test-sources/org/apache/batik/svggen/SVGAccuracyTestValidator.java

/*****************************************************************************
 * Copyright (C) The Apache Software Foundation. All rights reserved.        *
 * ------------------------------------------------------------------------- *
 * This software is published under the terms of the Apache Software License *
 * version 1.1, a copy of which has been included with this distribution in  *
 * the LICENSE file.                                                         *
 *****************************************************************************/

package org.apache.batik.svggen;

import java.awt.Graphics2D;
import java.awt.Color;

import java.net.URL;
import java.io.File;

import org.apache.batik.test.DefaultTestSuite;
import org.apache.batik.test.Test;
import org.apache.batik.test.TestReportValidator;
import org.apache.batik.test.TestReport;

/**
 * Validates the operation of the <tt>SVGAccuractyTest</tt> class
 *
 * @author <a href="mailto:vhardy@apache.org">Vincent Hardy</a>
 * @version $Id$
 */
public class SVGAccuracyTestValidator extends DefaultTestSuite {
    /**
     * Checks that test fails if:
     * + Rendering sequence generates an exception
     * + There is no reference image
     * + Reference SVG differs from the generated SVG
     * Checks that test works if SVG and reference SVG 
     * are identical
     */
    public SVGAccuracyTestValidator(){
        addTest(new NullPainter());
        addTest(new PainterWithException());
        addTest(new NullReferenceURL());
        addTest(new InexistantReferenceURL());
        addTest(new DiffWithReferenceImage());
        addTest(new SameAsReferenceImage());
    }

    static class NullPainter extends TestReportValidator {
        public TestReport runImpl() throws Exception {
            Painter painter = null;
            URL refURL = new URL("http",
                                 "dummyHost",
                                 "dummyFile.svg");

            Test t 
                = new SVGAccuracyTest(painter, refURL);
            
            setConfig(t,
                      false,
                      SVGAccuracyTest.ERROR_CANNOT_GENERATE_SVG);

            return super.runImpl();
        }
    }

    static class PainterWithException extends TestReportValidator 
        implements Painter {

        public void paint(Graphics2D g){
            g.setComposite(null); // Will cause the exception
            g.fillRect(0, 0, 20, 20);
        }

        public TestReport runImpl() throws Exception {
            Painter painter = this;
            URL refURL = new URL("http",
                                 "dummyHost",
                                 "dummyFile.svg");
            Test t = new SVGAccuracyTest(painter, refURL);
            
            setConfig(t,
                      false,
                      SVGAccuracyTest.ERROR_CANNOT_GENERATE_SVG);

            return super.runImpl();
        }
    }

    static class ValidPainterTest extends TestReportValidator 
        implements Painter{
        
        public void paint(Graphics2D g){
            g.setPaint(Color.red);
            g.fillRect(0, 0, 40, 40);
        }
    }

    static class NullReferenceURL extends ValidPainterTest {
        public TestReport runImpl() throws Exception {
            Test t = new SVGAccuracyTest(this, null);

            setConfig(t,
                      false,
                      SVGAccuracyTest.ERROR_CANNOT_OPEN_REFERENCE_SVG_FILE);

            return super.runImpl();
        }
    }

    static class InexistantReferenceURL extends ValidPainterTest {
        public TestReport runImpl() throws Exception {
            Test t = new SVGAccuracyTest(this,
                                         new URL("http",
                                                 "dummyHost",
                                                 "dummyFile.svg"));

            setConfig(t,
                      false,
                      SVGAccuracyTest.ERROR_CANNOT_OPEN_REFERENCE_SVG_FILE);

            return super.runImpl();
        }
    }

    static class DiffWithReferenceImage extends ValidPainterTest {
        public TestReport runImpl() throws Exception {
            File tmpFile = File.createTempFile("EmptySVGReference",
                                               null);
            tmpFile.deleteOnExit();

            Test t = new SVGAccuracyTest(this,
                                         tmpFile.toURL());

            setConfig(t,
                      false,
                      SVGAccuracyTest.ERROR_GENERATED_SVG_INACCURATE);

            return super.runImpl();
        }
    }

    static class SameAsReferenceImage extends ValidPainterTest {
        public TestReport runImpl() throws Exception {
            File tmpFile = File.createTempFile("SVGReference",
                                               null);
            tmpFile.deleteOnExit();

            SVGAccuracyTest t = new SVGAccuracyTest(this,
                                                    tmpFile.toURL());
            
            t.setSaveSVG(tmpFile);

            setConfig(t,
                      false,
                      SVGAccuracyTest.ERROR_GENERATED_SVG_INACCURATE);

            // This first run should fail but it should
            // have created the reference image in tmpFile
            super.runImpl();

            // Second run should work because the reference
            // image should match 
            setConfig(t,
                      true,
                      null);

            return super.runImpl();
        }
    }

}