EtmMonitorContextListenerTest.java

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 *
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 * Redistribution and use in source and binary forms, with or without modification,
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package etm.contrib.integration.web;

import etm.contrib.integration.web.EtmMonitorContextListener;
import etm.core.configuration.EtmManager;
import junit.framework.TestCase;

import javax.servlet.ServletContext;
import javax.servlet.ServletContextEvent;
import java.io.File;
import java.io.FileOutputStream;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.HashMap;
import java.util.Map;

/**
 *
 * Tests for Servlet Context listeners using static Etm Configuration.
 *
 * @author void.fm
 * @version $Revision$
 */
public class EtmMonitorContextListenerTest extends TestCase {

  public void testClassPath() throws Exception {
    EtmManager.reset();
    EtmMonitorContextListener listener = new EtmMonitorContextListener();

    HashMap attributes = new HashMap();
    attributes.put("jetm.config.filename", "etm/contrib/integration/web/classpath-config.xml");
    ServletContext ctx = getServletContext(attributes);

    assertTrue(Proxy.isProxyClass(EtmManager.getEtmMonitor().getClass()));
    listener.contextInitialized(new ServletContextEvent(ctx));

    assertFalse(Proxy.isProxyClass(EtmManager.getEtmMonitor().getClass()));
    assertTrue(EtmManager.getEtmMonitor().isStarted());

    listener.contextDestroyed(new ServletContextEvent(ctx));
    assertFalse(EtmManager.getEtmMonitor().isStarted());
  }

  public void testFilePath() throws Exception {
    File file = new File(System.getProperty("java.io.tmpdir"), "jetm-config.xml");
    try {
      FileOutputStream out = new FileOutputStream(file);
      out.write(("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" +
        "<!DOCTYPE jetm-config PUBLIC \"-// void.fm //DTD JETM Config 1.0//EN\" \"http://jetm.void.fm/dtd/jetm_config_1_0.dtd\">\n" +
        "<jetm-config>\n" +
        "\n" +
        "</jetm-config>").getBytes());
      EtmManager.reset();
      EtmMonitorContextListener listener = new EtmMonitorContextListener();

      HashMap attributes = new HashMap();
      attributes.put("jetm.config.filepath", file.getParentFile().getAbsolutePath());
      ServletContext ctx = getServletContext(attributes);

      assertTrue(Proxy.isProxyClass(EtmManager.getEtmMonitor().getClass()));
      listener.contextInitialized(new ServletContextEvent(ctx));

      assertFalse(Proxy.isProxyClass(EtmManager.getEtmMonitor().getClass()));
      assertTrue(EtmManager.getEtmMonitor().isStarted());

      listener.contextDestroyed(new ServletContextEvent(ctx));
      assertFalse(EtmManager.getEtmMonitor().isStarted());
    } finally {
      if (file.exists()){
        file.delete();
      }
    }
  }

   public void testSystemPropertyPath() throws Exception {
    File file = new File(System.getProperty("java.io.tmpdir"), "jetm-config.xml");
    try {
      FileOutputStream out = new FileOutputStream(file);
      out.write(("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" +
        "<!DOCTYPE jetm-config PUBLIC \"-// void.fm //DTD JETM Config 1.0//EN\" \"http://jetm.void.fm/dtd/jetm_config_1_0.dtd\">\n" +
        "<jetm-config>\n" +
        "\n" +
        "</jetm-config>").getBytes());
      EtmManager.reset();
      EtmMonitorContextListener listener = new EtmMonitorContextListener();

      HashMap attributes = new HashMap();
      attributes.put("jetm.config.filepath", "${myapp.jetm.config}");

      System.setProperty("myapp.jetm.config", file.getParentFile().getAbsolutePath());

      ServletContext ctx = getServletContext(attributes);

      assertTrue(Proxy.isProxyClass(EtmManager.getEtmMonitor().getClass()));
      listener.contextInitialized(new ServletContextEvent(ctx));

      assertFalse(Proxy.isProxyClass(EtmManager.getEtmMonitor().getClass()));
      assertTrue(EtmManager.getEtmMonitor().isStarted());

      listener.contextDestroyed(new ServletContextEvent(ctx));
      assertFalse(EtmManager.getEtmMonitor().isStarted());
    } finally {
      if (file.exists()){
        file.delete();
      }
    }
  }


  private ServletContext getServletContext(final Map contextAttributes) throws Exception {
    InvocationHandler handler = new InvocationHandler() {

      public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
        if (method.getName().equals("toString")) {
          return ServletContext.class.getName();
        } else {
          return contextAttributes.get(args[0]);
        }
      }
    };

    return (ServletContext) Proxy.newProxyInstance(
      getClass().getClassLoader(),
      new Class[]{ServletContext.class},
      handler);
  }

}