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 charT* s); 13 14 #include <string> 15 #include <cassert> 16 17 #include "test_macros.h" 18 #include "min_allocator.h" 19 20 template <class S> 21 TEST_CONSTEXPR_CXX20 void 22 test(S s1, const typename S::value_type* s2) 23 { 24 typedef typename S::traits_type T; 25 s1 = s2; 26 LIBCPP_ASSERT(s1.__invariants()); 27 assert(s1.size() == T::length(s2)); 28 assert(T::compare(s1.data(), s2, s1.size()) == 0); 29 assert(s1.capacity() >= s1.size()); 30 } 31 32 bool test() { 33 { 34 typedef std::string S; 35 test(S(), ""); 36 test(S("1"), ""); 37 test(S(), "1"); 38 test(S("1"), "2"); 39 test(S("1"), "2"); 40 41 test(S(), 42 "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"); 43 test(S("123456789"), 44 "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"); 45 test(S("1234567890123456789012345678901234567890123456789012345678901234567890"), 46 "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"); 47 test(S("1234567890123456789012345678901234567890123456789012345678901234567890" 48 "1234567890123456789012345678901234567890123456789012345678901234567890"), 49 "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"); 50 } 51 #if TEST_STD_VER >= 11 52 { 53 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S; 54 test(S(), ""); 55 test(S("1"), ""); 56 test(S(), "1"); 57 test(S("1"), "2"); 58 test(S("1"), "2"); 59 60 test(S(), 61 "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"); 62 test(S("123456789"), 63 "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"); 64 test(S("1234567890123456789012345678901234567890123456789012345678901234567890"), 65 "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"); 66 test(S("1234567890123456789012345678901234567890123456789012345678901234567890" 67 "1234567890123456789012345678901234567890123456789012345678901234567890"), 68 "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"); 69 } 70 #endif 71 72 return true; 73 } 74 75 int main(int, char**) 76 { 77 test(); 78 #if TEST_STD_VER > 17 79 // static_assert(test()); 80 #endif 81 82 return 0; 83 } 84