NullStringTest.java

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package com.sun.jersey.json.impl;

import com.sun.jersey.api.json.JSONConfiguration;
import com.sun.jersey.api.json.JSONJAXBContext;
import com.sun.jersey.api.json.JSONMarshaller;
import com.sun.jersey.api.json.JSONUnmarshaller;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.HashMap;
import java.util.Map;
import junit.framework.TestCase;

/**
 *
 * @author Jakub.Podlesak@Sun.COM
 */
public class NullStringTest extends TestCase {

    final NullStringBean one = TestHelper.createTestInstance(NullStringBean.class);

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        one.nullString = null;
    }

    public void testBadgerfish() throws Exception {
        System.out.println("\nTesting BadgerFish: ------------------------");
        tryWithConfiguration(JSONConfiguration.badgerFish().build());
    }

    public void testMappedJettison() throws Exception {
        System.out.println("\nTesting Mapped Jettison: ---------------------");
        Map<String, String> ns2json = new HashMap<String, String>();
        ns2json.put("http://www.w3.org/2001/XMLSchema-instance", "xsi");
        tryWithConfiguration(JSONConfiguration.mappedJettison().xml2JsonNs(ns2json).build());
    }

    public void _testNatural() throws Exception {
        // TODO: jaxb does not inform about possible xsi:nil attribute
        System.out.println("\nTesting Natural: -------------------------");
        tryWithConfiguration(JSONConfiguration.natural().rootUnwrapping(false).build());
    }

    public void testMapped() throws Exception {
        System.out.println("\nTesting Mapped: -------------------------");
        Map<String, String> ns2json = new HashMap<String, String>();
        ns2json.put("http://www.w3.org/2001/XMLSchema-instance", "xsi");
        tryWithConfiguration(JSONConfiguration.mapped().rootUnwrapping(true).xml2JsonNs(ns2json).build());
    }

    public void _testMappedWithStringInput() throws Exception {
        // to make this work, would require generating a fake xsi:nil attribute
        System.out.println("\nTesting Mapped: -------------------------");
        Map<String, String> ns2json = new HashMap<String, String>();
        ns2json.put("http://www.w3.org/2001/XMLSchema-instance", "xsi");
        tryConfigurationWithStringInput(JSONConfiguration.mapped().rootUnwrapping(true).xml2JsonNs(ns2json).build(), "{\"nullString\":null}");
    }

    private void tryConfigurationWithStringInput(JSONConfiguration configuration, String inputJSON) throws Exception {
        final JSONJAXBContext ctx = new JSONJAXBContext(configuration, NullStringBean.class);
        final JSONUnmarshaller ju = ctx.createJSONUnmarshaller();

        NullStringBean two = ju.unmarshalFromJSON(new StringReader(inputJSON), NullStringBean.class);

        assertEquals(one, two);
    }

    private void tryWithConfiguration(JSONConfiguration configuration) throws Exception {

        final JSONJAXBContext ctx = new JSONJAXBContext(configuration, NullStringBean.class);
        final JSONMarshaller jm = ctx.createJSONMarshaller();
        final JSONUnmarshaller ju = ctx.createJSONUnmarshaller();
        StringWriter sw = new StringWriter();
        jm.marshallToJSON(one, sw);
        System.out.println(String.format("Marshalled: %s", sw));

        NullStringBean two = ju.unmarshalFromJSON(new StringReader(sw.toString()), NullStringBean.class);

        assertEquals(one, two);
    }
}