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libcxx/test/std/utilities/any/any.nonmembers/swap.pass.cpp

49 lines
1.1 KiB
C++

//===----------------------------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11, c++14
// XFAIL: availability=macosx10.13
// XFAIL: availability=macosx10.12
// XFAIL: availability=macosx10.11
// XFAIL: availability=macosx10.10
// XFAIL: availability=macosx10.9
// XFAIL: availability=macosx10.8
// XFAIL: availability=macosx10.7
// <any>
// void swap(any &, any &) noexcept
// swap(...) just wraps any::swap(...). That function is tested elsewhere.
#include <any>
#include <cassert>
using std::any;
using std::any_cast;
int main()
{
{ // test noexcept
any a;
static_assert(noexcept(swap(a, a)), "swap(any&, any&) must be noexcept");
}
{
any a1(1);
any a2(2);
swap(a1, a2);
assert(any_cast<int>(a1) == 2);
assert(any_cast<int>(a2) == 1);
}
}