Struts example source code file (TwoFilterIntegrationTest.java)

This example Struts source code file (TwoFilterIntegrationTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Struts tags/keywords

filter, filter, filterchain, io, ioexception, ioexception, mockfilterconfig, mockhttpservletresponse, mockhttpservletresponse, runtimeexception, servlet, servletexception, servletexception, servletresponse, strutsexecutefilter, strutspreparefilter, util

The Struts TwoFilterIntegrationTest.java source code

/*
 * $Id: DefaultActionSupport.java 651946 2008-04-27 13:41:38Z apetrelli $
 *
 * 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.struts2.dispatcher.ng;

import com.opensymphony.xwork2.ActionContext;
import junit.framework.TestCase;
import org.apache.struts2.dispatcher.Dispatcher;
import org.apache.struts2.dispatcher.ng.filter.StrutsExecuteFilter;
import org.apache.struts2.dispatcher.ng.filter.StrutsPrepareFilter;
import org.springframework.mock.web.*;

import javax.servlet.*;
import java.io.IOException;
import java.util.LinkedList;
import java.util.Arrays;

/**
 * Integration tests for the filter
 */
public class TwoFilterIntegrationTest extends TestCase {
    StrutsExecuteFilter filterExecute;
    StrutsPrepareFilter filterPrepare;
    Filter failFilter;
    private Filter stringFilter;

    public void setUp() {
        filterPrepare = new StrutsPrepareFilter();
        filterExecute = new StrutsExecuteFilter();
        failFilter = new Filter() {
            public void init(FilterConfig filterConfig) throws ServletException {}
            public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
                fail("Should never get here");
            }
            public void destroy() {}
        };
        stringFilter = new Filter() {
            public void init(FilterConfig filterConfig) throws ServletException {}
            public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
                response.getWriter().write("content");
                assertNotNull(ActionContext.getContext());
                assertNotNull(Dispatcher.getInstance());
            }
            public void destroy() {}
        };
    }

    public void test404() throws ServletException, IOException {
        MockHttpServletResponse response = run("/foo.action", filterPrepare, filterExecute, failFilter);
        assertEquals(404, response.getStatus());
    }

    public void test200() throws ServletException, IOException {
        MockHttpServletResponse response = run("/hello.action", filterPrepare, filterExecute, failFilter);
        assertEquals(200, response.getStatus());
    }

    public void testStaticFallthrough() throws ServletException, IOException {
        MockHttpServletResponse response = run("/foo.txt", filterPrepare, filterExecute, stringFilter);
        assertEquals(200, response.getStatus());
        assertEquals("content", response.getContentAsString());

    }

    public void testStaticExecute() throws ServletException, IOException {
        MockHttpServletResponse response = run("/struts/utils.js", filterPrepare, filterExecute, failFilter);
        assertEquals(200, response.getStatus());
        assertTrue(response.getContentAsString().contains("StrutsUtils"));
    }

    public void testFilterInMiddle() throws ServletException, IOException {
        Filter middle = new Filter() {
            public void init(FilterConfig filterConfig) throws ServletException {}
            public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
                assertNotNull(ActionContext.getContext());
                assertNotNull(Dispatcher.getInstance());
                assertNull(ActionContext.getContext().getActionInvocation());
                chain.doFilter(request, response);
                assertEquals("hello", ActionContext.getContext().getActionInvocation().getProxy().getActionName());
            }
            public void destroy() {}
        };
        MockHttpServletResponse response = run("/hello.action", filterPrepare, middle, filterExecute, failFilter);
        assertEquals(200, response.getStatus());
    }

    private MockHttpServletResponse run(String uri, final Filter... filters) throws ServletException, IOException {
        return run(uri, null, filters);
    }
    private MockHttpServletResponse run(String uri, ActionContext existingContext, final Filter... filters) throws ServletException, IOException {
        final LinkedList<Filter> filterList = new LinkedList(Arrays.asList(filters));
        MockHttpServletRequest request = new MockHttpServletRequest();
        MockHttpServletResponse response = new MockHttpServletResponse();
        MockFilterConfig filterConfig = new MockFilterConfig();
        MockFilterChain filterChain = new MockFilterChain() {
            @Override
            public void doFilter(ServletRequest req, ServletResponse res) {
                Filter next = (filterList.size() > 0 ? filterList.removeFirst() : null);
                if (next != null) {
                    try {
                        next.doFilter(req, res, this);
                    } catch (IOException e) {
                        throw new RuntimeException(e);
                    } catch (ServletException e) {
                        throw new RuntimeException(e);
                    }
                }
            }
        };

        if (existingContext != null) {
            request.setAttribute(PrepareOperations.CLEANUP_RECURSION_COUNTER, 1);
        }
        request.setRequestURI(uri);
        for (Filter filter : filters) {
            filter.init(filterConfig);
        }

        ActionContext.setContext(existingContext);
        filterList.removeFirst().doFilter(request, response, filterChain);
        if (existingContext == null) {
            assertNull(ActionContext.getContext());
            assertNull(Dispatcher.getInstance());
        } else {
            assertEquals(Integer.valueOf(1), request.getAttribute(PrepareOperations.CLEANUP_RECURSION_COUNTER));
        }
        return response;
    }


}