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Java example source code file (MultiModuleDispatchIntegrationTest.java)

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

Learn more about this Java project at its project page.

Java - Java tags/keywords

filterchain, filterpipeline, http, httpservletrequest, injector, ioexception, multimoduledispatchintegrationtest, override, request, response, servlet, servletexception, servletmodule, servletresponse, singleton, testcase, testfilter

The MultiModuleDispatchIntegrationTest.java Java example source code

package com.google.inject.servlet;

import static org.easymock.EasyMock.createMock;
import static org.easymock.EasyMock.expect;
import static org.easymock.EasyMock.replay;
import static org.easymock.EasyMock.verify;

import com.google.inject.Guice;
import com.google.inject.Injector;
import com.google.inject.Key;
import com.google.inject.Singleton;

import junit.framework.TestCase;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;

/**
 *
 * This tests that filter stage of the pipeline dispatches
 * correctly to guice-managed filters with multiple modules.
 *
 * WARNING(dhanji): Non-parallelizable test =(
 *
 * @author dhanji@gmail.com (Dhanji R. Prasanna)
 */
public class MultiModuleDispatchIntegrationTest extends TestCase {
    private static int inits, doFilters, destroys;

  @Override
  public final void setUp() {
    inits = 0;
    doFilters = 0;
    destroys = 0;

    GuiceFilter.reset();
  }


  public final void testDispatchRequestToManagedPipeline() throws ServletException, IOException {
    final Injector injector = Guice.createInjector(new ServletModule() {

      @Override
      protected void configureServlets() {
        filter("/*").through(TestFilter.class);

        // These filters should never fire
        filter("*.jsp").through(Key.get(TestFilter.class));
      }

    }, new ServletModule() {

      @Override
      protected void configureServlets() {
        filter("*.html").through(TestFilter.class);
        filter("/*").through(Key.get(TestFilter.class));

        // These filters should never fire
        filter("/index/*").through(Key.get(TestFilter.class));
      }

    });

    final FilterPipeline pipeline = injector.getInstance(FilterPipeline.class);
    pipeline.initPipeline(null);

    //create ourselves a mock request with test URI
    HttpServletRequest requestMock = createMock(HttpServletRequest.class);

    expect(requestMock.getRequestURI())
            .andReturn("/index.html")
            .anyTimes();
    expect(requestMock.getContextPath())
        .andReturn("")
        .anyTimes();

    //dispatch request
    replay(requestMock);
    pipeline.dispatch(requestMock, null, createMock(FilterChain.class));
    pipeline.destroyPipeline();

    verify(requestMock);

    assertTrue("lifecycle states did not"
        + " fire correct number of times-- inits: " + inits + "; dos: " + doFilters
        + "; destroys: " + destroys,
        inits == 1 && doFilters == 3 && destroys == 1);
  }

  @Singleton
  public static class TestFilter implements Filter {
    public void init(FilterConfig filterConfig) throws ServletException {
      inits++;
    }

    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse,
        FilterChain filterChain) throws IOException, ServletException {
      doFilters++;
      filterChain.doFilter(servletRequest, servletResponse);
    }

    public void destroy() {
      destroys++;
    }
  }
}

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