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//===----------------------------------------------------------------------===//
//
// 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++98, c++03
// <string>
// basic_string<charT,traits,Allocator>&
// operator=(basic_string<charT,traits,Allocator>&& str);
#include <string>
#include <cassert>
#include "test_macros.h"
#include "test_allocator.h"
#include "min_allocator.h"
template <class S>
void
test(S s1, S s2)
{
S s0 = s2;
s1 = std::move(s2);
LIBCPP_ASSERT(s1.__invariants());
LIBCPP_ASSERT(s2.__invariants());
assert(s1 == s0);
assert(s1.capacity() >= s1.size());
}
int main()
{
{
typedef std::string S;
test(S(), S());
test(S("1"), S());
test(S(), S("1"));
test(S("1"), S("2"));
test(S("1"), S("2"));
test(S(),
S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
test(S("123456789"),
S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
test(S("1234567890123456789012345678901234567890123456789012345678901234567890"),
S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
test(S("1234567890123456789012345678901234567890123456789012345678901234567890"
"1234567890123456789012345678901234567890123456789012345678901234567890"),
S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
}
{
typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
test(S(), S());
test(S("1"), S());
test(S(), S("1"));
test(S("1"), S("2"));
test(S("1"), S("2"));
test(S(),
S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
test(S("123456789"),
S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
test(S("1234567890123456789012345678901234567890123456789012345678901234567890"),
S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
test(S("1234567890123456789012345678901234567890123456789012345678901234567890"
"1234567890123456789012345678901234567890123456789012345678901234567890"),
S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
}
}
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