Function directory_iterator_tests

test/operations_test.cpp:439–596

  //  directory_iterator_tests  --------------------------------------------------------//

  void directory_iterator_tests()
  {
    cout << "directory_iterator_tests..." << endl;

    bool dir_itr_exception(false);
    try { fs::directory_iterator it(""); }
    catch (const fs::filesystem_error &) { dir_itr_exception = true; }
    BOOST_TEST(dir_itr_exception);

    error_code ec;

    BOOST_TEST(!ec);
    fs::directory_iterator it("", ec);
    BOOST_TEST(ec);

    dir_itr_exception = false;
    try { fs::directory_iterator it("nosuchdirectory"); }
    catch (const fs::filesystem_error &) { dir_itr_exception = true; }
    BOOST_TEST(dir_itr_exception);

    ec.clear();
    fs::directory_iterator it2("nosuchdirectory", ec);
    BOOST_TEST(ec);

    dir_itr_exception = false;
    try
    {
      error_code ec;
      fs::directory_iterator it("nosuchdirectory", ec);
      BOOST_TEST(ec);
      BOOST_TEST(ec == boost::system::errc::no_such_file_or_directory);
    }
    catch (const fs::filesystem_error &) { dir_itr_exception = true; }
    BOOST_TEST(!dir_itr_exception);
    
    // create a second directory named d2
    d2 = dir / "d2";
    fs::create_directory(d2);
    BOOST_TEST(fs::exists(d2));
    BOOST_TEST(fs::is_directory(d2));

    // test the basic operation of directory_iterators, and test that
    // stepping one iterator doesn't affect a different iterator.
    {
      typedef std::vector<fs::directory_entry> vec_type;
      vec_type vec;

      fs::directory_iterator it1(dir);
      BOOST_TEST(it1 != fs::directory_iterator());
      BOOST_TEST(fs::exists(it1->status()));
      vec.push_back(*it1);
      BOOST_TEST(*it1 == vec[0]);

      fs::directory_iterator it2(dir);
      BOOST_TEST(it2 != fs::directory_iterator());
      BOOST_TEST(*it1 == *it2);

      ++it1;