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//Tags: JDK1.2
//Copyright (C) 2004 David Gilbert <david.gilbert@object-refinery.com>
//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, 59 Temple Place - Suite 330,
//Boston, MA 02111-1307, USA. */
package gnu.testlet.java.awt.geom.AffineTransform;
import gnu.testlet.TestHarness;
import gnu.testlet.Testlet;
import java.awt.geom.AffineTransform;
import java.awt.geom.NoninvertibleTransformException;
/**
* Some tests for the {@link AffineTransform} class.
*/
public class createInverse implements Testlet
{
/**
* Runs the test using the specified harness.
*
* @param harness the test harness (<code>null</code> not permitted).
*/
public void test(TestHarness harness)
{
// inverse of identity is identity
AffineTransform t1 = new AffineTransform();
try
{
AffineTransform t2 = t1.createInverse();
harness.check(t2.getType() == AffineTransform.TYPE_IDENTITY);
}
catch (NoninvertibleTransformException e)
{
harness.check(false);
}
t1 = new AffineTransform(7.0, 8.0, 9.0, 10.0, 11.0, 12.0);
try
{
AffineTransform t3 = t1.createInverse();
harness.check(t3.getScaleX(), -5.0);
harness.check(t3.getShearX(), 4.5);
harness.check(t3.getTranslateX(), 1.0);
harness.check(t3.getShearY(), 4.0);
harness.check(t3.getScaleY(), -3.5);
harness.check(t3.getTranslateY(), -2.0);
}
catch (NoninvertibleTransformException e)
{
harness.check(false);
}
AffineTransform t4 = new AffineTransform(3.0, 3.0, 3.0, 3.0, 3.0, 3.0);
try
{
@SuppressWarnings("unused")
AffineTransform t5 = t4.createInverse();
harness.check(false);
}
catch (NoninvertibleTransformException e)
{
harness.check(true);
}
}
}
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