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(const basic_string<charT,traits>& str); 13 14 #include <string> 15 #include <cassert> 16 17 #include "test_macros.h" 18 #include "min_allocator.h" 19 20 template <class S> 21 void 22 test(S s, S str, S expected) 23 { 24 s.append(str); 25 LIBCPP_ASSERT(s.__invariants()); 26 assert(s == expected); 27 } 28 29 int main(int, char**) 30 { 31 { 32 typedef std::string S; 33 test(S(), S(), S()); 34 test(S(), S("12345"), S("12345")); 35 test(S(), S("1234567890"), S("1234567890")); 36 test(S(), S("12345678901234567890"), S("12345678901234567890")); 37 38 test(S("12345"), S(), S("12345")); 39 test(S("12345"), S("12345"), S("1234512345")); 40 test(S("12345"), S("1234567890"), S("123451234567890")); 41 test(S("12345"), S("12345678901234567890"), S("1234512345678901234567890")); 42 43 test(S("1234567890"), S(), S("1234567890")); 44 test(S("1234567890"), S("12345"), S("123456789012345")); 45 test(S("1234567890"), S("1234567890"), S("12345678901234567890")); 46 test(S("1234567890"), S("12345678901234567890"), S("123456789012345678901234567890")); 47 48 test(S("12345678901234567890"), S(), S("12345678901234567890")); 49 test(S("12345678901234567890"), S("12345"), S("1234567890123456789012345")); 50 test(S("12345678901234567890"), S("1234567890"), S("123456789012345678901234567890")); 51 test(S("12345678901234567890"), S("12345678901234567890"), 52 S("1234567890123456789012345678901234567890")); 53 } 54 #if TEST_STD_VER >= 11 55 { 56 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S; 57 test(S(), S(), S()); 58 test(S(), S("12345"), S("12345")); 59 test(S(), S("1234567890"), S("1234567890")); 60 test(S(), S("12345678901234567890"), S("12345678901234567890")); 61 62 test(S("12345"), S(), S("12345")); 63 test(S("12345"), S("12345"), S("1234512345")); 64 test(S("12345"), S("1234567890"), S("123451234567890")); 65 test(S("12345"), S("12345678901234567890"), S("1234512345678901234567890")); 66 67 test(S("1234567890"), S(), S("1234567890")); 68 test(S("1234567890"), S("12345"), S("123456789012345")); 69 test(S("1234567890"), S("1234567890"), S("12345678901234567890")); 70 test(S("1234567890"), S("12345678901234567890"), S("123456789012345678901234567890")); 71 72 test(S("12345678901234567890"), S(), S("12345678901234567890")); 73 test(S("12345678901234567890"), S("12345"), S("1234567890123456789012345")); 74 test(S("12345678901234567890"), S("1234567890"), S("123456789012345678901234567890")); 75 test(S("12345678901234567890"), S("12345678901234567890"), 76 S("1234567890123456789012345678901234567890")); 77 } 78 #endif 79 80 #if TEST_STD_VER > 3 81 { // LWG 2946 82 std::string s; 83 s.append({"abc", 1}); 84 assert(s.size() == 1); 85 assert(s == "a"); 86 } 87 #endif 88 89 return 0; 90 } 91