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//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// REQUIRES: can-create-symlinks
// UNSUPPORTED: c++03, c++11, c++14
// <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 <type_traits>
#include <cassert>
#include "test_macros.h"
#include "filesystem_test_helper.h"
namespace fs = std::filesystem;
static void test_replace_filename_method() {
using namespace fs;
{
directory_entry e;
path replace;
static_assert(noexcept(e.replace_filename(replace)) == false,
"operation cannot be noexcept");
static_assert(
std::is_same<decltype(e.replace_filename(replace)), void>::value,
"operation must return void");
}
{
const path p("/path/to/foo.exe");
const path replace("bar.out");
const path expect("/path/to/bar.out");
directory_entry e(p);
assert(e.path() == p);
e.replace_filename(replace);
assert(e.path() == expect);
}
}
static void test_replace_filename_ec_method() {
using namespace fs;
static_test_env static_env;
{
directory_entry e;
path replace;
std::error_code ec;
static_assert(noexcept(e.replace_filename(replace, ec)) == false,
"operation cannot be noexcept");
static_assert(
std::is_same<decltype(e.replace_filename(replace, ec)), void>::value,
"operation must return void");
}
{
const path p("/path/to/foo.exe");
const path replace("bar.out");
const path expect("/path/to/bar.out");
directory_entry e(p);
assert(e.path() == p);
std::error_code ec = GetTestEC();
e.replace_filename(replace, ec);
assert(e.path() == expect);
assert(ErrorIs(ec, std::errc::no_such_file_or_directory));
}
{
const path p = static_env.EmptyFile;
const path expect = static_env.NonEmptyFile;
const path replace = static_env.NonEmptyFile.filename();
assert(expect.parent_path() == p.parent_path());
directory_entry e(p);
assert(e.path() == p);
std::error_code ec = GetTestEC();
e.replace_filename(replace, ec);
assert(e.path() == expect);
assert(!ec);
}
}
static void test_replace_filename_calls_refresh() {
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_two = env.create_file("dir/file_two", 101);
const path sym = env.create_symlink("dir/file", "sym");
const path sym_two = env.create_symlink("dir/file_two", "sym_two");
{
directory_entry ent(file);
ent.replace_filename(file_two.filename());
assert(ent.path() == file_two);
// removing the file demonstrates that the values where cached previously.
LIBCPP_ONLY(remove(file_two));
assert(ent.file_size() == 101);
}
env.create_file("dir/file_two", 99);
{
directory_entry ent(sym);
ent.replace_filename(sym_two.filename());
assert(ent.path() == sym_two);
LIBCPP_ONLY(remove(file_two));
LIBCPP_ONLY(remove(sym_two));
assert(ent.is_symlink());
assert(ent.is_regular_file());
assert(ent.file_size() == 99);
}
}
#ifndef TEST_WIN_NO_FILESYSTEM_PERMS_NONE
// Windows doesn't support setting perms::none to trigger failures
// reading directories.
static void test_replace_filename_propagates_error() {
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_two = env.create_file("dir/file_two", 99);
const path file_out_of_dir = env.create_file("file_three", 101);
const path sym_out_of_dir = env.create_symlink("dir/file", "sym");
const path sym_out_of_dir_two = env.create_symlink("dir/file", "sym_two");
const path sym_in_dir = env.create_symlink("file_two", "dir/sym_three");
const path sym_in_dir_two = env.create_symlink("file_two", "dir/sym_four");
const perms old_perms = status(dir).permissions();
{
directory_entry ent(file);
permissions(dir, perms::none);
std::error_code ec = GetTestEC();
ent.replace_filename(file_two.filename(), ec);
assert(ErrorIs(ec, std::errc::permission_denied));
}
permissions(dir, old_perms);
{
directory_entry ent(sym_in_dir);
permissions(dir, perms::none);
std::error_code ec = GetTestEC();
ent.replace_filename(sym_in_dir_two.filename(), ec);
assert(ErrorIs(ec, std::errc::permission_denied));
}
permissions(dir, old_perms);
{
directory_entry ent(sym_out_of_dir);
permissions(dir, perms::none);
std::error_code ec = GetTestEC();
ent.replace_filename(sym_out_of_dir_two.filename(), ec);
assert(!ec);
assert(ent.is_symlink());
ec = GetTestEC();
assert(!ent.exists(ec));
assert(ErrorIs(ec, std::errc::permission_denied));
}
}
#endif // TEST_WIN_NO_FILESYSTEM_PERMS_NONE
int main(int, char**) {
test_replace_filename_method();
test_replace_filename_ec_method();
test_replace_filename_calls_refresh();
#ifndef TEST_WIN_NO_FILESYSTEM_PERMS_NONE
test_replace_filename_propagates_error();
#endif
return 0;
}
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