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             <div class='page-header'>

               <h1>Functional testing with OpenEJB, Jetty and Selenium</h1>
             </div>
           </div>
         </div>
         <div class="row">

             <div class="col-md-12">
                 <div id="preamble">
 <div class="sectionbody">
 <div class="paragraph">
 <p>Obviously, OpenEJB is
 great for unit testing EJBs, but I wondered whether I might also be able
 to use this embedded functionality to functionally test my application.
 You can use tools like Selenium, or HtmlUnit to run functional tests as
 if the user were sat at their browser typing text, and clicking links
 and buttons. This however means you have to have your app running on
 your app server, and you need to have consistent test data - otherwise a
 test might pass on one developers machine, but fail on another. Here&#8217;s
 one approach that you could take to completely deploy your webapp within
 a test, and functionally test it with a tool like Selenium. There&#8217;s also
 some sample code demonstrating this, available
 <a href="http://people.apache.org/~jgallimore/PersonApp.zip">here</a> .</p>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_creating_an_embedded_server">Creating an embedded server</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>I created a class to start my embedded OpenEJB and Jetty instances and
 configure them to see the EJB and WAR modules of my application:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre class="highlight"><code class="language-java" data-lang="java">public class EmbeddedServer {
     private static EmbeddedServer instance = new EmbeddedServer();
     private Server server;

     private EmbeddedServer() {
         try {
             // initialize OpenEJB &amp; add some test data
             Properties properties = new Properties();
             properties.put(Context.INITIAL_CONTEXT_FACTORY, "org.apache.openejb.client.LocalInitialContextFactory");
             InitialContext ic = new InitialContext(properties);
             PeopleFacade facade = (PeopleFacade) ic.lookup("PeopleFacadeEJBRemote");
             new TestFixture(facade).addTestData();

             // setup web app
             WebAppContext context = new WebAppContext();
             context.setWar(computeWarPath());
             InitialContext initialContext = setupJndi(context);

             // start the server
             context.setServletHandler(new EmbeddedServerServletHandler(initialContext));
             context.setContextPath("/");
             server = new Server(9091);
             server.addHandler(context);

             server.start();
         } catch (Exception e) {
             e.printStackTrace();
         }
     }

     private InitialContext setupJndi(WebAppContext context) throws NamingException {
         // setup local JNDI
         InitialContext initialContext = new InitialContext();
         WebApp webApp = getWebApp(context);
         Collection&lt;EjbRef&gt; refs = webApp.getEjbRef();
         for (EjbRef ref : refs) {
             String ejbLink = ref.getEjbLink();

             // get enterprise bean info
             EnterpriseBeanInfo beanInfo = new EJBHelper().getEJBInfo(ejbLink);
             if (beanInfo.jndiNames != null &amp;&amp; beanInfo.jndiNames.size() &gt; 0) {
             String jndiName = "java:openejb/ejb/" + beanInfo.jndiNames.get(0);
             initialContext.bind("java:comp/env/" + ref.getEjbRefName(), new LinkRef(jndiName));
             }
         }
         return initialContext;
     }

     private String computeWarPath() {
         String currentPath = new File(".").getAbsolutePath();
         String warPath;

             String[]  pathParts = currentPath.split("(\\\\|/)+");

         int webPart = Arrays.asList(pathParts).indexOf("PersonWEB");
         if (webPart == -1) {
             warPath = "PersonWEB/src/main/webapp";
         } else {
             StringBuffer buffer = new StringBuffer();

             for (int i = 0; i &lt; webPart; i++) {
                     buffer.append(pathParts[i]);
             buffer.append(File.separator);
             }

             buffer.append("PersonWEB/src/main/webapp");
             warPath = buffer.toString();
         }
         return warPath;
     }

     public static EmbeddedServer getInstance() {
         return instance;
     }

     public Server getServer() {
         return server;
     }

     public static void main(String[]  args) {
         try {
             EmbeddedServer.getInstance().getServer().join();
         } catch (Exception e) {
             e.printStackTrace();
         }
     }

     private WebApp getWebApp(WebAppContext context) {
         WebApp webApp = null;

         try {
             FileInputStream is = new FileInputStream(new File(context.getWar() + "/WEB-INF/web.xml").getAbsolutePath());
             webApp = (WebApp) JaxbJavaee.unmarshal(WebApp.class, is);
         } catch (Exception e) {
             e.printStackTrace();
         }
         return webApp;
     }
 }</code></pre>
 </div>
 </div>
 <div class="paragraph">
 <p>This class sets up an embedded instance of Jetty, running on port 9091.
 You&#8217;ll notice the setupJndi() method. This looks through the ejb-ref
 entries in web.xml (which we deserialize using the openejb-jee library),
 and adds relevant LinkRefs to the JNDI tree, so you can lookup beans
 using the java:comp/env/bean format. I&#8217;ve added a main() method here for
 convenience, so you can run this straight from an IDE, and record tests
 using tools like the Selenium Firefox plugin.</p>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_supporting_ejb_dependency_injection">Supporting @EJB Dependency injection</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>In the last code sample, we also set up a custom ServletHandler in Jetty
 - this is to perform dependency injection. The custom ServletHandler
 looks like this:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre class="highlight"><code class="language-java" data-lang="java">public class EmbeddedServerServletHandler extends ServletHandler {
     private InitialContext initialContext;

     public EmbeddedServerServletHandler(InitialContext initialContext) {
         this.initialContext = initialContext;
     }

     public Servlet customizeServlet(Servlet servlet) throws Exception {
         Class&lt;? extends Servlet&gt; servletClass = servlet.getClass();
         Field[] declaredFields = servletClass.getDeclaredFields();

         for (Field declaredField : declaredFields) {
             Annotation[] annotations = declaredField.getAnnotations();

             for (Annotation annotation : annotations) {
                 if (EJB.class.equals(annotation.annotationType())) {
                     // inject into this field
                     Class&lt;?&gt; fieldType = declaredField.getType();
                     EnterpriseBeanInfo beanInfo = getBeanFor(fieldType);
                     if (beanInfo == null) {
                     continue;
                     }

                     String jndiName = "java:openejb/ejb/" + beanInfo.jndiNames.get(0);
                     Object o = initialContext.lookup(jndiName);

                     declaredField.setAccessible(true);
                     declaredField.set(servlet, o);
                 }
             }
         }

         return super.customizeServlet(servlet);
     }

     private EnterpriseBeanInfo getBeanFor(Class&lt;?&gt; fieldType) {
         return new EJBHelper().getBeanInfo(fieldType);
     }
 }</code></pre>
 </div>
 </div>
 <div class="paragraph">
 <p>This looks up deployed beans that match the field type, and uses
 reflection to set the field.</p>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_writing_a_functional_test">Writing a Functional test</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>We can now write a functional test. I use a base abstract class to make
 sure the Embedded server is running, and start Selenium:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre class="highlight"><code class="language-java" data-lang="java">public abstract class FunctionalTestCase extends TestCase {
     protected DefaultSelenium selenium;

     protected void setUp() throws Exception {
         super.setUp();
         EmbeddedServer.getInstance();
         selenium = new DefaultSelenium("localhost", 4444, "*iexplore", "http://localhost:9091/");
         selenium.start();
     }

     protected void tearDown() throws Exception {
         selenium.stop();
     }
 }</code></pre>
 </div>
 </div>
 <div class="paragraph">
 <p>and I can then I write a test like this:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre class="highlight"><code class="language-java" data-lang="java">public class AddPersonTest extends FunctionalTestCase {
     public void testShouldAddAPerson() throws Exception {
         selenium.open("/People");
         selenium.type("firstname", "Jonathan");
         selenium.type("lastname", "Gallimore");
         selenium.click("//input[@name='add' and @value='Add']");
         selenium.waitForPageToLoad("30000");
         selenium.type("filter", "gallimore");
         selenium.click("submit");
         selenium.waitForPageToLoad("30000");
         assertEquals(1, selenium.getXpathCount("//div[@id='people']/ul/li").intValue());
         assertEquals("Jonathan Gallimore", selenium.getText("//div[@id='people']/ul/li[1]"));
     }
 }</code></pre>
 </div>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_sample_code">Sample code</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>I&#8217;ve made a sample project which demonstrates this, source is available
 <a href="http://people.apache.org/~jgallimore/PersonApp.zip">here</a> . You&#8217;ll need
 Maven to build it, and you can build it and run the tests by running
 'mvn clean install'. If want to run the tests from your IDE, you&#8217;ll need
 to have a Selenium server running, which you can do by running 'mvn
 selenium:start-server'.</p>
 </div>
 </div>
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	<div id="main-block" class="container main-block">
	<div class="row title">
	<div class="col-md-12">
	<div class='page-header'>

	<h1>Functional testing with OpenEJB, Jetty and Selenium</h1>
	</div>
	</div>
	</div>
	<div class="row">

	<div class="col-md-12">
	<div id="preamble">
	<div class="sectionbody">
	<div class="paragraph">
	<p>Obviously, OpenEJB is
	great for unit testing EJBs, but I wondered whether I might also be able
	to use this embedded functionality to functionally test my application.
	You can use tools like Selenium, or HtmlUnit to run functional tests as
	if the user were sat at their browser typing text, and clicking links
	and buttons. This however means you have to have your app running on
	your app server, and you need to have consistent test data - otherwise a
	test might pass on one developers machine, but fail on another. Here’s
	one approach that you could take to completely deploy your webapp within
	a test, and functionally test it with a tool like Selenium. There’s also
	some sample code demonstrating this, available
	<a href="http://people.apache.org/~jgallimore/PersonApp.zip">here</a> .</p>
	</div>
	</div>
	</div>
	<div class="sect1">
	<h2 id="_creating_an_embedded_server">Creating an embedded server</h2>
	<div class="sectionbody">
	<div class="paragraph">
	<p>I created a class to start my embedded OpenEJB and Jetty instances and
	configure them to see the EJB and WAR modules of my application:</p>
	</div>
	<div class="listingblock">
	<div class="content">
	<pre class="highlight"><code class="language-java" data-lang="java">public class EmbeddedServer {
	private static EmbeddedServer instance = new EmbeddedServer();
	private Server server;

	private EmbeddedServer() {
	try {
	// initialize OpenEJB & add some test data
	Properties properties = new Properties();
	properties.put(Context.INITIAL_CONTEXT_FACTORY, "org.apache.openejb.client.LocalInitialContextFactory");
	InitialContext ic = new InitialContext(properties);
	PeopleFacade facade = (PeopleFacade) ic.lookup("PeopleFacadeEJBRemote");
	new TestFixture(facade).addTestData();

	// setup web app
	WebAppContext context = new WebAppContext();
	context.setWar(computeWarPath());
	InitialContext initialContext = setupJndi(context);

	// start the server
	context.setServletHandler(new EmbeddedServerServletHandler(initialContext));
	context.setContextPath("/");
	server = new Server(9091);
	server.addHandler(context);

	server.start();
	} catch (Exception e) {
	e.printStackTrace();
	}
	}

	private InitialContext setupJndi(WebAppContext context) throws NamingException {
	// setup local JNDI
	InitialContext initialContext = new InitialContext();
	WebApp webApp = getWebApp(context);
	Collection<EjbRef> refs = webApp.getEjbRef();
	for (EjbRef ref : refs) {
	String ejbLink = ref.getEjbLink();

	// get enterprise bean info
	EnterpriseBeanInfo beanInfo = new EJBHelper().getEJBInfo(ejbLink);
	if (beanInfo.jndiNames != null && beanInfo.jndiNames.size() > 0) {
	String jndiName = "java:openejb/ejb/" + beanInfo.jndiNames.get(0);
	initialContext.bind("java:comp/env/" + ref.getEjbRefName(), new LinkRef(jndiName));
	}
	}
	return initialContext;
	}

	private String computeWarPath() {
	String currentPath = new File(".").getAbsolutePath();
	String warPath;

	String[] pathParts = currentPath.split("(\\\\\|/)+");

	int webPart = Arrays.asList(pathParts).indexOf("PersonWEB");
	if (webPart == -1) {
	warPath = "PersonWEB/src/main/webapp";
	} else {
	StringBuffer buffer = new StringBuffer();

	for (int i = 0; i < webPart; i++) {
	buffer.append(pathParts[i]);
	buffer.append(File.separator);
	}

	buffer.append("PersonWEB/src/main/webapp");
	warPath = buffer.toString();
	}
	return warPath;
	}

	public static EmbeddedServer getInstance() {
	return instance;
	}

	public Server getServer() {
	return server;
	}

	public static void main(String[] args) {
	try {
	EmbeddedServer.getInstance().getServer().join();
	} catch (Exception e) {
	e.printStackTrace();
	}
	}

	private WebApp getWebApp(WebAppContext context) {
	WebApp webApp = null;

	try {
	FileInputStream is = new FileInputStream(new File(context.getWar() + "/WEB-INF/web.xml").getAbsolutePath());
	webApp = (WebApp) JaxbJavaee.unmarshal(WebApp.class, is);
	} catch (Exception e) {
	e.printStackTrace();
	}
	return webApp;
	}
	}</code></pre>
	</div>
	</div>
	<div class="paragraph">
	<p>This class sets up an embedded instance of Jetty, running on port 9091.
	You’ll notice the setupJndi() method. This looks through the ejb-ref
	entries in web.xml (which we deserialize using the openejb-jee library),
	and adds relevant LinkRefs to the JNDI tree, so you can lookup beans
	using the java:comp/env/bean format. I’ve added a main() method here for
	convenience, so you can run this straight from an IDE, and record tests
	using tools like the Selenium Firefox plugin.</p>
	</div>
	</div>
	</div>
	<div class="sect1">
	<h2 id="_supporting_ejb_dependency_injection">Supporting @EJB Dependency injection</h2>
	<div class="sectionbody">
	<div class="paragraph">
	<p>In the last code sample, we also set up a custom ServletHandler in Jetty
	- this is to perform dependency injection. The custom ServletHandler
	looks like this:</p>
	</div>
	<div class="listingblock">
	<div class="content">
	<pre class="highlight"><code class="language-java" data-lang="java">public class EmbeddedServerServletHandler extends ServletHandler {
	private InitialContext initialContext;

	public EmbeddedServerServletHandler(InitialContext initialContext) {
	this.initialContext = initialContext;
	}

	public Servlet customizeServlet(Servlet servlet) throws Exception {
	Class<? extends Servlet> servletClass = servlet.getClass();
	Field[] declaredFields = servletClass.getDeclaredFields();

	for (Field declaredField : declaredFields) {
	Annotation[] annotations = declaredField.getAnnotations();

	for (Annotation annotation : annotations) {
	if (EJB.class.equals(annotation.annotationType())) {
	// inject into this field
	Class<?> fieldType = declaredField.getType();
	EnterpriseBeanInfo beanInfo = getBeanFor(fieldType);
	if (beanInfo == null) {
	continue;
	}

	String jndiName = "java:openejb/ejb/" + beanInfo.jndiNames.get(0);
	Object o = initialContext.lookup(jndiName);

	declaredField.setAccessible(true);
	declaredField.set(servlet, o);
	}
	}
	}

	return super.customizeServlet(servlet);
	}

	private EnterpriseBeanInfo getBeanFor(Class<?> fieldType) {
	return new EJBHelper().getBeanInfo(fieldType);
	}
	}</code></pre>
	</div>
	</div>
	<div class="paragraph">
	<p>This looks up deployed beans that match the field type, and uses
	reflection to set the field.</p>
	</div>
	</div>
	</div>
	<div class="sect1">
	<h2 id="_writing_a_functional_test">Writing a Functional test</h2>
	<div class="sectionbody">
	<div class="paragraph">
	<p>We can now write a functional test. I use a base abstract class to make
	sure the Embedded server is running, and start Selenium:</p>
	</div>
	<div class="listingblock">
	<div class="content">
	<pre class="highlight"><code class="language-java" data-lang="java">public abstract class FunctionalTestCase extends TestCase {
	protected DefaultSelenium selenium;

	protected void setUp() throws Exception {
	super.setUp();
	EmbeddedServer.getInstance();
	selenium = new DefaultSelenium("localhost", 4444, "*iexplore", "http://localhost:9091/");
	selenium.start();
	}

	protected void tearDown() throws Exception {
	selenium.stop();
	}
	}</code></pre>
	</div>
	</div>
	<div class="paragraph">
	<p>and I can then I write a test like this:</p>
	</div>
	<div class="listingblock">
	<div class="content">
	<pre class="highlight"><code class="language-java" data-lang="java">public class AddPersonTest extends FunctionalTestCase {
	public void testShouldAddAPerson() throws Exception {
	selenium.open("/People");
	selenium.type("firstname", "Jonathan");
	selenium.type("lastname", "Gallimore");
	selenium.click("//input[@name='add' and @value='Add']");
	selenium.waitForPageToLoad("30000");
	selenium.type("filter", "gallimore");
	selenium.click("submit");
	selenium.waitForPageToLoad("30000");
	assertEquals(1, selenium.getXpathCount("//div[@id='people']/ul/li").intValue());
	assertEquals("Jonathan Gallimore", selenium.getText("//div[@id='people']/ul/li[1]"));
	}
	}</code></pre>
	</div>
	</div>
	</div>
	</div>
	<div class="sect1">
	<h2 id="_sample_code">Sample code</h2>
	<div class="sectionbody">
	<div class="paragraph">
	<p>I’ve made a sample project which demonstrates this, source is available
	<a href="http://people.apache.org/~jgallimore/PersonApp.zip">here</a> . You’ll need
	Maven to build it, and you can build it and run the tests by running
	'mvn clean install'. If want to run the tests from your IDE, you’ll need
	to have a Selenium server running, which you can do by running 'mvn
	selenium:start-server'.</p>
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