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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common
 * Development and Distribution License("CDDL") (collectively, the
 * "License"). You may not use this file except in compliance with the
 * License. You can obtain a copy of the License at
 * http://www.netbeans.org/cddl-gplv2.html
 * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
 * specific language governing permissions and limitations under the
 * License.  When distributing the software, include this License Header
 * Notice in each file and include the License file at
 * nbbuild/licenses/CDDL-GPL-2-CP.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the GPL Version 2 section of the License file that
 * accompanied this code. If applicable, add the following below the
 * License Header, with the fields enclosed by brackets [] replaced by
 * your own identifying information:
 * "Portions Copyrighted [year] [name of copyright owner]"
 *
 * Contributor(s):
 *
 * The Original Software is NetBeans. The Initial Developer of the Original
 * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
 * Microsystems, Inc. All Rights Reserved.
 *
 * If you wish your version of this file to be governed by only the CDDL
 * or only the GPL Version 2, indicate your decision by adding
 * "[Contributor] elects to include this software in this distribution
 * under the [CDDL or GPL Version 2] license." If you do not indicate a
 * single choice of license, a recipient has the option to distribute
 * your version of this file under either the CDDL, the GPL Version 2 or
 * to extend the choice of license to its licensees as provided above.
 * However, if you add GPL Version 2 code and therefore, elected the GPL
 * Version 2 license, then the option applies only if the new code is
 * made subject to such option by the copyright holder.
 */

package org.netbeans.xtest.plugin.ide;

import java.io.IOException;
import java.lang.reflect.Method;
import java.util.Iterator;
import java.util.logging.Logger;
import junit.framework.AssertionFailedError;
import junit.framework.Test;
import junit.framework.TestListener;
import junit.framework.TestResult;
import org.netbeans.core.execution.Install;
import org.netbeans.xtest.plugin.ide.services.XTestErrorManager;
import org.netbeans.xtest.testrunner.JUnitTestRunner;

/**
 * Portion of Main that needs to run with access to Execution API & impl.
 * @author Jan Chalupa, Jesse Glick
 */
public class MainWithExec implements Main.MainWithExecInterface {
    
    private static final Logger LOGGER = Logger.getLogger(MainWithExec.class.getName());

    /* Terminates all pending tasks.
     * It calls org.netbeans.core.execution.Install.killPendingTasks() method.
     */
    public void killPendingTasks() {
        try {
            Class.forName("org.netbeans.core.execution.Install");
        } catch (ClassNotFoundException cnfe) {
            // class is not available
            return;
        }
        try {
            Method killPendingTasksMethod = Install.class.getDeclaredMethod("killPendingTasks", null);
            killPendingTasksMethod.setAccessible(true);
            killPendingTasksMethod.invoke(null, null);
            // better sleep for a sec, so they can be really killed
            Thread.sleep(2000);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /** Discards all changes in modified files. */
    public void discardChanges() {
        Object[] dobs = org.openide.loaders.DataObject.getRegistry().getModifiedSet().toArray();
        if(dobs.length > 0) {
            LOGGER.info(new java.util.Date().toString() + ": discarding changes in unsaved files:");
            for(int i=0;i<dobs.length;i++) {
                org.openide.loaders.DataObject obj = (org.openide.loaders.DataObject)dobs[i];
                LOGGER.info("        "+obj.getPrimaryFile().getPath());
                obj.setModified(false);
            }
        }
    }
    
    public void exit() {
        org.openide.LifecycleManager.getDefault().exit();
    }
    
    public void run() throws Exception {
        try {
            if("true".equals(System.getProperty("xtest.ide.error.manager")) ||
                    "true".equals(System.getProperty("xtest.ide.handler"))) {
                // install xtest error manager
                MyJUnitTestRunner testRunner = new MyJUnitTestRunner();
                testRunner.runTests();
            } else {
                JUnitTestRunner testRunner = new JUnitTestRunner(null, System.out);
                testRunner.runTests();
            }
        } catch (Throwable t) {
            System.out.println("Error - during test run caught exception: "+t.getMessage());
            t.printStackTrace();
        }
    }
    
    /** This class adds XTestResultListener to be able to track exceptions
     * caugth by XTestErrorManager.
     */
    private class MyJUnitTestRunner extends JUnitTestRunner {
        
        public MyJUnitTestRunner() throws IOException {
            super(null, System.out);
            if("true".equals(System.getProperty("xtest.ide.handler"))) {
                // adds handler to track exceptions thrown by logger
                Logger.getLogger("").addHandler(new XTestIDEHandler());
            }
        }
        
        protected void addTestListeners(TestResult testResult) {
            // [pzajac] XTestErrorListenr listener must be first
            testResult.addListener(new XTestResultListener(testResult));
            super.addTestListeners(testResult);
        }
    }
    
    /** This TestListener reports error for a exceptions from ErrorManager
     */
    private static class XTestResultListener implements TestListener {
        
        private  TestResult result;
        private boolean checkXTestErrorManager = "true".equals(System.getProperty("xtest.ide.error.manager"));
        private boolean errorInTest = false;
        
        public XTestResultListener(TestResult result) {
            this.result = result;
        }
        
        /** An error occurred. */
        public void addError(Test test, Throwable t) {
            // report this error and ignore possible additional errors from IDE
            errorInTest = true;
        }
        
        /** A failure occurred.*/
        public void addFailure(Test test, AssertionFailedError t){};
        
        /* A test ended. */
        public void endTest(Test test) {
            if(!errorInTest) {
                try {
                    Iterator it = XTestErrorManager.getExceptions().iterator();
                    if (checkXTestErrorManager && it.hasNext()) {
                        // exception was thrown => add the first found exception as
                        // an error (i.e. its stack trace will be printed in results)
                        result.addError(test, (Throwable)it.next());
                        XTestErrorManager.clearExceptions();
                    } else {
                        // check XTestIDEHandler
                        Iterator itHandler = XTestIDEHandler.getExceptions().iterator();
                        if(itHandler.hasNext()) {
                            // exception was thrown => add the first found exception as
                            // an error (i.e. its stack trace will be printed in results)
                            result.addError(test, (Throwable)itHandler.next());
                            XTestIDEHandler.clearExceptions();
                        }
                    }
                } catch (Exception e) {
                    // ClassNotFound exception, etc
                    e.printStackTrace();
                }
            } 
            errorInTest = false;
        }
        
        /** A test started. */
        public void startTest(Test test){};
        
    } // XTestResultListener
}
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