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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.image.DataBufferByte;
import gnu.testlet.TestHarness;
import gnu.testlet.Testlet;
import java.awt.image.DataBuffer;
import java.awt.image.DataBufferByte;
/**
* Some tests for the constructors in the {@link DataBufferByte} 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)
{
testConstructor1(harness);
testConstructor2(harness);
testConstructor3(harness);
testConstructor4(harness);
testConstructor5(harness);
testConstructor6(harness);
}
private void testConstructor1(TestHarness harness)
{
harness.checkPoint("DataBufferByte(int)");
DataBufferByte b1 = new DataBufferByte(1);
harness.check(b1.getDataType() == DataBuffer.TYPE_BYTE);
harness.check(b1.getSize() == 1);
harness.check(b1.getNumBanks() == 1);
harness.check(b1.getOffset() == 0);
DataBufferByte b2 = new DataBufferByte(0);
harness.check(b2.getSize() == 0);
harness.check(b2.getNumBanks() == 1);
harness.check(b2.getOffset() == 0);
boolean pass = false;
try
{
DataBufferByte b3 = new DataBufferByte(-1);
}
catch (NegativeArraySizeException e)
{
pass = true;
}
harness.check(pass);
}
private void testConstructor2(TestHarness harness)
{
harness.checkPoint("DataBufferByte(byte[][], int)");
byte[][] source = new byte[][] {{1, 2}};
DataBufferByte b = new DataBufferByte(source, 1);
harness.check(b.getSize() == 1);
harness.check(b.getNumBanks() == 1);
harness.check(b.getOffset() == 0);
// does a change to the source array affect the buffer? yes
byte[][] banks = b.getBankData();
harness.check(banks[0][0] == 1);
source[0][0] = 3;
harness.check(banks[0][0] == 3);
// check null source
boolean pass = false;
try
{
DataBufferByte b1 = new DataBufferByte((byte[][]) null, 1);
}
catch (NullPointerException e)
{
pass = true;
}
harness.check(pass);
// check negative size
DataBufferByte b1 = new DataBufferByte(source, -1);
harness.check(b1.getSize() == -1);
}
private void testConstructor3(TestHarness harness)
{
harness.checkPoint("DataBufferByte(byte[][], int, int[])");
byte[][] source = new byte[][] {{1, 2}};
DataBufferByte b = new DataBufferByte(source, 1, new int[] {0});
harness.check(b.getSize() == 1);
harness.check(b.getNumBanks() == 1);
harness.check(b.getOffset() == 0);
// test where offsets are specified
source = new byte[][] {{1, 2, 3}, {4, 5, 6, 7}};
b = new DataBufferByte(source, 2, new int[] {0, 1});
harness.check(b.getSize() == 2);
harness.check(b.getNumBanks() == 2);
harness.check(b.getOffsets()[1] == 1);
harness.check(b.getElem(1, 0) == 5);
// check null source
boolean pass = false;
try
{
DataBufferByte b1 = new DataBufferByte((byte[][]) null, 1, new int[] {0});
}
catch (NullPointerException e)
{
pass = true;
}
harness.check(pass);
// check null offsets
pass = false;
try
{
DataBufferByte b1 = new DataBufferByte(new byte[][]{{1, 2}}, 1, (int[]) null);
}
catch (NullPointerException e)
{
pass = true;
}
harness.check(pass);
// check source doesn't match offsets array
pass = false;
try
{
DataBufferByte b2 = new DataBufferByte(new byte[][]{{1, 2}}, 1, new int[] {0, 0});
}
catch (ArrayIndexOutOfBoundsException e)
{
pass = true;
}
harness.check(pass);
}
private void testConstructor4(TestHarness harness)
{
harness.checkPoint("DataBufferByte(byte[], int)");
DataBufferByte b = new DataBufferByte(new byte[] {1, 2}, 2);
harness.check(b.getSize() == 2);
harness.check(b.getNumBanks() == 1);
harness.check(b.getOffset() == 0);
// check null source
boolean pass = false;
try
{
// this constructor doesn't throw an exception until you
// try to access the (null) data bank
DataBufferByte b1 = new DataBufferByte((byte[]) null, 1);
int ignore = b1.getElem(0);
}
catch (NullPointerException e)
{
pass = true;
}
harness.check(pass);
}
private void testConstructor5(TestHarness harness)
{
harness.checkPoint("DataBufferByte(byte[], int, int)");
DataBufferByte b = new DataBufferByte(new byte[] {1, 2}, 2, 0);
harness.check(b.getSize() == 2);
harness.check(b.getNumBanks() == 1);
harness.check(b.getOffset() == 0);
boolean pass = false;
try
{
// this constructor doesn't throw an exception until you
// try to access the (null) data bank
DataBufferByte b1 = new DataBufferByte((byte[]) null, 1, 0);
int ignore = b1.getElem(0);
}
catch (NullPointerException e)
{
pass = true;
}
harness.check(pass);
// does negative size fail? no
pass = true;
try
{
DataBufferByte b2 = new DataBufferByte(new byte[] {1, 2}, -1, 0);
}
catch (NegativeArraySizeException e)
{
pass = false;
}
harness.check(pass);
}
private void testConstructor6(TestHarness harness)
{
harness.checkPoint("DataBufferByte(int, int)");
DataBufferByte b = new DataBufferByte(2, 3);
harness.check(b.getNumBanks() == 3);
harness.check(b.getSize() == 2);
harness.check(b.getOffset() == 0);
// does negative size fail? yes
boolean pass = false;
try
{
DataBufferByte b1 = new DataBufferByte(-1, 1);
}
catch (NegativeArraySizeException e)
{
pass = true;
}
harness.check(pass);
// does negative banks fail? yes
pass = false;
try
{
DataBufferByte b1 = new DataBufferByte(1, -1);
}
catch (NegativeArraySizeException e)
{
pass = true;
}
harness.check(pass);
}
}
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