llvm/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.cnstr/default.pass.cpp

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

// UNSUPPORTED: c++03

// <memory>

// template <class OuterAlloc, class... InnerAllocs>
//   class scoped_allocator_adaptor

// scoped_allocator_adaptor();

#include <scoped_allocator>
#include <cassert>

#include "test_macros.h"
#include "allocators.h"

int main(int, char**) {
  {
    typedef std::scoped_allocator_adaptor<A1<int>> A;
    A a;
    assert(a.outer_allocator() == A1<int>());
    assert(a.inner_allocator() == a);
    assert(A1<int>::copy_called == false);
    assert(A1<int>::move_called == false);
  }
  {
    typedef std::scoped_allocator_adaptor<A1<int>, A2<int>> A;
    A a;
    assert(a.outer_allocator() == A1<int>());
    assert(a.inner_allocator() == std::scoped_allocator_adaptor<A2<int>>());
    assert(A1<int>::copy_called == false);
    assert(A1<int>::move_called == false);
    assert(A2<int>::copy_called == false);
    assert(A2<int>::move_called == false);
  }
  {
    typedef std::scoped_allocator_adaptor<A1<int>, A2<int>, A3<int>> A;
    A a;
    assert(a.outer_allocator() == A1<int>());
    assert((a.inner_allocator() == std::scoped_allocator_adaptor<A2<int>, A3<int>>()));
    assert(A1<int>::copy_called == false);
    assert(A1<int>::move_called == false);
    assert(A2<int>::copy_called == false);
    assert(A2<int>::move_called == false);
    assert(A3<int>::copy_called == false);
    assert(A3<int>::move_called == false);
  }

  return 0;
}