if (!parentDir.mkdir()) {
                    throw new FileAccessException("ECL0109", new Object[] { file.getAbsolutePath() });
                }
            } else if (!parentDir.isDirectory()) {
                throw new FileAccessException("ECL0110", new Object[] { file.getAbsolutePath() });
            }
            properties = new Properties();
            store();
        } else if (!this.propertiesFile.isFile()) {

                if (propFile.delete() && logger.isDebugEnabled()) {
                    logger.debug("Deleted a temp file: {}", propFile.getAbsolutePath());
                }
                systemProperties.reload(propFile.getAbsolutePath());
                propFile.deleteOnExit();
            } catch (final Exception e) {
                logger.warn("Failed to create system properties file.", e);

        file1 = File.createTempFile("synonym", ".txt");
        FileUtil.writeBytes(file1.getAbsolutePath(),
                "a1=>A1\nb1,b2 => B1\nc1 => C1, C2\nx1,X1\ny1, Y1, y2"
                        .getBytes(Constants.UTF_8));
        // TODO set up opensearch and dictionaryManager
        synonymFile = new SynonymFile("1", file1.getAbsolutePath(), new Date());
    }

    @Override
    public void tearDown() throws Exception {

    @Override
    public void setUp() throws Exception {
        super.setUp();
        propertiesFile = File.createTempFile("test", ".properties");
        FileUtil.writeBytes(propertiesFile.getAbsolutePath(), new byte[0]);
        propertiesFile.deleteOnExit();
        DynamicProperties systemProps = new DynamicProperties(propertiesFile);
        ComponentUtil.register(systemProps, "systemProperties");

    }

    private FsObj[] getFsObj() {
        return Arrays.stream(File.listRoots()).map(f -> {
            final FsObj fsObj = new FsObj();
            fsObj.path = f.getAbsolutePath();
            fsObj.free = f.getFreeSpace();
            fsObj.total = f.getTotalSpace();
            fsObj.usable = f.getUsableSpace();
            fsObj.used = fsObj.total - fsObj.usable;

        final List<String> fileNameItems = new ArrayList<>();
        final List<File> fileList = getAccessibleFileList(baseDir);
        final int length = baseDir.getAbsolutePath().length();
        for (final File file : fileList) {
            fileNameItems.add(file.getAbsolutePath().substring(length));
        }
        return fileNameItems;
    }

    // ===================================================================================

        final File targetClassesDir = new File(targetDir, "classes");
        if (targetClassesDir.isDirectory()) {
            buf.append(cpSeparator);
            buf.append(targetClassesDir.getAbsolutePath());
        }
        // WEB-INF/lib
        appendJarFile(cpSeparator, buf, new File(servletContext.getRealPath("/WEB-INF/lib")),
                "WEB-INF" + File.separator + "lib" + File.separator);

                    CopyUtil.copy(is, os);
                } catch (final Exception e) {
                    if (tempFile.exists() && !tempFile.delete()) {
                        logger.warn("Failed to delete {}.", tempFile.getAbsolutePath());
                    }
                    logger.debug("Failed to copy {}", filename, e);
                    throwValidationError(messages -> messages.addErrorsFailedToInstallPlugin(GLOBAL, filename), this::asListHtml);

            }
            return true;
        }

        final File parentFile = outputFile.getParentFile();
        if (!parentFile.exists()) {
            parentFile.mkdirs();
        }
        if (!parentFile.isDirectory()) {
            logger.warn("Not found: {}", parentFile.getAbsolutePath());
            return false;
        }

        if (baseDir.mkdirs()) {
            logger.info("Created: {}", baseDir.getAbsolutePath());
        }
        if (!baseDir.isDirectory()) {
            throw new FessSystemException("Not found: " + baseDir.getAbsolutePath());
        }

        if (logger.isDebugEnabled()) {
            logger.debug("Thumbnail Directory: {}", baseDir.getAbsolutePath());
        }