libcxx/test/std/containers/sequences/vector.bool/capacity.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 // size_type capacity() const;
  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;
  24         assert(v.capacity() == 0);
  25     }
  26     {
  27         std::vector<bool> v(100);
  28         assert(v.capacity() >= 100);
  29         v.push_back(0);
  30         assert(v.capacity() >= 101);
  31     }
  32 #if TEST_STD_VER >= 11
  33     {
  34         std::vector<bool, min_allocator<bool>> v;
  35         assert(v.capacity() == 0);
  36     }
  37     {
  38         std::vector<bool, min_allocator<bool>> v(100);
  39         assert(v.capacity() >= 100);
  40         v.push_back(0);
  41         assert(v.capacity() >= 101);
  42     }
  43 #endif
  44
  45     return true;
  46 }
  47
  48 int main(int, char**)
  49 {
  50     tests();
  51 #if TEST_STD_VER > 17
  52     static_assert(tests());
  53 #endif
  54     return 0;
  55 }