libcxx/test/std/containers/sequences/vector.bool/emplace.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 // UNSUPPORTED: c++98, c++03, c++11
  10 // <vector>
  11 //  vector<bool>
  12
  13 // template <class... Args> iterator emplace(const_iterator pos, Args&&... args);
  14
  15 #include <vector>
  16 #include <cassert>
  17 #include "test_macros.h"
  18 #include "min_allocator.h"
  19
  20 int main(int, char**)
  21 {
  22     {
  23         typedef std::vector<bool> C;
  24         C c;
  25
  26         C::iterator i = c.emplace(c.cbegin());
  27         assert(i == c.begin());
  28         assert(c.size() == 1);
  29         assert(c.front() == false);
  30
  31         i = c.emplace(c.cend(), true);
  32         assert(i == c.end()-1);
  33         assert(c.size() == 2);
  34         assert(c.front() == false);
  35         assert(c.back() == true);
  36
  37         i = c.emplace(c.cbegin()+1, true);
  38         assert(i == c.begin()+1);
  39         assert(c.size() == 3);
  40         assert(c.front() == false);
  41         assert(c[1] == true);
  42         assert(c.back() == true);
  43     }
  44     {
  45         typedef std::vector<bool, min_allocator<bool>> C;
  46         C c;
  47
  48         C::iterator i = c.emplace(c.cbegin());
  49         assert(i == c.begin());
  50         assert(c.size() == 1);
  51         assert(c.front() == false);
  52
  53         i = c.emplace(c.cend(), true);
  54         assert(i == c.end()-1);
  55         assert(c.size() == 2);
  56         assert(c.front() == false);
  57         assert(c.back() == true);
  58
  59         i = c.emplace(c.cbegin()+1, true);
  60         assert(i == c.begin()+1);
  61         assert(c.size() == 3);
  62         assert(c.size() == 3);
  63         assert(c.front() == false);
  64         assert(c[1] == true);
  65         assert(c.back() == true);
  66     }
  67
  68   return 0;
  69 }