Cupcake

About this kata

This kata was originally made to implement the decorator and composite pattern.

Problem Description

Write a program that can build many cakes with many toppings like : “Cupcake with chocolate and nuts” Or “🧁 with black 🍫 and 🥜 and 🍬”. Be carful the order of topping is very important.

Write a function or method that can show the name of cake.

Write a function that can show the price of cake. The price is composed of base cake price and topping price.

Bundle of non fresh cakes

Now it’s possible to make a bundle of cakes. The price of a bundle is 10% less than prices of each cake.

It’s possible to build a bundle of bundle with singles cakes.

Suggested Test Cases

Decorator pattern

In pseudocode to build a Cupcake with chocolate and nuts and sugar you will write

var myCake = Sugar(Nuts(Chocolate(Cupcake())))

With typing, we can start to test :

• I can put a Cupcake in a variable of type Cake

About name function or method

• The name function should return “🧁”
• The name function should return “🍪”
• The name function should return “🧁 with 🍫”
• The name function should return “🍪 with 🍫”
• The name function should return “🍪 with 🍫 and 🥜”
• The name function should return “🍪 with 🥜 and 🍫”

About price function or method

• The price function should return 1$ for “🧁”
• The price function should return 2$ for “🍪”
• The price function should return 1.1$ for “🧁 with 🍫”
• The price function should return 2.1$ for “🍪 with 🍫”
• The price function should return 2.2$ for “🍪 with 🥜”

Bundle

• We can build a Bundle with 1 Cupcake and check price or description
• We can build a Bundle with 1 Cupcake and 1 Cookie and check price or description
• We can build a Bundle with 2 Cupcake and 1 Cookie and check price or description
• We can build a bundle with 1 bundle of 2 cakes and 1 Cupcake and check price or description
• We can build a bundle with many bundle of bundle and many cakes and check price or description