return File.createTempFile(
          /* prefix= */ prefix,
          /* suffix= */ null,
          /* directory= */ null /* defaults to java.io.tmpdir */);
    }

    /** Maximum loop count when creating temp directories. */
    private static final int TEMP_DIR_ATTEMPTS = 10000;
  }

  private static final class ThrowingCreator extends TempFileCreator {
    private static final String MESSAGE =

                final File propFile = ComponentUtil.getSystemHelper().createTempFile("thumbnail_", ".properties");
                if (propFile.delete() && logger.isDebugEnabled()) {
                    logger.debug("Deleted a temp file: {}", propFile.getAbsolutePath());
                }
                systemProperties.reload(propFile.getAbsolutePath());
                propFile.deleteOnExit();
            } catch (final Exception e) {

    private MockPopularWordHelper mockPopularWordHelper;
    private File tempDir;

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

        // Create temp directory for testing first
        tempDir = File.createTempFile("suggestjob_test", "");
        tempDir.delete();
        tempDir.mkdirs();
        tempDir.deleteOnExit();

        // Create mock objects

labels.wizard_button_finish=Pular
labels.search_list_configuration=Pesquisa
labels.search_list_button_delete=Excluir
labels.search_list_delete_confirmation=Tem certeza de que deseja excluí-lo?
labels.search_list_button_delete_all=Excluir tudo com esta consulta
labels.search_list_delete_all_confirmation=Tem certeza de que deseja excluir tudo com esta consulta?
labels.search_list_button_cancel=Cancelar
labels.failure_url_configuration=URL de falha

                final File propFile = ComponentUtil.getSystemHelper().createTempFile("suggest_", ".properties");
                if (propFile.delete() && logger.isDebugEnabled()) {
                    logger.debug("Deleted a temp file: {}", propFile.getAbsolutePath());
                }
                systemProperties.reload(propFile.getAbsolutePath());
                propFile.deleteOnExit();
            } catch (final Exception e) {

    protected void deleteTempDir(final File ownTmpDir) {
        if (ownTmpDir == null) {
            return;
        }
        if (!FileUtils.deleteQuietly(ownTmpDir)) {
            logger.warn("Could not delete a temp dir: {}", ownTmpDir.getAbsolutePath());
        }
    }

    /**
     * Appends JAR files from the specified directory to the classpath buffer.
     *
     * @param cpSeparator the classpath separator to use

    private ThumbnailManager thumbnailManager;
    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

 - [Salesforce](https://github.com/codelibs/fess-ds-salesforce)
 - [SharePoint](https://github.com/codelibs/fess-ds-sharepoint)
 - [Slack](https://github.com/codelibs/fess-ds-slack)

## Tema

 - [Simple](https://github.com/codelibs/fess-theme-simple)
 - [Classic](https://github.com/codelibs/fess-theme-classic)

## Ingesta

 - [Logger](https://github.com/codelibs/fess-ingest-logger)

            CopyUtil.copy(in, out);
            asyncImport(fileName, tempFile);
        } catch (final IOException e) {
            logger.warn("Failed to create a temp file.", e);
            if (tempFile.exists() && !tempFile.delete()) {
                logger.warn("Failed to delete {}.", tempFile.getAbsolutePath());
            }

    }

    public void test_getInputsValue_withNullInputs() {
        // Create item and then set inputs to null via reflection or subclass
        CharMappingItem item = new CharMappingItem(1L, new String[] { "temp" }, "output") {
            @Override
            public String getInputsValue() {
                // Simulate null inputs scenario
                if (getInputs() == null) {