xref: /llvm-project-15.0.7/libcxx/test/std/strings/basic.string/string.cons/move.pass.cpp (revision 5a83710e)

//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

// <string>

// basic_string(basic_string<charT,traits,Allocator>&& str);

#include <string>
#include <cassert>

#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES

#include "test_allocator.h"
#include "min_allocator.h"

template <class S>
void
test(S s0)
{
    S s1 = s0;
    S s2 = std::move(s0);
    assert(s2.__invariants());
    assert(s0.__invariants());
    assert(s2 == s1);
    assert(s2.capacity() >= s2.size());
    assert(s2.get_allocator() == s1.get_allocator());
}

#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

int main()
{
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    {
    typedef test_allocator<char> A;
    typedef std::basic_string<char, std::char_traits<char>, A> S;
    test(S(A(3)));
    test(S("1", A(5)));
    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)));
    }
#if __cplusplus >= 201103L
    {
    typedef min_allocator<char> A;
    typedef std::basic_string<char, std::char_traits<char>, A> S;
    test(S(A{}));
    test(S("1", A()));
    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()));
    }
#endif
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
}