87 lines
2.6 KiB
C++
87 lines
2.6 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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// <tuple>
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// template <class... Types> class tuple;
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// template <class Alloc>
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// tuple(allocator_arg_t, const Alloc& a, tuple&&);
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// UNSUPPORTED: c++03
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#include <tuple>
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#include <cassert>
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#include "test_macros.h"
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#include "MoveOnly.h"
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#include "allocators.h"
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#include "../alloc_first.h"
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#include "../alloc_last.h"
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int main(int, char**)
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{
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{
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typedef std::tuple<> T;
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T t0;
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T t(std::allocator_arg, A1<int>(), std::move(t0));
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}
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{
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typedef std::tuple<MoveOnly> T;
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T t0(MoveOnly(0));
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T t(std::allocator_arg, A1<int>(), std::move(t0));
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assert(std::get<0>(t) == 0);
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}
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{
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typedef std::tuple<alloc_first> T;
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T t0(1);
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alloc_first::allocator_constructed = false;
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T t(std::allocator_arg, A1<int>(5), std::move(t0));
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assert(alloc_first::allocator_constructed);
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assert(std::get<0>(t) == 1);
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}
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{
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typedef std::tuple<alloc_last> T;
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T t0(1);
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alloc_last::allocator_constructed = false;
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T t(std::allocator_arg, A1<int>(5), std::move(t0));
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assert(alloc_last::allocator_constructed);
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assert(std::get<0>(t) == 1);
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}
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{
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typedef std::tuple<MoveOnly, alloc_first> T;
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T t0(0 ,1);
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alloc_first::allocator_constructed = false;
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T t(std::allocator_arg, A1<int>(5), std::move(t0));
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assert(alloc_first::allocator_constructed);
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assert(std::get<0>(t) == 0);
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assert(std::get<1>(t) == 1);
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}
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{
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typedef std::tuple<MoveOnly, alloc_first, alloc_last> T;
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T t0(1, 2, 3);
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alloc_first::allocator_constructed = false;
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alloc_last::allocator_constructed = false;
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T t(std::allocator_arg, A1<int>(5), std::move(t0));
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assert(alloc_first::allocator_constructed);
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assert(alloc_last::allocator_constructed);
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assert(std::get<0>(t) == 1);
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assert(std::get<1>(t) == 2);
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assert(std::get<2>(t) == 3);
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}
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{
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// Test that we can use a tag derived from allocator_arg_t
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struct DerivedFromAllocatorArgT : std::allocator_arg_t { };
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DerivedFromAllocatorArgT derived;
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std::tuple<int> from(3);
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std::tuple<int> t0(derived, A1<int>(), std::move(from));
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}
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return 0;
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}
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