8297296: java/awt/Mouse/EnterExitEvents/DragWindowTest.java fails with "No MouseReleased event on label!"

Reviewed-by: goetz
Backport-of: 0ed6d0b456e58e4122b97c3d12faabada0d8c530

Author: amosshi

test/jdk/ProblemList.txt

@@ -386,7 +386,6 @@ java/awt/Modal/MultipleDialogs/MultipleDialogs3Test.java 8198665 macosx-all
 java/awt/Modal/MultipleDialogs/MultipleDialogs4Test.java 8198665 macosx-all
 java/awt/Modal/MultipleDialogs/MultipleDialogs5Test.java 8198665 macosx-all
 java/awt/Mouse/EnterExitEvents/DragWindowOutOfFrameTest.java 8177326 macosx-all
-java/awt/Mouse/EnterExitEvents/DragWindowTest.java 8023562 macosx-all
 java/awt/Mouse/EnterExitEvents/ResizingFrameTest.java 8005021 macosx-all
 java/awt/Mouse/EnterExitEvents/FullscreenEnterEventTest.java 8051455 macosx-all
 java/awt/Mouse/MouseModifiersUnitTest/MouseModifiersUnitTest_Standard.java 7124407 macosx-all

test/jdk/java/awt/Mouse/EnterExitEvents/DragWindowTest.java

@@ -34,11 +34,23 @@
  * @run main DragWindowTest
  */
 
-import java.awt.*;
-import java.awt.event.*;
-import javax.swing.*;
-
-import java.util.concurrent.*;
+import java.awt.BorderLayout;
+import java.awt.Component;
+import java.awt.Rectangle;
+import java.awt.Robot;
+import java.awt.Panel;
+import java.awt.Point;
+import java.awt.Window;
+import java.awt.event.InputEvent;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+import javax.swing.JButton;
+import javax.swing.JPanel;
+import javax.swing.SwingUtilities;
+
+import java.util.concurrent.Callable;
 
 import test.java.awt.regtesthelpers.Util;
 
@@ -55,7 +67,7 @@ public class DragWindowTest {
     public static void main(String[] args) throws Exception {
 
         Robot robot = new Robot();
-        robot.setAutoDelay(50);
+        robot.setAutoDelay(100);
 
         SwingUtilities.invokeAndWait(new Runnable() {
 
@@ -65,6 +77,7 @@ public void run() {
             }
         });
 
+        robot.delay(250);
         robot.waitForIdle();
 
         Point pointToClick = Util.invokeOnEDT(new Callable<Point>() {
@@ -134,6 +147,7 @@ private static void createAndShowGUI() {
         panel.add(button, BorderLayout.CENTER);
 
         frame.getContentPane().add(panel);
+        frame.setLocationRelativeTo(null);
         frame.setVisible(true);
 
     }