Metacat

/**

 *  '$RCSfile$'

 *  Copyright: 2004 Regents of the University of California and the

 *              National Center for Ecological Analysis and Synthesis

 *  Purpose: To test the Access Controls in metacat by JUnit

 *

 *   '$Author: leinfelder $'

 *     '$Date: 2010-12-09 10:41:36 -0800 (Thu, 09 Dec 2010) $'

 * '$Revision: 5712 $'

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 */

package edu.ucsb.nceas.metacattest;

import java.io.*;

import java.nio.charset.Charset;

import java.util.*;

import org.apache.commons.io.IOUtils;

import org.apache.commons.io.input.XmlStreamReader;

import edu.ucsb.nceas.MCTestCase;

import edu.ucsb.nceas.metacat.client.MetacatFactory;

import edu.ucsb.nceas.metacat.client.MetacatInaccessibleException;

import junit.framework.Test;

import junit.framework.TestSuite;

/**

 * A unit test to see which readers/writers break a non-ascii char stream

 * @author berkley

 */

public class ReaderWriterTest extends MCTestCase 

{

    public static String testStr = "Checking characters like µ in doc";

    /**

     * Constructor to build the test

     *

     * @param name the name of the test method

     */

    public ReaderWriterTest(String name) {

        super(name);

    }

    /**

     * Establish a testing framework by initializing appropriate objects

     */

    public void setUp() 

    {

    }

    /**

     * Release any objects after tests are complete

     */

    public void tearDown() 

    {

    }

    /**

     * Create a suite of tests to be run together

     */

    public static Test suite() 

    {

        TestSuite suite = new TestSuite();

        suite.addTest(new ReaderWriterTest("initialize"));

        suite.addTest(new ReaderWriterTest("testStringReaderAndWriter"));

        suite.addTest(new ReaderWriterTest("testFileReaderAndWriter"));

        suite.addTest(new ReaderWriterTest("testBufferedReaderAndWriter"));

        suite.addTest(new ReaderWriterTest("charArrayReaderAndWriter"));

        suite.addTest(new ReaderWriterTest("testInputStreamReaderAndWriter"));

//        suite.addTest(new ReaderWriterTest("testBufferedReaderAndWriter"));

//        suite.addTest(new ReaderWriterTest("testBufferedReaderAndWriter"));

//        suite.addTest(new ReaderWriterTest("testBufferedReaderAndWriter"));

//        suite.addTest(new ReaderWriterTest("testBufferedReaderAndWriter"));

        return suite;

    }

    /**

     * test InputStreamReader and InputStreamWriter

     */

    public void testInputStreamReaderAndWriter()

    {

        try

        {

            File tmpFile = getTempFile();

            FileOutputStream fos = new FileOutputStream(tmpFile);

            fos.write(testStr.getBytes());

            fos.flush();

            fos.close();

            FileInputStream fis = new FileInputStream(tmpFile);

            InputStreamReader isr = new InputStreamReader(fis);

            String s = isr.toString();

            assertTrue(s.equals(testStr));

        }

        catch(Exception e)

        {

            fail("Unexpected error in testInputStreamReaderAndWriter: " + e.getMessage());

        }

    }

    /**

     * test FileReader and FileWriter

     */

    public void charArrayReaderAndWriter()

    {

        try

        {

            CharArrayWriter caw = new CharArrayWriter();

            char[] c = new char[testStr.length()];

            testStr.getChars(0, testStr.length(), c, 0);

            caw.write(c);

            assertTrue(caw.toString().equals(testStr));

            CharArrayReader car = new CharArrayReader(c);

            String s = readReader(car);

            assertTrue(s.equals(testStr));

        }

        catch(Exception e)

        {

            fail("Unexpected error in charArrayReaderAndWriter: " + e.getMessage());

        }

    }

    /**

     * test FileReader and FileWriter

     */

    public void testBufferedReaderAndWriter()

    {

        try

        {

            File tmp = getTempFile();

            FileWriter fw = new FileWriter(tmp);

            BufferedWriter bw = new BufferedWriter(fw);

            bw.write(testStr);

            bw.flush();

            bw.close();

            FileReader fr = new FileReader(tmp);

            BufferedReader br = new BufferedReader(fr);

            String s = readReader(br);

            assertTrue(s.equals(testStr));

        }

        catch(Exception e)

        {

            fail("Unexpected error in testBufferedReaderAndWriter: " + e.getMessage());

        }

    }

    /**

     * test FileReader and FileWriter

     */

    public void testFileReaderAndWriter()

    {

        try

        {

            File tmp = getTempFile();

            FileWriter fw = new FileWriter(tmp);

            fw.write(testStr);

            fw.flush();

            fw.close();

            FileReader fr = new FileReader(tmp);

            String s = readReader(fr);

            assertTrue(s.equals(testStr));

        }

        catch(Exception e)

        {

            fail("Unexpected error in testFileReaderAndWriter: " + e.getMessage());

        }

    }

    /**

     * test StringReader and StringWriter

     */

    public void testStringReaderAndWriter()

    {

        try

        {

            StringReader sr = new StringReader(testStr);

            String s = readReader(sr);

            assertTrue(s.equals(testStr));

            Writer testWriter = writeStringToWriter(testStr);

            assertTrue(testWriter.toString().equals(testStr));

            //tmp.delete();

        }

        catch(Exception e)

        {

            fail("Unexpected error in testStringReaderAndWriter");

        }

    }

    /**

     * test Commons IO detection

     */

    public void testXMLEncodingDectection()

    {

        try

        {

        	System.out.println("default charset:" + Charset.defaultCharset().displayName());

        	String sampleXML = "<?xml version='1.0' encoding='UTF-8'><test>my content 你</test>";

        	// get bytes using different encoding - shouldn't matter what we use for the prolog

        	XmlStreamReader xsr = 

        		new XmlStreamReader(

        				new BufferedInputStream(new ByteArrayInputStream(sampleXML.getBytes("ISO-8859-1"))));

        	System.out.println("detected encoding:" + xsr.getEncoding());

        	// read the string [again] using the detected encoding

        	// NOTE: XmlStreamReader consumes the entire stream and does not suport reset()

        	// Besides, we'd have the wrong bytes anyway

        	String result = IOUtils.toString(new ByteArrayInputStream(sampleXML.getBytes(xsr.getEncoding())));

            System.out.println(result);

        	assertTrue(result.equals(sampleXML));

        }

        catch(Exception e)

        {

        	e.printStackTrace();

            fail("Unexpected error in testXMLEncodingDectection: " + e.getMessage());

        }

    }

    public void initialize()

    {

        assert(1 == 1);

    }

    private Writer writeStringToWriter(String s)

        throws IOException

    {

        StringWriter w = new StringWriter();

        w.write(s);

        return w;

    }

    private String readReader(Reader sr)

        throws IOException

    {

        char[] c = new char[1024];

        int numread = sr.read(c, 0, 1024);

        StringBuffer sb = new StringBuffer();

        while(numread != -1)

        {

            sb.append(c, 0, numread);

            numread = sr.read(c, 0, 1024);

        }

        return sb.toString();

    }

    private File getTempFile()

    {

        File f = new File("/tmp/ReaderWriterTest." + new Date().getTime() + ".tmp");

        return f;

    }

}