libcxx/test/std/containers/sequences/vector.bool/resize_size.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 // <vector>
  10 // vector<bool>
  11
  12 // void resize(size_type sz);
  13
  14 #include <vector>
  15 #include <cassert>
  16
  17 #include "test_macros.h"
  18 #include "min_allocator.h"
  19
  20 TEST_CONSTEXPR_CXX20 bool tests()
  21 {
  22     {
  23         std::vector<bool> v(100);
  24         v.resize(50);
  25         assert(v.size() == 50);
  26         assert(v.capacity() >= 100);
  27         v.resize(200);
  28         assert(v.size() == 200);
  29         assert(v.capacity() >= 200);
  30         v.reserve(400);
  31         v.resize(300);  // check the case when resizing and we already have room
  32         assert(v.size() == 300);
  33         assert(v.capacity() >= 400);
  34     }
  35 #if TEST_STD_VER >= 11
  36     {
  37         std::vector<bool, explicit_allocator<bool>> v;
  38         v.resize(10);
  39         assert(v.size() == 10);
  40         assert(v.capacity() >= 10);
  41     }
  42     {
  43         std::vector<bool, min_allocator<bool>> v(100);
  44         v.resize(50);
  45         assert(v.size() == 50);
  46         assert(v.capacity() >= 100);
  47         v.resize(200);
  48         assert(v.size() == 200);
  49         assert(v.capacity() >= 200);
  50         v.reserve(400);
  51         v.resize(300);  // check the case when resizing and we already have room
  52         assert(v.size() == 300);
  53         assert(v.capacity() >= 400);
  54     }
  55 #endif
  56
  57     return true;
  58 }
  59
  60 int main(int, char**)
  61 {
  62     tests();
  63 #if TEST_STD_VER > 17
  64     static_assert(tests());
  65 #endif
  66     return 0;
  67 }