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|
//===----------------------------------------------------------------------===//
//
// 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>
// class directory_entry
// directory_entry& operator=(directory_entry const&) = default;
// directory_entry& operator=(directory_entry&&) noexcept = default;
// void assign(path const&);
// void replace_filename(path const&);
#include "filesystem_include.hpp"
#include <type_traits>
#include <cassert>
#include "test_macros.h"
#include "rapid-cxx-test.hpp"
#include "filesystem_test_helper.hpp"
TEST_SUITE(directory_entry_mods_suite)
TEST_CASE(test_refresh_method) {
using namespace fs;
{
directory_entry e;
static_assert(noexcept(e.refresh()) == false,
"operation cannot be noexcept");
static_assert(std::is_same<decltype(e.refresh()), void>::value,
"operation must return void");
}
{
directory_entry e;
e.refresh();
TEST_CHECK(!e.exists());
}
}
TEST_CASE(test_refresh_ec_method) {
using namespace fs;
{
directory_entry e;
std::error_code ec;
static_assert(noexcept(e.refresh(ec)), "operation should be noexcept");
static_assert(std::is_same<decltype(e.refresh(ec)), void>::value,
"operation must return void");
}
{
directory_entry e;
std::error_code ec = GetTestEC();
e.refresh(ec);
TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
}
}
TEST_CASE(refresh_on_file_dne) {
using namespace fs;
scoped_test_env env;
const path dir = env.create_dir("dir");
const path file = env.create_file("dir/file", 42);
const perms old_perms = status(dir).permissions();
// test file doesn't exist
{
directory_entry ent(file);
remove(file);
TEST_CHECK(ent.exists());
ent.refresh();
permissions(dir, perms::none);
TEST_CHECK(!ent.exists());
}
permissions(dir, old_perms);
env.create_file("dir/file", 101);
{
directory_entry ent(file);
remove(file);
TEST_CHECK(ent.exists());
std::error_code ec = GetTestEC();
ent.refresh(ec);
TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
permissions(dir, perms::none);
TEST_CHECK(!ent.exists());
}
}
void remove_if_exists(const fs::path& p) {
std::error_code ec;
remove(p, ec);
}
TEST_CASE(refresh_on_bad_symlink) {
using namespace fs;
scoped_test_env env;
const path dir = env.create_dir("dir");
const path file = env.create_file("dir/file", 42);
const path sym = env.create_symlink("dir/file", "sym");
const perms old_perms = status(dir).permissions();
// test file doesn't exist
{
directory_entry ent(sym);
LIBCPP_ONLY(remove(file));
TEST_CHECK(ent.is_symlink());
TEST_CHECK(ent.is_regular_file());
TEST_CHECK(ent.exists());
remove_if_exists(file);
ent.refresh();
LIBCPP_ONLY(permissions(dir, perms::none));
TEST_CHECK(ent.is_symlink());
TEST_CHECK(!ent.is_regular_file());
TEST_CHECK(!ent.exists());
}
permissions(dir, old_perms);
env.create_file("dir/file", 101);
{
directory_entry ent(sym);
LIBCPP_ONLY(remove(file));
TEST_CHECK(ent.is_symlink());
TEST_CHECK(ent.is_regular_file());
TEST_CHECK(ent.exists());
remove_if_exists(file);
std::error_code ec = GetTestEC();
ent.refresh(ec);
TEST_CHECK(!ec); // we don't report bad symlinks as an error.
LIBCPP_ONLY(permissions(dir, perms::none));
TEST_CHECK(!ent.exists());
}
}
TEST_CASE(refresh_cannot_resolve) {
using namespace fs;
scoped_test_env env;
const path dir = env.create_dir("dir");
const path file = env.create_file("dir/file", 42);
const path file_out_of_dir = env.create_file("file1", 99);
const path sym_out_of_dir = env.create_symlink("dir/file", "sym");
const path sym_in_dir = env.create_symlink("file1", "dir/sym1");
perms old_perms = status(dir).permissions();
{
directory_entry ent(file);
permissions(dir, perms::none);
TEST_CHECK(ent.is_regular_file());
std::error_code ec = GetTestEC();
ent.refresh(ec);
TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
TEST_CHECK(ent.path() == file);
ExceptionChecker Checker(file, std::errc::permission_denied,
"directory_entry::refresh");
TEST_CHECK_THROW_RESULT(filesystem_error, Checker, ent.refresh());
}
permissions(dir, old_perms);
{
directory_entry ent(sym_in_dir);
permissions(dir, perms::none);
TEST_CHECK(ent.is_symlink());
std::error_code ec = GetTestEC();
ent.refresh(ec);
TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
TEST_CHECK(ent.path() == sym_in_dir);
ExceptionChecker Checker(sym_in_dir, std::errc::permission_denied,
"directory_entry::refresh");
TEST_CHECK_THROW_RESULT(filesystem_error, Checker, ent.refresh());
}
permissions(dir, old_perms);
{
directory_entry ent(sym_out_of_dir);
permissions(dir, perms::none);
TEST_CHECK(ent.is_symlink());
// Failure to resolve the linked entity due to permissions is not
// reported as an error.
std::error_code ec = GetTestEC();
ent.refresh(ec);
TEST_CHECK(!ec);
TEST_CHECK(ent.is_symlink());
ec = GetTestEC();
TEST_CHECK(ent.exists(ec) == false);
TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
TEST_CHECK(ent.path() == sym_out_of_dir);
}
permissions(dir, old_perms);
{
directory_entry ent_file(file);
directory_entry ent_sym(sym_in_dir);
directory_entry ent_sym2(sym_out_of_dir);
permissions(dir, perms::none);
((void)ent_file);
((void)ent_sym);
TEST_CHECK_THROW(filesystem_error, ent_file.refresh());
TEST_CHECK_THROW(filesystem_error, ent_sym.refresh());
TEST_CHECK_NO_THROW(ent_sym2);
}
}
TEST_CASE(refresh_doesnt_throw_on_dne_but_reports_it) {
using namespace fs;
scoped_test_env env;
const path file = env.create_file("file1", 42);
const path sym = env.create_symlink("file1", "sym");
{
directory_entry ent(file);
TEST_CHECK(ent.file_size() == 42);
remove(file);
std::error_code ec = GetTestEC();
ent.refresh(ec);
TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
TEST_CHECK_NO_THROW(ent.refresh());
ec = GetTestEC();
TEST_CHECK(ent.file_size(ec) == uintmax_t(-1));
TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
// doesn't throw!
TEST_CHECK_THROW(filesystem_error, ent.file_size());
}
env.create_file("file1", 99);
{
directory_entry ent(sym);
TEST_CHECK(ent.is_symlink());
TEST_CHECK(ent.is_regular_file());
TEST_CHECK(ent.file_size() == 99);
remove(file);
std::error_code ec = GetTestEC();
ent.refresh(ec);
TEST_CHECK(!ec);
ec = GetTestEC();
TEST_CHECK(ent.file_size(ec) == uintmax_t(-1));
TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
TEST_CHECK_THROW(filesystem_error, ent.file_size());
}
}
TEST_CASE(access_cache_after_refresh_fails) {
using namespace fs;
scoped_test_env env;
const path dir = env.create_dir("dir");
const path file = env.create_file("dir/file", 42);
const path file_out_of_dir = env.create_file("file1", 101);
const path sym = env.create_symlink("dir/file", "sym");
const path sym_in_dir = env.create_symlink("dir/file", "dir/sym2");
const perms old_perms = status(dir).permissions();
#define CHECK_ACCESS(func, expect) \
ec = GetTestEC(); \
TEST_CHECK(ent.func(ec) == expect); \
TEST_CHECK(ErrorIs(ec, std::errc::permission_denied))
// test file doesn't exist
{
directory_entry ent(file);
TEST_CHECK(!ent.is_symlink());
TEST_CHECK(ent.is_regular_file());
TEST_CHECK(ent.exists());
permissions(dir, perms::none);
std::error_code ec = GetTestEC();
ent.refresh(ec);
TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
CHECK_ACCESS(exists, false);
CHECK_ACCESS(is_symlink, false);
CHECK_ACCESS(last_write_time, file_time_type::min());
CHECK_ACCESS(hard_link_count, uintmax_t(-1));
}
permissions(dir, old_perms);
{
directory_entry ent(sym_in_dir);
TEST_CHECK(ent.is_symlink());
TEST_CHECK(ent.is_regular_file());
TEST_CHECK(ent.exists());
permissions(dir, perms::none);
std::error_code ec = GetTestEC();
ent.refresh(ec);
TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
CHECK_ACCESS(exists, false);
CHECK_ACCESS(is_symlink, false);
CHECK_ACCESS(last_write_time, file_time_type::min());
CHECK_ACCESS(hard_link_count, uintmax_t(-1));
}
permissions(dir, old_perms);
{
directory_entry ent(sym);
TEST_CHECK(ent.is_symlink());
TEST_CHECK(ent.is_regular_file());
TEST_CHECK(ent.exists());
permissions(dir, perms::none);
std::error_code ec = GetTestEC();
ent.refresh(ec);
TEST_CHECK(!ec);
TEST_CHECK(ent.is_symlink());
CHECK_ACCESS(exists, false);
CHECK_ACCESS(is_regular_file, false);
CHECK_ACCESS(last_write_time, file_time_type::min());
CHECK_ACCESS(hard_link_count, uintmax_t(-1));
}
#undef CHECK_ACCESS
}
TEST_SUITE_END()
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