/*
 * Copyright 1999-2004 The Apache Software Foundation.
 * 
 * Licensed 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.
 */

/* $Id$ */
 
package org.apache.fop;

import java.io.File;
import java.io.InputStream;

import org.apache.batik.transcoder.Transcoder;
import org.apache.batik.transcoder.TranscoderInput;
import org.apache.batik.transcoder.TranscoderOutput;
import org.apache.commons.io.output.ByteArrayOutputStream;

/**
 * Basic runtime test for FOP's transcoders. It is used to verify that 
 * nothing obvious is broken after compiling.
 * @author <a href="mailto:jeremias@apache.org">Jeremias Maerki</a>
 */
public abstract class AbstractBasicTranscoderTestCase extends AbstractFOPTestCase {

    /**
     * @see junit.framework.TestCase#TestCase(String)
     */
    public AbstractBasicTranscoderTestCase(String name) {
        super(name);
    }

    /**
     * Creates the transcoder to test.
     * @return the newly instantiated transcoder
     */
    protected abstract Transcoder createTranscoder();

    /**
     * Runs the PDF transcoder as if it were called by Batik's rasterizer. 
     * Without special configuration stuff.
     * @throws Exception if a problem occurs
     */
    public void testGenericPDFTranscoder() throws Exception {
        //Create transcoder
        Transcoder transcoder = createTranscoder();
        
        //Setup input
        File svgFile = new File(getBaseDir(), "test/resources/fop/svg/text.svg");
        InputStream in = new java.io.FileInputStream(svgFile);
        try {
            TranscoderInput input = new TranscoderInput(in);
            
            //Setup output
            ByteArrayOutputStream out = new ByteArrayOutputStream();
            try {
                TranscoderOutput output = new TranscoderOutput(out);
                
                //Do the transformation
                transcoder.transcode(input, output);
            } finally {
                out.close();
            }
            assertTrue("Some output expected", out.size() > 0);
        } finally {
            in.close();
        }
    }

}