BAEL-6079 Code examples from article (#13486)
* BAEL-6079 Code examples from article * BAEL-6079 Code examples from article * BAEL-6079 Code examples from article update * BAEL-6079 Code examples from article update
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Bogdan Cardoş
GitHub
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package com.baeldung.methods;
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public class Car {
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private final String make;
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private final String model;
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private final int year;
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private final String color;
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private final boolean automatic;
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private final int numDoors;
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private final String features;
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private Car(CarBuilder carBuilder) {
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this.make = carBuilder.make;
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this.model = carBuilder.model;
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this.year = carBuilder.year;
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this.color = carBuilder.color;
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this.automatic = carBuilder.automatic;
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this.numDoors = carBuilder.numDoors;
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this.features = carBuilder.features;
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}
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public String getMake() {
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return make;
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}
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public String getModel() {
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return model;
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}
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public int getYear() {
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return year;
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}
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public String getColor() {
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return color;
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}
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public boolean isAutomatic() {
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return automatic;
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}
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public int getNumDoors() {
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return numDoors;
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}
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public String getFeatures() {
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return features;
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}
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public static class CarBuilder {
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private final String make;
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private final String model;
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private final int year;
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private String color = "unknown";
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private boolean automatic = false;
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private int numDoors = 4;
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private String features = "";
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public CarBuilder(String make, String model, int year) {
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this.make = make;
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this.model = model;
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this.year = year;
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}
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public CarBuilder color(String color) {
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this.color = color;
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return this;
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}
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public CarBuilder automatic(boolean automatic) {
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this.automatic = automatic;
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return this;
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}
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public CarBuilder numDoors(int numDoors) {
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this.numDoors = numDoors;
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return this;
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}
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public CarBuilder features(String features) {
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this.features = features;
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return this;
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}
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public Car build() {
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return new Car(this);
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}
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}
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@Override
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public String toString() {
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return "Car [make=" + make + ", model=" + model + ", year=" + year + ", color=" + color + ", automatic=" + automatic + ", numDoors=" + numDoors + ", features=" + features + "]";
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}
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}
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package com.baeldung.methods;
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import java.io.Serializable;
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public class Motorcycle extends Vehicle implements Serializable {
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private static final long serialVersionUID = 5973661295933599929L;
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private int year;
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private String features = "";
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public Motorcycle() {
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super();
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}
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public Motorcycle(String make, String model, String color, int weight, boolean statusNew, int year) {
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super(make, model, color, weight, statusNew);
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this.year = year;
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}
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public Motorcycle(Vehicle vehicle, int year) {
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super(vehicle);
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this.year = year;
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}
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public int getYear() {
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return year;
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}
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public void setYear(int year) {
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this.year = year;
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}
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public void setFeatures(String features) {
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this.features = features;
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}
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public String getFeatures() {
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return features;
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}
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public void addMotorcycleFeatures(String... features) {
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StringBuilder str = new StringBuilder(this.getFeatures());
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for (String feature : features) {
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if (!str.toString().isEmpty())
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str.append(", ");
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str.append(feature);
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}
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this.setFeatures(str.toString());
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}
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}
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package com.baeldung.methods;
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public class Vehicle {
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static String defaultValue = "DEFAULT";
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private String make = defaultValue;
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private String model = defaultValue;
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private String color = defaultValue;
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private int weight = 0;
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private boolean statusNew = true;
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public Vehicle() {
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super();
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}
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public Vehicle(String make, String model, String color, int weight, boolean statusNew) {
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this.make = make;
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this.model = model;
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this.color = color;
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this.weight = weight;
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this.statusNew = statusNew;
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}
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public Vehicle(Vehicle vehicle) {
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this(vehicle.make, vehicle.model, vehicle.color, vehicle.weight, vehicle.statusNew);
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}
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@Override
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public String toString() {
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return "Vehicle [make=" + make + ", model=" + model + ", color=" + color + ", weight=" + weight + ", statusNew=" + statusNew + "]";
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}
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}
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package com.baeldung.methods;
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public class VehicleProcessor {
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Vehicle processVehicle(String make, String model, String color, int weight, boolean status) {
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return new Vehicle(make, model, color, weight, status);
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}
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Vehicle processVehicle(Vehicle vehicle) {
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return new Vehicle(vehicle);
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}
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Car processCar(Car car) {
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return new Car.CarBuilder(car.getMake(), car.getModel(), car.getYear()).color(car.getColor())
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.automatic(car.isAutomatic())
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.features(car.getFeatures())
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.build();
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}
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}
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@ -0,0 +1,58 @@
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package com.baeldung.methods;
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import static org.assertj.core.api.Assertions.assertThat;
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import org.junit.jupiter.api.Test;
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class VehicleProcessorUnitTest {
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VehicleProcessor vehicleProcessor = new VehicleProcessor();
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Vehicle vehicle = new Vehicle("Ford", "Focus", "red", 2200, true);
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@Test
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void givenAllArguments_whenMethodCall_thenVerifyCallIsDoneCorrectly() {
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Vehicle veh = vehicleProcessor.processVehicle("Ford", "Focus", "red", 2200, true);
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assertThat(veh.toString()).hasToString(vehicle.toString());
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}
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@Test
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void givenParameterObject_whenMethodCall_thenVerifyCallIsDoneCorrectly() {
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Vehicle veh = vehicleProcessor.processVehicle(vehicle);
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assertThat(veh.toString()).hasToString(vehicle.toString());
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}
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@Test
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void givenJavaBeanPattern_whenMethodCall_thenVerifyCallIsDoneCorrectly() {
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Motorcycle motorcycle = new Motorcycle("Ducati", "Monster", "yellow", 235, true, 2023);
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motorcycle.setFeatures("GPS");
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vehicleProcessor.processVehicle(motorcycle);
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assertThat(motorcycle.getFeatures()).isEqualToIgnoringCase("GPS");
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}
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@Test
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void givenJavaVarargs_whenMethodCall_thenAssertTheReturnedConcatenatedString() {
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Motorcycle motorcycle = new Motorcycle("Ducati", "Monster", "red", 350, true, 2023);
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motorcycle.addMotorcycleFeatures("abs");
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assertThat(motorcycle.getFeatures()).isEqualToIgnoringCase("abs");
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motorcycle.addMotorcycleFeatures("navi", "charger");
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assertThat(motorcycle.getFeatures()).isEqualToIgnoringCase("abs, navi, charger");
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motorcycle.addMotorcycleFeatures("wifi", "phone", "satellite");
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assertThat(motorcycle.getFeatures()).isEqualToIgnoringCase("abs, navi, charger, wifi, phone, satellite");
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}
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@Test
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void givenJavaBuilderPattern_whenMethodCall_thenVerifyCallIsDoneCorrectly() {
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Car car = new Car.CarBuilder("Ford", "Focus", 2023).color("blue")
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.automatic(true)
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.features("abs, navi, charger, wifi, phone, satellite")
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.build();
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Car result = vehicleProcessor.processCar(car);
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assertThat(result.toString()).hasToString(car.toString());
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}
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}
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