// Create a ServletException without a message
        ServletException servletException = new ServletException();

        // Wrap it in ServletRuntimeException
        ServletRuntimeException runtimeException = new ServletRuntimeException(servletException);

        // Verify that the cause is correctly set
        assertNotNull(runtimeException);
        assertEquals(servletException, runtimeException.getCause());

    }

    /**
     * Initializes the web API filter.
     *
     * @param filterConfig The filter configuration
     * @throws ServletException If initialization fails
     */
    @Override
    public void init(final FilterConfig filterConfig) throws ServletException {
        // nothing
    }

    /**
     * Destroys the web API filter and cleans up resources.
     */
    @Override

import org.codelibs.fess.util.ComponentUtil;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestInfo;

import jakarta.servlet.FilterChain;
import jakarta.servlet.ServletException;
import jakarta.servlet.ServletRequest;
import jakarta.servlet.ServletResponse;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

import org.codelibs.fess.util.ComponentUtil;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestInfo;

import jakarta.servlet.FilterChain;
import jakarta.servlet.ServletException;
import jakarta.servlet.ServletRequest;
import jakarta.servlet.ServletResponse;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

        try {
            manager.process(request, response, chain);
            fail("Expected ServletException");
        } catch (ServletException e) {
            assertEquals("Test error", e.getMessage());
        }
    }

    @Test
    public void test_process_withNullParameters() throws IOException, ServletException {
        // Test null parameter handling

        public boolean authenticate(HttpServletResponse response) throws IOException, ServletException {
            return false;
        }

        @Override
        public void login(String username, String password) throws ServletException {
        }

        @Override
        public void logout() throws ServletException {
        }

        @Override

        // Execute and expect ServletException
        try {
            webApiFilter.doFilter(request, response, chain);
            fail("Expected ServletException");
        } catch (IOException e) {
            fail("Unexpected IOException: " + e.getMessage());
        } catch (ServletException e) {
            assertEquals("Test ServletException", e.getMessage());
        }
    }

 */
package org.codelibs.fess.exception;

import jakarta.servlet.ServletException;

/**
 * Runtime exception wrapper for ServletException.
 *
 * This exception is used to wrap checked ServletExceptions and convert them
 * into unchecked RuntimeExceptions, allowing them to be thrown from methods
 * that don't declare ServletException in their throws clause.
 */
public class ServletRuntimeException extends RuntimeException {

        networkExplorer = new NetworkExplorer() {
            @Override
            public void init(ServletConfig config) throws ServletException {
                try {
                    setFieldsViaReflection(this, false, "jCIFS");
                } catch (Exception e) {
                    throw new ServletException(e);
                }
            }

            @Override

                    throws IOException, ServletException {
                if (skipAuthentication) {
                    return null;
                }
                return super.negotiate(req, resp, skipAuthentication);
            }

            @Override
            public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {