FYI: New JLabel test

["Roman Kennke" <kennke at aicas dot com>]

This test checks of setText should call repaint and/or revalidate in
JLabel.

2005-10-18  Roman Kennke  <kennke@aicas.com>

        * gnu/testlet/javax/swing/JLabel/TestLabel.java:
        New auxiliary helper class.
        * gnu/testlet/javax/swing/JLabel/setText.java:
        New test.


/Roman

// Tags: JDK1.2
// Uses: TestLabel

// Copyright (C) 2005 Roman Kennke <kennke@aicas.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.javax.swing.JLabel;

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

public class setText implements Testlet
{

  public void test(TestHarness harness)
  {
    testRepaint(harness);
    testRevalidate(harness);
  }

  /**
   * Tests if setText triggers a repaint. setText should trigger a
   * repaint() call whenever the actual value of the property changes.
   *
   * @param harness the test harness to use
   */
  private void testRepaint(TestHarness harness)
  {
    TestLabel c = new TestLabel();
    // Set to null, so that we know the state.
    c.setText(null);
    c.repaintCalled = false;
    // Change state and check if repaint is called.
    c.setText("Test1");
    harness.check(c.repaintCalled, true);
    // Don't change state.
    c.repaintCalled = false;
    c.setText("Test1");
    harness.check(c.repaintCalled, false);
    // Change state and check if repaint is called.
    c.repaintCalled = false;
    c.setText("Text2");
    harness.check(c.repaintCalled, true);
    // Don't change state.
    c.repaintCalled = false;
    c.setText("Text2");
    harness.check(c.repaintCalled, false);
  }

  /**
   * Tests if setEnabled triggers a revalidate.
   *
   * @param harness the test harness to use
   */
  private void testRevalidate(TestHarness harness)
  {
    TestLabel c = new TestLabel();
    // Set to false, so that we know the state.
    c.setText(null);
    c.revalidateCalled = false;
    // Change state and check if repaint is called.
    c.setText("Test1");
    harness.check(c.revalidateCalled, true);
    // Don't change state.
    c.revalidateCalled = false;
    c.setText("Test1");
    harness.check(c.revalidateCalled, false);
    // Change state and check if repaint is called.
    c.revalidateCalled = false;
    c.setText("Test2");
    harness.check(c.revalidateCalled, true);
    // Don't change state.
    c.revalidateCalled = false;
    c.setText("Test2");
    harness.check(c.revalidateCalled, false);
  }

}

// Tags: not-a-test

// Copyright (C) 2005 Roman Kennke <kennke@aicas.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.javax.swing.JLabel;

import javax.swing.JLabel;

/**
 * A subclass of {@link javax.swing.JLabel} that enables to check if
 * certain methods (like repaint() or revalidate()) are called correctly.
 *
 * @author Roman Kennke (kennke@aicas.com)
 */
class TestLabel extends JLabel
{
  /**
   * A flag indicating if repaint() has been called.
   */
  boolean repaintCalled;

  /**
   * A flag indicating if revalidate() has been called.
   */
  boolean revalidateCalled;

  /**
   * Performs the superclass repaint and sets the repaintCalled flag to true.
   */
  public void repaint()
  {
    repaintCalled = true;
    super.repaint();
  }

  /**
   * Performs the superclass revalidate and sets the revalidateCalled flag
   * to true.
   */
  public void revalidate()
  {
    revalidateCalled = true;
    super.revalidate();
  }
}