testing/axiom-testsuite/src/main/java/org/apache/axiom/ts/om/element/TestSerializeAndConsumeConsumed.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
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 * 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
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 * Unless required by applicable law or agreed to in writing,
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package org.apache.axiom.ts.om.element;

import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.XMLStreamWriter;

import org.apache.axiom.core.stream.stax.StAX;
import org.apache.axiom.om.NodeUnavailableException;
import org.apache.axiom.om.OMContainer;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.OMMetaFactory;
import org.apache.axiom.om.OMXMLBuilderFactory;
import org.apache.axiom.om.OMXMLParserWrapper;
import org.apache.axiom.ts.AxiomTestCase;

/**
 * Tests that {@link OMContainer#serializeAndConsume(XMLStreamWriter)} throws an appropriate
 * exception if the part of the tree has already been consumed using
 * {@link OMContainer#getXMLStreamReaderWithoutCaching()}.
 */
// TODO: in this scenario we should trigger a NodeUnavailableException as well; fix this with AXIOM-288
public class TestSerializeAndConsumeConsumed extends AxiomTestCase {
    public TestSerializeAndConsumeConsumed(OMMetaFactory metaFactory) {
        super(metaFactory);
    }

    @Override
    protected void runTest() throws Throwable {
        OMXMLParserWrapper builder = OMXMLBuilderFactory.createOMBuilder(
                metaFactory.getOMFactory(),
                TestGetChildElementsConsumed.class.getResourceAsStream("purchase-order.xml"));

        OMElement documentElement = builder.getDocumentElement();

        XMLStreamReader reader = documentElement.getXMLStreamReaderWithoutCaching();

        //consume the parser. this should force the xml stream to be exhausted without
        //building the tree
        while (reader.hasNext()) {
            reader.next();
        }

        //try to find the children of the document element. This should produce an
        //error since the underlying stream is fully consumed without building the object tree
        try {
            documentElement.serializeAndConsume(StAX.createNullXMLStreamWriter());
            fail("Expected NodeUnavailableException");
        } catch (NodeUnavailableException e) {
            //wea re cool
        }
        
        documentElement.close(false);
    }
}