public void init() {
        // max content length
        final Long maxContentLengthParam = getInitParameter(MAX_CONTENT_LENGTH, maxContentLength, Long.class);
        if (maxContentLengthParam != null) {
            maxContentLength = maxContentLengthParam;
        }

        // access timeout
        final Integer accessTimeoutParam = getInitParameter(ACCESS_TIMEOUT_PROPERTY, accessTimeout, Integer.class);
        if (accessTimeoutParam != null) {

        connectTimeout = getInitParameter("connectTimeout", 0, Integer.class);
        dataTimeout = getInitParameter("dataTimeout", -1, Integer.class);
        controlEncoding = getInitParameter("controlEncoding", Constants.UTF_8, String.class);
        bufferSize = getInitParameter("bufferSize", 0, Integer.class);

                .build();

        final long timeToLive = getInitParameter(TIME_TO_LIVE_PROPERTY, 5L, Long.class);
        final TimeUnit timeUnit = TimeUnit.valueOf(getInitParameter(TIME_TO_LIVE_TIME_UNIT_PROPERTY, "MINUTES", String.class));
        final int maxTotal = getInitParameter(MAX_TOTAL_CONNECTION_PROPERTY, 200, Integer.class);
        final int defaultMaxPerRoute = getInitParameter(DEFAULT_MAX_CONNECTION_PER_ROUTE_PROPERTY, 20, Integer.class);

        initParams.put("jcifs.http.basicRealm", "TestRealm");

        when(filterConfig.getInitParameterNames()).thenReturn(Collections.enumeration(initParams.keySet()));
        when(filterConfig.getInitParameter(anyString())).thenAnswer(invocation -> initParams.get(invocation.getArgument(0)));

        assertDoesNotThrow(() -> filter.init(filterConfig));
    }

    @Test

        lenient().when(servletConfig.getInitParameter("jcifs.smb.client.domain")).thenReturn("TESTDOMAIN");
        lenient().when(servletConfig.getInitParameter("jcifs.http.enableBasic")).thenReturn("true");
        lenient().when(servletConfig.getInitParameter("someOtherParam")).thenReturn("value");
        lenient().when(servletConfig.getServletContext()).thenReturn(servletContext);

        servletContext = config.getServletContext();

        encoding = config.getInitParameter(LastaPrepareFilter.ENCODING_KEY);
        if (encoding == null) {
            encoding = LastaPrepareFilter.DEFAULT_ENCODING;
        }

        // ex. sjis:Shift_JIS,eucjp:EUC-JP
        final String value = config.getInitParameter(ENCODING_MAP);
        if (StringUtil.isNotBlank(value)) {

        }

        minioClient.setTimeout(getInitParameter("connectTimeout", (long) 10000, Long.class),
                getInitParameter("writeTimeout", (long) 10000, Long.class), getInitParameter("readTimeout", (long) 10000, Long.class));

        isInit = true;
    }

    /**
     * Checks if a bucket exists in the object storage.

        String name;
        while (e.hasMoreElements()) {
            name = (String) e.nextElement();
            if (name.startsWith("jcifs.smb1.")) {
                Config.setProperty(name, config.getInitParameter(name));
            }
        }
        defaultDomain = Config.getProperty("jcifs.smb1.smb.client.domain");
        domainController = Config.getProperty("jcifs.smb1.http.domainController");

        initParams.put("jcifs.http.basicRealm", "TestRealm");

        lenient().when(servletConfig.getInitParameterNames()).thenReturn(Collections.enumeration(initParams.keySet()));
        lenient().when(servletConfig.getInitParameter(anyString())).thenAnswer(invocation -> initParams.get(invocation.getArgument(0)));

        // Mock HTTP method for request - this is required for HttpServlet.service()

        }

        // smb auth
        final SmbAuthenticationHolder holder = new SmbAuthenticationHolder();
        final SmbAuthentication[] smbAuthentications =
                getInitParameter(SMB_AUTHENTICATIONS_PROPERTY, new SmbAuthentication[0], SmbAuthentication[].class);
        if (smbAuthentications != null) {
            for (final SmbAuthentication smbAuthentication : smbAuthentications) {