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138 lines
2.8 KiB
C++
138 lines
2.8 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++98, c++03, c++11, c++14
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// XFAIL: dylib-has-no-bad_any_cast && !libcpp-no-exceptions
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// <any>
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// any::swap(any &) noexcept
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// Test swap(large, small) and swap(small, large)
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#include <any>
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#include <cassert>
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#include "test_macros.h"
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#include "any_helpers.h"
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using std::any;
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using std::any_cast;
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template <class LHS, class RHS>
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void test_swap() {
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assert(LHS::count == 0);
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assert(RHS::count == 0);
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{
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any a1((LHS(1)));
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any a2(RHS{2});
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assert(LHS::count == 1);
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assert(RHS::count == 1);
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a1.swap(a2);
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assert(LHS::count == 1);
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assert(RHS::count == 1);
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assertContains<RHS>(a1, 2);
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assertContains<LHS>(a2, 1);
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}
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assert(LHS::count == 0);
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assert(RHS::count == 0);
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assert(LHS::copied == 0);
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assert(RHS::copied == 0);
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}
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template <class Tp>
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void test_swap_empty() {
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assert(Tp::count == 0);
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{
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any a1((Tp(1)));
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any a2;
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assert(Tp::count == 1);
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a1.swap(a2);
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assert(Tp::count == 1);
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assertContains<Tp>(a2, 1);
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assertEmpty(a1);
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}
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assert(Tp::count == 0);
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{
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any a1((Tp(1)));
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any a2;
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assert(Tp::count == 1);
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a2.swap(a1);
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assert(Tp::count == 1);
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assertContains<Tp>(a2, 1);
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assertEmpty(a1);
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}
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assert(Tp::count == 0);
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assert(Tp::copied == 0);
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}
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void test_noexcept()
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{
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any a1;
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any a2;
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static_assert(
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noexcept(a1.swap(a2))
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, "any::swap(any&) must be noexcept"
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);
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}
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void test_self_swap() {
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{
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// empty
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any a;
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a.swap(a);
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assertEmpty(a);
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}
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{ // small
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using T = small;
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any a{T{42}};
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T::reset();
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a.swap(a);
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assertContains<T>(a, 42);
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assert(T::count == 1);
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assert(T::copied == 0);
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LIBCPP_ASSERT(T::moved == 0);
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}
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assert(small::count == 0);
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{ // large
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using T = large;
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any a{T{42}};
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T::reset();
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a.swap(a);
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assertContains<T>(a, 42);
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assert(T::count == 1);
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assert(T::copied == 0);
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LIBCPP_ASSERT(T::moved == 0);
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}
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assert(large::count == 0);
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}
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int main(int, char**)
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{
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test_noexcept();
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test_swap_empty<small>();
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test_swap_empty<large>();
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test_swap<small1, small2>();
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test_swap<large1, large2>();
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test_swap<small, large>();
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test_swap<large, small>();
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test_self_swap();
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return 0;
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}
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