wicket-core/src/test/java/org/apache/wicket/protocol/http/ResponseIOExceptionTest.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.wicket.protocol.http;

import static org.assertj.core.api.Assertions.assertThat;

import java.net.SocketException;
import jakarta.servlet.http.HttpServletResponse;

import org.apache.wicket.protocol.http.servlet.ResponseIOException;
import org.apache.wicket.protocol.http.servlet.ServletWebRequest;
import org.apache.wicket.protocol.http.servlet.ServletWebResponse;
import org.apache.wicket.request.IRequestHandler;
import org.apache.wicket.request.Response;
import org.apache.wicket.request.cycle.IRequestCycleListener;
import org.apache.wicket.request.cycle.RequestCycle;
import org.apache.wicket.request.handler.EmptyRequestHandler;
import org.apache.wicket.request.resource.ResourceStreamResource;
import org.apache.wicket.util.resource.StringResourceStream;
import org.apache.wicket.util.tester.WicketTester;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

/**
 * @author Pedro Santos
 */
class ResponseIOExceptionTest
{
	private WicketTester tester;

	/**
	 * @throws Exception
	 */
	@BeforeEach
	void before() throws Exception
	{
		tester = new WicketTester()
		{
			@Override
			protected Response newServletWebResponse(ServletWebRequest servletWebRequest)
			{
				return new ProblematicResponse(servletWebRequest, getResponse());
			}
		};
		tester.setExposeExceptions(false);
	}

	/**
	 * @throws Exception
	 */
	@AfterEach
	void after() throws Exception
	{
		tester.destroy();
	}

	/**
	 * WICKET-3570
	 */
	@Test
	void giveUpRespondingOnIOExceptions()
	{
		TestRequestCycleListener testRequestCycleListener = new TestRequestCycleListener();
		tester.getApplication().getRequestCycleListeners().add(testRequestCycleListener);
		tester.startResource(new ResourceStreamResource(new StringResourceStream("asdf")));
		assertThat(testRequestCycleListener.lastExceptionRequestHandlerResolved).isInstanceOf(EmptyRequestHandler.class);
	}

	static class TestRequestCycleListener implements IRequestCycleListener
	{
		IRequestHandler lastExceptionRequestHandlerResolved;

		@Override
		public void onExceptionRequestHandlerResolved(RequestCycle cycle, IRequestHandler handler,
			Exception exception)
		{
			lastExceptionRequestHandlerResolved = handler;
		}

	}
	/**
	 * Mock response simulating connection lost problems.
	 */
	static class ProblematicResponse extends ServletWebResponse
	{

		/**
		 * @param webRequest
		 * @param httpServletResponse
		 */
		ProblematicResponse(ServletWebRequest webRequest,
							HttpServletResponse httpServletResponse)
		{
			super(webRequest, httpServletResponse);
		}

		@Override
		public void flush()
		{
			throw new ResponseIOException(new SocketException(
				"Connection reset by peer: socket write error"));
		}

		@Override
		public void write(byte[] array)
		{
			throw new ResponseIOException(new SocketException(
				"Connection reset by peer: socket write error"));
		}

		@Override
		public void write(byte[] array, int offset, int length)
		{
			throw new ResponseIOException(new SocketException(
				"Connection reset by peer: socket write error"));
		}

		@Override
		public void write(CharSequence sequence)
		{
			throw new ResponseIOException(new SocketException(
				"Connection reset by peer: socket write error"));
		}
	}
}