third_party/llvm-project/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.create/make_unique.array.pass.cpp

//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//

// UNSUPPORTED: c++03, c++11
#include <memory>
#include <string>
#include <cassert>

#include "test_macros.h"

//    The only way to create an unique_ptr<T[]> is to default construct them.

class foo {
public:
  TEST_CONSTEXPR_CXX23 foo() : val_(3) {}
  TEST_CONSTEXPR_CXX23 int get() const { return val_; }

private:
  int val_;
};

TEST_CONSTEXPR_CXX23 bool test() {
  {
    auto p1 = std::make_unique<int[]>(5);
    for (int i = 0; i < 5; ++i)
      assert(p1[i] == 0);
  }

  {
    auto p2 = std::make_unique<std::string[]>(5);
    for (int i = 0; i < 5; ++i)
      assert(p2[i].size() == 0);
  }

  {
    auto p3 = std::make_unique<foo[]>(7);
    for (int i = 0; i < 7; ++i)
      assert(p3[i].get() == 3);
  }

  return true;
}

int main(int, char**) {
  test();
#if TEST_STD_VER >= 23
  static_assert(test());
#endif

  return 0;
}