test/java/awt/Window/ChangeWindowResizabilty/ChangeWindowResizabiltyTest.java

@@ -19,11 +19,13 @@
  * 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.
  */
 
-/* @bug      8166897
+/*
+   @test
+   @bug      8166897
    @summary  Some font overlap in the Optionpane dialog.
    @run      main ChangeWindowResizabiltyTest
 */
 
 import java.awt.*;

@@ -31,34 +33,67 @@
 public class ChangeWindowResizabiltyTest {
     public static void main(String[] args) throws Exception {
         Robot robot = new Robot();
         for(int i = 0; i < 10; i++) {
             Dialog dialog = new Dialog((Frame) null);
+            dialog.setLocation(100, 100);
             Component panel = new Panel();
             panel.setPreferredSize(new Dimension(200, 100));
             dialog.add(panel);
             dialog.pack();
             dialog.setVisible(true);
+            robot.waitForIdle();
+            robot.delay(200);
+
+            Point frameLoc = dialog.getLocationOnScreen();
+            Point contentLoc = panel.getLocationOnScreen();
+
+            System.out.println("Decor location " + frameLoc);
+            System.out.println("Content location " + contentLoc);
 
             dialog.setResizable(false);
             robot.waitForIdle();
             robot.delay(200);
 
-            System.out.println(panel.getLocationOnScreen());
-            System.out.println(dialog.getLocationOnScreen());
+            Point l = dialog.getLocationOnScreen();
+            if (!l.equals(frameLoc)) {
+                dialog.dispose();
+                throw new RuntimeException("Decorated frame location moved " +
+                        "after setResizable(false)" + l);
+            }
+
+            l = panel.getLocationOnScreen();
+            if (!l.equals(contentLoc)) {
+                dialog.dispose();
+                throw new RuntimeException("Content location moved after " +
+                        "setResizable(false)" + l);
+            }
+
             if (panel.getLocationOnScreen().y <
                        dialog.getLocationOnScreen().y + dialog.getInsets().top) {
                 dialog.dispose();
                 throw new RuntimeException(
                         "Wrong content position after setResizable(false)");
             }
 
             dialog.setResizable(true);
             robot.waitForIdle();
             robot.delay(200);
-            System.out.println(panel.getLocationOnScreen());
-            System.out.println(dialog.getLocationOnScreen());
+
+            l = dialog.getLocationOnScreen();
+            if (!l.equals(frameLoc)) {
+                dialog.dispose();
+                throw new RuntimeException("Decorated frame location moved " +
+                        "after setResizable(true)" + l);
+            }
+
+            l = panel.getLocationOnScreen();
+            if (!l.equals(contentLoc)) {
+                dialog.dispose();
+                throw new RuntimeException("Content location moved after " +
+                        "setResizable(true)" + l);
+            }
             if (panel.getLocationOnScreen().y <
                     dialog.getLocationOnScreen().y + dialog.getInsets().top) {
                 dialog.dispose();
                 throw new RuntimeException(
                         "Wrong content position after setResizable(true)");