libcxx/test/std/containers/sequences/vector/vector.capacity/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
  11 // size_type capacity() const;
  12
  13 #include <vector>
  14 #include <cassert>
  15
  16 #include "test_macros.h"
  17 #include "min_allocator.h"
  18 #include "asan_testing.h"
  19
  20 TEST_CONSTEXPR_CXX20 bool tests()
  21 {
  22     {
  23         std::vector<int> v;
  24         assert(v.capacity() == 0);
  25         assert(is_contiguous_container_asan_correct(v));
  26     }
  27     {
  28         std::vector<int> v(100);
  29         assert(v.capacity() == 100);
  30         v.push_back(0);
  31         assert(v.capacity() > 101);
  32         assert(is_contiguous_container_asan_correct(v));
  33     }
  34 #if TEST_STD_VER >= 11
  35     {
  36         std::vector<int, min_allocator<int>> v;
  37         assert(v.capacity() == 0);
  38         assert(is_contiguous_container_asan_correct(v));
  39     }
  40     {
  41         std::vector<int, min_allocator<int>> v(100);
  42         assert(v.capacity() == 100);
  43         v.push_back(0);
  44         assert(v.capacity() > 101);
  45         assert(is_contiguous_container_asan_correct(v));
  46     }
  47 #endif
  48
  49     return true;
  50 }
  51
  52 int main(int, char**)
  53 {
  54     tests();
  55 #if TEST_STD_VER > 17
  56     static_assert(tests());
  57 #endif
  58     return 0;
  59 }