AbstractGuiceGrizzlyTest.java

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package com.sun.jersey.guice;

import com.google.inject.servlet.GuiceFilter;
import com.google.inject.servlet.GuiceServletContextListener;
import com.sun.grizzly.http.embed.GrizzlyWebServer;
import com.sun.grizzly.http.servlet.ServletAdapter;
import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.WebResource;
import java.io.IOException;
import java.net.URI;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.ws.rs.core.UriBuilder;
import junit.framework.TestCase;

public abstract class AbstractGuiceGrizzlyTest extends TestCase {
    private static final Logger LOGGER = Logger.getLogger(AbstractGuiceGrizzlyTest.class.getName());

    public static final String CONTEXT = "/test";

    public static int getEnvVariable(final String varName, int defaultValue) {
        if (null == varName) {
            return defaultValue;
        }
        String varValue = System.getenv(varName);
        if (null != varValue) {
            try {
                return Integer.parseInt(varValue);
            }catch (NumberFormatException e) {
                // will return default value bellow
            }
        }
        return defaultValue;
    }

    private final int port = getEnvVariable("JERSEY_HTTP_PORT", 9997);

    private final URI baseUri = getUri().build();

    private GrizzlyWebServer ws;

    private GuiceFilter f;

    public UriBuilder getUri() {
        return UriBuilder.fromUri("http://localhost").port(port).path(CONTEXT);
    }

    public <T extends GuiceServletContextListener> void startServer(Class<T> c) {
        LOGGER.info("Starting grizzly...");

        ws = new GrizzlyWebServer(port);

        ServletAdapter sa = new ServletAdapter();

        sa.addServletListener(c.getName());

        f = new GuiceFilter();
        sa.addFilter(f, "guiceFilter", null);

        sa.setContextPath(baseUri.getRawPath());

        ws.addGrizzlyAdapter(sa, new String[] {""} );

        try {
            ws.start();
        } catch (IOException ex) {
            throw new RuntimeException(ex);
        }
    }

    /**
     * Stop the embedded Grizzly server.
     * @throws java.lang.Exception
     */
    private void stopGrizzly() throws Exception {
        try {
            if (ws != null) {
                // Work around bug in Grizzly
                f.destroy();
                ws.stop();
                ws = null;
            }
        } catch( Exception e ) {
            LOGGER.log(Level.WARNING, "Could not stop grizzly...", e );
        }
    }
    
    @Override
    public void tearDown() throws Exception {
        LOGGER.info( "tearDown..." );
        stopGrizzly();
        LOGGER.info( "done..." );
    }

    public WebResource resource() {
        final Client c = Client.create();
        final WebResource rootResource = c.resource(getUri().build());
        return rootResource;
    }
}