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/* constructors.java -- some checks for the constructors in the
BandCombineOp 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.BandCombineOp;
import gnu.testlet.TestHarness;
import gnu.testlet.Testlet;
import java.awt.image.BandCombineOp;
import java.awt.image.ImagingOpException;
import java.util.Arrays;
/**
* Some checks for the constructors in the {@link BandCombineOp} class.
*/
public class constructors implements Testlet
{
/**
* Runs the test using the specified harness.
*
* @param harness the test harness (<code>null</code> not permitted).
*/
public void test(TestHarness harness)
{
basicTest(harness);
emptyMatrix(harness);
invalidMatrix(harness);
}
// Test the basic operation of the constructor
private void basicTest(TestHarness harness)
{
harness.checkPoint("(constructor)");
float[][] matrix = new float[][] {new float[]{1, 2, 3},
new float[]{4, 5, 6},
new float[]{7, 8, 9}};
BandCombineOp op = new BandCombineOp(matrix, null);
float[][] resultMatrix = op.getMatrix();
float[][] expectedMatrix = new float[][] {new float[]{1, 2, 3, 0},
new float[]{4, 5, 6, 0},
new float[]{7, 8, 9, 0}};
// The ref impl seems to add a column of zeros, so we test against that
// for compatibility
if (expectedMatrix.length != resultMatrix.length)
harness.check(false);
else
for (int i = 0; i < expectedMatrix.length; i++)
harness.check(Arrays.equals(expectedMatrix[i], resultMatrix[i]));
// This happens even if the (width == height + 1)
matrix = new float[][] {new float[]{1, 2, 3, 4},
new float[]{4, 5, 6, 7},
new float[]{7, 8, 9, 1}};
op = new BandCombineOp(matrix, null);
resultMatrix = op.getMatrix();
expectedMatrix = new float[][] {new float[]{1, 2, 3, 4, 0},
new float[]{4, 5, 6, 7, 0},
new float[]{7, 8, 9, 1, 0}};
if (expectedMatrix.length != resultMatrix.length)
harness.check(false);
else
for (int i = 0; i < expectedMatrix.length; i++)
harness.check(Arrays.equals(expectedMatrix[i], resultMatrix[i]));
}
// Test behaviour of constructor when passed various empty matrices
private void emptyMatrix(TestHarness harness)
{
// Try creating with an empty matrix - this should be allowed
float[][] matrix = new float[][] {new float[]{},
new float[]{}};
try
{
new BandCombineOp(matrix, null);
harness.check(true);
}
catch (ImagingOpException e)
{
harness.check(false);
}
BandCombineOp op = new BandCombineOp(matrix, null);
float[][] resultMatrix = op.getMatrix();
float[][] expectedMatrix = new float[][] {new float[]{0},
new float[]{0}};
if (expectedMatrix.length != resultMatrix.length)
harness.check(false);
else
for (int i = 0; i < expectedMatrix.length; i++)
harness.check(Arrays.equals(expectedMatrix[i], resultMatrix[i]));
// What about a null matrix, not an empty one??
matrix = new float[][] {null, null};
try
{
new BandCombineOp(matrix, null);
harness.check(false);
}
catch (NullPointerException e)
{
harness.check(true);
}
// And pass in a null parameter, not just a matrix of nulls
try
{
new BandCombineOp(null, null);
harness.check(false);
}
catch (NullPointerException e)
{
harness.check(true);
}
}
// Checks on behaviour of constructor when passed an invalid matrix
private void invalidMatrix(TestHarness harness)
{
// What checks are done to ensure the 2-d array is a 2-d matrix?
// If a row is too short, we throw an exception...
float[][] matrix = new float[][] {new float[]{1, 2, 3, 4},
new float[]{4, 5},
new float[]{7, 8, 9}};
try
{
new BandCombineOp(matrix, null);
harness.check(false);
}
catch (ArrayIndexOutOfBoundsException e)
{
harness.check(true);
}
// And if a row is too long, it gets concatenated.
matrix = new float[][] {new float[]{1, 2},
new float[]{4, 5, 6},
new float[]{7, 8, 9, 1}};
BandCombineOp op = new BandCombineOp(matrix, null);
float[][] resultMatrix = op.getMatrix();
float[][] expectedMatrix = new float[][] {new float[]{1, 2, 0},
new float[]{4, 5, 0},
new float[]{7, 8, 0}};
if (expectedMatrix.length != resultMatrix.length)
harness.check(false);
else
for (int i = 0; i < expectedMatrix.length; i++)
harness.check(Arrays.equals(expectedMatrix[i], resultMatrix[i]));
}
}
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