diff -r f02cad8a9114 -r 5a872c1edd4f jdk/test/javax/imageio/plugins/png/MergeStdCommentTest.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/javax/imageio/plugins/png/MergeStdCommentTest.java	Fri Dec 12 17:38:14 2008 +0300
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2008 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/**
+ * @test
+ * @bug 5106550
+ * @summary Merge a comment using the standard metdata format
+ *          and only a minimal set of attributes
+ */
+
+import java.awt.image.BufferedImage;
+import javax.imageio.ImageIO;
+import javax.imageio.ImageTypeSpecifier;
+import javax.imageio.ImageWriter;
+import javax.imageio.metadata.IIOMetadata;
+import org.w3c.dom.DOMImplementation;
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.w3c.dom.bootstrap.DOMImplementationRegistry;
+
+public class MergeStdCommentTest {
+
+    public static void main(String[] args) throws Exception {
+        String format = "javax_imageio_1.0";
+        BufferedImage img =
+            new BufferedImage(16, 16, BufferedImage.TYPE_INT_RGB);
+        ImageWriter iw = ImageIO.getImageWritersByMIMEType("image/png").next();
+        IIOMetadata meta =
+            iw.getDefaultImageMetadata(new ImageTypeSpecifier(img), null);
+        DOMImplementationRegistry registry;
+        registry = DOMImplementationRegistry.newInstance();
+        DOMImplementation impl = registry.getDOMImplementation("XML 3.0");
+        Document doc = impl.createDocument(null, format, null);
+        Element root, text, entry;
+        root = doc.getDocumentElement();
+        root.appendChild(text = doc.createElement("Text"));
+        text.appendChild(entry = doc.createElement("TextEntry"));
+        // keyword isn't #REQUIRED by the standard metadata format.
+        // However, it is required by the PNG format, so we include it here.
+        entry.setAttribute("keyword", "Comment");
+        entry.setAttribute("value", "Some demo comment");
+        meta.mergeTree(format, root);
+    }
+}