testxpathexamples.java

Java的面向对象数据库系统的源代码

/*
 * Copyright 2001 (C) MetaStuff, Ltd. All Rights Reserved.
 *
 * This software is open source.
 * See the bottom of this file for the licence.
 *
 * $Id: TestXPathExamples.java,v 1.2 2003/11/02 18:31:28 per_nyfelt Exp $
 */

package test.dom4j;

import junit.framework.Test;
import junit.framework.TestSuite;
import junit.textui.TestRunner;
import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.Node;
import org.dom4j.XPathFactory;
import org.dom4j.io.SAXReader;
import org.dom4j.rule.Pattern;

import java.util.Iterator;
import java.util.List;


/** Performs a number of unit test cases on the XPath engine
  *
  * @author <a href="mailto:[e-mail]">James Strachan</a>
  * @version $Revision: 1.2 $
  */
public class TestXPathExamples extends AbstractTestCase {

    protected static boolean VERBOSE = true;

    protected SAXReader xmlReader = new SAXReader();

    /** The document on which the tests are being run */
    protected Document testDocument;

    /** The context node on which the tests are being run */
    protected Node testContext;

    /** factory for XPath, Patterns and nodes */
    protected XPathFactory factory;


    public static void main( String[] args ) {
        TestRunner.run( suite() );
    }

    public static Test suite() {
        return new TestSuite( TestXPathExamples.class );
    }

    public TestXPathExamples(String name) {
        super(name);
    }

    public void log(String text) {
        System.out.println(text);
    }

    // Test case(s)
    //-------------------------------------------------------------------------
    public void testXPaths() throws Exception {
        Document document = xmlReader.read( "xml/test/xpath/tests.xml" );
        Element root = document.getRootElement();
        for ( Iterator iter = root.elementIterator( "document" ); iter.hasNext(); ) {
            Element documentTest = (Element) iter.next();
            testDocument( documentTest );
        }
    }

    // Implementation methods
    //-------------------------------------------------------------------------
    protected void testDocument(Element documentTest) throws Exception {
        String url = documentTest.attributeValue( "url" );
        testDocument = xmlReader.read( url );
        assertTrue( "Loaded test document: " + url, testDocument != null );

        log( "Loaded document: " + url );

        for ( Iterator iter = documentTest.elementIterator( "context" ); iter.hasNext(); ) {
            Element context = (Element) iter.next();
            testContext( documentTest, context );
        }
    }

    protected void testContext(Element documentTest, Element context) throws Exception {
        String xpath = context.attributeValue( "select" );

        if ( VERBOSE ) {
            log( "Selecting nodes for XPath: " + testDocument.createXPath( xpath ) );
        }

        List list = testDocument.selectNodes( xpath );

        assertTrue( "Found at least one context nodes to test for path: " + xpath, list != null && list.size() > 0 );

        for ( Iterator iter = list.iterator(); iter.hasNext(); ) {
            Object object = iter.next();
            assertTrue( "Context node is a Node: " + object, object instanceof Node );
            testContext = (Node) object;

            log( "Context is now: " + testContext );
            runTests( documentTest, context );
            log( "" );
        }
    }

    protected void runTests(Element documentTest, Element context) throws Exception {
        for ( Iterator iter = context.elementIterator( "test" ); iter.hasNext(); ) {
            Element test = (Element) iter.next();
            runTest( documentTest, context, test );
        }
        for ( Iterator iter = context.elementIterator( "valueOf" ); iter.hasNext(); ) {
            Element valueOf = (Element) iter.next();
            testValueOf( documentTest, context, valueOf );
        }
        for ( Iterator iter = context.elementIterator( "pattern" ); iter.hasNext(); ) {
            Element pattern = (Element) iter.next();
            testPattern( documentTest, context, pattern );
        }
        for ( Iterator iter = context.elementIterator( "filter" ); iter.hasNext(); ) {
            Element filter = (Element) iter.next();
            testFilter( documentTest, context, filter );
        }
    }

    protected void runTest(Element documentTest, Element context, Element test) throws Exception {
        String xpath = test.attributeValue( "select" );

        String description = "Path: " + xpath;

        if ( VERBOSE ) {
            log( "" );
            log( "XPath for: " + xpath );
            log( "is: " + testContext.createXPath( xpath ) );
            log( "" );
        }

        String count = test.attributeValue( "count" );
        if ( count != null ) {
            int expectedSize = Integer.parseInt( count );
            List results = testContext.selectNodes( xpath );

            log( description + " found result size: " + results.size() );

            assertEquals( description + " wrong result size", expectedSize, results.size() );
        }

        Element valueOf = test.element( "valueOf" );
        if ( valueOf != null ) {
            Node node = testContext.selectSingleNode( xpath );
            assertTrue( description + " found node", node != null );

            String expected = valueOf.getText();
            String result = node.valueOf( valueOf.attributeValue( "select" ) );

            log( description );
            log( "\texpected: " + expected + " result: " + result );

            assertEquals( description, expected, result );
        }
    }

    protected void testValueOf(Element documentTest, Element context, Element valueOf) throws Exception {
        String xpath = valueOf.attributeValue( "select" );
        String description = "valueOf: " + xpath;

        if ( VERBOSE ) {
            log( "XPath: " + testContext.createXPath( xpath ) );
        }

        String expected = valueOf.getText();
        String result = testContext.valueOf( xpath );

        log( description );
        log( "\texpected: " + expected + " result: " + result );

        assertEquals( description, expected, result );
    }

    protected void testPattern(Element documentTest, Element context, Element patternElement) throws Exception {
        String match = patternElement.attributeValue( "match" );
        String description = "match: " + match;

        log( "" );
        log( description );

        Pattern pattern = factory.createPattern( match );

        if ( VERBOSE ) {
            log( "Pattern: " + pattern );
        }

        assertTrue( description, pattern.matches( testContext ) );

    }

    protected void testFilter(Element documentTest, Element context, Element pattern) throws Exception {
        String match = pattern.attributeValue( "match" );
        String description = "match: " + match;

        log( "" );
        log( description );

        if ( VERBOSE ) {
            log( "Pattern: " + factory.createXPathFilter( match ) );
        }

        assertTrue( description, testContext.matches( match ) );
    }
}




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 * that the following conditions are met:
 *
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 *    statements and notices.  Redistributions must also contain a
 *    copy of this document.
 *
 * 2. Redistributions in binary form must reproduce the
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 *
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 *    (http://dom4j.org/).
 *
 * THIS SOFTWARE IS PROVIDED BY METASTUFF, LTD. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
 * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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 * 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.
 *
 * Copyright 2001 (C) MetaStuff, Ltd. All Rights Reserved.
 *
 * $Id: TestXPathExamples.java,v 1.2 2003/11/02 18:31:28 per_nyfelt Exp $
 */