Java tutorial
/* * $Id$ * * 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; import com.opensymphony.xwork2.ActionContext; import com.opensymphony.xwork2.FileManager; import com.opensymphony.xwork2.FileManagerFactory; import com.opensymphony.xwork2.conversion.impl.XWorkConverter; import com.opensymphony.xwork2.inject.Container; import com.opensymphony.xwork2.util.TextParser; import com.opensymphony.xwork2.util.OgnlTextParser; import com.opensymphony.xwork2.util.ValueStack; import com.opensymphony.xwork2.util.finder.ClassLoaderInterface; import com.opensymphony.xwork2.util.finder.ClassLoaderInterfaceDelegate; import com.opensymphony.xwork2.util.fs.DefaultFileManager; import junit.framework.TestCase; import org.apache.commons.lang3.StringUtils; import org.apache.struts2.views.util.DefaultUrlHelper; import org.apache.struts2.views.util.UrlHelper; import org.easymock.EasyMock; import org.easymock.IAnswer; import org.springframework.mock.web.MockHttpServletResponse; import org.springframework.mock.web.MockServletContext; import javax.servlet.Servlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpSession; import java.io.InputStream; import java.util.ArrayList; import java.util.HashMap; import java.util.HashSet; import java.util.List; import java.util.Map; import java.util.concurrent.BrokenBarrierException; import java.util.concurrent.CyclicBarrier; public class EmbeddedJSPResultTest extends TestCase { private HttpServletRequest request; private MockHttpServletResponse response; private MockServletContext context; private EmbeddedJSPResult result; public void testScriptlet() throws Exception { result.setLocation("org/apache/struts2/scriptlet.jsp"); result.execute(null); assertEquals("Saynotoscriptlets", StringUtils.deleteWhitespace(response.getContentAsString())); } public void testEmbedded() throws Exception { //the jsp is inside jsps.jar result.setLocation("dir/all.jsp"); result.execute(null); assertEquals("helloJGWhoamI?XXXXXXXXXXXYThissessionisnotsecure.", StringUtils.deleteWhitespace(response.getContentAsString())); } public void testFilesAreReadOnlyOnce() throws Exception { //make sure that files are not read multiple times String jsp = "org/apache/struts2/dont-use.jsp"; CountingClassLoaderInterface classLoaderInterface = new CountingClassLoaderInterface( this.getClass().getClassLoader()); context.setAttribute(ClassLoaderInterface.CLASS_LOADER_INTERFACE, classLoaderInterface); result.setLocation(jsp); result.execute(null); Integer counter0 = classLoaderInterface.counters.get(jsp); assertNotNull(counter0); result.execute(null); Integer counter1 = classLoaderInterface.counters.get(jsp); assertNotNull(counter1); assertEquals(counter0, counter1); } public void testEmbeddedAbsolutePath() throws Exception { //the jsp is inside jsps.jar result.setLocation("/dir/all.jsp"); result.execute(null); assertEquals("helloJGWhoamI?XXXXXXXXXXXYThissessionisnotsecure.", StringUtils.deleteWhitespace(response.getContentAsString())); } public void testSimple() throws Exception { result.setLocation("org/apache/struts2/simple0.jsp"); result.execute(null); assertEquals("hello", response.getContentAsString()); } //ok i give up..i don't know why this doesn't work from maven /* public void testKeyInContext() throws Exception { result.setLocation("org/apache/struts2/scriptlet.jsp"); result.execute(null); String key = JspApplicationContextImpl.class.getName() + "@" + this.getClass().getClassLoader().hashCode(); assertNotNull(context.getAttribute(key)); }*/ public void testEL() throws Exception { result.setLocation("org/apache/struts2/el.jsp"); result.execute(null); assertEquals("somethingelseText", response.getContentAsString()); } public void testAbsolutePath() throws Exception { result.setLocation("/org/apache/struts2/simple0.jsp"); result.execute(null); assertEquals("hello", response.getContentAsString()); } public void testTag0() throws Exception { result.setLocation("org/apache/struts2/tag0.jsp"); result.execute(null); assertEquals("Thissessionisnotsecure.OtherText", StringUtils.deleteWhitespace(response.getContentAsString())); } public void testIncludeSimple() throws Exception { result.setLocation("org/apache/struts2/includes0.jsp"); result.execute(null); assertEquals("helloTest", StringUtils.deleteWhitespace(response.getContentAsString())); } public void testIncludeSimpleWithDirective() throws Exception { result.setLocation("org/apache/struts2/includes3.jsp"); result.execute(null); assertEquals("helloTest", StringUtils.deleteWhitespace(response.getContentAsString())); } public void testIncludeWithSubdir() throws Exception { result.setLocation("org/apache/struts2/includes1.jsp"); result.execute(null); assertEquals("subTest", StringUtils.deleteWhitespace(response.getContentAsString())); } public void testIncludeWithParam() throws Exception { result.setLocation("org/apache/struts2/includes2.jsp"); result.execute(null); assertEquals("JGTest", StringUtils.deleteWhitespace(response.getContentAsString())); } public void testBroken0() throws Exception { try { result.setLocation("org/apache/struts2/broken0.jsp"); result.execute(null); fail("should have failed with broken jsp"); } catch (IllegalStateException ex) { //ok } } public void testJSTL() throws Exception { result.setLocation("org/apache/struts2/jstl.jsp"); result.execute(null); assertEquals("XXXXXXXXXXXY", StringUtils.deleteWhitespace(response.getContentAsString())); } public void testCachedInstances() throws InterruptedException { ServletCache cache = new ServletCache(); Servlet servlet1 = cache.get("org/apache/struts2/simple0.jsp"); Servlet servlet2 = cache.get("org/apache/struts2/simple0.jsp"); assertSame(servlet1, servlet2); } public void testCacheInstanceWithManyThreads() throws BrokenBarrierException, InterruptedException { //start a bunch of thread at the same time using CyclicBarrier and hit the cache //then wait for all the threads to end and check that they all got a reference to the same object //and the cache size should be 1 DummyServletCache cache = new DummyServletCache(); int numThreads = 70; CyclicBarrier startBarrier = new CyclicBarrier(numThreads + 1); CyclicBarrier endBarrier = new CyclicBarrier(numThreads + 1); List<ServletGetRunnable> runnables = new ArrayList<ServletGetRunnable>(numThreads); //create the threads for (int i = 0; i < numThreads; i++) { ServletGetRunnable runnable = new ServletGetRunnable(cache, startBarrier, endBarrier, ActionContext.getContext()); Thread thread = new Thread(runnable); runnables.add(runnable); thread.start(); } startBarrier.await(); endBarrier.await(); Object servlet = cache.get("org/apache/struts2/simple0.jsp"); assertEquals(1, cache.size()); for (ServletGetRunnable runnable : runnables) { assertSame(servlet, runnable.getObject()); } } public void testBeans() throws Exception { result.setLocation("org/apache/struts2/beans.jsp"); result.execute(null); assertEquals("WhoamI?", StringUtils.deleteWhitespace(response.getContentAsString())); } @Override protected void setUp() throws Exception { super.setUp(); result = new EmbeddedJSPResult(); request = EasyMock.createNiceMock(HttpServletRequest.class); response = new MockHttpServletResponse(); context = new MockServletContext(); final Map params = new HashMap(); HttpSession session = EasyMock.createNiceMock(HttpSession.class); EasyMock.replay(session); EasyMock.expect(request.getSession()).andReturn(session).anyTimes(); EasyMock.expect(request.getParameterMap()).andReturn(params).anyTimes(); EasyMock.expect(request.getParameter("username")).andAnswer(new IAnswer<String>() { public String answer() throws Throwable { return ((String[]) params.get("username"))[0]; } }); EasyMock.expect(request.getAttribute("something")).andReturn("somethingelse").anyTimes(); EasyMock.replay(request); ActionContext actionContext = new ActionContext(new HashMap<String, Object>()); ActionContext.setContext(actionContext); actionContext.setParameters(params); ServletActionContext.setRequest(request); ServletActionContext.setResponse(response); ServletActionContext.setServletContext(context); //mock value stack Map stackContext = new HashMap(); ValueStack valueStack = EasyMock.createNiceMock(ValueStack.class); EasyMock.expect(valueStack.getContext()).andReturn(stackContext).anyTimes(); EasyMock.replay(valueStack); //mock converter XWorkConverter converter = new DummyConverter(); DefaultFileManager fileManager = new DefaultFileManager(); fileManager.setReloadingConfigs(false); //mock container Container container = EasyMock.createNiceMock(Container.class); EasyMock.expect(container.getInstance(XWorkConverter.class)).andReturn(converter).anyTimes(); TextParser parser = new OgnlTextParser(); EasyMock.expect(container.getInstance(TextParser.class)).andReturn(parser).anyTimes(); EasyMock.expect(container.getInstanceNames(FileManager.class)).andReturn(new HashSet<String>()).anyTimes(); EasyMock.expect(container.getInstance(FileManager.class)).andReturn(fileManager).anyTimes(); UrlHelper urlHelper = new DefaultUrlHelper(); EasyMock.expect(container.getInstance(UrlHelper.class)).andReturn(urlHelper).anyTimes(); FileManagerFactory fileManagerFactory = new DummyFileManagerFactory(); EasyMock.expect(container.getInstance(FileManagerFactory.class)).andReturn(fileManagerFactory).anyTimes(); EasyMock.replay(container); stackContext.put(ActionContext.CONTAINER, container); actionContext.setContainer(container); actionContext.setValueStack(valueStack); } } //converter has a protected default constructor...meh class DummyConverter extends XWorkConverter { } class DummyFileManagerFactory implements FileManagerFactory { public void setReloadingConfigs(String reloadingConfigs) { } public FileManager getFileManager() { return new DefaultFileManager(); } } class DummyServletCache extends ServletCache { public int size() { return cache.size(); } } class ServletGetRunnable implements Runnable { private ServletCache servletCache; private Object object; private CyclicBarrier startBarrier; private ActionContext actionContext; private CyclicBarrier endBarrier; ServletGetRunnable(ServletCache servletCache, CyclicBarrier startBarrier, CyclicBarrier endBarrier, ActionContext actionContext) { this.servletCache = servletCache; this.startBarrier = startBarrier; this.endBarrier = endBarrier; this.actionContext = actionContext; } public void run() { ActionContext.setContext(actionContext); //wait to start all threads at once..or try at least try { startBarrier.await(); object = servletCache.get("org/apache/struts2/simple0.jsp"); for (int i = 0; i < 10; i++) { Object object2 = servletCache.get("org/apache/struts2/simple0.jsp"); if (object2 != object) throw new RuntimeException("got different object from cache"); } endBarrier.await(); } catch (Exception e) { throw new RuntimeException(e); } } public Object getObject() { return object; } } class CountingClassLoaderInterface extends ClassLoaderInterfaceDelegate { public Map<String, Integer> counters = new HashMap<String, Integer>(); public CountingClassLoaderInterface(ClassLoader classLoader) { super(classLoader); } @Override public InputStream getResourceAsStream(String name) { Integer counter = counters.get(name); counter = counter == null ? 1 : counter + 1; counters.put(name, counter); return super.getResourceAsStream(name); } }