8316947: Write a test to check textArea triggers MouseEntered/MouseExited events properly

Reviewed-by: tr, honkar, aivanov

Author: Ravi Gupta

test/jdk/java/awt/event/MouseEvent/MouseEnterExitTest.java

@@ -0,0 +1,132 @@
+/*
+ * Copyright (c) 2007, 2023, 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.
+ */
+
+import java.awt.Dimension;
+import java.awt.EventQueue;
+import java.awt.FlowLayout;
+import java.awt.Frame;
+import java.awt.List;
+import java.awt.Point;
+import java.awt.Robot;
+import java.awt.TextArea;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.awt.event.MouseListener;
+
+/*
+ * @test
+ * @key headful
+ * @bug 4454304
+ * @summary On Solaris, TextArea triggers MouseEntered when the mouse is inside the component
+ * @run main MouseEnterExitTest
+ */
+public class MouseEnterExitTest {
+
+    private static Frame frame;
+
+    private volatile static boolean entered = false;
+    private volatile static boolean exited = false;
+    private volatile static boolean passed = true;
+
+    private volatile static Point compAt;
+    private volatile static Dimension compSize;
+
+    private static final MouseListener mouseListener = new MouseAdapter() {
+        @Override
+        public void mouseEntered(MouseEvent e) {
+            System.out.println(
+                "MouseEntered component " + e.getSource().getClass().getName());
+            if (entered) {
+                passed = false;
+            }
+            entered = true;
+            exited = false;
+        }
+
+        @Override
+        public void mouseExited(MouseEvent e) {
+            System.out.println(
+                "MouseExited component " + e.getSource().getClass().getName());
+            if (exited) {
+                passed = false;
+            }
+            entered = false;
+            exited = true;
+        }
+    };
+
+    private static void initializeGUI() {
+        frame = new Frame("MouseEnterExitTest");
+        frame.setLayout(new FlowLayout());
+        List list = new List(4);
+        for (int i = 0; i < 10; i++) {
+            list.add("item " + i);
+        }
+        list.addMouseListener(mouseListener);
+        frame.add(list);
+
+        TextArea textArea = new TextArea("TextArea", 10, 20);
+        textArea.addMouseListener(mouseListener);
+        frame.add(textArea);
+
+        frame.pack();
+        frame.setLocationRelativeTo(null);
+        frame.setVisible(true);
+    }
+
+    public static void main(String[] args) throws Exception {
+        try {
+            Robot robot = new Robot();
+            robot.setAutoDelay(100);
+            robot.setAutoWaitForIdle(true);
+
+            EventQueue.invokeAndWait(MouseEnterExitTest::initializeGUI);
+            robot.waitForIdle();
+
+            EventQueue.invokeAndWait(() -> {
+                compAt = frame.getLocationOnScreen();
+                compSize = frame.getSize();
+            });
+            compAt.y += compSize.getHeight() / 2;
+            int xr = compAt.x + compSize.width + 1;
+            for (int i = compAt.x - 5; (i < xr) && passed; i++) {
+                robot.mouseMove(i, compAt.y);
+            }
+
+            if (!passed || entered || !exited) {
+                throw new RuntimeException(
+                    "MouseEnterExitTest FAILED. MouseEntered/MouseExited "
+                        + "not properly triggered. Please see the log");
+            }
+            System.out.println("Test PASSED");
+        } finally {
+            EventQueue.invokeAndWait(MouseEnterExitTest::disposeFrame);
+        }
+    }
+
+    private static void disposeFrame() {
+        if (frame != null) {
+            frame.dispose();
+        }
+    }
+}