libstdc++-v3/testsuite/20_util/is_aggregate/value.cc

   1 // { dg-options "-std=gnu++17" }
   2 // { dg-do compile { target c++17 } }
   3
   4 // Copyright (C) 2017-2019 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11 //
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16 //
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 #include <type_traits>
  22 #include <testsuite_tr1.h>
  23 #include <tuple>
  24
  25 template <class... T> void pos()
  26 {
  27   static_assert((std::is_aggregate_v<T> &&...));
  28 }
  29
  30 template <class... T> void neg()
  31 {
  32   static_assert((!std::is_aggregate_v<T> &&...));
  33 }
  34
  35 void test01()
  36 {
  37   using namespace __gnu_test;
  38   using __gnu_test::test_category;
  39   using std::is_aggregate;
  40
  41   // Positive tests.
  42   static_assert(test_category<is_aggregate,
  43                 ClassType>(true), "");
  44   static_assert(test_category<is_aggregate,
  45                 UnionType>(true), "");
  46   static_assert(test_category<is_aggregate,
  47                 SLType>(true), "");
  48   static_assert(test_category<is_aggregate,
  49                 NoexceptMoveAssignClass>(true), "");
  50   static_assert(test_category<is_aggregate,
  51                 unsigned[3]>(true), "");
  52   static_assert(test_category<is_aggregate,
  53                 unsigned[3][2]>(true), "");
  54   static_assert(test_category<is_aggregate,
  55                 unsigned[]>(true), "");
  56   static_assert(test_category<is_aggregate,
  57                 unsigned[][2]>(true), "");
  58   static_assert(test_category<is_aggregate,
  59                 EnumType[3]>(true), "");
  60   static_assert(test_category<is_aggregate,
  61                 EnumType[3][2]>(true), "");
  62   static_assert(test_category<is_aggregate,
  63                 EnumType[]>(true), "");
  64   static_assert(test_category<is_aggregate,
  65                 EnumType[][2]>(true), "");
  66   pos<ClassType, UnionType, SLType, NoexceptMoveAssignClass,
  67       unsigned[3], unsigned[3][2], unsigned[], unsigned[][3]>();
  68
  69   // Negative tests.
  70   static_assert(test_category<is_aggregate,
  71                 AbstractClass>(false), "");
  72   static_assert(test_category<is_aggregate,
  73                 PolymorphicClass>(false), "");
  74   static_assert(test_category<is_aggregate,
  75                 ExplicitClass>(false), "");
  76   static_assert(test_category<is_aggregate,
  77                 char>(false), "");
  78   static_assert(test_category<is_aggregate,
  79                 unsigned char>(false), "");
  80   static_assert(test_category<is_aggregate,
  81                 signed char>(false), "");
  82   static_assert(test_category<is_aggregate,
  83                 unsigned>(false), "");
  84   static_assert(test_category<is_aggregate,
  85                 bool>(false), "");
  86   static_assert(test_category<is_aggregate,
  87                 float>(false), "");
  88   static_assert(test_category<is_aggregate,
  89                 double>(false), "");
  90   static_assert(test_category<is_aggregate,
  91                 EnumType>(false), "");
  92   static_assert(test_category<is_aggregate,
  93                 void>(false), "");
  94   neg<AbstractClass, PolymorphicClass, ExplicitClass, char, unsigned,
  95       bool, float, double, void>();
  96 }