Starting point

wakaleo · wakaleo · commit 94e24ac6a36c · 2020-05-25T18:44:21.000+01:00
diff --git a/src/main/java/com/serenitydojo/shoppingcart/ItemInCart.java b/src/main/java/com/serenitydojo/shoppingcart/ItemInCart.java
@@ -0,0 +1,20 @@
+package com.serenitydojo.shoppingcart;
+
+public class ItemInCart {
+
+    private final ShoppingItem item;
+    private final int quantity;
+
+    public ItemInCart(ShoppingItem item, int quantity) {
+        this.item = item;
+        this.quantity = quantity;
+    }
+
+    public ShoppingItem getItem() {
+        return item;
+    }
+
+    public int getQuantity() {
+        return quantity;
+    }
+}
diff --git a/src/main/java/com/serenitydojo/shoppingcart/ShoppingCart.java b/src/main/java/com/serenitydojo/shoppingcart/ShoppingCart.java
@@ -1,16 +1,30 @@
 package com.serenitydojo.shoppingcart;
 
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
 public class ShoppingCart {
 
-    public void add(int quantity, ShoppingItem item) {}
+    private List<ItemInCart> shoppingCartContents = new ArrayList<>();
+    private double appliedDiscount = 0.0;
 
-    public void calculateTotal() {}
+    public void add(int quantity, ShoppingItem item) {
+        shoppingCartContents.add(new ItemInCart(item,quantity));
+    }
 
-    public void addSalesTax() {}
+    public void addBags(int numberOfBags) {
+        ShoppingItem bag = new ShoppingItem("Shopping Bag", "bag", 0.50,"324534563546356","Shop");
+        shoppingCartContents.add(new ItemInCart(bag, numberOfBags));
+    }
 
-    public void addBags(int numberOfBags) {}
+    public void applyDiscount(double discount) {
+        ShoppingItem discountLineItem = new ShoppingItem("Discount", "1", -1 * discount,"","");
+        shoppingCartContents.add(new ItemInCart(discountLineItem, 1));
+    }
 
     public double getTotal() {
-        return 0;
+        return shoppingCartContents.stream().mapToDouble(item -> item.getQuantity() * item.getItem().getPrice()).sum();
     }
 }
diff --git a/src/main/java/com/serenitydojo/shoppingcart/ShoppingItem.java b/src/main/java/com/serenitydojo/shoppingcart/ShoppingItem.java
@@ -14,4 +14,24 @@ public ShoppingItem(String name, String units, double price, String serialNumber
         this.serialNumber = serialNumber;
         this.brand = brand;
     }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getUnits() {
+        return units;
+    }
+
+    public double getPrice() {
+        return price;
+    }
+
+    public String getSerialNumber() {
+        return serialNumber;
+    }
+
+    public String getBrand() {
+        return brand;
+    }
 }
diff --git a/src/test/java/com/serenitydojo/shoppingcart/WhenCalculatingTotalPrice.java b/src/test/java/com/serenitydojo/shoppingcart/WhenCalculatingTotalPrice.java
@@ -13,13 +13,34 @@ public void shouldCalculatePriceWhenArticlesAreAddedToTheCart() {
         ShoppingItem item3 = new ShoppingItem("Apples", "bag", 6.99,"345457584524562","Farmers Pick");
         ShoppingItem item4 = new ShoppingItem("Oranges", "bag", 7.99,"986865754876587","Farmers Pick");
         cart.add(2, item1);
-        cart.add(1, item4);
+        cart.add(3, item2);
         cart.add(1, item3);
+        cart.add(1, item4);
+        double totalPrice = cart.getTotal();
+        Assert.assertEquals(totalPrice, 36.93,0.0);
+    }
+    @Test
+    public void bagsCost50pEach() {
+        ShoppingCart cart = new ShoppingCart();
+        ShoppingItem item1 = new ShoppingItem("Rice", "1 kg", 4.99,"1235357214735835","Rice R Us");
+        ShoppingItem item2 = new ShoppingItem("Milk", "1 lt", 3.99,"7879827234234232","Home Brand Dairy");
+        ShoppingItem item3 = new ShoppingItem("Apples", "bag", 6.99,"345457584524562","Farmers Pick");
+        ShoppingItem item4 = new ShoppingItem("Oranges", "bag", 7.99,"986865754876587","Farmers Pick");
+        cart.add(2, item1);
         cart.add(3, item2);
-        cart.calculateTotal();
-        cart.addSalesTax();
+        cart.add(1, item3);
+        cart.add(1, item4);
         cart.addBags(3);
         double totalPrice = cart.getTotal();
         Assert.assertEquals(totalPrice, 38.43,0.0);
     }
+
+    /**
+     * TODO: Write another test to check what happens when you apply a discount using the "applyDiscount()" method
+     *
+     */
+    @Test
+    public void shouldReduceThePriceWhenADiscountIsApplied() {
+
+    }
 }
