a90c6dd460
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@224658 91177308-0d34-0410-b5e6-96231b3b80d8
85 lines
2.5 KiB
C++
85 lines
2.5 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// UNSUPPORTED: libcpp-has-no-threads
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// <future>
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// class promise<R>
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// template <class Allocator>
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// promise(allocator_arg_t, const Allocator& a);
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#include <future>
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#include <cassert>
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#include "../test_allocator.h"
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#include "min_allocator.h"
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int main()
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{
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assert(test_alloc_base::count == 0);
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{
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std::promise<int> p(std::allocator_arg, test_allocator<int>());
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assert(test_alloc_base::count == 1);
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std::future<int> f = p.get_future();
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assert(test_alloc_base::count == 1);
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assert(f.valid());
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}
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assert(test_alloc_base::count == 0);
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{
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std::promise<int&> p(std::allocator_arg, test_allocator<int>());
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assert(test_alloc_base::count == 1);
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std::future<int&> f = p.get_future();
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assert(test_alloc_base::count == 1);
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assert(f.valid());
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}
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assert(test_alloc_base::count == 0);
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{
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std::promise<void> p(std::allocator_arg, test_allocator<void>());
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assert(test_alloc_base::count == 1);
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std::future<void> f = p.get_future();
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assert(test_alloc_base::count == 1);
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assert(f.valid());
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}
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assert(test_alloc_base::count == 0);
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// Test with a minimal allocator
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{
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std::promise<int> p(std::allocator_arg, bare_allocator<void>());
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std::future<int> f = p.get_future();
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assert(f.valid());
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}
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{
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std::promise<int&> p(std::allocator_arg, bare_allocator<void>());
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std::future<int&> f = p.get_future();
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assert(f.valid());
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}
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{
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std::promise<void> p(std::allocator_arg, bare_allocator<void>());
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std::future<void> f = p.get_future();
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assert(f.valid());
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}
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// Test with a minimal allocator that returns class-type pointers
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{
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std::promise<int> p(std::allocator_arg, min_allocator<void>());
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std::future<int> f = p.get_future();
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assert(f.valid());
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}
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{
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std::promise<int&> p(std::allocator_arg, min_allocator<void>());
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std::future<int&> f = p.get_future();
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assert(f.valid());
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}
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{
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std::promise<void> p(std::allocator_arg, min_allocator<void>());
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std::future<void> f = p.get_future();
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assert(f.valid());
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}
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}
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