Thomas Kristiansen

src/main/java/com/booleanuk/core/Basket.java

@@ -0,0 +1,25 @@
+package com.booleanuk.core;
+
+import java.util.HashMap;
+
+public class Basket {
+
+    HashMap<String, Integer> items = new HashMap<>();
+
+    public boolean add(String product, int price) {
+        if (items.containsKey(product)) {
+            return false;
+        } else {
+            items.put(product, price);
+            return true;
+        }
+    }
+
+    public int total() {
+        int total = 0;
+        for (String key : items.keySet()) {
+            total += items.get(key);
+        }
+        return total;
+    }
+}

src/test/java/com/booleanuk/core/BasketTest.java

@@ -0,0 +1,42 @@
+package com.booleanuk.core;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+public class BasketTest {
+
+    @Test
+    public void itemNotAlreadyInBasket() {
+        Basket basket = new Basket();
+        String product = "Bread";
+        int price = 15;
+
+        Assertions.assertTrue(basket.add(product,price));
+    }
+
+    @Test
+    public void itemAlreadyInBasket() {
+        Basket basket = new Basket();
+        String product = "Milk";
+        int price = 20;
+
+        basket.add(product, price);
+        Assertions.assertFalse(basket.add(product,price));
+    }
+
+    @Test
+    public void basketIsEmpty() {
+        Basket basket = new Basket();
+        Assertions.assertEquals(0, basket.total());
+    }
+
+    @Test
+    public void basketIsNotEmpty() {
+        Basket basket = new Basket();
+        String product = "Milk";
+        int price = 20;
+        basket.add(product, price);
+
+        Assertions.assertEquals(20, basket.total());
+    }
+}