/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with this
* work for additional information regarding copyright ownership. The ASF
* licenses this file to you 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.apache.cocoon.stax.stress.test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Map;
import javax.xml.stream.XMLEventFactory;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.events.Attribute;
import javax.xml.stream.events.XMLEvent;
import org.apache.cocoon.pipeline.NonCachingPipeline;
import org.apache.cocoon.pipeline.Pipeline;
import org.apache.cocoon.pipeline.component.Consumer;
import org.apache.cocoon.stax.StAXPipelineComponent;
import org.apache.cocoon.stax.StAXProducer;
import org.apache.cocoon.stax.component.XMLGenerator;
import org.apache.cocoon.stax.component.XMLSerializer;
import org.apache.cocoon.stax.stress.src.EmitElementTransformer;
import org.custommonkey.xmlunit.Diff;
import org.custommonkey.xmlunit.XMLUnit;
import org.junit.Test;
/**
* Contains unit tests for the emit transformer.<br>
*
* It emits a number of configurable elements at a specific point of the document.
*
*/
public class EmitTransformerTest {
/**
* Shows a transformer emitting new elements at a point of the document step by step.
*
* @exception Exception Is thrown if an error occurs loading the files or in the pipeline
* itself.
*/
@Test
public void testEmitTransformerBySteps() throws Exception {
EmitElementTransformer transformer = new EmitElementTransformer("parent", new ArrayList<Attribute>(), "child",
1);
transformer.setParent(new StAXProducer() {
private final XMLEventFactory eventFactory = XMLEventFactory.newInstance();
private boolean startEmitted = false;
public boolean hasNext() {
return true;
}
public XMLEvent nextEvent() throws XMLStreamException {
if (this.startEmitted) {
return this.eventFactory.createEndElement("", "", "parent");
}
this.startEmitted = true;
return this.eventFactory.createStartElement("", "", "parent");
}
public XMLEvent peek() throws XMLStreamException {
throw new RuntimeException("not impl");
}
public void setConsumer(Consumer consumer) {
}
public void finish() {
}
public void setConfiguration(Map<String, ? extends Object> configuration) {
}
public void setup(Map<String, Object> parameters) {
}
});
// "parent" start-tag
assertTrue(transformer.hasNext());
XMLEvent event = transformer.nextEvent();
assertTrue(event.isStartElement());
assertEquals(event.asStartElement().getName().getLocalPart(), "parent");
// "child" start-tag
assertTrue(transformer.hasNext());
event = transformer.nextEvent();
assertTrue(event.isStartElement());
assertEquals(event.asStartElement().getName().getLocalPart(), "child");
// "child" end-tag
assertTrue(transformer.hasNext());
event = transformer.nextEvent();
assertTrue(event.isEndElement());
assertEquals(event.asEndElement().getName().getLocalPart(), "child");
// "element" end-tag
assertTrue(transformer.hasNext());
event = transformer.nextEvent();
assertTrue(event.isEndElement());
assertEquals(event.asEndElement().getName().getLocalPart(), "parent");
}
/**
* Shows a transformer emitting new elements at a point of the document included in a pipeline.
*
* @exception Exception Is thrown if an error occurs loading the files or in the pipeline
* itself.
*/
@Test
public void testEmitTransformer() throws Exception {
ByteArrayOutputStream out = new ByteArrayOutputStream();
InputStream in = new ByteArrayInputStream("<root/>".getBytes());
Pipeline<StAXPipelineComponent> pipe = new NonCachingPipeline<StAXPipelineComponent>();
pipe.addComponent(new XMLGenerator(in));
pipe.addComponent(new EmitElementTransformer("root", new ArrayList<Attribute>(), "element", 5));
pipe.addComponent(new XMLSerializer());
pipe.setup(out);
pipe.execute();
String created = new String(out.toByteArray());
out.close();
StringBuffer correctOne = new StringBuffer("<root>");
for (int i = 0; i < 5; i++) {
correctOne.append("<element/>");
}
correctOne.append("</root>");
XMLUnit.setIgnoreWhitespace(true);
Diff myDiff = new Diff(correctOne.toString(), created);
assertTrue("pieces of XML are similar " + myDiff, myDiff.similar());
}
}