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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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03
// <filesystem>
// class directory_entry
// uintmax_t file_size() const;
// uintmax_t file_size(error_code const&) const noexcept;
#include "filesystem_include.hpp"
#include <type_traits>
#include <cassert>
#include "filesystem_test_helper.hpp"
#include "rapid-cxx-test.hpp"
#include <iostream>
TEST_SUITE(directory_entry_obs_testsuite)
TEST_CASE(signatures) {
using namespace fs;
{
const fs::directory_entry e = {};
std::error_code ec;
static_assert(std::is_same<decltype(e.file_size()), uintmax_t>::value, "");
static_assert(std::is_same<decltype(e.file_size(ec)), uintmax_t>::value,
"");
static_assert(noexcept(e.file_size()) == false, "");
static_assert(noexcept(e.file_size(ec)) == true, "");
}
}
TEST_CASE(basic) {
using namespace fs;
scoped_test_env env;
const path file = env.create_file("file", 42);
const path dir = env.create_dir("dir");
const path sym = env.create_symlink("file", "sym");
{
directory_entry ent(file);
uintmax_t expect = file_size(ent);
TEST_CHECK(expect == 42);
// Remove the file to show that the results were already in the cache.
LIBCPP_ONLY(remove(file));
std::error_code ec = GetTestEC();
TEST_CHECK(ent.file_size(ec) == expect);
TEST_CHECK(!ec);
}
env.create_file("file", 99);
{
directory_entry ent(sym);
uintmax_t expect = file_size(ent);
TEST_CHECK(expect == 99);
LIBCPP_ONLY(remove(ent));
std::error_code ec = GetTestEC();
TEST_CHECK(ent.file_size(ec) == 99);
TEST_CHECK(!ec);
}
}
TEST_CASE(not_regular_file) {
using namespace fs;
scoped_test_env env;
struct {
const path p;
std::errc expected_err;
} TestCases[] = {
{env.create_dir("dir"), std::errc::is_a_directory},
{env.create_fifo("fifo"), std::errc::not_supported},
{env.create_symlink("dir", "sym"), std::errc::is_a_directory}};
for (auto const& TC : TestCases) {
const path& p = TC.p;
directory_entry ent(p);
TEST_CHECK(ent.path() == p);
std::error_code ec = GetTestEC(0);
std::error_code other_ec = GetTestEC(1);
uintmax_t expect = file_size(p, other_ec);
uintmax_t got = ent.file_size(ec);
TEST_CHECK(got == expect);
TEST_CHECK(got == uintmax_t(-1));
TEST_CHECK(ec == other_ec);
TEST_CHECK(ErrorIs(ec, TC.expected_err));
ExceptionChecker Checker(p, TC.expected_err, "directory_entry::file_size");
TEST_CHECK_THROW_RESULT(filesystem_error, Checker, ent.file_size());
}
}
TEST_CASE(error_reporting) {
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("file2", 101);
const path sym_out_of_dir = env.create_symlink("dir/file", "sym");
const path sym_in_dir = env.create_symlink("file2", "dir/sym2");
const perms old_perms = status(dir).permissions();
// test a file which doesn't exist
{
directory_entry ent;
std::error_code ec = GetTestEC();
ent.assign(StaticEnv::DNE, ec);
TEST_REQUIRE(ent.path() == StaticEnv::DNE);
TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
ec = GetTestEC();
TEST_CHECK(ent.file_size(ec) == uintmax_t(-1));
TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
ExceptionChecker Checker(StaticEnv::DNE,
std::errc::no_such_file_or_directory,
"directory_entry::file_size");
TEST_CHECK_THROW_RESULT(filesystem_error, Checker, ent.file_size());
}
// test a dead symlink
{
directory_entry ent;
std::error_code ec = GetTestEC();
uintmax_t expect_bad = file_size(StaticEnv::BadSymlink, ec);
TEST_CHECK(expect_bad == uintmax_t(-1));
TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
ec = GetTestEC();
ent.assign(StaticEnv::BadSymlink, ec);
TEST_REQUIRE(ent.path() == StaticEnv::BadSymlink);
TEST_CHECK(!ec);
ec = GetTestEC();
TEST_CHECK(ent.file_size(ec) == expect_bad);
TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
ExceptionChecker Checker(StaticEnv::BadSymlink,
std::errc::no_such_file_or_directory,
"directory_entry::file_size");
TEST_CHECK_THROW_RESULT(filesystem_error, Checker, ent.file_size());
}
// test a file w/o appropriate permissions.
{
directory_entry ent;
uintmax_t expect_good = file_size(file);
permissions(dir, perms::none);
std::error_code ec = GetTestEC();
ent.assign(file, ec);
TEST_REQUIRE(ent.path() == file);
TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
ec = GetTestEC();
TEST_CHECK(ent.file_size(ec) == uintmax_t(-1));
TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
ExceptionChecker Checker(file, std::errc::permission_denied, "file_size");
TEST_CHECK_THROW_RESULT(filesystem_error, Checker, ent.file_size());
permissions(dir, old_perms);
ec = GetTestEC();
TEST_CHECK(ent.file_size(ec) == expect_good);
TEST_CHECK(!ec);
TEST_CHECK_NO_THROW(ent.file_size());
}
permissions(dir, old_perms);
// test a symlink w/o appropriate permissions.
{
directory_entry ent;
uintmax_t expect_good = file_size(sym_in_dir);
permissions(dir, perms::none);
std::error_code ec = GetTestEC();
ent.assign(sym_in_dir, ec);
TEST_REQUIRE(ent.path() == sym_in_dir);
TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
ec = GetTestEC();
TEST_CHECK(ent.file_size(ec) == uintmax_t(-1));
TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
ExceptionChecker Checker(sym_in_dir, std::errc::permission_denied,
"file_size");
TEST_CHECK_THROW_RESULT(filesystem_error, Checker, ent.file_size());
permissions(dir, old_perms);
ec = GetTestEC();
TEST_CHECK(ent.file_size(ec) == expect_good);
TEST_CHECK(!ec);
TEST_CHECK_NO_THROW(ent.file_size());
}
permissions(dir, old_perms);
// test a symlink to a file w/o appropriate permissions
{
directory_entry ent;
uintmax_t expect_good = file_size(sym_out_of_dir);
permissions(dir, perms::none);
std::error_code ec = GetTestEC();
ent.assign(sym_out_of_dir, ec);
TEST_REQUIRE(ent.path() == sym_out_of_dir);
TEST_CHECK(!ec);
ec = GetTestEC();
TEST_CHECK(ent.file_size(ec) == uintmax_t(-1));
TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
ExceptionChecker Checker(sym_out_of_dir, std::errc::permission_denied,
"file_size");
TEST_CHECK_THROW_RESULT(filesystem_error, Checker, ent.file_size());
permissions(dir, old_perms);
ec = GetTestEC();
TEST_CHECK(ent.file_size(ec) == expect_good);
TEST_CHECK(!ec);
TEST_CHECK_NO_THROW(ent.file_size());
}
}
TEST_SUITE_END()
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