libcxx/test/std/containers/associative/map/map.access/at.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // <map>
  10
  11 // class map
  12
  13 //       mapped_type& at(const key_type& k);
  14 // const mapped_type& at(const key_type& k) const;
  15
  16 #include <cassert>
  17 #include <map>
  18 #include <stdexcept>
  19
  20 #include "min_allocator.h"
  21 #include "test_macros.h"
  22
  23 int main(int, char**)
  24 {
  25     {
  26         typedef std::pair<const int, double> V;
  27         V ar[] =
  28         {
  29             V(1, 1.5),
  30             V(2, 2.5),
  31             V(3, 3.5),
  32             V(4, 4.5),
  33             V(5, 5.5),
  34             V(7, 7.5),
  35             V(8, 8.5),
  36         };
  37         std::map<int, double> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
  38         assert(m.size() == 7);
  39         assert(m.at(1) == 1.5);
  40         m.at(1) = -1.5;
  41         assert(m.at(1) == -1.5);
  42         assert(m.at(2) == 2.5);
  43         assert(m.at(3) == 3.5);
  44         assert(m.at(4) == 4.5);
  45         assert(m.at(5) == 5.5);
  46 #ifndef TEST_HAS_NO_EXCEPTIONS
  47         try
  48         {
  49             TEST_IGNORE_NODISCARD m.at(6);
  50             assert(false);
  51         }
  52         catch (std::out_of_range&)
  53         {
  54         }
  55 #endif
  56         assert(m.at(7) == 7.5);
  57         assert(m.at(8) == 8.5);
  58         assert(m.size() == 7);
  59     }
  60     {
  61         typedef std::pair<const int, double> V;
  62         V ar[] =
  63         {
  64             V(1, 1.5),
  65             V(2, 2.5),
  66             V(3, 3.5),
  67             V(4, 4.5),
  68             V(5, 5.5),
  69             V(7, 7.5),
  70             V(8, 8.5),
  71         };
  72         const std::map<int, double> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
  73         assert(m.size() == 7);
  74         assert(m.at(1) == 1.5);
  75         assert(m.at(2) == 2.5);
  76         assert(m.at(3) == 3.5);
  77         assert(m.at(4) == 4.5);
  78         assert(m.at(5) == 5.5);
  79 #ifndef TEST_HAS_NO_EXCEPTIONS
  80         try
  81         {
  82             TEST_IGNORE_NODISCARD m.at(6);
  83             assert(false);
  84         }
  85         catch (std::out_of_range&)
  86         {
  87         }
  88 #endif
  89         assert(m.at(7) == 7.5);
  90         assert(m.at(8) == 8.5);
  91         assert(m.size() == 7);
  92     }
  93 #if TEST_STD_VER >= 11
  94     {
  95         typedef std::pair<const int, double> V;
  96         V ar[] =
  97         {
  98             V(1, 1.5),
  99             V(2, 2.5),
 100             V(3, 3.5),
 101             V(4, 4.5),
 102             V(5, 5.5),
 103             V(7, 7.5),
 104             V(8, 8.5),
 105         };
 106         std::map<int, double, std::less<int>, min_allocator<V>> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
 107         assert(m.size() == 7);
 108         assert(m.at(1) == 1.5);
 109         m.at(1) = -1.5;
 110         assert(m.at(1) == -1.5);
 111         assert(m.at(2) == 2.5);
 112         assert(m.at(3) == 3.5);
 113         assert(m.at(4) == 4.5);
 114         assert(m.at(5) == 5.5);
 115 #ifndef TEST_HAS_NO_EXCEPTIONS
 116         try
 117         {
 118             TEST_IGNORE_NODISCARD m.at(6);
 119             assert(false);
 120         }
 121         catch (std::out_of_range&)
 122         {
 123         }
 124 #endif
 125         assert(m.at(7) == 7.5);
 126         assert(m.at(8) == 8.5);
 127         assert(m.size() == 7);
 128     }
 129     {
 130         typedef std::pair<const int, double> V;
 131         V ar[] =
 132         {
 133             V(1, 1.5),
 134             V(2, 2.5),
 135             V(3, 3.5),
 136             V(4, 4.5),
 137             V(5, 5.5),
 138             V(7, 7.5),
 139             V(8, 8.5),
 140         };
 141         const std::map<int, double, std::less<int>, min_allocator<V>> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
 142         assert(m.size() == 7);
 143         assert(m.at(1) == 1.5);
 144         assert(m.at(2) == 2.5);
 145         assert(m.at(3) == 3.5);
 146         assert(m.at(4) == 4.5);
 147         assert(m.at(5) == 5.5);
 148 #ifndef TEST_HAS_NO_EXCEPTIONS
 149         try
 150         {
 151             TEST_IGNORE_NODISCARD m.at(6);
 152             assert(false);
 153         }
 154         catch (std::out_of_range&)
 155         {
 156         }
 157 #endif
 158         assert(m.at(7) == 7.5);
 159         assert(m.at(8) == 8.5);
 160         assert(m.size() == 7);
 161     }
 162 #endif
 163
 164   return 0;
 165 }