8353475: Open source two Swing DefaultCaret tests

Backport-of: e08441c03352543f800aef166afabec1dacaf4bf

Author: GoeLin

test/jdk/javax/swing/text/DefaultCaret/PaintTest.java

@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 1999, 2025, 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 4193062
+ * @summary Tests that when a TextField first gets focus, if modelToView fails
+ *          (null is returned) that the caret will start to blink again.
+ * @library /java/awt/regtesthelpers
+ * @build PassFailJFrame
+ * @run main/manual PaintTest
+*/
+
+import java.awt.FlowLayout;
+import javax.swing.JFrame;
+import javax.swing.JTextField;
+
+public class PaintTest {
+
+    static final String INSTRUCTIONS = """
+         If the test window displays with the text caret flashing (do wait at
+         least several second for it to start) the test PASSES, otherwise it FAILS.
+    """;
+
+    public static void main(String[] args) throws Exception {
+        PassFailJFrame.builder()
+            .title("PaintTest Test Instructions")
+            .instructions(INSTRUCTIONS)
+            .columns(50)
+            .testUI(PaintTest::createUI)
+            .build()
+            .awaitAndCheck();
+    }
+
+    static JFrame createUI() {
+        JFrame frame = new JFrame("PaintTest");
+        JTextField tf = new JTextField(20);
+        frame.setLayout(new FlowLayout());
+        frame.add(tf);
+        frame.setSize(300, 300);
+        return frame;
+    }
+}

test/jdk/javax/swing/text/DefaultCaret/bug4785160.java

@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2003, 2025, 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 4785160
+ * @summary Test that the cursor is always visible when typing in JTextArea with JScrollBar
+ * @library /java/awt/regtesthelpers
+ * @build PassFailJFrame
+ * @run main/manual bug4785160
+*/
+
+import javax.swing.JFrame;
+import javax.swing.JScrollPane;
+import javax.swing.JTextArea;
+
+public class bug4785160 {
+
+    static final String INSTRUCTIONS = """
+         Ensure that the horizontal scrollbar is visible in the JTextArea.
+         If necessary, reduce the width of the window so that the scrollbar becomes visible.
+         Scroll all the way to the right so the end of the line is visible.
+         If necessary, move the text caret in the text area to the end of line.
+         The test PASSES if the caret is visible at the end of the line.
+         The test FAILS if the caret disappears when moved to the end of the line.
+    """;
+
+    public static void main(String[] args) throws Exception {
+        PassFailJFrame.builder()
+            .title("bug4785160 Test Instructions")
+            .instructions(INSTRUCTIONS)
+            .columns(50)
+            .testUI(bug4785160::createUI)
+            .build()
+            .awaitAndCheck();
+    }
+
+    static JFrame createUI() {
+        JFrame frame = new JFrame("bug4785160");
+        JTextArea area = new JTextArea();
+        String s = "";
+        for (int i = 0; i < 80; i++) {
+             s += "m";
+        }
+        area.setText(s);
+        area.getCaret().setDot(area.getText().length() + 1);
+        frame.add(new JScrollPane(area));
+        frame.setSize(300, 300);
+        return frame;
+    }
+}