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libcxx/test/std/input.output/filesystems/fs.enum/enum.perm_options.pass.cpp

49 lines
1.3 KiB
C++

//===----------------------------------------------------------------------===//
//
// 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
// <filesystem>
// enum class perm_options;
#include "filesystem_include.hpp"
#include <type_traits>
#include <cassert>
#include <sys/stat.h>
#include "test_macros.h"
#include "check_bitmask_types.hpp"
constexpr fs::perm_options ME(int val) {
return static_cast<fs::perm_options>(val);
}
int main() {
typedef fs::perm_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, ""); // Implementation detail
typedef check_bitmask_type<E, E::replace, E::nofollow> BitmaskTester;
assert(BitmaskTester::check());
static_assert(
E::replace == ME(1) &&
E::add == ME(2) &&
E::remove == ME(4) &&
E::nofollow == ME(8),
"Expected enumeration values do not match");
}