iSharkFly-Docs
/
java-tutorials
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

BAEL-3951: Added JDK 14 record example and associated tests. (#9270)

This commit is contained in:
Justin Albano 2020-05-11 11:47:04 -04:00 committed by GitHub
parent 9400efe7a4
commit 9d2e94f529
2 changed files with 172 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
core-java-modules/core-java-14/src/main/java/com/baeldung/java14/record/Person.java Normal file
View File

@ -0,0 +1,22 @@
package com.baeldung.java14.record;
import java.util.Objects;
public record Person (String name, String address) {
public static String UNKWOWN_ADDRESS = "Unknown";
public static String UNNAMED = "Unnamed";
public Person {
Objects.requireNonNull(name);
Objects.requireNonNull(address);
}
public Person(String name) {
this(name, UNKWOWN_ADDRESS);
}
public static Person unnamed(String address) {
return new Person(UNNAMED, address);
}
}

150
core-java-modules/core-java-14/src/test/java/com/baeldung/java14/record/PersonTest.java Normal file
View File

@ -0,0 +1,150 @@
package com.baeldung.java14.record;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotEquals;
import static org.junit.Assert.assertTrue;
import org.junit.Test;
public class PersonTest {
@Test
public void givenSameNameAndAddress_whenEquals_thenPersonsEqual() {
String name = "John Doe";
String address = "100 Linda Ln.";
Person person1 = new Person(name, address);
Person person2 = new Person(name, address);
assertTrue(person1.equals(person2));
}
@Test
public void givenDifferentObject_whenEquals_thenNotEqual() {
Person person = new Person("John Doe", "100 Linda Ln.");
assertFalse(person.equals(new Object()));
}
@Test
public void givenDifferentName_whenEquals_thenPersonsNotEqual() {
String address = "100 Linda Ln.";
Person person1 = new Person("Jane Doe", address);
Person person2 = new Person("John Doe", address);
assertFalse(person1.equals(person2));
}
@Test
public void givenDifferentAddress_whenEquals_thenPersonsNotEqual() {
String name = "John Doe";
Person person1 = new Person(name, "100 Linda Ln.");
Person person2 = new Person(name, "200 London Ave.");
assertFalse(person1.equals(person2));
}
@Test
public void givenSameNameAndAddress_whenHashCode_thenPersonsEqual() {
String name = "John Doe";
String address = "100 Linda Ln.";
Person person1 = new Person(name, address);
Person person2 = new Person(name, address);
assertEquals(person1.hashCode(), person2.hashCode());
}
@Test
public void givenDifferentObject_whenHashCode_thenNotEqual() {
Person person = new Person("John Doe", "100 Linda Ln.");
assertNotEquals(person.hashCode(), new Object().hashCode());
}
@Test
public void givenDifferentName_whenHashCode_thenPersonsNotEqual() {
String address = "100 Linda Ln.";
Person person1 = new Person("Jane Doe", address);
Person person2 = new Person("John Doe", address);
assertNotEquals(person1.hashCode(), person2.hashCode());
}
@Test
public void givenDifferentAddress_whenHashCode_thenPersonsNotEqual() {
String name = "John Doe";
Person person1 = new Person(name, "100 Linda Ln.");
Person person2 = new Person(name, "200 London Ave.");
assertNotEquals(person1.hashCode(), person2.hashCode());
}
@Test
public void givenValidNameAndAddress_whenGetNameAndAddress_thenExpectedValuesReturned() {
String name = "John Doe";
String address = "100 Linda Ln.";
Person person = new Person(name, address);
assertEquals(name, person.name());
assertEquals(address, person.address());
}
@Test
public void givenValidNameAndAddress_whenToString_thenCorrectStringReturned() {
String name = "John Doe";
String address = "100 Linda Ln.";
Person person = new Person(name, address);
assertEquals("Person[name=" + name + ", address=" + address + "]", person.toString());
}
@Test(expected = NullPointerException.class)
public void givenNullName_whenConstruct_thenErrorThrown() {
new Person(null, "100 Linda Ln.");
}
@Test(expected = NullPointerException.class)
public void givenNullAddress_whenConstruct_thenErrorThrown() {
new Person("John Doe", null);
}
@Test
public void givenUnknownAddress_whenConstructing_thenAddressPopulated() {
String name = "John Doe";
Person person = new Person(name);
assertEquals(name, person.name());
assertEquals(Person.UNKWOWN_ADDRESS, person.address());
}
@Test
public void givenUnnamed_whenConstructingThroughFactory_thenNamePopulated() {
String address = "100 Linda Ln.";
Person person = Person.unnamed(address);
assertEquals(Person.UNNAMED, person.name());
assertEquals(address, person.address());
}
}