/* getStartOffset.java -- Checks the getStartOffset method in BranchElement
Copyright (C) 2006 Roman Kennke (kennke@aicas.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.javax.swing.text.AbstractDocument.BranchElement;
import javax.swing.text.AbstractDocument;
import javax.swing.text.Element;
import javax.swing.text.PlainDocument;
import gnu.testlet.TestHarness;
import gnu.testlet.Testlet;
public class getStartOffset implements Testlet
{
/**
* The entry point in this test.
*
* @param harness the test harness to use
*/
public void test(TestHarness harness)
{
testEmptyBranchElement(harness);
testOneLeafElement(harness);
testCachedValue(harness);
}
/**
* Creates an empty BranchElement and checks if the getStartOffset() method
* call triggers an NPE.
*
* @param h the test harness to use
*/
private void testEmptyBranchElement(TestHarness h)
{
PlainDocument doc = new PlainDocument();
AbstractDocument.BranchElement b =
doc.new BranchElement(null, null);
try
{
b.getStartOffset();
h.fail("emptyBranchElement");
}
catch (NullPointerException ex)
{
h.check(true);
}
}
/**
* Creates a BranchElement with one LeafElement child and checks if the
* getStartOffset() method call returns the correct start offset.
*
* @param h the test harness to use
*/
private void testOneLeafElement(TestHarness h)
{
PlainDocument doc = new PlainDocument();
AbstractDocument.BranchElement b =
doc.new BranchElement(null, null);
AbstractDocument.LeafElement l = doc.new LeafElement(b, null, 10, 20);
b.replace(0, 0, new Element[] { l });
h.check(b.getStartOffset(), 10);
}
/**
* This first creates a BranchElement with one child and calls
* getStartOffset(). Then it removes the child and calls startOffset() again
* and checks if the BranchElement still returns a valid value. The
* BranchElement should remember the value and don't throw an NPE here.
*
* @param h the test harness to use
*/
private void testCachedValue(TestHarness h)
{
PlainDocument doc = new PlainDocument();
AbstractDocument.BranchElement b =
doc.new BranchElement(null, null);
AbstractDocument.LeafElement l = doc.new LeafElement(b, null, 10, 20);
b.replace(0, 0, new Element[] { l });
h.check(b.getStartOffset(), 10);
b.replace(0, 1, new Element[0]);
h.check(b.getElementCount(), 0);
h.check(b.getStartOffset(), 10);
}
}