sunnymattas

  private static final double DISCOUNT_UNIT_PRICE = 6.5d;
  private static final String UNIT_LABEL = "Liter";
  private static final double BASE_PRICE = 5.0d;
  private static final double UNIT_PRICE = 3.5d;
  private static final double DISCOUNT_PRICE = 1.5d;

  @Mock private PriceRepository priceRepository;

  @Test
  public void testBasePriceIsReturned_When_DiscountAndUnitPriceNotPresent() {

sunnymattas

public class Customer {
  private final Name name;
  private final WishList wishList;

  public Customer(final Name name, final WishList wishList) {
    this.name = name;
    this.wishList = wishList;
  }

  public String name() {

sunnymattas

public class ShippingAddresses {

  private final ShippingAddress shippingAddress;

  public ShippingAddresses(final ShippingAddress shippingAddress) {
    this.shippingAddress = shippingAddress;
  }

  public void add(ShippingAddressRequest request) {
    shippingAddress.create(request);

sunnymattas

public class Customer {
  private final ShippingAddresses shippingAddresses;

  public Customer(final ShippingAddresses shippingAddresses) {
    this.shippingAddresses = shippingAddresses;
  }

  public void createShippingAddress(CustomerRequest customerRequest) {
    shippingAddresses.add(customerRequest.getShippingAddress());
  }

sunnymattas

public class ShippingAddressRequest {
  private String streetName;
  private String postalCode;
  private String cityName;
  private String countryName;
  private String landmark;
}

sunnymattas

public class Product {
  private final Price price;
  
  public Product(final Price price) {
    this.price = price;
  }

  double calculatePrice() {
      return price.find();
  }

sunnymattas

public class Product {
  private final ProductPrice productPrice;

  public Product(final ProductPrice productPrice) {
    this.productPrice = productPrice;
  }

  double calculateProductPrice(){
      return productPrice.getPrice();
  }

sunnymattas

 getMessengers().findMatchingMessenger(type, message).send(type, message);

sunnymattas

public class Skype implements Action, Rule {

  @Override
  public void send(final String message) {
    System.out.println("Sending message to Skype");
  }

  @Override
  public OptionalMessenger matches(final String type, final String message) {
    return getType().equalsIgnoreCase(type) && isValid(message)

sunnymattas

public class OptionalMessenger {
  private final Optional<Action> messenger;

  private OptionalMessenger(Optional<Action> messenger) {
    this.messenger = messenger;
  }

  public static OptionalMessenger of(Action messenger) {
    return new OptionalMessenger(Optional.of(messenger));
  }