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

   1 // { dg-do compile { target c++11 } }
   2
   3 // Copyright (C) 2013-2020 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10 //
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15 //
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 #include <type_traits>
  21 #include <testsuite_tr1.h>
  22
  23 void test01()
  24 {
  25   using std::is_class;
  26   using namespace __gnu_test;
  27
  28   // Positive tests.
  29   static_assert(test_category<is_class, ClassType>(true), "");
  30   static_assert(test_category<is_class, IncompleteClass>(true), "");
  31   static_assert(test_category<is_class, DerivedType>(true), "");
  32   static_assert(test_category<is_class, ConvType>(true), "");
  33   static_assert(test_category<is_class, AbstractClass>(true), "");
  34   static_assert(test_category<is_class, PolymorphicClass>(true), "");
  35   static_assert(test_category<is_class, DerivedPolymorphic>(true), "");
  36
  37   // Negative tests.
  38   static_assert(test_category<is_class, UnionType>(false), "");
  39   static_assert(test_category<is_class, void>(false), "");
  40   static_assert(test_category<is_class, int>(false), "");
  41   static_assert(test_category<is_class, float>(false), "");
  42   static_assert(test_category<is_class, int[2]>(false), "");
  43   static_assert(test_category<is_class, int*>(false), "");
  44   static_assert(test_category<is_class, int(*)(int)>(false), "");
  45   static_assert(test_category<is_class, float&>(false), "");
  46   static_assert(test_category<is_class, float(&)(float)>(false), "");
  47   static_assert(test_category<is_class, int (ClassType::*)>(false), "");
  48   static_assert(test_category<is_class, int (ClassType::*) (int)>(false), "");
  49   static_assert(test_category<is_class, int (int)>(false), "");
  50   static_assert(test_category<is_class, EnumType>(false), "");
  51   static_assert(test_category<is_class, IncompleteUnion>(false), "");
  52 }