8282778: Create a regression test for JDK-4699544

Reviewed-by: kizune, serb

test/jdk/javax/accessibility/JRootPaneAccessiblAtTest.java

@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2022, 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 4699544
+ * @key headful
+ * @summary AccessibleJRootPane always returns null for getAccessibleAt
+ * @run main JRootPaneAccessiblAtTest
+ */
+import javax.accessibility.Accessible;
+import javax.accessibility.AccessibleComponent;
+import javax.swing.JFrame;
+import javax.swing.JRootPane;
+import javax.swing.SwingUtilities;
+
+public class JRootPaneAccessiblAtTest extends JFrame {
+
+    public JRootPaneAccessiblAtTest() {
+        JRootPane rootPane = getRootPane();
+        AccessibleComponent accessibleComponent =
+            rootPane.getAccessibleContext().getAccessibleComponent();
+        Accessible accessible = accessibleComponent
+            .getAccessibleAt(accessibleComponent.getLocation());
+        if (accessible == null) {
+            throw new RuntimeException("Test Failed: AccessibleJRootPane "
+                + "always returns null for getAccessibleAt()");
+        } else {
+            System.out.println("Test Passed: AccessibilityJRootPane returns "
+                + accessible + " for getAccessibleAt()");
+        }
+    }
+
+    public static void main(String args[]) throws Exception {
+        SwingUtilities.invokeAndWait(() -> new JRootPaneAccessiblAtTest());
+    }
+}
+