test/jaxp/javax/xml/jaxp/unittest/xpath/Bug4992805.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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 * 2 along with this work; if not, write to the Free Software Foundation,
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package xpath;

import java.io.StringReader;

import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathFactory;
import javax.xml.xpath.XPathFactoryConfigurationException;

import org.testng.Assert;
import org.testng.annotations.Listeners;
import org.testng.annotations.Test;
import org.xml.sax.InputSource;

/*
 * @test
 * @bug 4992805
 * @library /javax/xml/jaxp/libs /javax/xml/jaxp/unittest
 * @run testng/othervm -DrunSecMngr=true xpath.Bug4992805
 * @run testng/othervm xpath.Bug4992805
 * @summary Test XPath.evaluate(expression,source,returnType) throws NPE if returnType is null.
 */
@Listeners({jaxp.library.BasePolicy.class})
public class Bug4992805 {

    private static String expression = "/widgets/widget[@name='a']/@quantity";

    // test for XPath.evaluate(java.lang.String expression, InputSource source,
    // QName returnType)
    // source is null , should throw NPE
    @Test
    public void testXPath30() throws Exception {
        try {
            createXPath().evaluate(expression, new InputSource(new StringReader("<root/>")), null);
            Assert.fail();
        } catch (NullPointerException e) {
            ; // as expected
        }
    }

    private XPath createXPath() throws XPathFactoryConfigurationException {
        XPathFactory xpathFactory = XPathFactory.newInstance();
        Assert.assertNotNull(xpathFactory);
        XPath xpath = xpathFactory.newXPath();
        Assert.assertNotNull(xpath);
        return xpath;
    }
}