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//===----------------------------------------------------------------------===//
//
// 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>
// any& operator=(any &&);
// Test move assignment.
#include <any>
#include <cassert>
#include "any_helpers.h"
#include "test_macros.h"
using std::any;
using std::any_cast;
template <class LHS, class RHS>
void test_move_assign() {
assert(LHS::count == 0);
assert(RHS::count == 0);
{
LHS const s1(1);
any a(s1);
RHS const s2(2);
any a2(s2);
assert(LHS::count == 2);
assert(RHS::count == 2);
a = std::move(a2);
assert(LHS::count == 1);
assert(RHS::count == 2 + a2.has_value());
LIBCPP_ASSERT(RHS::count == 2); // libc++ leaves the object empty
assertContains<RHS>(a, 2);
if (a2.has_value())
assertContains<RHS>(a2, 0);
LIBCPP_ASSERT(!a2.has_value());
}
assert(LHS::count == 0);
assert(RHS::count == 0);
}
template <class LHS>
void test_move_assign_empty() {
assert(LHS::count == 0);
{
any a;
any a2((LHS(1)));
assert(LHS::count == 1);
a = std::move(a2);
assert(LHS::count == 1 + a2.has_value());
LIBCPP_ASSERT(LHS::count == 1);
assertContains<LHS>(a, 1);
if (a2.has_value())
assertContains<LHS>(a2, 0);
LIBCPP_ASSERT(!a2.has_value());
}
assert(LHS::count == 0);
{
any a((LHS(1)));
any a2;
assert(LHS::count == 1);
a = std::move(a2);
assert(LHS::count == 0);
assertEmpty<LHS>(a);
assertEmpty(a2);
}
assert(LHS::count == 0);
}
void test_move_assign_noexcept() {
any a1;
any a2;
static_assert(
noexcept(a1 = std::move(a2))
, "any & operator=(any &&) must be noexcept"
);
}
int main() {
test_move_assign_noexcept();
test_move_assign<small1, small2>();
test_move_assign<large1, large2>();
test_move_assign<small, large>();
test_move_assign<large, small>();
test_move_assign_empty<small>();
test_move_assign_empty<large>();
}
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