6757986: javax/swing/JInternalFrame/5066752/bug5066752.java needs correction

Reviewed-by: serb, alexsch

test/javax/swing/JInternalFrame/5066752/bug5066752.java

+/*
+ * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+/*
+  @test
+  @bug 5066752
+  @summary  Transparent JDesktopPane impossible because isOpaque() returns true
+  @author mb50250: area=JDesktopPane
+  @library ../../regtesthelpers
+  @build Util
+  @run main bug5066752
+*/
+
+import java.awt.*;
+import javax.swing.*;
+import sun.awt.*;
+
+public class bug5066752
+{
+    private static JFrame frame;
+
+    public static void main(String[] args) throws Exception {
+        SunToolkit tk = (SunToolkit)Toolkit.getDefaultToolkit();
+        Robot r = new Robot();
+        SwingUtilities.invokeAndWait(new Runnable() {
+            public void run() {
+                createAndShowGUI();
+            }
+        });
+        tk.realSync();
+
+        r.delay(600);
+
+        Point p = Util.getCenterPoint(frame);
+        Color color =  r.getPixelColor((int) p.getX(), (int) p.getY());
+        if (!color.equals(Color.RED)) {
+            throw new Exception("Test failed: JDesktopPane isn't transparent. Expected color is (red color): " + Color.RED + ", actual color is: " + color);
+        }
+    }
+
+    private static void createAndShowGUI() {
+        frame = new JFrame();
+
+        frame.setLayout(new BorderLayout());
+        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+
+        JPanel panel = new JPanel();
+        panel.setLayout(new BorderLayout());
+        panel.setBackground(Color.RED);
+        frame.add(panel, BorderLayout.CENTER);
+
+        JDesktopPane dp = new JDesktopPane();
+        dp.setOpaque(false);
+        panel.add(dp, BorderLayout.CENTER);
+
+        frame.setBounds(200, 200, 300, 200);
+        frame.setVisible(true);
+    }
+}