8051591: Test javax/swing/JTabbedPane/8007563/Test8007563.java fails

Reviewed-by: honkar, dnguyen, psadhukhan

test/jdk/ProblemList.txt

@@ -677,7 +677,6 @@ javax/swing/AbstractButton/6711682/bug6711682.java 8060765 windows-all,macosx-al
 javax/swing/JFileChooser/6396844/TwentyThousandTest.java 8198003 generic-all
 javax/swing/JFileChooser/8194044/FileSystemRootTest.java 8327236 windows-all
 javax/swing/JPopupMenu/6800513/bug6800513.java 7184956 macosx-all
-javax/swing/JTabbedPane/8007563/Test8007563.java 8051591 generic-all
 javax/swing/JTabbedPane/4624207/bug4624207.java 8064922 macosx-all
 javax/swing/SwingUtilities/TestBadBreak/TestBadBreak.java 8160720 generic-all
 javax/swing/JFileChooser/6798062/bug6798062.java 8146446 windows-all

test/jdk/javax/swing/JTabbedPane/TestJTabbedPaneBackgroundColor.java

@@ -0,0 +1,137 @@
+/*
+ * Copyright (c) 2015, 2024, 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.Color;
+import java.awt.Dimension;
+import java.awt.Point;
+import java.awt.Robot;
+import java.util.ArrayList;
+
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+import javax.swing.JTabbedPane;
+import javax.swing.SwingUtilities;
+import javax.swing.UIManager;
+import javax.swing.UnsupportedLookAndFeelException;
+
+/*
+ * @test
+ * @key headful
+ * @bug 8007563
+ * @summary Tests JTabbedPane background
+ */
+
+public class TestJTabbedPaneBackgroundColor {
+    private static ArrayList<String> lafList = new ArrayList<>();
+    private static JFrame frame;
+    private static JTabbedPane pane;
+    private static Robot robot;
+    private static volatile Dimension dim;
+    private static volatile Point loc;
+
+    public static void main(String[] args) throws Exception {
+        robot = new Robot();
+
+        for (UIManager.LookAndFeelInfo laf :
+                UIManager.getInstalledLookAndFeels()) {
+            System.out.println("Testing: " + laf.getName());
+            setLookAndFeel(laf);
+
+            try {
+                SwingUtilities.invokeAndWait(TestJTabbedPaneBackgroundColor::createAndShowUI);
+                robot.waitForIdle();
+                robot.delay(500);
+
+                SwingUtilities.invokeAndWait(() -> {
+                    loc = pane.getLocationOnScreen();
+                    dim = pane.getSize();
+                });
+
+                loc = new Point(loc.x + dim.width - 2, loc.y + 2);
+                doTesting(loc, laf);
+
+                if (!pane.isOpaque()) {
+                    pane.setOpaque(true);
+                    pane.repaint();
+                }
+                robot.waitForIdle();
+                robot.delay(500);
+
+                doTesting(loc, laf);
+
+            } finally {
+                SwingUtilities.invokeAndWait(() -> {
+                    if (frame != null) {
+                        frame.dispose();
+                    }
+                });
+            }
+        }
+        if (!lafList.isEmpty()) {
+            throw new RuntimeException(lafList.toString());
+        }
+    }
+
+    private static void setLookAndFeel(UIManager.LookAndFeelInfo laf) {
+        try {
+            UIManager.setLookAndFeel(laf.getClassName());
+        } catch (UnsupportedLookAndFeelException ignored) {
+            System.out.println("Unsupported LAF: " + laf.getClassName());
+        } catch (ClassNotFoundException | InstantiationException
+                 | IllegalAccessException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    private static void createAndShowUI() {
+        pane = new JTabbedPane();
+        pane.setOpaque(false);
+        pane.setBackground(Color.RED);
+        for (int i = 0; i < 3; i++) {
+            pane.addTab("Tab " + i, new JLabel("Content area " + i));
+        }
+        frame = new JFrame("Test Background Color");
+        frame.getContentPane().setBackground(Color.BLUE);
+        frame.add(pane);
+        frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
+        frame.setSize(400, 200);
+        frame.setLocationRelativeTo(null);
+        frame.setVisible(true);
+    }
+
+    private static void doTesting(Point p, UIManager.LookAndFeelInfo laf) {
+        boolean isOpaque = pane.isOpaque();
+        Color actual = robot.getPixelColor(p.x, p.y);
+        Color expected = isOpaque
+                ? pane.getBackground()
+                : frame.getContentPane().getBackground();
+
+        if (!expected.equals(actual)) {
+            addOpaqueError(laf.getName(), isOpaque);
+        }
+    }
+
+    private static void addOpaqueError(String lafName, boolean opaque) {
+        lafList.add(lafName + " opaque=" + opaque);
+    }
+}