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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
// <experimental/filesystem>
// class directory_iterator
// explicit directory_iterator(const path& p);
// directory_iterator(const path& p, directory_options options);
// directory_iterator(const path& p, error_code& ec);
// directory_iterator(const path& p, directory_options options, error_code& ec);
#include <experimental/filesystem>
#include <type_traits>
#include <set>
#include <cassert>
#include "test_macros.h"
#include "rapid-cxx-test.hpp"
#include "filesystem_test_helper.hpp"
using namespace std::experimental::filesystem;
TEST_SUITE(directory_iterator_constructor_tests)
TEST_CASE(test_constructor_signatures)
{
using D = directory_iterator;
// explicit directory_iterator(path const&);
static_assert(!std::is_convertible<path, D>::value, "");
static_assert(std::is_constructible<D, path>::value, "");
static_assert(!std::is_nothrow_constructible<D, path>::value, "");
// directory_iterator(path const&, error_code&)
static_assert(std::is_constructible<D, path,
std::error_code&>::value, "");
static_assert(!std::is_nothrow_constructible<D, path,
std::error_code&>::value, "");
// directory_iterator(path const&, directory_options);
static_assert(std::is_constructible<D, path, directory_options>::value, "");
static_assert(!std::is_nothrow_constructible<D, path, directory_options>::value, "");
// directory_iterator(path const&, directory_options, error_code&)
static_assert(std::is_constructible<D, path, directory_options,
std::error_code&>::value, "");
static_assert(!std::is_nothrow_constructible<D, path, directory_options,
std::error_code&>::value, "");
}
TEST_CASE(test_construction_from_bad_path)
{
std::error_code ec;
directory_options opts = directory_options::none;
const directory_iterator endIt;
const path testPaths[] = { StaticEnv::DNE, StaticEnv::BadSymlink };
for (path const& testPath : testPaths)
{
{
directory_iterator it(testPath, ec);
TEST_CHECK(ec);
TEST_CHECK(it == endIt);
}
{
directory_iterator it(testPath, opts, ec);
TEST_CHECK(ec);
TEST_CHECK(it == endIt);
}
{
TEST_CHECK_THROW(filesystem_error, directory_iterator(testPath));
TEST_CHECK_THROW(filesystem_error, directory_iterator(testPath, opts));
}
}
}
TEST_CASE(access_denied_test_case)
{
using namespace std::experimental::filesystem;
scoped_test_env env;
path const testDir = env.make_env_path("dir1");
path const testFile = testDir / "testFile";
env.create_dir(testDir);
env.create_file(testFile, 42);
// Test that we can iterator over the directory before changing the perms
{
directory_iterator it(testDir);
TEST_REQUIRE(it != directory_iterator{});
}
// Change the permissions so we can no longer iterate
permissions(testDir, perms::none);
// Check that the construction fails when skip_permissions_denied is
// not given.
{
std::error_code ec;
directory_iterator it(testDir, ec);
TEST_REQUIRE(ec);
TEST_CHECK(it == directory_iterator{});
}
// Check that construction does not report an error when
// 'skip_permissions_denied' is given.
{
std::error_code ec;
directory_iterator it(testDir, directory_options::skip_permission_denied, ec);
TEST_REQUIRE(!ec);
TEST_CHECK(it == directory_iterator{});
}
}
TEST_CASE(access_denied_to_file_test_case)
{
using namespace std::experimental::filesystem;
scoped_test_env env;
path const testFile = env.make_env_path("file1");
env.create_file(testFile, 42);
// Change the permissions so we can no longer iterate
permissions(testFile, perms::none);
// Check that the construction fails when skip_permissions_denied is
// not given.
{
std::error_code ec;
directory_iterator it(testFile, ec);
TEST_REQUIRE(ec);
TEST_CHECK(it == directory_iterator{});
}
// Check that construction still fails when 'skip_permissions_denied' is given
// because we tried to open a file and not a directory.
{
std::error_code ec;
directory_iterator it(testFile, directory_options::skip_permission_denied, ec);
TEST_REQUIRE(ec);
TEST_CHECK(it == directory_iterator{});
}
}
TEST_CASE(test_open_on_empty_directory_equals_end)
{
scoped_test_env env;
const path testDir = env.make_env_path("dir1");
env.create_dir(testDir);
const directory_iterator endIt;
{
std::error_code ec;
directory_iterator it(testDir, ec);
TEST_CHECK(!ec);
TEST_CHECK(it == endIt);
}
{
directory_iterator it(testDir);
TEST_CHECK(it == endIt);
}
}
TEST_CASE(test_open_on_directory_succeeds)
{
const path testDir = StaticEnv::Dir;
std::set<path> dir_contents(std::begin(StaticEnv::DirIterationList),
std::end( StaticEnv::DirIterationList));
const directory_iterator endIt{};
{
std::error_code ec;
directory_iterator it(testDir, ec);
TEST_REQUIRE(!ec);
TEST_CHECK(it != endIt);
TEST_CHECK(dir_contents.count(*it));
}
{
directory_iterator it(testDir);
TEST_CHECK(it != endIt);
TEST_CHECK(dir_contents.count(*it));
}
}
TEST_CASE(test_open_on_file_fails)
{
const path testFile = StaticEnv::File;
const directory_iterator endIt{};
{
std::error_code ec;
directory_iterator it(testFile, ec);
TEST_REQUIRE(ec);
TEST_CHECK(it == endIt);
}
{
TEST_CHECK_THROW(filesystem_error, directory_iterator(testFile));
}
}
TEST_CASE(test_open_on_empty_string)
{
const path testPath = "";
const directory_iterator endIt{};
std::error_code ec;
directory_iterator it(testPath, ec);
TEST_CHECK(ec);
TEST_CHECK(it == endIt);
}
TEST_CASE(test_open_on_dot_dir)
{
const path testPath = ".";
std::error_code ec;
directory_iterator it(testPath, ec);
TEST_CHECK(!ec);
}
TEST_CASE(test_open_on_symlink)
{
const path symlinkToDir = StaticEnv::SymlinkToDir;
std::set<path> dir_contents;
for (path const& p : StaticEnv::DirIterationList) {
dir_contents.insert(p.filename());
}
const directory_iterator endIt{};
{
std::error_code ec;
directory_iterator it(symlinkToDir, ec);
TEST_REQUIRE(!ec);
TEST_CHECK(it != endIt);
path const& entry = *it;
TEST_CHECK(dir_contents.count(entry.filename()));
}
{
std::error_code ec;
directory_iterator it(symlinkToDir,
directory_options::follow_directory_symlink, ec);
TEST_REQUIRE(!ec);
TEST_CHECK(it != endIt);
path const& entry = *it;
TEST_CHECK(dir_contents.count(entry.filename()));
}
}
TEST_SUITE_END()
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