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

Author: rgomezcasas

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

@@ -21,8 +21,7 @@ public Booking(
         Customer customer,
         BookingType bookingType,
         Discount discount,
-        TaxType taxType,
-        TaxValue taxValue
+        Tax tax
     ) {
         this.id            = id;
         this.startDate     = bookingDateRange.startDate();
@@ -33,8 +32,8 @@ public Booking(
         this.bookingType   = bookingType;
         this.discountType  = discount.type();
         this.discountValue = discount.value();
-        this.taxType       = taxType;
-        this.taxValue      = taxValue;
+        this.taxType       = tax.type();
+        this.taxValue      = tax.value();
     }
 
     public BookingStatus statusFor(LocalDateTime date) {

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

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

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

@@ -24,8 +24,7 @@ void get_the_correct_status_when_the_booking_has_not_started_yet() {
             ),
             BookingType.VACATION,
             new Discount(DiscountType.NONE, new DiscountValue(0)),
-            TaxType.NONE,
-            new TaxValue(0)
+            new Tax(TaxType.NONE, new TaxValue(0))
         );
 
         assertEquals(BookingStatus.NOT_STARTED, booking.statusFor(dateBeforeBookingHasStarted));
@@ -48,8 +47,7 @@ void get_the_correct_status_when_the_booking_is_currently_active() {
             ),
             BookingType.VACATION,
             new Discount(DiscountType.NONE, new DiscountValue(0)),
-            TaxType.NONE,
-            new TaxValue(0)
+            new Tax(TaxType.NONE, new TaxValue(0))
         );
 
         assertEquals(BookingStatus.ACTIVE, booking.statusFor(dateBetweenBooking));
@@ -72,8 +70,7 @@ void get_the_correct_status_when_the_booking_is_finished() {
             ),
             BookingType.VACATION,
             new Discount(DiscountType.NONE, new DiscountValue(0)),
-            TaxType.NONE,
-            new TaxValue(0)
+            new Tax(TaxType.NONE, new TaxValue(0))
         );
 
         assertEquals(BookingStatus.FINISHED, booking.statusFor(dateAfterBookingEnds));