public void testFileTraverser_multipleDirectoryLayers_breadthFirstStartsWithTopLayer()
      throws Exception {
    File fileA = newFile("file-a");
    File dir1 = newDir("dir-1");
    newFile("dir-1/file-b");
    newFile("dir-1/dir-2");

    assertThat(Iterables.limit(Files.fileTraverser().breadthFirst(rootDir), 3))
        .containsExactly(rootDir, fileA, dir1);
  }

        protected File newFile;

        protected Writer writer;

        protected CharMappingItem item;

        protected MappingUpdater(final CharMappingItem newItem) {
            try {
                newFile = ComponentUtil.getSystemHelper().createTempFile(MAPPING, ".txt");
                writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(newFile), Constants.UTF_8));

        protected File newFile;

        protected Writer writer;

        protected ProtwordsItem item;

        protected ProtwordsUpdater(final ProtwordsItem newItem) {
            try {
                newFile = ComponentUtil.getSystemHelper().createTempFile(PROTWORDS, ".txt");
                writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(newFile), Constants.UTF_8));

        protected File newFile;

        protected Writer writer;

        protected StopwordsItem item;

        protected SynonymUpdater(final StopwordsItem newItem) {
            try {
                newFile = ComponentUtil.getSystemHelper().createTempFile(STOPWORDS, ".txt");
                writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(newFile), Constants.UTF_8));

        protected File newFile;

        protected Writer writer;

        protected KuromojiItem item;

        protected KuromojiUpdater(final KuromojiItem newItem) {
            try {
                newFile = ComponentUtil.getSystemHelper().createTempFile(KUROMOJI, ".txt");
                writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(newFile), Constants.UTF_8));

            } catch (final Exception e) {
                if (newFile != null) {
                    newFile.delete();
                }
                throw new DictionaryException("Failed to write a userDict file.", e);
            }
            item = newItem;
        }

        public StemmerOverrideItem write(final StemmerOverrideItem oldItem) {
            try {

        protected File newFile;

        protected Writer writer;

        protected SynonymItem item;

        protected SynonymUpdater(final SynonymItem newItem) {
            try {
                newFile = ComponentUtil.getSystemHelper().createTempFile(SYNONYM, ".txt");
                writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(newFile), Constants.UTF_8));

    public void testStorePropertiesOutputStreamString() throws IOException {
        final Properties outProperties = new Properties();
        outProperties.setProperty("a", "A");
        final File file = tempFolder.newFile("hoge.properties");
        final FileOutputStream outputStream = OutputStreamUtil.create(file);
        PropertiesUtil.store(outProperties, outputStream, "comments");
        CloseableUtil.close(outputStream);

				Level:   ErrorKind,
				Message: msg,
				Time:    time.Now().UTC(),
				Trace:   &log.Trace{Message: msg},
			})
		}
	}

	path := filepath.Join(w.opts.Directory, w.opts.FileNameFunc())
	f, err := newFile(path)
	if err != nil {
		return fmt.Errorf("unable to create new file at %v: %w", path, err)
	}

	w.f = f

	return nil
}

	accessAttr := uint32(syscall.FILE_ATTRIBUTE_NORMAL | 0x80000000)

	fd, err := syscall.CreateFile(pathp, access, shareflag, nil, createflag, accessAttr, 0)
	if err != nil {
		return nil, err
	}

	return os.NewFile(uintptr(fd), path), nil
}

func lockFile(fd syscall.Handle, flags uint32) error {
	// https://msdn.microsoft.com/en-us/library/windows/desktop/aa365203(v=vs.85).aspx
	if fd == syscall.InvalidHandle {
		return nil