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

   1 // { dg-do compile { target c++11 } }
   2
   3 // Copyright (C) 2013-2023 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 class HiddenCons
  24 {
  25   HiddenCons();
  26   HiddenCons(const HiddenCons&);
  27 };
  28
  29 class DerivedHiddenCons
  30 : private HiddenCons
  31 {
  32   DerivedHiddenCons();
  33   DerivedHiddenCons(const DerivedHiddenCons&);
  34 };
  35
  36 class MultiDerivedHiddenCons
  37 : private HiddenCons, private __gnu_test::ClassType
  38 {
  39   MultiDerivedHiddenCons();
  40   MultiDerivedHiddenCons(const MultiDerivedHiddenCons&);
  41 };
  42
  43 void test01()
  44 {
  45   using std::is_base_of;
  46   using namespace __gnu_test;
  47
  48   // Positive tests.
  49   static_assert(test_relationship<is_base_of, volatile ClassType,
  50                 ClassType>(true), "");
  51   static_assert(test_relationship<is_base_of, AbstractClass,
  52                 AbstractClass>(true), "");
  53   static_assert(test_relationship<is_base_of, ClassType,
  54                 DerivedType>(true), "");
  55   static_assert(test_relationship<is_base_of, ClassType,
  56                 const DerivedType>(true), "");
  57   static_assert(test_relationship<is_base_of, volatile ClassType,
  58                 volatile DerivedType>(true), "");
  59   static_assert(test_relationship<is_base_of, PolymorphicClass,
  60                 DerivedPolymorphic>(true), "");
  61   static_assert(test_relationship<is_base_of, HiddenCons,
  62                 DerivedHiddenCons>(true), "");
  63   static_assert(test_relationship<is_base_of, HiddenCons,
  64                 MultiDerivedHiddenCons>(true), "");
  65   static_assert(test_relationship<is_base_of, ClassType,
  66                 MultiDerivedHiddenCons>(true), "");
  67
  68   // Negative tests.
  69   static_assert(test_relationship<is_base_of, int, int>(false), "");
  70   static_assert(test_relationship<is_base_of, EnumType, EnumType>(false), "");
  71   static_assert(test_relationship<is_base_of, UnionType, UnionType>(false), "");
  72   static_assert(test_relationship<is_base_of, int, const int>(false), "");
  73   static_assert(test_relationship<is_base_of, volatile UnionType,
  74                 UnionType>(false), "");
  75   static_assert(test_relationship<is_base_of, int&, ClassType>(false), "");
  76   static_assert(test_relationship<is_base_of, AbstractClass,
  77                 ClassType>(false), "");
  78   static_assert(test_relationship<is_base_of, ClassType,
  79                 AbstractClass>(false), "");
  80   static_assert(test_relationship<is_base_of, DerivedType,
  81                 ClassType>(false), "");
  82   static_assert(test_relationship<is_base_of, DerivedPolymorphic,
  83                 PolymorphicClass>(false), "");
  84   static_assert(test_relationship<is_base_of, DerivedHiddenCons,
  85                 HiddenCons>(false), "");
  86   static_assert(test_relationship<is_base_of, MultiDerivedHiddenCons,
  87                 HiddenCons>(false), "");
  88   static_assert(test_relationship<is_base_of, MultiDerivedHiddenCons,
  89                 ClassType>(false), "");
  90 }