/*
* Copyright 2013 Red Hat Inc. and/or its affiliates and other contributors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.switchyard.transform.internal.json;
import static org.junit.Assert.assertEquals;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import java.util.Map;
import org.codehaus.jackson.JsonParseException;
import org.codehaus.jackson.map.JsonMappingException;
import org.codehaus.jackson.map.ObjectMapper;
import org.junit.Assert;
import org.junit.Test;
import org.switchyard.config.model.ModelPuller;
import org.switchyard.config.model.switchyard.SwitchYardModel;
import org.switchyard.config.model.transform.TransformModel;
import org.switchyard.config.model.transform.TransformsModel;
import org.switchyard.internal.DefaultMessage;
import org.switchyard.internal.transform.BaseTransformerRegistry;
import org.switchyard.transform.Message2MessageTransformer;
import org.switchyard.transform.TransformSequence;
import org.switchyard.transform.Transformer;
import org.switchyard.transform.TransformerRegistry;
import org.switchyard.transform.config.model.JSONTransformModel;
import org.switchyard.transform.internal.TransformerRegistryLoader;
import org.switchyard.transform.internal.json.User.Gender;
import org.switchyard.transform.internal.json.User.Name;
import org.switchyard.transform.json.internal.JSON2JavaTransformer;
import org.switchyard.transform.json.internal.JSONTransformFactory;
import org.switchyard.transform.json.internal.Java2JSONTransformer;
/**
* @author Alejandro Montenegro <<href="mailto:aamonten@gmail.com">aamonten@gmail.com</a>>
*/
@SuppressWarnings({"unchecked","rawtypes"})
public class JSONTransformerTest {
private final static String JSON_PERSON = "{\"age\":31,\"name\":\"Alejandro\"}";
private final static String JSON_USER = "{\"verified\":false,\"gender\":\"MALE\",\"name\":{\"first\":\"Joe\",\"last\":\"Sixpack\"}}";
private final static String JSON_USER_LIST = "[{\"name\":{\"first\":\"Joe\",\"last\":\"Sixpack\"},\"gender\":\"MALE\",\"verified\":false}]";
private TransformerRegistry xformReg;
public JSONTransformerTest() {
xformReg = new BaseTransformerRegistry();
new TransformerRegistryLoader(xformReg).loadOOTBTransforms();
}
@Test
public void test_JSONResultPerson() {
try {
Transformer transformer = getTransformer("switchyard-config-01.xml");
Object expected = toObject(JSON_PERSON, Person.class);
Object result = toObject((String)transformer.transform(new Person("Alejandro", 31)), Person.class);
assertEquals(expected, result);
} catch (Exception e) {
Assert.fail("caught an exception " + e.getMessage());
}
}
@Test
public void test_JAVAResultPerson() {
try {
DefaultMessage message = newMessage(JSON_PERSON);
Transformer transformer = getTransformer("switchyard-config-02.xml");
transformer.transform(message);
assertEquals(new Person("Alejandro", 31), message.getContent());
} catch (Exception e) {
Assert.fail("caught an exception " + e.getMessage());
}
}
private DefaultMessage newMessage(Object content) {
DefaultMessage message = new DefaultMessage().setContent(content);
message.setTransformerRegistry(xformReg);
return message;
}
@Test
public void test_JSONResultUser() {
try {
Transformer transformer = getTransformer("switchyard-config-03.xml");
Object expected = toObject(JSON_USER,User.class);
Object result = toObject((String)transformer.transform(getUser()), User.class);
assertEquals(expected, result);
} catch (Exception e) {
Assert.fail("caught an exception " + e.getMessage());
}
}
@Test
public void test_JAVAResultUser() {
try {
DefaultMessage message = newMessage(JSON_USER);
Transformer transformer = getTransformer("switchyard-config-04.xml");
transformer.transform(message);
assertEquals(getUser(), message.getContent());
} catch (Exception e) {
Assert.fail("caught an exception " + e.getMessage());
}
}
@Test
public void test_JAVAResultList() {
try {
DefaultMessage message = newMessage(JSON_USER_LIST);
Transformer transformer = getTransformer("switchyard-config-05.xml");
transformer.transform(message);
assertEquals(toObject(JSON_USER_LIST, List.class), message.getContent());
} catch (Exception e) {
Assert.fail("caught an exception " + e.getMessage());
}
}
@Test
public void test_JAVAResultMap() {
try {
DefaultMessage message = newMessage(JSON_USER);
Transformer transformer = getTransformer("switchyard-config-06.xml");
transformer.transform(message);
assertEquals(toObject(JSON_USER, Map.class), message.getContent());
} catch (Exception e) {
Assert.fail("caught an exception " + e.getMessage());
}
}
@Test
public void test_WrongFromInstance() {
try {
Transformer transformer = getTransformer("switchyard-config-03.xml");
Object expected = toObject(JSON_USER,User.class);
Object result = toObject((String)transformer.transform(new Person()), User.class);
assertEquals(expected, result);
} catch (Exception e) {
boolean exceptionMatches = e.getMessage().contains("SWITCHYARD016828");
Assert.assertTrue(exceptionMatches);
}
}
private Transformer getTransformer(String config) throws IOException {
InputStream swConfigStream = getClass().getResourceAsStream(config);
if (swConfigStream == null) {
Assert.fail("null config stream.");
}
SwitchYardModel switchyardConfig = (SwitchYardModel) new ModelPuller()
.pull(swConfigStream);
TransformsModel transforms = switchyardConfig.getTransforms();
List<TransformModel> trans = transforms.getTransforms();
JSONTransformModel jsonTransformModel = (JSONTransformModel) trans
.get(0);
if (jsonTransformModel == null) {
Assert.fail("No json config.");
}
Transformer transformer = new JSONTransformFactory().newTransformer(null, jsonTransformModel);
if (!(transformer instanceof JSON2JavaTransformer ||transformer instanceof Java2JSONTransformer)) {
Assert.fail("Not an instance of a JSONTransformer.");
}
return transformer;
}
private User getUser(){
User user = new User();
Name name = new Name();
name.setFirst("Joe");
name.setLast("Sixpack");
user.setName(name);
user.setVerified(false);
user.setGender(Gender.MALE);
return user;
}
private Object toObject(String jsonString, Class clazz) throws JsonParseException, JsonMappingException, IOException{
ObjectMapper mapper = new ObjectMapper();
return mapper.readValue(jsonString, clazz);
}
}