test/jdk/java/awt/image/RescaleOp/RescaleOpExceptionTest.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
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 */

/*
 * @test
 * @bug 8180501
 * @summary Verify RescaleOp.filter() throws exception for different sized
            source and destination.
 * @run main RescaleOpExceptionTest
 */

import java.awt.image.BufferedImage;
import static java.awt.image.BufferedImage.TYPE_INT_RGB;
import java.awt.image.RescaleOp;
import java.awt.image.WritableRaster;

public class RescaleOpExceptionTest {

    public static void main(String[] args) throws Exception {

        RescaleOp op = new RescaleOp(1.0f, 0.0f, null);

        BufferedImage srcI = new BufferedImage(1, 1, TYPE_INT_RGB);
        BufferedImage dstI = new BufferedImage(1, 2, TYPE_INT_RGB);

        boolean caughtIAE = false;
        try {
             op.filter(srcI, dstI);
        } catch (IllegalArgumentException e) {
            caughtIAE = true;
        }
        if (!caughtIAE) {
            throw new RuntimeException("Expected IllegalArgumentException");
        }

        WritableRaster srcR = srcI.getRaster();
        WritableRaster dstR = dstI.getRaster();

        caughtIAE = false;
        try {
             op.filter(srcR, dstR);
        } catch (IllegalArgumentException e) {
            caughtIAE = true;
        }
        if (!caughtIAE) {
            throw new RuntimeException("Expected IllegalArgumentException");
        }
    }
}