JsonXmlStreamReaderNaturalNotationTest.java

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package com.sun.jersey.json.impl.reader;

import java.io.StringReader;
import java.io.StringWriter;
import java.io.Writer;
import java.util.Collections;
import java.util.Map;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.Marshaller;
import javax.xml.bind.UnmarshalException;
import javax.xml.bind.Unmarshaller;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;

import com.sun.jersey.api.json.JSONConfiguration;
import com.sun.jersey.json.impl.AttrAndCharDataBean;
import com.sun.jersey.json.impl.ComplexBeanWithAttributes;
import com.sun.jersey.json.impl.ComplexBeanWithAttributes2;
import com.sun.jersey.json.impl.ComplexBeanWithAttributes3;
import com.sun.jersey.json.impl.EncodedContentBean;
import com.sun.jersey.json.impl.JSONHelper;
import com.sun.jersey.json.impl.ListAndNonListBean;
import com.sun.jersey.json.impl.ListEmptyBean;
import com.sun.jersey.json.impl.ListWrapperBean;
import com.sun.jersey.json.impl.PureCharDataBean;
import com.sun.jersey.json.impl.SimpleBean;
import com.sun.jersey.json.impl.SimpleBeanWithAttributes;
import com.sun.jersey.json.impl.SimpleBeanWithJustOneAttribute;
import com.sun.jersey.json.impl.SimpleBeanWithJustOneAttributeAndValue;
import com.sun.jersey.json.impl.TreeModel;
import com.sun.jersey.json.impl.TwoListsWrapperBean;
import com.sun.jersey.json.impl.User;
import com.sun.jersey.json.impl.UserTable;
import com.sun.jersey.json.impl.writer.Stax2JacksonWriter;

import org.codehaus.jackson.JsonFactory;
import org.codehaus.jackson.JsonGenerator;

import junit.framework.TestCase;

/**
 * @author Jakub Podlesak (jakub.podlesak at oracle.com)
 * @author Michal Gajdos (michal.gajdos at oracle.com)
 */
public class JsonXmlStreamReaderNaturalNotationTest extends TestCase {

    public JsonXmlStreamReaderNaturalNotationTest(String testName) {
        super(testName);
    }

    public void testAttrAndCharData() throws Exception {
        _testBean(AttrAndCharDataBean.class, AttrAndCharDataBean.createTestInstance());
    }

    public void testComplexBeanWithAttributes() throws Exception {
        _testBean(ComplexBeanWithAttributes.class, ComplexBeanWithAttributes.createTestInstance());
    }

    public void testComplexBeanWithAttributes2() throws Exception {
        _testBean(ComplexBeanWithAttributes2.class, ComplexBeanWithAttributes2.createTestInstance());
    }

    public void testComplexBeanWithAttributes3() throws Exception {
        _testBean(ComplexBeanWithAttributes3.class, ComplexBeanWithAttributes3.createTestInstance());
    }

    public void testEncodedContentBean() throws Exception {
        _testBean(EncodedContentBean.class, EncodedContentBean.createTestInstance());
    }

    public void testListAndNonListBean() throws Exception {
        _testBean(ListAndNonListBean.class, ListAndNonListBean.createTestInstance());
    }

    public void testListEmptyBean() throws Exception {
        _testBean(ListEmptyBean.class, ListEmptyBean.createTestInstance());
    }

    public void testListWrapperBean() throws Exception {
        _testBean(ListWrapperBean.class, ListWrapperBean.createTestInstance());
    }

    public void testPureCharDataBean() throws Exception {
        _testBean(PureCharDataBean.class, PureCharDataBean.createTestInstance());
    }

    public void testSimpleBean() throws Exception {
        _testBean(SimpleBean.class, SimpleBean.createTestInstance());
    }

    public void testSimpleBeanWithAttributes() throws Exception {
        _testBean(SimpleBeanWithAttributes.class, SimpleBeanWithAttributes.createTestInstance());
    }

    public void testSimpleBeanWithJustOneAttribute() throws Exception {
        _testBean(SimpleBeanWithJustOneAttribute.class, SimpleBeanWithJustOneAttribute.createTestInstance());
    }

    public void testSimpleBeanWithJustOneAttributeAndValue() throws Exception {
        _testBean(SimpleBeanWithJustOneAttributeAndValue.class, SimpleBeanWithJustOneAttributeAndValue.createTestInstance());
    }

    public void testTreeModelBean() throws Exception {
        _testBean(TreeModel.class, TreeModel.createTestInstance());
    }

    public void testTwoListsWrapperBean() throws Exception {
        _testBean(TwoListsWrapperBean.class, TwoListsWrapperBean.createTestInstance());
    }

    public void testUser() throws Exception {
        _testBean(User.class, User.createTestInstance());
    }

    public void testUserTable() throws Exception {
        _testBean(UserTable.class, UserTable.createTestInstance());
    }

    private void _testBean(Class clazz, Object bean) throws Exception {
        Map<String, Object> props = JSONHelper.createPropertiesForJaxbContext(Collections.<String, Object>emptyMap());
        Class[] classes = new Class[]{clazz};

        JAXBContext ctx = JAXBContext.newInstance(classes, props);

        JsonFactory factory = new JsonFactory();
        Writer sWriter = new StringWriter();
        JsonGenerator g;

        g = factory.createJsonGenerator(sWriter);

        Marshaller marshaller = ctx.createMarshaller();
        marshaller.marshal(bean, new Stax2JacksonWriter(g, clazz, ctx));

        g.flush();

        String jsonExpression = sWriter.toString();
        System.out.println(jsonExpression);

        Unmarshaller unmarshaller = ctx.createUnmarshaller();
        final XMLStreamReader xmlStreamReader = JsonXmlStreamReader.create(new StringReader(jsonExpression), JSONConfiguration
                .natural().rootUnwrapping(false).build(), null, clazz, ctx, false);
        Object unmarshalledBean = unmarshaller.unmarshal(xmlStreamReader);

        System.out.println(String.format("Unmarshalled bean = %s", unmarshalledBean));

        assertEquals(bean, unmarshalledBean);
    }

    public void testUserNegativeInvalidJsonWithoutEndObjectToken() throws Exception {
        final Object testInstance = User.createTestInstance();

        final JAXBContext context = getContext(User.class);

        String jsonExpression = _testBeanMarshallNegative(User.class, context, testInstance);
        jsonExpression = jsonExpression.substring(0, jsonExpression.length() - 1);
        System.out.println(jsonExpression);

        _testBeanUnmarshallNegative(User.class, context, jsonExpression);
    }

    public void testUserNegativeInvalidJson() throws Exception {
        final Object testInstance = User.createTestInstance();

        final JAXBContext context = getContext(User.class);

        String jsonExpression = _testBeanMarshallNegative(User.class, context, testInstance);
        jsonExpression = jsonExpression.substring(0, jsonExpression.length() - 1) + ",";
        System.out.println(jsonExpression);

        _testBeanUnmarshallNegative(User.class, context, jsonExpression);
    }

    public void testUserNegativeInvalidJsonMoreFields() throws Exception {
        final Object testInstance = User.createTestInstance();

        final JAXBContext context = getContext(User.class);

        String jsonExpression = _testBeanMarshallNegative(User.class, context, testInstance);
        jsonExpression = jsonExpression.substring(0, jsonExpression.length() - 1) + ",\"hello\":1";
        System.out.println(jsonExpression);

        _testBeanUnmarshallNegative(User.class, context, jsonExpression);
    }

    public void testUserNegativeInvalidJsonMoreEndObjectToken() throws Exception {
        final Object testInstance = User.createTestInstance();

        final JAXBContext context = getContext(User.class);

        String jsonExpression = _testBeanMarshallNegative(User.class, context, testInstance);
        jsonExpression += "}";
        System.out.println(jsonExpression);

        _testBeanUnmarshallNegative(User.class, context, jsonExpression);
    }

    private JAXBContext getContext(final Class<User> clazz) throws Exception {
        final Map<String, Object> props = JSONHelper.createPropertiesForJaxbContext(Collections.<String, Object>emptyMap());
        final Class[] classes = new Class[]{clazz};

        return JAXBContext.newInstance(classes, props);
    }

    private void _testBeanUnmarshallNegative(final Class<User> clazz, final JAXBContext context, final String jsonExpression)
            throws Exception {
        final Unmarshaller unmarshaller = context.createUnmarshaller();
        final XMLStreamReader xmlStreamReader = JsonXmlStreamReader.create(new StringReader(jsonExpression), JSONConfiguration
                .natural().rootUnwrapping(false).build(), null, clazz, context, false);

        try {
            unmarshaller.unmarshal(xmlStreamReader);

            fail("JSON should not be unmarshalled: " + jsonExpression);
        } catch (UnmarshalException e) {
            // ok
            assertTrue(e.getLinkedException() instanceof XMLStreamException
                || e.getLinkedException().getCause() instanceof XMLStreamException);
            System.out.println("Unmashalling failed.");
        }
    }

    private String _testBeanMarshallNegative(final Class<User> clazz, final JAXBContext context, final Object testInstance)
            throws Exception {
        final JsonFactory factory = new JsonFactory();
        final Writer sWriter = new StringWriter();
        final JsonGenerator jsonGenerator = factory.createJsonGenerator(sWriter);

        final Marshaller marshaller = context.createMarshaller();
        marshaller.marshal(testInstance, new Stax2JacksonWriter(jsonGenerator, clazz, context));

        jsonGenerator.flush();
        return sWriter.toString();
    }

    @Override
    protected void setUp() throws Exception {
        super.setUp();
    }

    @Override
    protected void tearDown() throws Exception {
        super.tearDown();
    }
}