@Override
    File createTempDir() {
      try {
        return java.nio.file.Files.createTempDirectory(
                Paths.get(JAVA_IO_TMPDIR.value()), /* prefix= */ null, directoryPermissions.get())
            .toFile();
      } catch (IOException e) {
        throw new IllegalStateException("Failed to create directory", e);
      }
    }

    @Override
    File createTempFile(String prefix) throws IOException {

import org.junit.Test;

/**
 * @author koichik
 *
 */
public class FileUtilTest {

    URL url = ResourceUtil.getResource(getClass().getName().replace('.', '/') + ".txt");

    File inputFile = URLUtil.toFile(url);

    /**
     * @throws Exception
     */
    @Test
    public void testFileToFile() throws Exception {
        final byte[] bytes = readBytes(inputFile);

/**
 * @author wyukawa
 *
 */
public class PropertiesUtilTest {

    URL url = ResourceUtil.getResource(getClass().getName().replace('.', '/') + ".txt");

    File inputFile = URLUtil.toFile(url);

    /**
     *
     */
    @Rule
    public TemporaryFolder tempFolder = new TemporaryFolder();

    /**
     * @see org.junit.rules.ExpectedException
     */
    @Rule

    StringWriter writer = new StringWriter();

    StringBuilder builder = new StringBuilder();

    URL url = ResourceUtil.getResource(getClass().getName().replace('.', '/') + ".txt");

    File inputFile = URLUtil.toFile(url);

    File outputFile = new File(inputFile.getParentFile(), ".out");

    /**
     * @throws Exception
     */
    @Test
    public void testIsToOs() throws Exception {

  val directory: File
    get() = cache.directory.toFile()

  @get:JvmName("directoryPath")
  val directoryPath: Path
    get() = cache.directory

  @JvmName("-deprecated_directory")
  @Deprecated(
    message = "moved to val",
    replaceWith = ReplaceWith(expression = "directory"),
    level = DeprecationLevel.ERROR,
  )
  fun directory(): File = cache.directory.toFile()

    }
  }

  private inline fun <T> assertOnFileDescriptor(
    content: String? = null,
    fn: (FileDescriptor) -> T,
  ): T =
    assertOnPath(content) {
      FileInputStream(filePath.toFile()).use { fis ->
        fn(fis.fd)
      }
    }

  private inline fun <T> assertOnPath(
    content: String? = null,
    fn: (okio.Path) -> T,
  ): T {
    FileSystem.SYSTEM.write(filePath) {

     */
    public static File[] getPluginJarFiles(final FilenameFilter filter) {
        final File libDir = getPluginPath().toFile();
        if (!libDir.exists()) {
            return new File[0];
        }
        return libDir.listFiles(filter);
    }

    /**
     * Resolves system properties in a given string.

    private File tempDir;

    @Override
    public void setUp() throws Exception {
        super.setUp();

        // Create temp directory for testing
        tempDir = Files.createTempDirectory("thumbnail_test").toFile();
        tempDir.deleteOnExit();

        // Create a test thumbnail manager with minimal initialization
        thumbnailManager = new TestThumbnailManager();
        thumbnailManager.baseDir = tempDir;

            if (varPath != null) {
                baseDir = new File(varPath, THUMBNAILS_DIR_NAME);
            } else {
                baseDir = ResourceUtil.getThumbnailPath().toFile();
            }
        }
        if (baseDir.mkdirs()) {
            logger.info("Created: {}", baseDir.getAbsolutePath());
        }
        if (!baseDir.isDirectory()) {

        assertArgumentNotEmpty("encoding", encoding);

        final URL url = ResourceUtil.getResource(path);
        if (url.getProtocol().equals("file")) {
            return readText(URLUtil.toFile(url), encoding);
        }
        final InputStream is = URLUtil.openStream(url);
        try {
            final Reader reader = ReaderUtil.create(new BufferedInputStream(is, DEFAULT_BUF_SIZE), encoding);