/*
* Copyright 2002-2012 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.util.xml;
import org.junit.Before;
import org.junit.Test;
import org.w3c.dom.Document;
import org.xml.sax.InputSource;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.stream.XMLEventReader;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamReader;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMResult;
import javax.xml.transform.stream.StreamResult;
import java.io.StringReader;
import java.io.StringWriter;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertThat;
import static org.xmlunit.matchers.CompareMatcher.isSimilarTo;
/**
* @author Arjen Poutsma
*/
public class StaxSourceTests {
private static final String XML = "<root xmlns='namespace'><child/></root>";
private Transformer transformer;
private XMLInputFactory inputFactory;
private DocumentBuilder documentBuilder;
@Before
public void setUp() throws Exception {
TransformerFactory transformerFactory = TransformerFactory.newInstance();
transformer = transformerFactory.newTransformer();
inputFactory = XMLInputFactory.newInstance();
DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
documentBuilderFactory.setNamespaceAware(true);
documentBuilder = documentBuilderFactory.newDocumentBuilder();
}
@Test
public void streamReaderSourceToStreamResult() throws Exception {
XMLStreamReader streamReader = inputFactory.createXMLStreamReader(new StringReader(XML));
StaxSource source = new StaxSource(streamReader);
assertEquals("Invalid streamReader returned", streamReader, source.getXMLStreamReader());
assertNull("EventReader returned", source.getXMLEventReader());
StringWriter writer = new StringWriter();
transformer.transform(source, new StreamResult(writer));
assertThat("Invalid result", writer.toString(), isSimilarTo(XML));
}
@Test
public void streamReaderSourceToDOMResult() throws Exception {
XMLStreamReader streamReader = inputFactory.createXMLStreamReader(new StringReader(XML));
StaxSource source = new StaxSource(streamReader);
assertEquals("Invalid streamReader returned", streamReader, source.getXMLStreamReader());
assertNull("EventReader returned", source.getXMLEventReader());
Document expected = documentBuilder.parse(new InputSource(new StringReader(XML)));
Document result = documentBuilder.newDocument();
transformer.transform(source, new DOMResult(result));
assertThat("Invalid result", result, isSimilarTo(expected));
}
@Test
public void eventReaderSourceToStreamResult() throws Exception {
XMLEventReader eventReader = inputFactory.createXMLEventReader(new StringReader(XML));
StaxSource source = new StaxSource(eventReader);
assertEquals("Invalid eventReader returned", eventReader, source.getXMLEventReader());
assertNull("StreamReader returned", source.getXMLStreamReader());
StringWriter writer = new StringWriter();
transformer.transform(source, new StreamResult(writer));
assertThat("Invalid result", writer.toString(), isSimilarTo(XML));
}
@Test
public void eventReaderSourceToDOMResult() throws Exception {
XMLEventReader eventReader = inputFactory.createXMLEventReader(new StringReader(XML));
StaxSource source = new StaxSource(eventReader);
assertEquals("Invalid eventReader returned", eventReader, source.getXMLEventReader());
assertNull("StreamReader returned", source.getXMLStreamReader());
Document expected = documentBuilder.parse(new InputSource(new StringReader(XML)));
Document result = documentBuilder.newDocument();
transformer.transform(source, new DOMResult(result));
assertThat("Invalid result", result, isSimilarTo(expected));
}
}