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

   1 // { dg-options "-std=gnu++11" }
   2 // { dg-do compile }
   3
   4 // 2009-10-29  Paolo Carlini  <paolo.carlini@oracle.com>
   5 //
   6 // Copyright (C) 2009-2013 Free Software Foundation, Inc.
   7 //
   8 // This file is part of the GNU ISO C++ Library.  This library is free
   9 // software; you can redistribute it and/or modify it under the
  10 // terms of the GNU General Public License as published by the
  11 // Free Software Foundation; either version 3, or (at your option)
  12 // any later version.
  13 //
  14 // This library is distributed in the hope that it will be useful,
  15 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 // GNU General Public License for more details.
  18 //
  19 // You should have received a copy of the GNU General Public License along
  20 // with this library; see the file COPYING3.  If not see
  21 // <http://www.gnu.org/licenses/>.
  22
  23 #include <type_traits>
  24 #include <testsuite_tr1.h>
  25
  26 void test01()
  27 {
  28   using std::is_convertible;
  29   using namespace __gnu_test;
  30
  31   // Positive tests.
  32   static_assert(test_relationship<is_convertible, int, int>(true), "");
  33   static_assert(test_relationship<is_convertible, int, const int>(true), "");
  34   static_assert(test_relationship<is_convertible,
  35                 volatile int, const int>(true), "");
  36   static_assert(test_relationship<is_convertible, int, float>(true), "");
  37   static_assert(test_relationship<is_convertible, double, float>(true), "");
  38   static_assert(test_relationship<is_convertible, float, int>(true), "");
  39   static_assert(test_relationship<is_convertible, int*, const int*>(true), "");
  40   static_assert(test_relationship<is_convertible, int*, void*>(true), "");
  41   static_assert(test_relationship<is_convertible, int[4], int*>(true), "");
  42   static_assert(test_relationship<is_convertible, float&, int>(true), "");
  43   static_assert(test_relationship<is_convertible, int, const int&>(true), "");
  44   static_assert(test_relationship<is_convertible, const int&, int>(true), "");
  45   static_assert(test_relationship<is_convertible, float, const int&>(true), "");
  46   static_assert(test_relationship<is_convertible, int(int),
  47                 int(*)(int)>(true), "");
  48   static_assert(test_relationship<is_convertible,
  49                 int(&)(int), int(*)(int)>(true), "");
  50   static_assert(test_relationship<is_convertible, EnumType, int>(true), "");
  51   static_assert(test_relationship<is_convertible, ClassType,
  52                 ClassType>(true), "");
  53   static_assert(test_relationship<is_convertible, DerivedType,
  54                 ClassType>(true), "");
  55   static_assert(test_relationship<is_convertible, DerivedType*,
  56                 ClassType*>(true), "");
  57   static_assert(test_relationship<is_convertible, DerivedType&,
  58                 ClassType&>(true), "");
  59
  60   static_assert(test_relationship<is_convertible, const int,
  61                 const int&>(true), "");
  62
  63   static_assert(test_relationship<is_convertible, void, void>(true), "");
  64   static_assert(test_relationship<is_convertible, const void, void>(true), "");
  65   static_assert(test_relationship<is_convertible, void,
  66                 volatile void>(true), "");
  67   static_assert(test_relationship<is_convertible, double&,
  68                 ExplicitClass>(true), "");
  69
  70   static_assert(test_relationship<is_convertible, int(int),
  71                 int(&)(int)>(true), "");
  72
  73   // Negative tests.
  74   static_assert(test_relationship<is_convertible, const int*, int*>(false), "");
  75   static_assert(test_relationship<is_convertible, int*, float*>(false), "");
  76   static_assert(test_relationship<is_convertible, const int[4],
  77                 int*>(false), "");
  78   static_assert(test_relationship<is_convertible, int[4], int[4]>(false), "");
  79   static_assert(test_relationship<is_convertible, const int&, int&>(false), "");
  80   static_assert(test_relationship<is_convertible, float&, int&>(false), "");
  81   static_assert(test_relationship<is_convertible, float,
  82                 volatile int&>(false), "");
  83   static_assert(test_relationship<is_convertible, int(int),
  84                 int(int)>(false), "");
  85   static_assert(test_relationship<is_convertible, int(int),
  86                 int(*)(void)>(false), "");
  87   static_assert(test_relationship<is_convertible, int(*)(int),
  88                 int(&)(int)>(false), "");
  89   static_assert(test_relationship<is_convertible, int, EnumType>(false), "");
  90   static_assert(test_relationship<is_convertible, int, ClassType>(false), "");
  91   static_assert(test_relationship<is_convertible, ClassType,
  92                 DerivedType>(false), "");
  93   static_assert(test_relationship<is_convertible, ClassType*,
  94                 DerivedType*>(false), "");
  95   static_assert(test_relationship<is_convertible, ClassType&,
  96                 DerivedType&>(false), "");
  97
  98   static_assert(test_relationship<is_convertible, void, int>(false), "");
  99   static_assert(test_relationship<is_convertible, void, float>(false), "");
 100   static_assert(test_relationship<is_convertible, void,
 101                 int(*)(int)>(false), "");
 102
 103   // C++0x
 104   static_assert(test_relationship<is_convertible, int, void>(false), "");
 105   static_assert(test_relationship<is_convertible, int[4], void>(false), "");
 106
 107   static_assert(test_relationship<is_convertible, int, int&>(false), "");
 108   static_assert(test_relationship<is_convertible, float,
 109                 volatile float&>(false), "");
 110   static_assert(test_relationship<is_convertible, const volatile int,
 111                 const volatile int&>(false), "");
 112   static_assert(test_relationship<is_convertible, volatile int,
 113                 volatile int&>(false), "");
 114   static_assert(test_relationship<is_convertible, int&,
 115                 ExplicitClass>(false), "");
 116   static_assert(test_relationship<is_convertible, void*,
 117                 ExplicitClass>(false), "");
 118 }