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diff --git a/gnu/testlet/java/awt/Frame/isDisplayable6.java b/gnu/testlet/java/awt/Frame/isDisplayable6.java
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+++ b/gnu/testlet/java/awt/Frame/isDisplayable6.java
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+// Tags: GUI JDK1.0
+
+// Copyright (C) 2005, 2011 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.Frame;
+
+import gnu.testlet.TestHarness;
+import gnu.testlet.Testlet;
+
+import java.awt.*;
+
+/**
+ * Tests that adding a not-visible Component to an already-displayable
+ * Frame causes the Component to become displayable.
+ */
+public class isDisplayable6 implements Testlet
+{
+  public void test (TestHarness harness)
+  {
+    Frame f = new Frame ();
+    Button b = new Button ();
+    Robot r = harness.createRobot ();
+
+    // Hide the button.
+    b.setVisible (false);
+
+    r.waitForIdle ();
+
+    harness.checkPoint ("before showing");
+    harness.check (f.getPeer(), null);
+    harness.check (b.getPeer(), null);
+    harness.check (f.isDisplayable (), false);
+    harness.check (b.isDisplayable (), false);
+
+    f.show ();
+
+    r.waitForIdle ();
+
+    harness.checkPoint ("after showing frame");
+    harness.check (f.getPeer() != null);
+    harness.check (b.getPeer(), null);
+    harness.check (f.isDisplayable (), true);
+    harness.check (b.isDisplayable (), false);
+
+    // Check if adding the hidden button causes it to become
+    // displayable.
+    f.add(b);
+
+    // Check if the button is made visible when it is added.
+    harness.check (!b.isVisible ());
+
+    r.waitForIdle ();
+
+    harness.checkPoint ("after adding button to frame");
+    harness.check (f.getPeer() != null);
+    harness.check (b.getPeer() != null);
+    harness.check (b.getParent(), f);
+    harness.check (f.isDisplayable (), true);
+    harness.check (b.isDisplayable (), true);
+
+    // time to clean up the frame from desktop
+    f.dispose();
+  }
+}