/* createCompatibleDestRaster.java -- some checks for the
              createCompatibleDestRaster() method of the RescaleOp class.
   Copyright (C) 2006 Francis Kung <fkung@redhat.com>
This file is part of Mauve.

Mauve 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, or (at your option)
any later version.

Mauve 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 Mauve; see the file COPYING.  If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA.
*/

// Tags: JDK1.2

package gnu.testlet.java.awt.image.RescaleOp;

import gnu.testlet.TestHarness;
import gnu.testlet.Testlet;

import java.awt.Point;
import java.awt.image.DataBuffer;
import java.awt.image.MultiPixelPackedSampleModel;
import java.awt.image.Raster;
import java.awt.image.RescaleOp;

/**
 * Checks for the createCompatibleDestRaster method in the
 * {@link RescaleOp} class.
 */
public class createCompatibleDestRaster implements Testlet 
{

  /**
   * Runs the test using the specified harness.
   * 
   * @param harness  the test harness (<code>null</code> not permitted). 
   */
  public void test(TestHarness harness)      
  {
    RescaleOp op = new RescaleOp(1, 1, null);
    Raster raster = Raster.createWritableRaster(
        new MultiPixelPackedSampleModel(DataBuffer.TYPE_BYTE, 10, 20, 8), null);
    Raster dest = op.createCompatibleDestRaster(raster);
    harness.check(dest.getWidth(), 10);
    harness.check(dest.getHeight(), 20);
    harness.check(dest.getNumBands(), 1);
    harness.check(dest.getSampleModel() instanceof MultiPixelPackedSampleModel);
    harness.check(dest.getTransferType(), raster.getTransferType());
    harness.check(dest.getDataBuffer().getDataType(), raster.getDataBuffer().getDataType());
    harness.check(dest.getNumDataElements(), raster.getNumDataElements());
  
    // try null argument
    boolean pass = false;
    try
    {
      op.createCompatibleDestRaster(null);
    }
    catch (NullPointerException e)
    {
      pass = true;
    }
    harness.check(pass);
    
    // Try a different type
    raster = Raster.createBandedRaster(DataBuffer.TYPE_BYTE, 25, 40, 3, new Point(5, 5));
    Raster dst = op.createCompatibleDestRaster(raster);
    harness.check(dst.getNumBands(), raster.getNumBands());
    harness.check(dst.getTransferType(), raster.getTransferType());
    harness.check(dst.getDataBuffer().getDataType(), raster.getDataBuffer().getDataType());
    harness.check(dst.getNumDataElements(), raster.getNumDataElements());
    
    // Try a different number of bands
    raster = Raster.createBandedRaster(DataBuffer.TYPE_INT, 25, 40, 5, new Point(5, 5));
    dst = op.createCompatibleDestRaster(raster);
    harness.check(dst.getNumBands(), raster.getNumBands());
    harness.check(dst.getTransferType(), raster.getTransferType());
    harness.check(dst.getDataBuffer().getDataType(), raster.getDataBuffer().getDataType());
    harness.check(dst.getNumDataElements(), raster.getNumDataElements());
  }
}