/*
* Copyright 2013-2014 the original author or authors.
*
* 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.springframework.hateoas;
import static org.hamcrest.Matchers.*;
import static org.junit.Assert.*;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.StringReader;
import java.io.StringWriter;
import java.io.Writer;
import java.nio.MappedByteBuffer;
import java.nio.channels.FileChannel;
import java.nio.charset.Charset;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import org.custommonkey.xmlunit.Diff;
import org.junit.Before;
import org.junit.Test;
import org.springframework.core.io.ClassPathResource;
import org.springframework.hateoas.VndErrors.VndError;
import org.springframework.hateoas.core.EvoInflectorRelProvider;
import org.springframework.hateoas.hal.Jackson2HalModule;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
/**
* Integration tests for marshalling of {@link VndErrors}.
*
* @author Oliver Gierke
*/
public class VndErrorsMarshallingTest {
ObjectMapper jackson2Mapper;
Marshaller marshaller;
Unmarshaller unmarshaller;
RelProvider relProvider = new EvoInflectorRelProvider();
VndErrors errors;
String jsonReference;
String json2Reference;
String xmlReference;
public VndErrorsMarshallingTest() throws IOException {
jsonReference = readFile(new ClassPathResource("vnderror.json"));
json2Reference = readFile(new ClassPathResource("vnderror2.json"));
xmlReference = readFile(new ClassPathResource("vnderror.xml"));
}
@Before
public void setUp() throws Exception {
jackson2Mapper = new com.fasterxml.jackson.databind.ObjectMapper();
jackson2Mapper.registerModule(new Jackson2HalModule());
jackson2Mapper.setHandlerInstantiator(new Jackson2HalModule.HalHandlerInstantiator(relProvider, null));
jackson2Mapper.configure(SerializationFeature.INDENT_OUTPUT, true);
JAXBContext context = JAXBContext.newInstance(VndErrors.class);
marshaller = context.createMarshaller();
unmarshaller = context.createUnmarshaller();
VndError error = new VndError("42", "Validation failed!", //
new Link("http://...", "describes"), new Link("http://...", "help"));
errors = new VndErrors(error, error, error);
}
/**
* @see #62
*/
@Test
public void jackson2Marshalling() throws Exception {
assertThat(jackson2Mapper.writeValueAsString(errors), equalToIgnoringWhiteSpace(json2Reference));
}
/**
* @see #62, #154
*/
@Test
public void jaxbMarshalling() throws Exception {
Writer writer = new StringWriter();
marshaller.marshal(errors, writer);
assertThat(new Diff(xmlReference, writer.toString()).similar(), is(true));
}
/**
* @see #93, #94
*/
@Test
public void jackson2UnMarshalling() throws Exception {
assertThat(jackson2Mapper.readValue(jsonReference, VndErrors.class), is(errors));
}
/**
* @see #93, #94
*/
@Test
public void jaxbUnMarshalling() throws Exception {
VndErrors actual = (VndErrors) unmarshaller.unmarshal(new StringReader(xmlReference));
assertThat(actual, is(errors));
}
private static String readFile(org.springframework.core.io.Resource resource) throws IOException {
FileInputStream stream = new FileInputStream(resource.getFile());
try {
FileChannel fc = stream.getChannel();
MappedByteBuffer bb = fc.map(FileChannel.MapMode.READ_ONLY, 0, fc.size());
return Charset.defaultCharset().decode(bb).toString();
} finally {
stream.close();
}
}
}