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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2012 Oracle and/or its affiliates. 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://glassfish.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  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 packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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 * 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 don't 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
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 * 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 com.sun.istack.test;

import junit.framework.AssertionFailedError;
import junit.framework.Test;
import junit.framework.TestListener;
import org.apache.tools.ant.taskdefs.optional.junit.JUnitResultFormatter;
import org.apache.tools.ant.taskdefs.optional.junit.JUnitTest;
import org.apache.tools.ant.taskdefs.optional.junit.JUnitVersionHelper;

import java.io.ByteArrayOutputStream;
import java.io.Closeable;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintStream;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 * {@link TestListener} that bridges to {@link JUnitResultFormatter}.
 *
 * @author Kohsuke Kawaguchi
 */
public class AntXmlFormatter implements TestListener,Closeable {
    private JUnitResultFormatter antf;
    private JUnitTest antTest; // Ant wants this
    private final Class formatter;
    private long startTime;

    private final File dir;

    FileOutputStream outStream = null;
            
    /**
     * Stdout, stderr that were replaced. Kept so that we can restore them in {@link #close()}.
     */
    private final PrintStream out,err;

    private final ByteArrayOutputStream outBuf = new ByteArrayOutputStream();
    private final ByteArrayOutputStream errBuf = new ByteArrayOutputStream();

    private int id = 0;

    public AntXmlFormatter(Class formatter, File dir) {
        this.formatter = formatter;
        this.dir = dir;

        out = System.out;
        err = System.err;
        System.setOut(new PrintStream(new ForkOutputStream(outBuf,out)));
        System.setErr(new PrintStream(new ForkOutputStream(errBuf,err)));
    }

    public void close() {
        // restore
        System.setOut(out);
        System.setErr(err);
    }

    public void addError(Test test, Throwable t) {
        antf.addError(test,t);
        antTest.setCounts(1,0,1);
    }

    public void addFailure(Test test, AssertionFailedError t) {
        antf.addFailure(test,t);
        antTest.setCounts(1,1,0);
    }

    public void startTest(Test test) {
        assert antf==null;
        try {
            antf = formatter.newInstance();
        } catch (InstantiationException e) {
            throw new InstantiationError(e.getMessage());
        } catch (IllegalAccessException e) {
            throw new IllegalAccessError(e.getMessage());
        }

        String testName = getTestName(test);

        antTest = new JUnitTest(testName);
        antTest.setCounts(1,0,0);
        try {
            outStream = new FileOutputStream(new File(dir,getResultFileName(testName)));
            antf.setOutput(outStream);
        } catch (FileNotFoundException e) {
            throw new Error(e);
        }
        antf.startTestSuite(antTest);
        antf.startTest(test);
        outBuf.reset();
        errBuf.reset();
        startTime = System.currentTimeMillis();
    }

    private String getTestName(Test test) {
        String testName = JUnitVersionHelper.getTestCaseName(test);
        if(testName==null)      testName="unknown";

        // if you extend from junit.framework.TestCase where you have public testXXX methods,
        // those test names are just the method name, and doesn't include the package name.
        // this doesn't work well with our harness, which uses the fully-qualified name as the
        // test names. To bridge this gap, detect the plain TestCase classes and fix up
        // the package name.
        if(testName.indexOf('.')==-1)
            testName = test.getClass().getPackage().getName()+"."+testName;

        return testName;
    }

    private String getResultFileName(String testName) {
        // try to use a test name.
        StringBuilder sb = new StringBuilder(testName);
        if(sb.length()>70)
            sb.delete(0,sb.length()-70);   // remove any portion longer than 70 to avoid file names that are too long

        for(int i=0; i