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      1 /*
      2  * Licensed to the Apache Software Foundation (ASF) under one or more
      3  * contributor license agreements.  See the NOTICE file distributed with
      4  * this work for additional information regarding copyright ownership.
      5  * The ASF licenses this file to You under the Apache License, Version 2.0
      6  * (the "License"); you may not use this file except in compliance with
      7  * the License.  You may obtain a copy of the License at
      8  *
      9  *     http://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  *  Unless required by applicable law or agreed to in writing, software
     12  *  distributed under the License is distributed on an "AS IS" BASIS,
     13  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  *
     15  *  See the License for the specific language governing permissions and
     16  *  limitations under the License.
     17  */
     18 
     19 /**
     20  * @author Vitaly A. Provodin
     21  */
     22 
     23 /**
     24  * Created on 31.01.2005
     25  */
     26 package org.apache.harmony.jpda.tests.share;
     27 
     28 import org.apache.harmony.jpda.tests.framework.LogWriter;
     29 import org.apache.harmony.jpda.tests.framework.TestErrorException;
     30 
     31 /**
     32  * All debuggee of unit tests must extend this class
     33  */
     34 public abstract class Debuggee {
     35 
     36     /**
     37      * Instance of LogWriter implementation.
     38      */
     39     public LogWriter logWriter;
     40 
     41     /**
     42      * Instance of JPDA options used in all JPDA/JDWP tests.
     43      */
     44     public JPDATestOptions settings;
     45 
     46     /**
     47      * Executes main actions of debuggee. This method must be implemented by
     48      * subclasses.
     49      */
     50     public abstract void run();
     51 
     52     /**
     53      * Initializes debuggee
     54      */
     55     public void onStart() {
     56         settings = new JPDATestOptions();
     57         logWriter = new JPDALogWriter(System.out, null, settings.isVerbose());
     58     }
     59 
     60     /**
     61      * Executes final stage of debuggee.
     62      */
     63     public void onFinish() {
     64     }
     65 
     66     /**
     67      * Starts debuggee specified by <code>debuggeeClass</code>.
     68      *
     69      * @param debuggeeClass
     70      *            debuggee's class
     71      */
     72     public static void runDebuggee(Class<? extends Debuggee> debuggeeClass) {
     73         Debuggee debuggee = null;
     74         try {
     75             debuggee = debuggeeClass.newInstance();
     76         } catch (Exception e) {
     77             throw new TestErrorException("Debuggee can not be started: "
     78                     + debuggeeClass.getName(), e);
     79         }
     80 
     81         debuggee.onStart();
     82 
     83         try {
     84             debuggee.run();
     85         } catch (Throwable e) {
     86             debuggee.logWriter.printError(e);
     87         } finally {
     88             debuggee.onFinish();
     89         }
     90     }
     91 }
     92