File: swap.pass.cpp

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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

// <vector>
// vector<bool>

// void swap(vector& x);

#include <vector>
#include <cassert>
#include "test_macros.h"
#include "test_allocator.h"
#include "min_allocator.h"

TEST_CONSTEXPR_CXX20 bool tests() {
  {
    std::vector<bool> v1(100);
    std::vector<bool> v2(200);
    v1.swap(v2);
    assert(v1.size() == 200);
    assert(v1.capacity() >= 200);
    assert(v2.size() == 100);
    assert(v2.capacity() >= 100);
  }
  {
    typedef test_allocator<bool> A;
    std::vector<bool, A> v1(100, true, A(1, 1));
    std::vector<bool, A> v2(200, false, A(1, 2));
    swap(v1, v2);
    assert(v1.size() == 200);
    assert(v1.capacity() >= 200);
    assert(v2.size() == 100);
    assert(v2.capacity() >= 100);
    assert(v1.get_allocator().get_id() == 1);
    assert(v2.get_allocator().get_id() == 2);
  }
  {
    typedef other_allocator<bool> A;
    std::vector<bool, A> v1(100, true, A(1));
    std::vector<bool, A> v2(200, false, A(2));
    swap(v1, v2);
    assert(v1.size() == 200);
    assert(v1.capacity() >= 200);
    assert(v2.size() == 100);
    assert(v2.capacity() >= 100);
    assert(v1.get_allocator() == A(2));
    assert(v2.get_allocator() == A(1));
  }
  {
    std::vector<bool> v(2);
    std::vector<bool>::reference r1 = v[0];
    std::vector<bool>::reference r2 = v[1];
    r1                              = true;
    using std::swap;
    swap(r1, r2);
    assert(v[0] == false);
    assert(v[1] == true);
  }
#if TEST_STD_VER >= 11
  {
    std::vector<bool, min_allocator<bool>> v1(100);
    std::vector<bool, min_allocator<bool>> v2(200);
    v1.swap(v2);
    assert(v1.size() == 200);
    assert(v1.capacity() >= 200);
    assert(v2.size() == 100);
    assert(v2.capacity() >= 100);
  }
  {
    typedef min_allocator<bool> A;
    std::vector<bool, A> v1(100, true, A());
    std::vector<bool, A> v2(200, false, A());
    swap(v1, v2);
    assert(v1.size() == 200);
    assert(v1.capacity() >= 200);
    assert(v2.size() == 100);
    assert(v2.capacity() >= 100);
    assert(v1.get_allocator() == A());
    assert(v2.get_allocator() == A());
  }
  {
    std::vector<bool, min_allocator<bool>> v(2);
    std::vector<bool, min_allocator<bool>>::reference r1 = v[0];
    std::vector<bool, min_allocator<bool>>::reference r2 = v[1];
    r1                                                   = true;
    using std::swap;
    swap(r1, r2);
    assert(v[0] == false);
    assert(v[1] == true);
  }
#endif

  return true;
}

int main(int, char**) {
  tests();
#if TEST_STD_VER > 17
  static_assert(tests());
#endif
  return 0;
}