libcxx/test/std/containers/unord/unord.multimap/iterators.compile.fail.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 // <unordered_map>
  10
  11 // template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
  12 //           class Alloc = allocator<pair<const Key, T>>>
  13 // class unordered_multimap
  14
  15 // iterator       begin()        {return __table_.begin();}
  16 // iterator       end()          {return __table_.end();}
  17 // const_iterator begin()  const {return __table_.begin();}
  18 // const_iterator end()    const {return __table_.end();}
  19 // const_iterator cbegin() const {return __table_.begin();}
  20 // const_iterator cend()   const {return __table_.end();}
  21
  22 #include <unordered_map>
  23 #include <string>
  24 #include <cassert>
  25
  26 #include "test_macros.h"
  27
  28 int main(int, char**)
  29 {
  30     {
  31         typedef std::unordered_multimap<int, std::string> C;
  32         typedef std::pair<int, std::string> P;
  33         P a[] =
  34         {
  35             P(1, "one"),
  36             P(2, "two"),
  37             P(3, "three"),
  38             P(4, "four"),
  39             P(1, "four"),
  40             P(2, "four"),
  41         };
  42         C c(a, a + sizeof(a)/sizeof(a[0]));
  43         LIBCPP_ASSERT(c.bucket_count() == 7);
  44         assert(c.size() == 6);
  45         assert(std::distance(c.begin(), c.end()) == c.size());
  46         assert(std::distance(c.cbegin(), c.cend()) == c.size());
  47         C::iterator i = c.begin();
  48         i->second = "ONE";
  49         assert(i->second == "ONE");
  50         i->first = 2;
  51     }
  52     {
  53         typedef std::unordered_multimap<int, std::string> C;
  54         typedef std::pair<int, std::string> P;
  55         P a[] =
  56         {
  57             P(1, "one"),
  58             P(2, "two"),
  59             P(3, "three"),
  60             P(4, "four"),
  61             P(1, "four"),
  62             P(2, "four"),
  63         };
  64         const C c(a, a + sizeof(a)/sizeof(a[0]));
  65         LIBCPP_ASSERT(c.bucket_count() == 7);
  66         assert(c.size() == 6);
  67         assert(std::distance(c.begin(), c.end()) == c.size());
  68         assert(std::distance(c.cbegin(), c.cend()) == c.size());
  69     }
  70
  71   return 0;
  72 }