libstdc++-v3/testsuite/23_containers/stack/requirements/uses_allocator.cc

   1 // Copyright (C) 2014-2015 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-options "-std=gnu++11" }
  19 // { dg-do compile }
  20
  21 #include <stack>
  22
  23 using test_type = std::stack<int>;
  24 using container = test_type::container_type;
  25
  26 template<typename A>
  27   using uses_allocator = std::uses_allocator<test_type, A>;
  28
  29 template<typename... Args>
  30   using is_constructible = std::is_constructible<test_type, Args...>;
  31
  32 // test with valid allocator
  33 using alloc_type = container::allocator_type;
  34
  35 static_assert( uses_allocator<alloc_type>::value, "valid allocator" );
  36
  37 static_assert( is_constructible<const alloc_type&>::value,
  38                "stack(const Alloc&)" );
  39 static_assert( is_constructible<const container&, const alloc_type&>::value,
  40                "stack(const container_type&, const Alloc&)" );
  41 static_assert( is_constructible<container&&, const alloc_type&>::value,
  42                "stack(const container_type&, const Alloc&)" );
  43 static_assert( is_constructible<const test_type&, const alloc_type&>::value,
  44                "stack(const stack&, const Alloc&)" );
  45 static_assert( is_constructible<test_type&&, const alloc_type&>::value,
  46                "stack(const stack&, const Alloc&)" );
  47
  48 // test with invalid allocator
  49 struct X { };
  50
  51 static_assert( !uses_allocator<X>::value, "invalid allocator" );
  52
  53 static_assert( !is_constructible<const X&>::value,
  54                "stack(const NonAlloc&)" );
  55 static_assert( !is_constructible<const container&, const X&>::value,
  56                "stack(const container_type&, const NonAlloc&)" );
  57 static_assert( !is_constructible<container&&, const X&>::value,
  58                "stack(const container_type&, const NonAlloc&)" );
  59 static_assert( !is_constructible<const test_type&, const X&>::value,
  60                "stack(const stack&, const NonAlloc&)" );
  61 static_assert( !is_constructible<test_type&&, const X&>::value,
  62                "stack(const stack&, const NonAlloc&)" );