libstdc++-v3/testsuite/tr1/4_metaprogramming/is_convertible/value.cc

   1 // 2005-02-23  Paolo Carlini  <pcarlini@suse.de>
   2 //
   3 // Copyright (C) 2005-2021 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 // 4.6 Relationships between types
  21
  22 #include <tr1/type_traits>
  23 #include <testsuite_hooks.h>
  24 #include <testsuite_tr1.h>
  25
  26 void test01()
  27 {
  28   using std::tr1::is_convertible;
  29   using namespace __gnu_test;
  30
  31   // Positive tests.
  32   VERIFY( (test_relationship<is_convertible, int, int>(true)) );
  33   VERIFY( (test_relationship<is_convertible, int, const int>(true)) );
  34   VERIFY( (test_relationship<is_convertible, volatile int, const int>(true)) );
  35   VERIFY( (test_relationship<is_convertible, int, float>(true)) );
  36   VERIFY( (test_relationship<is_convertible, double, float>(true)) );
  37   VERIFY( (test_relationship<is_convertible, float, int>(true)) );
  38   VERIFY( (test_relationship<is_convertible, int*, const int*>(true)) );
  39   VERIFY( (test_relationship<is_convertible, int*, void*>(true)) );
  40   VERIFY( (test_relationship<is_convertible, int[4], int*>(true)) );
  41   VERIFY( (test_relationship<is_convertible, float&, int>(true)) );
  42   VERIFY( (test_relationship<is_convertible, int, const int&>(true)) );
  43   VERIFY( (test_relationship<is_convertible, const int&, int>(true)) );
  44   VERIFY( (test_relationship<is_convertible, float, const int&>(true)) );
  45   VERIFY( (test_relationship<is_convertible, float, volatile float&>(true)) );
  46   VERIFY( (test_relationship<is_convertible, int(int), int(*)(int)>(true)) );
  47   VERIFY( (test_relationship<is_convertible, int(int), int(&)(int)>(true)) );
  48   VERIFY( (test_relationship<is_convertible, int(&)(int), int(*)(int)>(true)) );
  49   VERIFY( (test_relationship<is_convertible, EnumType, int>(true)) );
  50   VERIFY( (test_relationship<is_convertible, ClassType, ClassType>(true)) );
  51   VERIFY( (test_relationship<is_convertible, DerivedType, ClassType>(true)) );
  52   VERIFY( (test_relationship<is_convertible, DerivedType*, ClassType*>(true)) );
  53   VERIFY( (test_relationship<is_convertible, DerivedType&, ClassType&>(true)) );
  54
  55   VERIFY( (test_relationship<is_convertible, void, void>(true)) );
  56   VERIFY( (test_relationship<is_convertible, int, void>(true)) );
  57   VERIFY( (test_relationship<is_convertible, int[4], void>(true)) );
  58
  59   // Negative tests.
  60   VERIFY( (test_relationship<is_convertible, const int*, int*>(false)) );
  61   VERIFY( (test_relationship<is_convertible, int*, float*>(false)) );
  62   VERIFY( (test_relationship<is_convertible, const int[4], int*>(false)) );
  63   VERIFY( (test_relationship<is_convertible, int[4], int[4]>(false)) );
  64   VERIFY( (test_relationship<is_convertible, const int&, int&>(false)) );
  65   VERIFY( (test_relationship<is_convertible, float&, int&>(false)) );
  66   VERIFY( (test_relationship<is_convertible, float, volatile int&>(false)) );
  67   VERIFY( (test_relationship<is_convertible, int(int), int(int)>(false)) );
  68   VERIFY( (test_relationship<is_convertible, int(int), int(*)(void)>(false)) );
  69   VERIFY( (test_relationship<is_convertible, int(*)(int), int(&)(int)>(false)) );
  70   VERIFY( (test_relationship<is_convertible, int, EnumType>(false)) );
  71   VERIFY( (test_relationship<is_convertible, int, ClassType>(false)) );
  72   VERIFY( (test_relationship<is_convertible, ClassType, DerivedType>(false)) );
  73   VERIFY( (test_relationship<is_convertible, ClassType*, DerivedType*>(false)) );
  74   VERIFY( (test_relationship<is_convertible, ClassType&, DerivedType&>(false)) );
  75
  76   VERIFY( (test_relationship<is_convertible, void, int>(false)) );
  77   VERIFY( (test_relationship<is_convertible, void, float>(false)) );
  78   VERIFY( (test_relationship<is_convertible, void, int(*)(int)>(false)) );
  79 }
  80
  81 int main()
  82 {
  83   test01();
  84   return 0;
  85 }