#154 - Introduce XMLUnit to make sure we can build on Java 6 and 7.

Using XMLUnit's Diff to guard against minor changes in the default rendering of XML between Java 6 and 7.

pom.xml

@@ -238,6 +238,13 @@
 			<version>2.3</version>
 			<scope>test</scope>
 		</dependency>
+		
+		<dependency>
+			<groupId>xmlunit</groupId>
+			<artifactId>xmlunit</artifactId>
+			<version>1.3</version>
+			<scope>test</scope>
+		</dependency>
 
 	</dependencies>
 

src/test/java/org/springframework/hateoas/ResourceIntegrationTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012 the original author or authors.
+ * Copyright 2012-2014 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.
@@ -27,6 +27,7 @@ import javax.xml.bind.annotation.XmlRootElement;
 
 import org.codehaus.jackson.annotate.JsonAutoDetect;
 import org.codehaus.jackson.annotate.JsonAutoDetect.Visibility;
+import org.custommonkey.xmlunit.Diff;
 import org.junit.Test;
 
 /**
@@ -54,6 +55,7 @@ public class ResourceIntegrationTest extends AbstractMarshallingIntegrationTest
 
 	/**
 	 * @see #124
+	 * @see #154
 	 */
 	@Test
 	public void marshalsResourceToXml() throws Exception {
@@ -71,7 +73,7 @@ public class ResourceIntegrationTest extends AbstractMarshallingIntegrationTest
 		Marshaller marshaller = context.createMarshaller();
 		marshaller.marshal(resource, writer);
 
-		assertThat(writer.toString(), is(XML_REFERENCE));
+		assertThat(new Diff(XML_REFERENCE, writer.toString()).similar(), is(true));
 	}
 
 	/**

src/test/java/org/springframework/hateoas/VndErrorsMarshallingTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013 the original author or authors.
+ * 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.
@@ -33,6 +33,7 @@ import javax.xml.bind.Unmarshaller;
 
 import org.codehaus.jackson.map.ObjectMapper;
 import org.codehaus.jackson.map.SerializationConfig.Feature;
+import org.custommonkey.xmlunit.Diff;
 import org.junit.Before;
 import org.junit.Test;
 import org.springframework.core.io.ClassPathResource;
@@ -71,7 +72,6 @@ public class VndErrorsMarshallingTest {
 	}
 
 	@Before
-	@SuppressWarnings("deprecation")
 	public void setUp() throws Exception {
 
 		jackson1Mapper = new ObjectMapper();
@@ -92,26 +92,36 @@ public class VndErrorsMarshallingTest {
 		errors = new VndErrors(error, error, error);
 	}
 
+	/**
+	 * @see #62
+	 */
 	@Test
 	public void jackson1Marshalling() throws Exception {
 		assertThat(jackson1Mapper.writeValueAsString(errors), is(jsonReference));
 	}
 
+	/**
+	 * @see #62
+	 */
 	@Test
 	public void jackson2Marshalling() throws Exception {
 		assertThat(jackson2Mapper.writeValueAsString(errors), is(json2Reference));
 	}
 
+	/**
+	 * @see #62, #154
+	 */
 	@Test
 	public void jaxbMarshalling() throws Exception {
 
 		Writer writer = new StringWriter();
 		marshaller.marshal(errors, writer);
-		assertThat(writer.toString(), is(xmlReference));
+
+		assertThat(new Diff(xmlReference, writer.toString()).similar(), is(true));
 	}
 
 	/**
-	 * @see #93, #94
+	 * @see #62, #93, #94
 	 */
 	@Test
 	public void jackson1UnMarshalling() throws Exception {