org.chiba.xml.xforms.xpath.test.PredicateTest.java Source code

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package org.chiba.xml.xforms.xpath.test;

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.apache.commons.jxpath.JXPathContext;
import org.apache.commons.jxpath.Pointer;
import org.w3c.dom.Document;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

/**
 * Tests predicate evaluation.
 *
 * @author Ulrich Nicolas Lissé
 * @version $Id: PredicateTest.java,v 1.4 2004/08/15 14:14:16 joernt Exp $
 */
public class PredicateTest extends TestCase {

    private JXPathContext rootContext = null;
    private JXPathContext relativeContext = null;
    private Pointer pointer = null;

    /**
     * Creates a new predicate test.
     *
     * @param name the test name.
     */
    public PredicateTest(String name) {
        super(name);
    }

    /**
     * Runs the xforms extension functions test.
     *
     * @param args arguments are ignored.
     */
    public static void main(String[] args) {
        junit.textui.TestRunner.run(suite());
    }

    /**
     * Returns a test suite.
     *
     * @return a test suite.
     */
    public static Test suite() {
        return new TestSuite(PredicateTest.class);
    }

    /**
     * Test case for predicate evaluation.
     * <p/>
     * Tests expression <code>not(//person/@name=.)</code> relative to
     * <code>/people/person/@name</code>.
     *
     * @throws Exception if an error occurred during the test.
     */
    public void testPathes() throws Exception {
        // initial value is 'NameX'
        assertTrue(this.relativeContext.getPointer("not(//person/@name=.)").getValue().toString().equals("true"));

        this.pointer.setValue("Name1");
        assertTrue(this.relativeContext.getPointer("not(//person/@name=.)").getValue().toString().equals("false"));

        this.pointer.setValue("Name2");
        assertTrue(this.relativeContext.getPointer("not(//person/@name=.)").getValue().toString().equals("false"));

        this.pointer.setValue("Name3");
        assertTrue(this.relativeContext.getPointer("not(//person/@name=.)").getValue().toString().equals("false"));

        this.pointer.setValue("Name4");
        assertTrue(this.relativeContext.getPointer("not(//person/@name=.)").getValue().toString().equals("false"));
    }

    /**
     * Test case for predicate evaluation.
     * <p/>
     * Tests expression <code>not(//person[@name=.])</code> relative to
     * <code>/people/person/@name</code>.
     *
     * @throws Exception if an error occurred during the test.
     */
    public void testPredicates() throws Exception {
        // initial value is 'NameX'
        assertTrue(this.relativeContext.getPointer("boolean(//person[@name=.])").getValue().toString()
                .equals("false"));

        assertTrue(this.relativeContext.getPointer("boolean(//person[@name='Name1'])").getValue().toString()
                .equals("true"));

        this.pointer.setValue("Name4");
        assertTrue(this.relativeContext.getValue(relativeContext.getPointer(".").asPath()).equals("Name4"));

        assertTrue(this.relativeContext.getPointer("boolean(//person[@name=//new/@name])").getValue().toString()
                .equals("true"));
    }

    /**
     * Sets up the test.
     *
     * @throws Exception in any error occurred during setup.
     */
    protected void setUp() throws Exception {
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        factory.setNamespaceAware(true);
        factory.setValidating(false);

        DocumentBuilder builder = factory.newDocumentBuilder();
        Document document = builder.parse(PredicateTest.class.getResourceAsStream("PredicateTest.xml"));
        this.rootContext = JXPathContext.newContext(document);

        this.pointer = this.rootContext.getPointer("/people/new/@name");
        this.relativeContext = this.rootContext.getRelativeContext(this.pointer);
    }

    /**
     * Tears down the test.
     *
     * @throws Exception in any error occurred during setup.
     */
    protected void tearDown() throws Exception {
        this.rootContext = null;
        this.relativeContext = null;
        this.pointer = null;
    }

}