63 lines
1.5 KiB
C++
63 lines
1.5 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03
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// <string>
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// basic_string(basic_string<charT,traits,Allocator>&& str); // constexpr since C++20
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#include <string>
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#include <cassert>
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#include "test_macros.h"
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#include "test_allocator.h"
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#include "min_allocator.h"
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template <class S>
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TEST_CONSTEXPR_CXX20 void
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test(S s0)
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{
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S s1 = s0;
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S s2 = std::move(s0);
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LIBCPP_ASSERT(s2.__invariants());
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LIBCPP_ASSERT(s0.__invariants());
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assert(s2 == s1);
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assert(s2.capacity() >= s2.size());
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assert(s2.get_allocator() == s1.get_allocator());
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}
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TEST_CONSTEXPR_CXX20 bool test() {
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{
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typedef test_allocator<char> A;
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typedef std::basic_string<char, std::char_traits<char>, A> S;
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test(S(A(3)));
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test(S("1", A(5)));
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test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)));
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}
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{
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typedef min_allocator<char> A;
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typedef std::basic_string<char, std::char_traits<char>, A> S;
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test(S(A{}));
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test(S("1", A()));
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test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()));
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}
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return true;
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}
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int main(int, char**)
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{
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test();
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#if TEST_STD_VER > 17
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static_assert(test());
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#endif
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return 0;
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}
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