Evermood Ruby Coding Challenge

We are excited that you are interested in performing our coding challenge. The purpose of this assignment is to see how you approach problems and evaluate the quality of your code.

The task and requirements

For a pizza order the total price is to be calculated. For a pizza order several pizzas can be ordered, per pizza the desired size and also special requests (extra ingredients and omit ingredients) can be specified. In addition, there is a possibility to reduce the price of the order by using various discount codes.

• The price of a pizza depends on the size. Per size there is a "multiplier" that is multiplied by the base price of the pizza.
• Extra ingredients are also provided with this multiplier.
• Ingredients that are omitted during preparation do not change the price of the pizza.
• Promotion codes allow to get pizzas for free; e.g., two small salami pizzas for the price of one. Extra ingredients will still be charged though. Multiple promotion codes can be specified per order. A promotion code can also be applied more than once to the same order (a 2-for-1 code automatically reduces 4 pizzas to 2 for one order).
• A discount code reduces the total invoice amount by a percentage.

The repository contains the basic structure for the development, the required data in JSON format and a failing test to start the development.

In lib/data.json you can find the list of selectable pizzas, the multipliers and ingredients as well as the promotion and discount codes.

You should start with

shell
bundle
bundle exec rspec

to run the tests, then you can start development.

How to proceed and submit the solution

• Arrange your time as you like. We are interested in you finding a solution you are happy with, not speed.
• Create a private repository and checkout a feature branch.
• Push your solution and work with git like you would on a real project.
• Open a pull request when you are ready.
• Add us to the repository and mention us in the pull request, so we can take a look at your solution.
• Feel free to contact us at any time by mail with questions or difficulties.

What we are looking for

A complete implementation of the solution allows the test in spec/pizza_order_spec.rb to run successfully without any customization of the test or additional setup. Of course, the implementation should also provide the correct results for other valid orders.