libcxx/test/std/experimental/filesystem/fs.enum/enum.directory_options.pass.cpp

//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

// UNSUPPORTED: c++98, c++03

// <experimental/filesystem>

// enum class directory_options;

#include <experimental/filesystem>
#include <type_traits>
#include <cassert>
#include <sys/stat.h>

#include "test_macros.h"
#include "check_bitmask_types.hpp"

namespace fs = std::experimental::filesystem;

constexpr fs::directory_options ME(int val) { return static_cast<fs::directory_options>(val); }

int main() {
  typedef fs::directory_options E;
  static_assert(std::is_enum<E>::value, "");

  // Check that E is a scoped enum by checking for conversions.
  typedef std::underlying_type<E>::type UT;
  static_assert(!std::is_convertible<E, UT>::value, "");
  static_assert(std::is_same<UT, unsigned char>::value, "");

  typedef check_bitmask_type<E, E::follow_directory_symlink, E::skip_permission_denied> BitmaskTester;
  assert(BitmaskTester::check());

  static_assert(
        E::none                     == ME(0) &&
        E::follow_directory_symlink == ME(1) &&
        E::skip_permission_denied   == ME(2),
        "Expected enumeration values do not match");

}