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Andrei Branza - test article shallowCopy-vs-deepCopy

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Andrei Branza 2024-02-22 11:49:07 +02:00
parent d658a3d2b8
commit 13448aa551
8 changed files with 217 additions and 0 deletions
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38
xxAndreiBranza/shallowCopy-vs-deepCopy/.gitignore vendored Normal file
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target/
!.mvn/wrapper/maven-wrapper.jar
!**/src/main/**/target/
!**/src/test/**/target/
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xxAndreiBranza/shallowCopy-vs-deepCopy/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.baeldung</groupId>
<artifactId>shallowCopy-vs-deepCopy</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<java.version>21</java.version>
<junit.version>4.13.2</junit.version>
<test.scope>test</test.scope>
<maven.compiler.source>${java.version}</maven.compiler.source>
<maven.compiler.target>${java.version}</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>${test.scope</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.30</version>
<scope>provided</scope>
</dependency>
</dependencies>
</project>

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xxAndreiBranza/shallowCopy-vs-deepCopy/src/main/java/com/baeldung/cloning/deep/Address.java Normal file
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package com.baeldung.cloning.deep;
import lombok.*;
@Getter
@Setter
@AllArgsConstructor
@EqualsAndHashCode
@ToString
public class Address implements Cloneable
{
private String streetName;
private String cityName;
@Override
public Address clone() {
try
{
return (Address) super.clone();
} catch (CloneNotSupportedException cloneException)
{
throw new RuntimeException(cloneException);
}
}
}

28
xxAndreiBranza/shallowCopy-vs-deepCopy/src/main/java/com/baeldung/cloning/deep/Person.java Normal file
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package com.baeldung.cloning.deep;
import lombok.*;
@Getter
@Setter
@AllArgsConstructor
@EqualsAndHashCode
@ToString
public class Person implements Cloneable
{
private String firstName;
private String lastName;
private Address address;
public Person(Person personToBeCloned) {
Address addressToBeCloned = personToBeCloned.getAddress();
this.firstName = personToBeCloned.getFirstName();
this.lastName = personToBeCloned.getLastName();
this.address = new Address(addressToBeCloned.getStreetName(), addressToBeCloned.getCityName());
}
@Override
public Person clone() {
return new Person(this);
}
}

25
xxAndreiBranza/shallowCopy-vs-deepCopy/src/main/java/com/baeldung/cloning/shallow/Address.java Normal file
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package com.baeldung.cloning.shallow;
import lombok.*;
@Getter
@Setter
@AllArgsConstructor
@EqualsAndHashCode
@ToString
public class Address implements Cloneable
{
private String streetName;
private String cityName;
@Override
public Address clone() {
try
{
return (Address) super.clone();
} catch (CloneNotSupportedException cloneException)
{
throw new RuntimeException(cloneException);
}
}
}

24
xxAndreiBranza/shallowCopy-vs-deepCopy/src/main/java/com/baeldung/cloning/shallow/Person.java Normal file
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package com.baeldung.cloning.shallow;
import lombok.*;
@Getter
@Setter
@AllArgsConstructor
@EqualsAndHashCode
@ToString
public class Person implements Cloneable
{
private String firstName;
private String lastName;
private Address address;
@Override
public Person clone() {
try {
return (Person) super.clone();
} catch (CloneNotSupportedException cloneException) {
throw new RuntimeException(cloneException);
}
}
}

23
xxAndreiBranza/shallowCopy-vs-deepCopy/src/test/java/com/baeldung/cloning/deep/DeepCloningTest.java Normal file
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package com.baeldung.cloning.deep;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotEquals;
public class DeepCloningTest {
Person alex = new Person("Alex", "Jones", new Address("Main Street", "Main City"));
@Test
public void whenUsingDeepCopy_thenReferencesAreNotTheSame()
{
Person constructorCopyOfAlex = new Person(alex);
assertEquals(alex, constructorCopyOfAlex);
alex.setAddress(new Address("Unknown Street", "Unknown City"));
assertNotEquals(alex.getAddress(), constructorCopyOfAlex.getAddress());
}
}

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xxAndreiBranza/shallowCopy-vs-deepCopy/src/test/java/com/baeldung/cloning/shallow/ShallowCloningTest.java Normal file
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package com.baeldung.cloning.shallow;
import org.junit.Test;
import static org.junit.Assert.*;
public class ShallowCloningTest {
Person alex = new Person("Alex", "Jones", new Address("Main Street", "Main City"));
@Test
public void whenUsingShallowCopy_ThenReferencesAreTheSame()
{
Person shallowCopyOfAlex = alex.clone();
assertEquals(alex, shallowCopyOfAlex);
alex.getAddress().setCityName("Unknown City");
assertEquals(alex.getAddress(), shallowCopyOfAlex.getAddress());
}
}