src/third_party/libc++/trunk/test/containers/unord/unord.map/count.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is dual licensed under the MIT and the University of Illinois Open
   6 // Source Licenses. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 // <unordered_map>
  11
  12 // template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
  13 //           class Alloc = allocator<pair<const Key, T>>>
  14 // class unordered_map
  15
  16 // size_type count(const key_type& k) const;
  17
  18 #include <unordered_map>
  19 #include <string>
  20 #include <cassert>
  21
  22 #include "min_allocator.h"
  23
  24 int main()
  25 {
  26     {
  27         typedef std::unordered_map<int, std::string> C;
  28         typedef std::pair<int, std::string> P;
  29         P a[] =
  30         {
  31             P(10, "ten"),
  32             P(20, "twenty"),
  33             P(30, "thirty"),
  34             P(40, "forty"),
  35             P(50, "fifty"),
  36             P(60, "sixty"),
  37             P(70, "seventy"),
  38             P(80, "eighty"),
  39         };
  40         const C c(std::begin(a), std::end(a));
  41         assert(c.count(30) == 1);
  42         assert(c.count(5) == 0);
  43     }
  44 #if __cplusplus >= 201103L
  45     {
  46         typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
  47                             min_allocator<std::pair<const int, std::string>>> C;
  48         typedef std::pair<int, std::string> P;
  49         P a[] =
  50         {
  51             P(10, "ten"),
  52             P(20, "twenty"),
  53             P(30, "thirty"),
  54             P(40, "forty"),
  55             P(50, "fifty"),
  56             P(60, "sixty"),
  57             P(70, "seventy"),
  58             P(80, "eighty"),
  59         };
  60         const C c(std::begin(a), std::end(a));
  61         assert(c.count(30) == 1);
  62         assert(c.count(5) == 0);
  63     }
  64 #endif
  65 }