234567890"), 53 S("1234567890123456789012345678901234567890")); 54 } 55 #if TEST_STD_VER >= 11 56 { 57 typedef std::basic_string <char, std::char_traits<char>, min_allocator<char>> S; 58 typedef std::basic_string_view<char, std::char_traits<char> > SV; 59 test(S(), SV(), S()); 60 test(S(), SV("12345"), S("12345")); 61 test(S(), SV("1234567890"), S("1234567890")); 62 test(S(), SV("12345678901234567890"), S("12345678901234567890")); 63 64 test(S("12345"), SV(), S("12345")); 65 test(S("12345"), SV("12345"), S("1234512345")); 66 test(S("12345"), SV("1234567890"), S("123451234567890")); 67 test(S("12345"), SV("12345678901234567890"), S("1234512345678901234567890")); 68 69 test(S("1234567890"), SV(), S("1234567890")); 70 test(S("1234567890"), SV("12345"), S("123456789012345")); 71 test(S("1234567890"), SV("1234567890"), S("12345678901234567890")); 72 test(S("1234567890"), SV("12345678901234567890"), S("123456789012345678901234567890")); 73 74 test(S("12345678901234567890"), SV(), S("12345678901234567890")); 75 test(S("12345678901234567890"), SV("12345"), S("1234567890123456789012345")); 76 test(S("12345678901234567890"), SV("1234567890"), S("123456789012345678901234567890")); 77 test(S("12345678901234567890"), SV("12345678901234567890"), 78 S("1234567890123456789012345678901234567890")); 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