Serialization Validation initial commit

Changes for Adding Tests Serialization Validation
1: Added utility Method.
2: Added Tests

core-java-modules/core-java/pom.xml

@@ -61,6 +61,11 @@
             <artifactId>moneta</artifactId>
             <version>${javamoney.moneta.version}</version>
         </dependency>
+        <dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-core</artifactId>
+			<version>${spring.core.version}</version>
+		</dependency>
     </dependencies>
 
     <build>
@@ -187,6 +192,7 @@
         <maven-javadoc-plugin.version>3.0.0-M1</maven-javadoc-plugin.version>
         <source.version>1.8</source.version>
         <target.version>1.8</target.version>
+        <spring.core.version>4.3.20.RELEASE</spring.core.version>
     </properties>
 
 </project>

core-java-modules/core-java/src/main/java/com/baeldung/util/SerializationUtils.java

@@ -0,0 +1,29 @@
+package com.baeldung.util;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.io.Serializable;
+
+public class SerializationUtils {
+
+	public static <T extends Serializable> byte[] serialize(T obj) 
+	       throws IOException {
+	    ByteArrayOutputStream baos = new ByteArrayOutputStream();
+	    ObjectOutputStream oos = new ObjectOutputStream(baos);
+	    oos.writeObject(obj);
+	    oos.close();
+	    return baos.toByteArray();
+	}
+	
+	public static <T extends Serializable> T deserialize(byte[] b, Class<T> cl)
+	       throws IOException, ClassNotFoundException {
+	    ByteArrayInputStream bais = new ByteArrayInputStream(b);
+	    ObjectInputStream ois = new ObjectInputStream(bais);
+	    Object o = ois.readObject();
+	    return cl.cast(o);
+	}
+}
+

core-java-modules/core-java/src/test/java/com/baeldung/serialization/SerializationUnitTest.java

@@ -0,0 +1,79 @@
+package com.baeldung.serialization;
+
+import static org.junit.Assert.assertTrue;
+
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.NotSerializableException;
+import java.io.ObjectOutputStream;
+import java.io.Serializable;
+
+import org.apache.commons.lang3.SerializationUtils;
+import org.junit.Test;
+
+public class SerializationUnitTest {
+
+	@Test(expected = NotSerializableException.class)
+	public void whenSerializing_ThenThrowsError() throws IOException {
+		Address address = new Address();
+		address.setHouseNumber(10);
+		FileOutputStream fileOutputStream = new FileOutputStream("yofile.txt");
+		try (ObjectOutputStream objectOutputStream = new ObjectOutputStream(fileOutputStream)) {
+			objectOutputStream.writeObject(address);
+		}
+	}
+
+	@Test(expected = ClassCastException.class)
+	public void whenSerializingUsingApacheCommons_ThenThrowsError() {
+		Address address = new Address();
+		address.setHouseNumber(10);
+		SerializationUtils.serialize((Serializable) address);
+	}
+
+	@Test
+	public void whenSerializingAndDeserializingUsingApacheCommons_ThenObjectIsTheSame() {
+		Person p = new Person();
+		p.setAge(20);
+		p.setName("Joe");
+		byte[] serialize = SerializationUtils.serialize(p);
+		Person p2 = (Person) SerializationUtils.deserialize(serialize);
+		assertTrue(p2.getAge() == p.getAge());
+		assertTrue(p2.getName().equals(p.getName()));
+	}
+
+	@Test(expected = ClassCastException.class)
+	public void whenSerializingUsingSpringSerializationUtils_ThenThrowsError() {
+		Address address = new Address();
+		address.setHouseNumber(10);
+		org.springframework.util.SerializationUtils.serialize((Serializable) address);
+	}
+
+	@Test
+	public void whenSerializingAndDeserializingUsingSpringSerializationUtils_ThenObjectIsTheSame() {
+		Person p = new Person();
+		p.setAge(20);
+		p.setName("Joe");
+		byte[] serialize = org.springframework.util.SerializationUtils.serialize(p);
+		Person p2 = (Person) org.springframework.util.SerializationUtils.deserialize(serialize);
+		assertTrue(p2.getAge() == p.getAge());
+		assertTrue(p2.getName().equals(p.getName()));
+	}
+
+	@Test(expected = ClassCastException.class)
+	public void whenSerializingUsingCustomSerializationUtils_ThenThrowsError() throws IOException {
+		Address address = new Address();
+		address.setHouseNumber(10);
+		com.baeldung.util.SerializationUtils.serialize((Serializable) address);
+	}
+
+	@Test
+	public void whenSerializingAndDeserializingUsingCustomSerializationUtils_ThenObjectIsTheSame() throws IOException, ClassNotFoundException {
+		Person p = new Person();
+		p.setAge(20);
+		p.setName("Joe");
+		byte[] serialize = com.baeldung.util.SerializationUtils.serialize(p);
+		Person p2 = com.baeldung.util.SerializationUtils.deserialize(serialize, Person.class);
+		assertTrue(p2.getAge() == p.getAge());
+		assertTrue(p2.getName().equals(p.getName()));
+	}
+}