//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// <string>
// basic_string<charT,traits,Allocator>&
// assign(basic_string<charT,traits>&& str); // constexpr since C++20
#include <string>
#include <utility>
#include <cassert>
#include "test_macros.h"
#include "min_allocator.h"
template <class S>
TEST_CONSTEXPR_CXX20 void test(S s, S str, S expected) {
s.assign(std::move(str));
LIBCPP_ASSERT(s.__invariants());
assert(s == expected);
}
template <class S>
TEST_CONSTEXPR_CXX20 void test_string() {
test(S(), S(), S());
test(S(), S("12345"), S("12345"));
test(S(), S("1234567890"), S("1234567890"));
test(S(), S("12345678901234567890"), S("12345678901234567890"));
test(S("12345"), S(), S());
test(S("12345"), S("12345"), S("12345"));
test(S("12345"), S("1234567890"), S("1234567890"));
test(S("12345"), S("12345678901234567890"), S("12345678901234567890"));
test(S("1234567890"), S(), S());
test(S("1234567890"), S("12345"), S("12345"));
test(S("1234567890"), S("1234567890"), S("1234567890"));
test(S("1234567890"), S("12345678901234567890"), S("12345678901234567890"));
test(S("12345678901234567890"), S(), S());
test(S("12345678901234567890"), S("12345"), S("12345"));
test(S("12345678901234567890"), S("1234567890"), S("1234567890"));
test(S("12345678901234567890"), S("12345678901234567890"), S("12345678901234567890"));
}
TEST_CONSTEXPR_CXX20 bool test() {
test_string<std::string>();
#if TEST_STD_VER >= 11
test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
#endif
return true;
}
int main(int, char**) {
test();
#if TEST_STD_VER > 17
static_assert(test());
#endif
return 0;
}