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diff --git a/gnu/testlet/java/awt/Component/invalidate.java b/gnu/testlet/java/awt/Component/invalidate.java
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+// Tags: GUI JDK1.2
+
+// Copyright (C) 2005 Red Hat
+
+// 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, 59 Temple Place - Suite 330,
+// Boston, MA 02111-1307, USA.
+
+package gnu.testlet.java.awt.Component;
+
+import gnu.testlet.TestHarness;
+import gnu.testlet.Testlet;
+
+import java.awt.*;
+
+/**
+ * The method invalidate should be automatically called in
+ * response to several property changes such as size and location.
+ * This is checked here.
+ *
+ * @author Roman Kennke (roman@ontographics.com)
+ */
+public class invalidate implements Testlet
+{
+
+  /**
+   * Non abstract subclass of Component to allow instatiation and
+   * test.
+   */
+  public class TestComponent extends Component
+  {
+
+    /**
+     * If revalidate has been called or not.
+     */
+    boolean invalidated;
+
+    /**
+     *  Override this method to check if revalidate has been called.
+     */
+    public void invalidate()
+    {
+      invalidated = true;
+      super.invalidate();
+    }
+  }
+
+  /**
+   * Subclass of Container to allow  test.
+   */
+  class TestContainer extends Container
+  {
+    boolean invalidated;
+
+    /**
+     *  Override this method to check if revalidate has been called.
+     */
+    public void invalidate()
+    {
+      invalidated = true;
+      super.invalidate();
+    }
+  }
+  
+  /**
+   * Subclass of Component to allow  test.
+   */
+  public class myComponent
+      extends Component
+  {
+  }
+
+  public void test (TestHarness harness)
+  {
+    test1(harness);
+    test2(harness);
+    testInvalidateInvalidComponent(harness);
+  }
+
+  private void test1(TestHarness harness)
+  {
+    // prepare test component
+    TestComponent comp = new TestComponent();
+    Frame frame = new Frame();
+    frame.add(comp);
+    frame.setVisible(true);
+
+    // change size and check if invalidate has been called
+    comp.invalidated = false;
+    comp.setSize(100, 200);
+    harness.check(comp.invalidated, true);
+
+    // change size and check if invalidate has been called
+    comp.invalidated = false;
+    comp.setSize(new Dimension(101, 201));
+    harness.check(comp.invalidated, true);
+
+    // change size and check if invalidate has been called
+    comp.invalidated = false;
+    comp.resize(102, 202);
+    harness.check(comp.invalidated, true);
+
+    frame.dispose();
+  }
+  
+  private void test2(TestHarness harness)
+  {
+    myComponent c = new myComponent();
+    harness.check(c.isPreferredSizeSet(), false);
+    
+    c.setPreferredSize(new Dimension(400, 500));
+    Dimension prefSizeOld = c.getPreferredSize();
+    harness.check(c.isPreferredSizeSet(), true);
+    
+    c.invalidate();
+    harness.check(c.isPreferredSizeSet(), true);
+    Dimension prefSizeNew = c.getPreferredSize();
+    harness.check(prefSizeOld != prefSizeNew);
+    harness.check(prefSizeOld.equals(prefSizeNew));
+  }
+
+  private void testInvalidateInvalidComponent(TestHarness harness)
+  {
+    harness.checkPoint("invalidateInvalidComponent");
+    Frame f = new Frame();
+    TestContainer c1 = new TestContainer();
+    TestComponent c2 = new TestComponent();
+    c1.add(c2);
+    f.add(c1);
+    f.setSize(100, 100);
+    f.setVisible(true);
+    c1.validate();
+    c2.validate();
+    harness.check(c1.isValid(), true);
+    harness.check(c1.isValid(), true);
+    c1.invalidated = false;
+    c2.invalidated = false;
+    // This should invalidate both c1 and c2.
+    c2.invalidate();
+    harness.check(c1.invalidated, true);
+    harness.check(c2.invalidated, true);
+
+    // Now both components are invalid. Another call to invalidate() on c2
+    // should not invalidate c1, since it's already invalid.
+    c1.invalidated = false;
+    c2.invalidated = false;
+    // This should invalidate both c1 and c2.
+    c2.invalidate();
+    harness.check(c1.invalidated, false);
+    harness.check(c2.invalidated, true);
+    f.dispose();
+  }
+
+}