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XMLUnit 1.x Compatibility Layer
/*
******************************************************************
Copyright (c) 2001-2007,2015 Jeff Martin, Tim Bacon
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following
disclaimer in the documentation and/or other materials provided
with the distribution.
* Neither the name of the XMLUnit nor the names
of its contributors may be used to endorse or promote products
derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
******************************************************************
*/
package org.custommonkey.xmlunit;
import java.io.IOException;
import java.io.Reader;
import java.io.StringReader;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.traversal.DocumentTraversal;
import org.w3c.dom.traversal.NodeFilter;
import org.w3c.dom.traversal.NodeIterator;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
/**
* Encapsulation of the Node-by-Node testing of a DOM Document
* Uses a nodetype-specific NodeFilter to pass the DOM Nodes
* to a NodeTester instance that performs the acual Node validation.
* @see NodeTester
*/
public class NodeTest {
private final DocumentTraversal documentTraversal;
private final Node rootNode;
/**
* Construct a NodeTest for the DOM built using the String and JAXP
* @param xmlString the XML to test
* @throws SAXException if the parser says so
* @throws IOException on I/O errors
*/
public NodeTest(String xmlString)
throws SAXException, IOException {
this(new StringReader(xmlString));
}
/**
* Construct a NodeTest for the DOM built using the Reader and JAXP
* @param reader the XML to test
* @throws SAXException if the parser says so
* @throws IOException on I/O errors
*/
public NodeTest(Reader reader) throws SAXException,
IOException {
this(XMLUnit.buildDocument(XMLUnit.newControlParser(), reader));
}
/**
* Construct a NodeTest for the DOM built using the InputSource.
* @param src the XML to test
* @throws SAXException if the parser says so
* @throws IOException on I/O errors
*/
public NodeTest(InputSource src) throws SAXException,
IOException {
this(XMLUnit.buildDocument(XMLUnit.newControlParser(), src));
}
/**
* Construct a NodeTest for the specified Document
* @exception IllegalArgumentException if the Document does not support the DOM
* DocumentTraversal interface (most DOM implementations should provide this
* support)
* @param document the XML to test
*/
public NodeTest(Document document) {
this(getDocumentTraversal(document),
document.getDocumentElement());
}
/**
* Try to cast a Document into a DocumentTraversal
* @return DocumentTraversal interface if the DOM implementation supports it
*/
private static DocumentTraversal getDocumentTraversal(Document document) {
try {
return (DocumentTraversal) document;
} catch (ClassCastException e) {
throw new IllegalArgumentException("DOM Traversal not supported by "
+ document.getImplementation().getClass().getName()
+ ". To use this class you will need to switch to a DOM implementation that supports Traversal.");
}
}
/**
* Construct a NodeTest using the specified DocumentTraversal, starting at
* the specified root node
* @param documentTraversal traversal
* @param rootNode starting node for test
*/
public NodeTest(DocumentTraversal documentTraversal, Node rootNode) {
this.documentTraversal = documentTraversal;
this.rootNode = rootNode;
}
/**
* Does this NodeTest pass using the specified NodeTester instance?
* @param tester actually performs the tests
* @param singleNodeType note Node.ATTRIBUTE_NODE is not
* exposed by the DocumentTraversal node iterator unless the root node
* is itself an attribute - so a NodeTester that needs to test attributes
* should obtain those attributes from Node.ELEMENT_NODE
* nodes
* @exception NodeTestException if test fails
*/
public void performTest(NodeTester tester, short singleNodeType)
throws NodeTestException {
performTest(tester, new short[] {singleNodeType});
}
/**
* Does this NodeTest pass using the specified NodeTester instance?
* @param tester actually performs the tests
* @param nodeTypes note Node.ATTRIBUTE_NODE is not
* exposed by the DocumentTraversal node iterator unless the root node
* is itself an attribute - so a NodeTester that needs to test attributes
* should obtain those attributes from Node.ELEMENT_NODE
* nodes instead
* @exception NodeTestException if test fails
*/
public void performTest(NodeTester tester, short[] nodeTypes)
throws NodeTestException {
NodeIterator iter = documentTraversal.createNodeIterator(rootNode,
NodeFilter.SHOW_ALL, new NodeTypeNodeFilter(nodeTypes), true);
for (Node nextNode = iter.nextNode(); nextNode != null;
nextNode = iter.nextNode()) {
tester.testNode(nextNode, this);
}
tester.noMoreNodes(this);
}
/**
* Node type specific Node Filter: accepts Nodes of those types specified
* in constructor, rejects all others
*/
private static class NodeTypeNodeFilter implements NodeFilter {
private final short[] nodeTypes;
/**
* Construct filter for specific node types
* @param nodeTypes note Node.ATTRIBUTE_NODE is not
* exposed by the DocumentTraversal node iterator unless the root node
* is itself an attribute - so a NodeTester that needs to test attributes
* should obtain those attributes from Node.ELEMENT_NODE
* nodes
*/
public NodeTypeNodeFilter(short[] nodeTypes) {
this.nodeTypes = nodeTypes;
}
/**
* NodeFilter method.
* @param aNode
* @return
*/
public short acceptNode(Node aNode) {
if (acceptNodeType(aNode.getNodeType())) {
return NodeFilter.FILTER_ACCEPT;
}
return NodeFilter.FILTER_REJECT;
}
/**
* Does this instance accept nodes with the node type value
* @param shortVal
* @return
*/
private boolean acceptNodeType(short shortVal) {
for (int i=0; i < nodeTypes.length; ++i) {
if (nodeTypes[i] == shortVal) {
return true;
}
}
return false;
}
}
}