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 // operator=(const basic_string<charT,traits,Allocator>& 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 s1, const S& s2) 23 { 24 s1 = s2; 25 LIBCPP_ASSERT(s1.__invariants()); 26 assert(s1 == s2); 27 assert(s1.capacity() >= s1.size()); 28 } 29 30 int main(int, char**) 31 { 32 { 33 typedef std::string S; 34 test(S(), S()); 35 test(S("1"), S()); 36 test(S(), S("1")); 37 test(S("1"), S("2")); 38 test(S("1"), S("2")); 39 40 test(S(), 41 S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz")); 42 test(S("123456789"), 43 S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz")); 44 test(S("1234567890123456789012345678901234567890123456789012345678901234567890"), 45 S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz")); 46 test(S("1234567890123456789012345678901234567890123456789012345678901234567890" 47 "1234567890123456789012345678901234567890123456789012345678901234567890"), 48 S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz")); 49 } 50 #if TEST_STD_VER >= 11 51 { 52 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S; 53 test(S(), S()); 54 test(S("1"), S()); 55 test(S(), S("1")); 56 test(S("1"), S("2")); 57 test(S("1"), S("2")); 58 59 test(S(), 60 S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz")); 61 test(S("123456789"), 62 S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz")); 63 test(S("1234567890123456789012345678901234567890123456789012345678901234567890"), 64 S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz")); 65 test(S("1234567890123456789012345678901234567890123456789012345678901234567890" 66 "1234567890123456789012345678901234567890123456789012345678901234567890"), 67 S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz")); 68 } 69 #endif 70 71 #if TEST_STD_VER > 3 72 { // LWG 2946 73 std::string s; 74 s = {"abc", 1}; 75 assert(s.size() == 1); 76 assert(s == "a"); 77 } 78 #endif 79 80 return 0; 81 } 82