| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // UNSUPPORTED: c++03 |
| |
| // <string> |
| |
| // basic_string& append(initializer_list<charT> il); // constexpr since C++20 |
| |
| #include <string> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| #include "min_allocator.h" |
| #include "nasty_string.h" |
| |
| template <class S> |
| TEST_CONSTEXPR_CXX20 void test() { |
| using CharT = typename S::value_type; |
| |
| S s(CONVERT_TO_CSTRING(CharT, "123")); |
| s.append({CharT('a'), CharT('b'), CharT('c')}); |
| assert(s == CONVERT_TO_CSTRING(CharT, "123abc")); |
| } |
| |
| TEST_CONSTEXPR_CXX20 bool test() { |
| test<std::string>(); |
| #ifndef TEST_HAS_NO_WIDE_CHARACTERS |
| test<std::wstring>(); |
| #endif |
| #if TEST_STD_VER >= 20 |
| test<std::u8string>(); |
| #endif |
| test<std::u16string>(); |
| test<std::u32string>(); |
| |
| test<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>(); |
| #ifndef TEST_HAS_NO_NASTY_STRING |
| test<nasty_string>(); |
| #endif |
| |
| return true; |
| } |
| |
| int main(int, char**) { |
| test(); |
| #if TEST_STD_VER > 17 |
| static_assert(test()); |
| #endif |
| |
| return 0; |
| } |