libcxx/test/std/containers/sequences/vector/vector.capacity/swap.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 // void swap(vector& x);
  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         std::vector<int> v1(100);
  23         std::vector<int> v2(200);
  24         assert(is_contiguous_container_asan_correct(v1));
  25         assert(is_contiguous_container_asan_correct(v2));
  26         v1.swap(v2);
  27         assert(v1.size() == 200);
  28         assert(v1.capacity() == 200);
  29         assert(is_contiguous_container_asan_correct(v1));
  30         assert(v2.size() == 100);
  31         assert(v2.capacity() == 100);
  32         assert(is_contiguous_container_asan_correct(v2));
  33     }
  34 #if TEST_STD_VER >= 11
  35     {
  36         std::vector<int, min_allocator<int>> v1(100);
  37         std::vector<int, min_allocator<int>> v2(200);
  38         assert(is_contiguous_container_asan_correct(v1));
  39         assert(is_contiguous_container_asan_correct(v2));
  40         v1.swap(v2);
  41         assert(v1.size() == 200);
  42         assert(v1.capacity() == 200);
  43         assert(is_contiguous_container_asan_correct(v1));
  44         assert(v2.size() == 100);
  45         assert(v2.capacity() == 100);
  46         assert(is_contiguous_container_asan_correct(v2));
  47     }
  48     {
  49       std::vector<int, safe_allocator<int>> v1(100);
  50       std::vector<int, safe_allocator<int>> v2(200);
  51       assert(is_contiguous_container_asan_correct(v1));
  52       assert(is_contiguous_container_asan_correct(v2));
  53       v1.swap(v2);
  54       assert(v1.size() == 200);
  55       assert(v1.capacity() == 200);
  56       assert(is_contiguous_container_asan_correct(v1));
  57       assert(v2.size() == 100);
  58       assert(v2.capacity() == 100);
  59       assert(is_contiguous_container_asan_correct(v2));
  60     }
  61 #endif
  62
  63     return true;
  64 }
  65
  66 int main(int, char**)
  67 {
  68     tests();
  69 #if TEST_STD_VER > 17
  70     static_assert(tests());
  71 #endif
  72     return 0;
  73 }