pokemon-kata

Description

You work in a toy store that is selling Pokemon. Each Pokemon costs $8.00. Customers who buy more than one type of Pokemon get a discount. The same type of Pokemon cannot be added to a discount group.

Number of Different Pokemon Purchased	Discount Amount
1	No discount
2	10%
3	20%

Pokemon for Sale	Price
Pikachu	$6
Squirtle	$5
Charmander	$5

Requirements

The completed program should be able to calculate the best possible discount for any collection of Pokemon.

Each example should be translated into a Unit Test. No UI component is required, each test scenario may be hard coded. Additional Unit Tests are encouraged.

Competitive Advantage

We will be looking to interview those individuals whose completed exercise most closely adheres to the principles listed in the book “Clean Code”. If you are unfamiliar with this book, do not worry. Just try to write your code in a manner which leaves you feeling proud of the end product.

Examples

Example One

Purchased 1 Pikachu
Should yield $6.00

Example Two

Purchased 2 Pikachu
Should yield $12.00

Example Three

Purchased 1 Pikachu
Purchased 1 Squirtle
Should yield $9.90

Example Four *note that the 10% discount does not apply to the second Pikachu.

Purchased 2 Pikachu
Purchased 1 Squirtle
Should yield $15.90

Example Five *note that each group of two Pokemon receives a 10% discount.

Purchased 2 Pikachu
Purchased 2 Squirtle
Should yield $19.80

Example Six *note that each group of two Pokemon receives a 10% discount.

Purchased 3 Pikachu
Purchased 3 Squirtle
Should yield $29.70

Example Seven

Purchased 1 Pikachu
Purchased 1 Squirtle
Purchased 1 Charmander
Should yield $12.80

Example Eight *note that the 10% discount applies to the three grouped Pokemon, but not the additional ungrouped Pikachu.

Purchased 2 Pikachu
Purchased 1 Squirtle
Purchased 1 Charmander
Should yield $18.80