66 lines · 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-exception6//7//===----------------------------------------------------------------------===//8 9// UNSUPPORTED: c++03, c++11, c++1410 11// <filesystem>12 13// enum class copy_options;14 15#include <filesystem>16#include <type_traits>17#include <cassert>18 19#include "check_bitmask_types.h"20#include "test_macros.h"21namespace fs = std::filesystem;22 23constexpr fs::copy_options ME(int val) { return static_cast<fs::copy_options>(val); }24 25int main(int, char**) {26 typedef fs::copy_options E;27 static_assert(std::is_enum<E>::value, "");28 29 // Check that E is a scoped enum by checking for conversions.30 typedef std::underlying_type<E>::type UT;31 static_assert(!std::is_convertible<E, UT>::value, "");32 33 LIBCPP_STATIC_ASSERT(std::is_same<UT, unsigned short>::value, ""); // Implementation detail34 35 typedef check_bitmask_type<E, E::skip_existing, E::update_existing> BitmaskTester;36 assert(BitmaskTester::check());37 38 // The standard doesn't specify the numeric values of the enum.39 LIBCPP_STATIC_ASSERT(40 E::none == ME(0),41 "Expected enumeration values do not match");42 // Option group for copy_file43 LIBCPP_STATIC_ASSERT(44 E::skip_existing == ME(1) &&45 E::overwrite_existing == ME(2) &&46 E::update_existing == ME(4),47 "Expected enumeration values do not match");48 // Option group for copy on directories49 LIBCPP_STATIC_ASSERT(50 E::recursive == ME(8),51 "Expected enumeration values do not match");52 // Option group for copy on symlinks53 LIBCPP_STATIC_ASSERT(54 E::copy_symlinks == ME(16) &&55 E::skip_symlinks == ME(32),56 "Expected enumeration values do not match");57 // Option group for changing form of copy58 LIBCPP_STATIC_ASSERT(59 E::directories_only == ME(64) &&60 E::create_symlinks == ME(128) &&61 E::create_hard_links == ME(256),62 "Expected enumeration values do not match");63 64 return 0;65}66