--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jaxp/javax/xml/jaxp/unittest/stream/XMLStreamWriterTest/CustomImplTest.java	Wed Aug 28 19:02:51 2019 +0000
@@ -0,0 +1,234 @@
+/*
+ * Copyright (c) 2019, 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.
+ */
+
+package stream.XMLStreamWriterTest;
+
+import javax.xml.namespace.NamespaceContext;
+import javax.xml.stream.XMLOutputFactory;
+import javax.xml.stream.XMLStreamWriter;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.transform.stax.StAXResult;
+import org.testng.annotations.Test;
+
+/*
+ * @test
+ * @bug 8230094
+ * @run testng stream.XMLStreamWriterTest.CustomImplTest
+ * @summary Verifies custom implementation of the XMLStreamWriter.
+ */
+public class CustomImplTest {
+
+    @Test
+    public void testEventReader() throws Exception {
+        XMLOutputFactory.newFactory()
+                .createXMLEventWriter(new StAXResult(new StreamWriterFilter()));
+    }
+
+    static class StreamWriterFilter implements XMLStreamWriter
+    {
+        @Override
+        public void writeStartElement(String localName)
+                throws XMLStreamException
+        {
+        }
+
+        @Override
+        public void writeStartElement(String namespaceURI, String localName)
+                throws XMLStreamException
+        {
+        }
+
+        @Override
+        public void writeStartElement(
+                String prefix, String localName, String namespaceURI)
+                throws XMLStreamException
+        {
+        }
+
+        @Override
+        public void writeEmptyElement(String namespaceURI, String localName)
+                throws XMLStreamException
+        {
+        }
+
+        @Override
+        public void writeEmptyElement(
+                String prefix, String localName, String namespaceURI)
+                throws XMLStreamException
+        {
+        }
+
+        @Override
+        public void writeEmptyElement(String localName)
+                throws XMLStreamException
+        {
+        }
+
+        @Override
+        public void writeEndElement() throws XMLStreamException
+        {
+        }
+
+        @Override
+        public void writeEndDocument() throws XMLStreamException
+        {
+        }
+
+        @Override
+        public void close() throws XMLStreamException
+        {
+        }
+
+        @Override
+        public void flush() throws XMLStreamException
+        {
+        }
+
+        @Override
+        public void writeAttribute(String localName, String value)
+                throws XMLStreamException
+        {
+        }
+
+        @Override
+        public void writeAttribute(
+                String prefix, String namespaceURI, String localName, String value)
+                throws XMLStreamException
+        {
+        }
+
+        @Override
+        public void writeAttribute(
+                String namespaceURI, String localName, String value)
+                throws XMLStreamException
+        {
+        }
+
+        @Override
+        public void writeNamespace(String prefix, String namespaceURI)
+                throws XMLStreamException
+        {
+        }
+
+        @Override
+        public void writeDefaultNamespace(String namespaceURI)
+                throws XMLStreamException
+        {
+        }
+
+        @Override
+        public void writeComment(String data) throws XMLStreamException
+        {
+        }
+
+        @Override
+        public void writeProcessingInstruction(String target)
+                throws XMLStreamException
+        {
+        }
+
+        @Override
+        public void writeProcessingInstruction(String target, String data)
+                throws XMLStreamException
+        {
+        }
+
+        @Override
+        public void writeCData(String data) throws XMLStreamException
+        {
+        }
+
+        @Override
+        public void writeDTD(String dtd) throws XMLStreamException
+        {
+        }
+
+        @Override
+        public void writeEntityRef(String name) throws XMLStreamException
+        {
+        }
+
+        @Override
+        public void writeStartDocument() throws XMLStreamException
+        {
+        }
+
+        @Override
+        public void writeStartDocument(String version) throws XMLStreamException
+        {
+        }
+
+        @Override
+        public void writeStartDocument(String encoding, String version)
+                throws XMLStreamException
+        {
+        }
+
+        @Override
+        public void writeCharacters(String text) throws XMLStreamException
+        {
+        }
+
+        @Override
+        public void writeCharacters(char[] text, int start, int len)
+                throws XMLStreamException
+        {
+        }
+
+        @Override
+        public String getPrefix(String uri) throws XMLStreamException
+        {
+            return null;
+        }
+
+        @Override
+        public void setPrefix(String prefix, String uri)
+                throws XMLStreamException
+        {
+        }
+
+        @Override
+        public void setDefaultNamespace(String uri) throws XMLStreamException
+        {
+        }
+
+        @Override
+        public void setNamespaceContext(NamespaceContext context)
+                throws XMLStreamException
+        {
+        }
+
+        @Override
+        public NamespaceContext getNamespaceContext()
+        {
+            throw new UnsupportedOperationException();
+        }
+
+        @Override
+        public Object getProperty(String name) throws IllegalArgumentException
+        {
+            throw new UnsupportedOperationException();
+        }
+    }
+
+}