[java][booking][02_parameter_object] Introduce Discount parameter object

Author: rgomezcasas

examples/java/java-booking-02_introduce_parameter_object/src/main/java/tv/codely/booking/Booking.java

@@ -20,8 +20,7 @@ public Booking(
         DateRange bookingDateRange,
         Customer customer,
         BookingType bookingType,
-        DiscountType discountType,
-        DiscountValue discountValue,
+        Discount discount,
         TaxType taxType,
         TaxValue taxValue
     ) {
@@ -32,8 +31,8 @@ public Booking(
         this.customerName  = customer.name();
         this.customerEmail = customer.emailAddress();
         this.bookingType   = bookingType;
-        this.discountType  = discountType;
-        this.discountValue = discountValue;
+        this.discountType  = discount.type();
+        this.discountValue = discount.value();
         this.taxType       = taxType;
         this.taxValue      = taxValue;
     }

examples/java/java-booking-02_introduce_parameter_object/src/main/java/tv/codely/booking/Discount.java

@@ -0,0 +1,19 @@
+package tv.codely.booking;
+
+public final class Discount {
+    private final DiscountType  type;
+    private final DiscountValue value;
+
+    public Discount(DiscountType type, DiscountValue value) {
+        this.type  = type;
+        this.value = value;
+    }
+
+    public DiscountType type() {
+        return type;
+    }
+
+    public DiscountValue value() {
+        return value;
+    }
+}

examples/java/java-booking-02_introduce_parameter_object/src/test/java/tv/codely/booking/BookingShould.java

@@ -23,8 +23,7 @@ void get_the_correct_status_when_the_booking_has_not_started_yet() {
                 new EmailAddress("perico.los.palotes@mail.com")
             ),
             BookingType.VACATION,
-            DiscountType.NONE,
-            new DiscountValue(0),
+            new Discount(DiscountType.NONE, new DiscountValue(0)),
             TaxType.NONE,
             new TaxValue(0)
         );
@@ -48,8 +47,7 @@ void get_the_correct_status_when_the_booking_is_currently_active() {
                 new EmailAddress("perico.los.palotes@mail.com")
             ),
             BookingType.VACATION,
-            DiscountType.NONE,
-            new DiscountValue(0),
+            new Discount(DiscountType.NONE, new DiscountValue(0)),
             TaxType.NONE,
             new TaxValue(0)
         );
@@ -73,8 +71,7 @@ void get_the_correct_status_when_the_booking_is_finished() {
                 new EmailAddress("perico.los.palotes@mail.com")
             ),
             BookingType.VACATION,
-            DiscountType.NONE,
-            new DiscountValue(0),
+            new Discount(DiscountType.NONE, new DiscountValue(0)),
             TaxType.NONE,
             new TaxValue(0)
         );