tdd-java-demo

commit 0580afc35704013ce0d035609b80c78150b586bd
parent bef9897a2a81d538a6b0094f04d67cd4757676ce
Author: Jul <jul@9o.is>
Date:   Thu,  1 Apr 2021 00:31:38 +0800

invalidate discount before start date

Diffstat:
M
src/main/java/takehome/Discount.java
 | 
9
+++++++++
M
src/test/java/takehome/DiscountTest.java
 | 
15
+++++++++++++++

2 files changed, 24 insertions(+), 0 deletions(-)
diff --git a/src/main/java/takehome/Discount.java b/src/main/java/takehome/Discount.java
@@ -4,6 +4,7 @@ import com.google.common.collect.HashMultiset;
 import com.google.common.collect.Multiset;
 import com.google.common.collect.Multisets;
 
+import java.time.LocalDate;
 import java.util.Arrays;
 
 public class Discount {
@@ -21,6 +22,10 @@ public class Discount {
         this.items = HashMultiset.create(Arrays.asList(items));
     }
 
+    public Discount(double amount, LocalDate startDate, LocalDate endDate, Item... items) {
+        this(amount, items);
+    }
+
     public double getAmount() {
         return amount;
     }
@@ -40,4 +45,8 @@ public class Discount {
 
         return amount * occurrences;
     }
+
+    public boolean isValid(LocalDate date) {
+        return false;
+    }
 }
diff --git a/src/test/java/takehome/DiscountTest.java b/src/test/java/takehome/DiscountTest.java
@@ -2,6 +2,7 @@ package takehome;
 
 import org.junit.jupiter.api.Test;
 
+import java.time.LocalDate;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -17,6 +18,10 @@ class DiscountTest {
     public static final Discount APPLE_DISCOUNT = new Discount(0.01, APPLE);
     public static final Discount SOUP_BREAD_DISCOUNT = new Discount(0.40, SOUP, SOUP, BREAD);
 
+    public static final LocalDate TODAY = LocalDate.now();
+    public static final LocalDate TOMORROW = TODAY.plusDays(1);
+    public static final LocalDate YESTERDAY = TODAY.minusDays(1);
+
     @Test
     void getAmount() {
         assertThat(APPLE_DISCOUNT.getAmount(), is(0.01));
@@ -64,6 +69,16 @@ class DiscountTest {
         assertThat(SOUP_BREAD_DISCOUNT.getDiscount(basket), is(0.80));
     }
 
+    @Test
+    void isInvalidBeforeStartDate() {
+        Discount discount = discountByDate(TODAY, TOMORROW);
+        assertThat(discount.isValid(YESTERDAY), is(false));
+    }
+
+    private Discount discountByDate(LocalDate startDate, LocalDate endDate) {
+        return new Discount(0.01, startDate, endDate, APPLE);
+    }
+
     private Basket createBasketWithApples(int amount) {
         Map<Item, Integer> amounts = new HashMap<>();
         amounts.put(APPLE, amount);